cleanup

backend/app/app_factory.py

@@ -101,7 +101,8 @@ def create_app() -> Flask:
 
     @app.after_request
     def append_cors_headers(response):
-        return _apply_cors(response)
+        response = _apply_cors(response)
+        return _apply_cache_headers(response)
 
     @app.errorhandler(HTTPException)
     def handle_http_exception(exc: HTTPException):
@@ -123,7 +124,7 @@ def _register_cli_commands(app: Flask) -> None:
     auth_service = get_auth_service()
 
     @app.cli.command("create-admin")
-    @click.option("--username", required=True, help="Login")
+    @click.option("--username", required=True, help="Username")
     @click.option("--password", required=True, hide_input=True, confirmation_prompt=True, help="Password")
     @click.option("--display-name", default=None, help="Name")
     def create_admin_command(username: str, password: str, display_name: str | None):
@@ -134,14 +135,14 @@ def _register_cli_commands(app: Flask) -> None:
                 role="admin",
                 display_name=display_name,
             )
-            click.echo(f"Utworzono konto admina: {user.username}")
+            click.echo(f"Admin account created: {user.username}")
         except ValueError as exc:
             raise click.ClickException(str(exc)) from exc
         except Exception as exc:  # pragma: no cover
-            raise click.ClickException(f"Cant create admin account: {exc}") from exc
+            raise click.ClickException(f"Cannot create admin account: {exc}") from exc
 
     @app.cli.command("create-user")
-    @click.option("--username", required=True, help="Login")
+    @click.option("--username", required=True, help="Username")
     @click.option("--password", required=True, hide_input=True, confirmation_prompt=True, help="Password")
     @click.option("--display-name", default=None, help="Name")
     def create_user_command(username: str, password: str, display_name: str | None):
@@ -152,23 +153,23 @@ def _register_cli_commands(app: Flask) -> None:
                 role="user",
                 display_name=display_name,
             )
-            click.echo(f"Admin created: {user.username}")
+            click.echo(f"User account created: {user.username}")
         except ValueError as exc:
             raise click.ClickException(str(exc)) from exc
         except Exception as exc:  # pragma: no cover
-            raise click.ClickException(f"Cant create user account: {exc}") from exc
+            raise click.ClickException(f"Cannot create user account: {exc}") from exc
 
     @app.cli.command("reset-password")
-    @click.option("--username", required=True, help="Login")
+    @click.option("--username", required=True, help="Username")
     @click.option("--password", required=True, hide_input=True, confirmation_prompt=True, help="Password")
     def reset_password_command(username: str, password: str):
         try:
             user = auth_service.reset_password(username=username, new_password=password)
-            click.echo(f"Passowrd reseted for: {user.username}")
+            click.echo(f"Password reset for: {user.username}")
         except ValueError as exc:
             raise click.ClickException(str(exc)) from exc
         except Exception as exc:  # pragma: no cover
-            raise click.ClickException(f"Can't password reset: {exc}") from exc
+            raise click.ClickException(f"Cannot reset password: {exc}") from exc
 
 
 def _bootstrap_background_services(debug: bool) -> None:
@@ -191,3 +192,11 @@ def _apply_cors(response):
     response.headers["Access-Control-Allow-Methods"] = "GET, POST, OPTIONS, PUT"
     response.headers["Access-Control-Allow-Credentials"] = "true"
     return response
+
+
+def _apply_cache_headers(response):
+    if request.path == "/" or request.path.startswith("/api/"):
+        response.headers["Cache-Control"] = "no-store, no-cache, must-revalidate, proxy-revalidate"
+        response.headers["Pragma"] = "no-cache"
+        response.headers["Expires"] = "0"
+    return response

backend/app/routes/auth.py

@@ -78,3 +78,21 @@ def reset_password(username: str):
         return jsonify({"detail": str(exc)}), 403
     except ValueError as exc:
         return jsonify({"detail": str(exc)}), 400
+
+
+@auth_blueprint.put("/auth/users/<username>/role")
+def update_user_role(username: str):
+    payload = request.get_json(silent=True) or {}
+    try:
+        service.require_admin()
+        user = service.update_role(username=username, role=payload.get("role", "user"))
+        return jsonify(to_plain({
+            "username": user.username,
+            "display_name": user.display_name,
+            "role": user.role,
+            "is_active": user.is_active,
+        }))
+    except PermissionError as exc:
+        return jsonify({"detail": str(exc)}), 403
+    except ValueError as exc:
+        return jsonify({"detail": str(exc)}), 400

backend/app/routes/dashboard.py

@@ -25,11 +25,11 @@ def _resolve_kiosk_mode(requested_mode: str, require_write_access: bool = False)
 
     if normalized_mode == "public":
         if require_write_access and auth_service.enabled and session.get("auth_role") != "admin":
-            raise PermissionError("Brak uprawnien do edycji publicznego kiosku")
+            raise PermissionError("You do not have permission to edit the public kiosk")
         return "public", "public"
 
     if normalized_mode != "private":
-        raise ValueError("Mode musi byc jednym z: public, private")
+        raise ValueError("Mode must be one of: public, private")
 
     if not auth_service.enabled:
         return "private", "private"

backend/app/services/auth.py

@@ -55,9 +55,9 @@ class AuthService:
             self._login_legacy_user(username, password)
         else:
             if not user.is_active:
-                raise ValueError("Konto jest nieaktywne")
+                raise ValueError("Account is inactive")
             if not check_password_hash(user.password_hash, password):
-                raise ValueError("Niepoprawny login lub haslo")
+                raise ValueError("Invalid username or password")
             self._set_session(user.username, user.display_name, user.role)
 
         return self.status()
@@ -84,7 +84,7 @@ class AuthService:
         if not self.enabled:
             return
         if session.get(SESSION_ROLE_KEY) != "admin":
-            raise PermissionError("Brak uprawnien administratora")
+            raise PermissionError("Administrator permissions are required")
 
     def configure_app(self, app) -> None:
         max_age = int(self.settings.auth["session_max_age_seconds"])
@@ -101,7 +101,7 @@ class AuthService:
         clean_password = self._validate_password(password)
         resolved_display_name = (display_name or normalized_username).strip()
         if not resolved_display_name:
-            raise ValueError("Display name nie moze byc pusty")
+            raise ValueError("Display name cannot be empty")
         return self.user_repository.upsert_user(
             username=normalized_username,
             password_hash=generate_password_hash(clean_password),
@@ -118,16 +118,33 @@ class AuthService:
             generate_password_hash(clean_password),
         )
         if user is None:
-            raise ValueError(f"Uzytkownik '{normalized_username}' nie istnieje")
+            raise ValueError(f"User '{normalized_username}' does not exist")
         return user
 
+    def update_role(self, *, username: str, role: str) -> AuthUser:
+        normalized_username = self._normalize_username(username)
+        normalized_role = self._normalize_role(role)
+        user = self.user_repository.get_by_username(normalized_username)
+        if user is None:
+            raise ValueError(f"User '{normalized_username}' does not exist")
+        if user.role == normalized_role:
+            return user
+        if user.role == 'admin' and normalized_role != 'admin' and self.user_repository.count_admin_users() <= 1:
+            raise ValueError('At least one active admin user must remain')
+        updated = self.user_repository.update_role(normalized_username, normalized_role)
+        if updated is None:
+            raise ValueError(f"User '{normalized_username}' does not exist")
+        if session.get(SESSION_USER_KEY) == updated.username:
+            session[SESSION_ROLE_KEY] = updated.role
+        return updated
+
     def _login_legacy_user(self, username: str, password: str) -> None:
         expected_username = self.settings.auth["username"]
         expected_password = self.settings.auth["password"]
         expected_password_hash = self.settings.auth.get("password_hash")
 
         if username != expected_username:
-            raise ValueError("Niepoprawny login lub haslo")
+            raise ValueError("Invalid username or password")
 
         if expected_password_hash:
             password_ok = check_password_hash(expected_password_hash, password)
@@ -135,7 +152,7 @@ class AuthService:
             password_ok = password == expected_password
 
         if not password_ok:
-            raise ValueError("Niepoprawny login lub haslo")
+            raise ValueError("Invalid username or password")
 
         self._set_session(
             expected_username,
@@ -153,19 +170,19 @@ class AuthService:
     def _normalize_username(self, username: str) -> str:
         normalized = (username or "").strip()
         if not normalized:
-            raise ValueError("Username nie moze byc pusty")
+            raise ValueError("Username cannot be empty")
         return normalized
 
     def _normalize_role(self, role: str) -> str:
         normalized = (role or "").strip().lower()
         if normalized not in VALID_ROLES:
-            raise ValueError("Rola musi byc jedna z: admin, user")
+            raise ValueError("Role must be one of: admin, user")
         return normalized
 
     def _validate_password(self, password: str) -> str:
         clean_password = password or ""
         if len(clean_password) < 8:
-            raise ValueError("Haslo musi miec co najmniej 8 znakow")
+            raise ValueError("Password must be at least 8 characters long")
         return clean_password
 
 

backend/app/services/historical_sync.py

@@ -82,7 +82,7 @@ class HistoricalSyncService:
             with self._state_lock:
                 self._state.running = False
                 self._state.state = "idle"
-                self._state.message = "Brak brakujacych dni do importu."
+                self._state.message = "There are no missing days to import."
                 self._state.finished_at = datetime.utcnow()
                 self._refresh_coverage(lock_held=True)
                 self._refresh_available_bounds(lock_held=True)
@@ -92,7 +92,7 @@ class HistoricalSyncService:
         resolved_start, resolved_end = resolved
         total_days = (resolved_end - resolved_start).days + 1
         total_chunks = max(ceil(total_days / chunk_days), 1)
-        start_message = "Start importu archiwalnego" if not auto else "Start automatycznej synchronizacji archiwum"
+        start_message = "Historical import started" if not auto else "Automatic historical sync started"
 
         with self._state_lock:
             if self._worker and self._worker.is_alive():
@@ -138,18 +138,18 @@ class HistoricalSyncService:
 
         self._record_event(
             level="info",
-            title="Uruchomiono zadanie",
-            message=f"Zakres {resolved_start.isoformat()} -> {resolved_end.isoformat()}, chunk {chunk_days} dni",
+            title="Job started",
+            message=f"Range {resolved_start.isoformat()} -> {resolved_end.isoformat()}, chunk size {chunk_days} days",
         )
         return self.status()
 
     def cancel(self) -> HistoricalImportStatus:
         self._cancel_event.set()
         with self._state_lock:
-            self._state.message = "Anulowanie zadania..."
+            self._state.message = "Cancelling job..."
             self._refresh_runtime_metrics(lock_held=True)
             snapshot = copy.deepcopy(self._state)
-        self._record_event(level="warn", title="Anulowanie", message="Uzytkownik poprosil o zatrzymanie zadania.")
+        self._record_event(level="warn", title="Cancellation requested", message="The user requested the job to stop.")
         return snapshot
 
     def run_blocking(
@@ -185,8 +185,8 @@ class HistoricalSyncService:
             )
         self._record_event(
             level="info",
-            title="Uruchomiono zadanie",
-            message=f"Zakres {resolved_start.isoformat()} -> {resolved_end.isoformat()}, chunk {chunk_days} dni",
+            title="Job started",
+            message=f"Range {resolved_start.isoformat()} -> {resolved_end.isoformat()}, chunk size {chunk_days} days",
         )
         self._run_worker(
             start_date=resolved_start,
@@ -239,8 +239,8 @@ class HistoricalSyncService:
             chunk_start = start_date
             while chunk_start <= end_date:
                 if self._cancel_event.is_set():
-                    self._record_event(level="warn", title="Anulowano", message="Import archiwalny anulowany przez uzytkownika.")
-                    self._finish("cancelled", running=False, message="Import archiwalny anulowany przez uzytkownika.")
+                    self._record_event(level="warn", title="Cancelled", message="Historical import was cancelled by the user.")
+                    self._finish("cancelled", running=False, message="Historical import was cancelled by the user.")
                     return
 
                 chunk_index += 1
@@ -259,10 +259,10 @@ class HistoricalSyncService:
                         skipped_days=skipped,
                         energy_kwh=energy_kwh,
                         state="cancelled",
-                        note="Chunk zatrzymany podczas przetwarzania",
+                        note="Chunk stopped during processing",
                     )
-                    self._record_event(level="warn", title="Anulowano", message="Import archiwalny anulowany przez uzytkownika.")
-                    self._finish("cancelled", running=False, message="Import archiwalny anulowany przez uzytkownika.")
+                    self._record_event(level="warn", title="Cancelled", message="Historical import was cancelled by the user.")
+                    self._finish("cancelled", running=False, message="Historical import was cancelled by the user.")
                     return
 
                 self._close_chunk(
@@ -271,23 +271,23 @@ class HistoricalSyncService:
                     skipped_days=skipped,
                     energy_kwh=energy_kwh,
                     state="completed",
-                    note=f"Chunk zakonczony: import {imported}, pominiete {skipped}",
+                    note=f"Chunk completed: imported {imported}, skipped {skipped}",
                 )
                 self._record_event(
                     level="success",
-                    title=f"Chunk {chunk_index}/{total_chunks} zakonczony",
-                    message=f"Zakres {chunk_start.isoformat()} -> {chunk_end.isoformat()}, import {imported}, pominiete {skipped}, energia {energy_kwh:.2f} kWh",
+                    title=f"Chunk {chunk_index}/{total_chunks} completed",
+                    message=f"Range {chunk_start.isoformat()} -> {chunk_end.isoformat()}, imported {imported}, skipped {skipped}, energy {energy_kwh:.2f} kWh",
                     chunk_index=chunk_index,
                 )
                 chunk_start = chunk_end + timedelta(days=1)
 
-            final_message = "Synchronizacja archiwalna zakonczona" if auto else "Import archiwalny zakonczony"
-            self._record_event(level="success", title="Zakonczono", message=final_message)
+            final_message = "Historical synchronization completed" if auto else "Historical import completed"
+            self._record_event(level="success", title="Completed", message=final_message)
             self._finish("completed", running=False, message=final_message)
         except Exception as exc:
             logger.exception("Historical import failed")
-            self._record_event(level="error", title="Blad importu", message=str(exc))
-            self._finish("failed", running=False, message="Import archiwalny zakonczyl sie bledem.", last_error=str(exc))
+            self._record_event(level="error", title="Import error", message=str(exc))
+            self._finish("failed", running=False, message="Historical import finished with an error.", last_error=str(exc))
 
     def _process_chunk(self, *, chunk_index: int, start_day: date, end_day: date, force: bool) -> tuple[int, int, float, bool]:
         imported_days = 0
@@ -303,9 +303,9 @@ class HistoricalSyncService:
                 self._advance_day(
                     day,
                     imported=False,
-                    message=f"Pominieto {day.isoformat()} - dzien juz istnieje w cache",
+                    message=f"Skipped {day.isoformat()} - day already exists in cache",
                     level="warn",
-                    title="Pominieto dzien",
+                    title="Day skipped",
                     chunk_index=chunk_index,
                 )
                 continue
@@ -316,9 +316,9 @@ class HistoricalSyncService:
                 self._advance_day(
                     day,
                     imported=False,
-                    message=f"Pominieto {day.isoformat()} - brak probek w InfluxDB",
+                    message=f"Skipped {day.isoformat()} - no samples in InfluxDB",
                     level="warn",
-                    title="Brak probek",
+                    title="No samples",
                     chunk_index=chunk_index,
                 )
                 continue
@@ -336,9 +336,9 @@ class HistoricalSyncService:
             self._advance_day(
                 day,
                 imported=True,
-                message=f"Zaimportowano {day.isoformat()} ({total:.2f} kWh)",
+                message=f"Imported {day.isoformat()} ({total:.2f} kWh)",
                 level="success",
-                title="Zaimportowano dzien",
+                title="Day imported",
                 chunk_index=chunk_index,
                 energy_kwh=total,
             )
@@ -366,7 +366,7 @@ class HistoricalSyncService:
             self._state.message = message
             self._refresh_coverage(lock_held=True)
             self._refresh_runtime_metrics(lock_held=True)
-        suffix = f" Energia: {energy_kwh:.2f} kWh." if imported and energy_kwh is not None else ""
+        suffix = f" Energy: {energy_kwh:.2f} kWh." if imported and energy_kwh is not None else ""
         self._record_event(
             level=level,
             title=title,
@@ -383,19 +383,19 @@ class HistoricalSyncService:
             end_date=chunk_end,
             state="running",
             started_at=datetime.utcnow(),
-            note=f"Aktywny chunk {chunk_start.isoformat()} -> {chunk_end.isoformat()}",
+            note=f"Active chunk {chunk_start.isoformat()} -> {chunk_end.isoformat()}",
         )
         with self._state_lock:
             self._state.current_chunk_start = chunk_start
             self._state.current_chunk_end = chunk_end
             self._state.active_chunk_index = chunk_index
-            self._state.message = f"Przetwarzanie zakresu {chunk_start.isoformat()} -> {chunk_end.isoformat()}"
+            self._state.message = f"Processing range {chunk_start.isoformat()} -> {chunk_end.isoformat()}"
             self._upsert_chunk_locked(chunk)
             self._refresh_runtime_metrics(lock_held=True)
         self._record_event(
             level="info",
             title=f"Chunk {chunk_index}/{total_chunks}",
-            message=f"Start zakresu {chunk_start.isoformat()} -> {chunk_end.isoformat()}",
+            message=f"Starting range {chunk_start.isoformat()} -> {chunk_end.isoformat()}",
             chunk_index=chunk_index,
         )
 

backend/app/services/kiosk_settings.py

@@ -77,7 +77,7 @@ class KioskSettingsService:
             return normalized
         if normalized.startswith(USER_MODE_PREFIX) and len(normalized) > len(USER_MODE_PREFIX):
             return normalized
-        raise ValueError("Mode musi byc jednym z: public, private")
+        raise ValueError("Mode must be one of: public, private")
 
     def _normalize_widgets(self, widgets: Any) -> list[str]:
         if not isinstance(widgets, list):

backend/app/services/realtime.py

@@ -50,34 +50,34 @@ class RealtimeService:
         inverter_temp = to_float(_value(latest, "inverter_temp"))
 
         hero_cards = [
-            self._hero_card("ac_power", ac_power, subtitle="Aktualna moc AC"),
-            self._hero_card("dc_power_total", total_dc_power, label="Moc DC laczna", unit="W", subtitle="Suma stringow DC"),
-            self._hero_card("energy_today", energy_today, label="Energia dzis", unit="kWh", subtitle="Liczona z danych Influx"),
-            self._hero_card("energy_total", total_energy, label="Energia laczna", unit="kWh", subtitle="Licznik calkowity"),
+            self._hero_card("ac_power", ac_power, subtitle="Current AC power"),
+            self._hero_card("dc_power_total", total_dc_power, label="Total DC power", unit="W", subtitle="Sum of DC strings"),
+            self._hero_card("energy_today", energy_today, label="Energy today", unit="kWh", subtitle="Calculated from Influx data"),
+            self._hero_card("energy_total", total_energy, label="Total energy", unit="kWh", subtitle="Lifetime counter"),
         ]
         if inverter_temp is not None:
-            hero_cards.append(self._hero_card("inverter_temp", inverter_temp, label="Temp. falownika", unit="°C", subtitle="Sensor opcjonalny"))
+            hero_cards.append(self._hero_card("inverter_temp", inverter_temp, label="Inverter temperature", unit="°C", subtitle="Optional sensor"))
 
         kpis = {
-            "energy_today": custom_metric_value("energy_today", "Energia dzis", energy_today, unit="kWh", precision=2, status="ok"),
-            "energy_yesterday": custom_metric_value("energy_yesterday", "Energia wczoraj", energy_yesterday, unit="kWh", precision=2, status="ok"),
+            "energy_today": custom_metric_value("energy_today", "Energy today", energy_today, unit="kWh", precision=2, status="ok"),
+            "energy_yesterday": custom_metric_value("energy_yesterday", "Energy yesterday", energy_yesterday, unit="kWh", precision=2, status="ok"),
             "energy_total": custom_metric_value(
                 "energy_total",
-                "Energia laczna",
+                "Total energy",
                 total_energy,
                 unit="kWh",
                 precision=2,
                 timestamp=_timestamp(latest, "energy_total"),
                 status="ok",
             ),
-            "dc_power_total": custom_metric_value("dc_power_total", "Moc DC laczna", total_dc_power, unit="W", precision=0, status="ok"),
+            "dc_power_total": custom_metric_value("dc_power_total", "Total DC power", total_dc_power, unit="W", precision=0, status="ok"),
         }
 
         comparison = compare_delta_pct(energy_today, energy_yesterday)
         if comparison is not None:
             kpis["today_vs_yesterday"] = custom_metric_value(
                 "today_vs_yesterday",
-                "Dzis vs wczoraj",
+                "Today vs yesterday",
                 comparison,
                 unit="%",
                 precision=2,
@@ -97,7 +97,7 @@ class RealtimeService:
         status.append(
             custom_metric_value(
                 "data_refresh",
-                "Ostatni odczyt energii",
+                "Last energy reading",
                 _timestamp(latest, "energy_total").isoformat() if _timestamp(latest, "energy_total") else None,
                 status="ok" if _timestamp(latest, "energy_total") else "neutral",
                 kind="text",
@@ -144,7 +144,7 @@ class RealtimeService:
                 series.append(
                     {
                         "metric_id": metric.id,
-                        "label": metric.label if slot != "power" else group["label"],
+                        "label": f"{group['label']} power" if slot == "power" else f"{group['label']} voltage" if slot == "voltage" else metric.label,
                         "unit": metric.unit,
                         "points": self.influx.gauge_history(metric, window.start, window.end, interval=interval, aggregate="mean"),
                     }

backend/app/storage/auth_users.py

@@ -108,6 +108,23 @@ class SQLiteAuthUserRepository:
                 return None
         return self.get_by_username(username)
 
+    def update_role(self, username: str, role: str) -> AuthUser | None:
+        now = datetime.utcnow().isoformat()
+        with self.connect() as conn:
+            cursor = conn.execute(
+                "UPDATE auth_users SET role = ?, updated_at = ? WHERE username = ?",
+                (role, now, username),
+            )
+            if cursor.rowcount == 0:
+                return None
+        return self.get_by_username(username)
+
+    def count_admin_users(self) -> int:
+        with self.connect() as conn:
+            row = conn.execute(
+                "SELECT COUNT(*) AS count FROM auth_users WHERE role = 'admin' AND is_active = 1"
+            ).fetchone()
+        return int(row['count']) if row is not None else 0
 
     def list_users(self) -> list[AuthUser]:
         with self.connect() as conn:

backend/backfill.py

@@ -7,11 +7,11 @@ from app.services.historical_sync import get_historical_sync_service
 from app.utils.serialization import to_plain
 
 
-parser = argparse.ArgumentParser(description="Import dziennych agregatow PV z InfluxDB do lokalnego cache SQLite")
-parser.add_argument("--start-date", dest="start_date", help="Data startowa YYYY-MM-DD")
-parser.add_argument("--end-date", dest="end_date", help="Data koncowa YYYY-MM-DD")
-parser.add_argument("--chunk-days", dest="chunk_days", type=int, default=7, help="Liczba dni na chunk")
-parser.add_argument("--force", action="store_true", help="Nadpisz dni juz zapisane w cache")
+parser = argparse.ArgumentParser(description="Import daily PV aggregates from InfluxDB into the local SQLite cache")
+parser.add_argument("--start-date", dest="start_date", help="Start date YYYY-MM-DD")
+parser.add_argument("--end-date", dest="end_date", help="End date YYYY-MM-DD")
+parser.add_argument("--chunk-days", dest="chunk_days", type=int, default=7, help="Number of days per chunk")
+parser.add_argument("--force", action="store_true", help="Overwrite days already stored in the cache")
 args = parser.parse_args()
 
 service = get_historical_sync_service()

backend/config.py

@@ -59,7 +59,7 @@ APP_CONFIG = {
 }
 
 SITE_CONFIG = {
-    "site_name": os.getenv("SITE_NAME", "Domowa instalacja PV"),
+    "site_name": os.getenv("SITE_NAME", "Home PV installation"),
     "timezone": APP_CONFIG["timezone"],
     "installed_power_kwp": env_float("PV_INSTALLED_POWER_KWP", 9.99),
     "currency": os.getenv("SITE_CURRENCY", "PLN"),
@@ -91,20 +91,20 @@ CORS_ORIGINS = [
 ]
 
 TIME_RANGES = {
-    "today": {"label": "Dzis", "special": "today"},
-    "yesterday": {"label": "Wczoraj", "special": "yesterday"},
+    "today": {"label": "Today", "special": "today"},
+    "yesterday": {"label": "Yesterday", "special": "yesterday"},
     "6h": {"label": "6h", "seconds": 6 * 3600},
     "12h": {"label": "12h", "seconds": 12 * 3600},
     "24h": {"label": "24h", "seconds": 24 * 3600},
     "48h": {"label": "48h", "seconds": 48 * 3600},
-    "1d": {"label": "1 dzien", "seconds": 1 * 24 * 3600},
-    "3d": {"label": "3 dni", "seconds": 3 * 24 * 3600},
-    "7d": {"label": "7 dni", "seconds": 7 * 24 * 3600},
-    "14d": {"label": "14 dni", "seconds": 14 * 24 * 3600},
-    "30d": {"label": "30 dni", "seconds": 30 * 24 * 3600},
-    "60d": {"label": "60 dni", "seconds": 60 * 24 * 3600},
-    "90d": {"label": "90 dni", "seconds": 90 * 24 * 3600},
-    "365d": {"label": "365 dni", "seconds": 365 * 24 * 3600},
+    "1d": {"label": "1 day", "seconds": 1 * 24 * 3600},
+    "3d": {"label": "3 days", "seconds": 3 * 24 * 3600},
+    "7d": {"label": "7 days", "seconds": 7 * 24 * 3600},
+    "14d": {"label": "14 days", "seconds": 14 * 24 * 3600},
+    "30d": {"label": "30 days", "seconds": 30 * 24 * 3600},
+    "60d": {"label": "60 days", "seconds": 60 * 24 * 3600},
+    "90d": {"label": "90 days", "seconds": 90 * 24 * 3600},
+    "365d": {"label": "365 days", "seconds": 365 * 24 * 3600},
     "ytd": {"label": "YTD", "special": "ytd"},
 }
 
@@ -119,20 +119,20 @@ ANALYTICS = {
     "default_range": os.getenv("ANALYTICS_DEFAULT_RANGE", "30d"),
     "default_bucket": os.getenv("ANALYTICS_DEFAULT_BUCKET", "day"),
     "bucket_labels": {
-        "day": "Dzien",
-        "week": "Tydzien",
-        "month": "Miesiac",
-        "year": "Rok",
+        "day": "Day",
+        "week": "Week",
+        "month": "Month",
+        "year": "Year",
     },
     "compare_modes": {
-        "none": "Porownanie",
-        "previous_period": "Poprzedni okres",
-        "previous_year": "Poprzedni rok",
-        "previous_year_2": "2 lata wstecz",
-        "previous_year_3": "3 lata wstecz",
-        "previous_month_12": "12 miesiecy wstecz",
-        "previous_month_24": "24 miesiace wstecz",
-        "custom_multi": "Wlasne zakresy",
+        "none": "Comparison",
+        "previous_period": "Previous period",
+        "previous_year": "Previous year",
+        "previous_year_2": "2 years back",
+        "previous_year_3": "3 years back",
+        "previous_month_12": "12 months back",
+        "previous_month_24": "24 months back",
+        "custom_multi": "Custom ranges",
     },
 }
 
@@ -208,7 +208,7 @@ register_metric(
     entity_id=os.getenv("PV_AC_POWER_ENTITY", "sofarsolar_ac_power"),
     measurement=os.getenv("PV_AC_POWER_MEASUREMENT", "W"),
     unit="W",
-    label="Moc AC",
+    label="AC Power",
     precision=0,
 )
 register_metric(
@@ -216,7 +216,7 @@ register_metric(
     entity_id=os.getenv("PV_TOTAL_ENERGY_ENTITY", "sofarsolar_energy_total"),
     measurement=os.getenv("PV_TOTAL_ENERGY_MEASUREMENT", "kWh"),
     unit="kWh",
-    label="Energia laczna",
+    label="Total Energy",
     kind="counter",
     precision=2,
 )
@@ -225,7 +225,7 @@ register_metric(
     entity_id=os.getenv("PV_INVERTER_TEMP_ENTITY", "sofarsolar_temprature_inverter"),
     measurement=os.getenv("PV_INVERTER_TEMP_MEASUREMENT", "°C"),
     unit="°C",
-    label="Temperatura falownika",
+    label="Inverter Temperature",
     precision=1,
 )
 
@@ -243,7 +243,7 @@ for index, defaults in STRING_DEFAULTS.items():
         entity_id=os.getenv(f"PV_STRING_{index}_POWER_ENTITY", defaults["power"]),
         measurement=os.getenv(f"PV_STRING_{index}_POWER_MEASUREMENT", "W"),
         unit="W",
-        label=f"{label} moc",
+        label=f"{label} power",
         precision=0,
     )
     voltage_metric_id = register_metric(
@@ -251,7 +251,7 @@ for index, defaults in STRING_DEFAULTS.items():
         entity_id=os.getenv(f"PV_STRING_{index}_VOLTAGE_ENTITY", defaults["voltage"]),
         measurement=os.getenv(f"PV_STRING_{index}_VOLTAGE_MEASUREMENT", "V"),
         unit="V",
-        label=f"{label} napiecie",
+        label=f"{label} voltage",
         precision=1,
     )
 

deploy/nginx/default.conf

@@ -10,6 +10,17 @@ server {
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
+    add_header Cache-Control "no-store, no-cache" always;
+  }
+
+  location /assets/ {
+    proxy_pass http://frontend:80;
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    add_header Cache-Control "public, max-age=31536000, immutable" always;
   }
 
   location / {
@@ -19,5 +30,7 @@ server {
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
-  }
+    proxy_hide_header etag;
+    add_header Cache-Control "no-store, no-cache" always;
+    }
 }

frontend/nginx.conf

@@ -6,6 +6,12 @@ server {
   root /usr/share/nginx/html;
   index index.html;
 
+  location /assets/ {
+    expires 1y;
+    add_header Cache-Control "public, max-age=31536000, immutable" always;
+    try_files $uri =404;
+  }
+
   location /api/ {
     proxy_pass http://backend:8105;
     proxy_http_version 1.1;
@@ -13,6 +19,7 @@ server {
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_set_header X-Real-IP $remote_addr;
+    add_header Cache-Control "no-store, no-cache" always;
   }
 
   location = /health {
@@ -22,9 +29,16 @@ server {
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Forwarded-Proto $scheme;
     proxy_set_header X-Real-IP $remote_addr;
+    add_header Cache-Control "no-store, no-cache" always;
+  }
+
+  location = /index.html {
+    add_header Cache-Control "no-store, no-cache" always;
+    try_files $uri =404;
   }
 
   location / {
+    add_header Cache-Control "no-store, no-cache" always;
     try_files $uri $uri/ /index.html;
   }
 }

frontend/src/App.tsx.bak

@@ -1,433 +0,0 @@
-import { useEffect, useMemo, useRef, useState, type ReactElement, type ReactNode } from "react";
-import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
-import type { EChartsOption } from "echarts";
-import {
-  IconArrowsMove,
-  IconBolt,
-  IconChartBar,
-  IconChecklist,
-  IconClockHour4,
-  IconDatabaseImport,
-  IconDeviceDesktop,
-  IconHistory,
-  IconLanguage,
-  IconLayoutDashboard,
-  IconLock,
-  IconLogin2,
-  IconLogout,
-  IconMoon,
-  IconPlayerPlay,
-  IconRefresh,
-  IconSettings,
-  IconSun,
-  IconTemperature,
-  IconX,
-} from "./components/common/Icons";
-import { api } from "./api/client";
-import { EChart } from "./components/common/EChart";
-import { labelForMetric, localeForLanguage, normalizeLanguage, t, translateCompareMode, type Language } from "./i18n";
-import { useAnalytics, useDashboardConfig, useHistoricalImport, useRealtimeHistory, useRealtimeSocket } from "./hooks";
-import { formatDateTime, formatDurationShort, formatPercent, formatShortTime, formatValue } from "./lib/format";
-import type {
-  AnalyticsPayload,
-  AuthStatus,
-  AuthUsersPayload,
-  BucketPoint,
-  DashboardConfig,
-  DistributionPayload,
-  HistoryPayload,
-  HistoricalStatus,
-  KioskSettingsPayload,
-  MetricValue,
-  SnapshotGroupRow,
-  SnapshotPayload,
-} from "./types";
-
-type ThemeMode = "light" | "dark";
-type TabKey = "realtime" | "archive" | "analytics" | "warehouse" | "kiosk" | "settings";
-type ViewMode = "normal" | "kiosk";
-type WidgetId = "hero" | "quickMetrics" | "history" | "status" | "strings" | "production" | "comparison" | "distribution" | "importStatus";
-type BlockTarget = "hero" | "quick";
-
-const STORAGE_KEYS = {
-  theme: "pv-theme-v4",
-  language: "pv-language-v4",
-  kioskWidgets: "pv-kiosk-widgets-v4",
-  viewMode: "pv-view-mode-v4",
-  blockConfig: "pv-block-config-v4",
-  liveMetrics: "pv-live-metrics-v4",
-  archiveMetrics: "pv-archive-metrics-v4",
-};
-
-const DEFAULT_KIOSK_WIDGETS: WidgetId[] = ["hero", "history", "strings", "status", "production", "comparison", "importStatus"];
-const DEFAULT_BLOCK_CONFIG: Record<BlockTarget, string[]> = {
-  hero: ["ac_power", "dc_power_total", "energy_today", "energy_total"],
-  quick: ["energy_today", "energy_yesterday", "energy_total", "dc_power_total", "today_vs_yesterday"],
-};
-const DEFAULT_LIVE_METRICS = ["ac_power", "string_1_power", "string_2_power"];
-const PUBLIC_KIOSK = new URL(window.location.href).searchParams.get("publicKiosk") === "1";
-
-const widgetOrder: Array<{ id: WidgetId; tab: TabKey; icon: typeof IconLayoutDashboard }> = [
-  { id: "hero", tab: "realtime", icon: IconLayoutDashboard },
-  { id: "quickMetrics", tab: "realtime", icon: IconChecklist },
-  { id: "history", tab: "realtime", icon: IconHistory },
-  { id: "status", tab: "realtime", icon: IconBolt },
-  { id: "strings", tab: "realtime", icon: IconArrowsMove },
-  { id: "production", tab: "analytics", icon: IconChartBar },
-  { id: "comparison", tab: "analytics", icon: IconRefresh },
-  { id: "distribution", tab: "analytics", icon: IconChartBar },
-  { id: "importStatus", tab: "warehouse", icon: IconDatabaseImport },
-];
-
-function readStorage<T>(key: string, fallback: T, parser?: (raw: string) => T): T {
-  try {
-    const raw = window.localStorage.getItem(key);
-    if (!raw) return fallback;
-    return parser ? parser(raw) : (JSON.parse(raw) as T);
-  } catch {
-    return fallback;
-  }
-}
-function writeStorage<T>(key: string, value: T): void {
-  try { window.localStorage.setItem(key, typeof value === "string" ? value : JSON.stringify(value)); } catch {}
-}
-function parseViewModeFromLocation(): ViewMode {
-  const url = new URL(window.location.href);
-  return url.searchParams.get("mode") === "kiosk" ? "kiosk" : "normal";
-}
-function syncViewModeToLocation(mode: ViewMode): void {
-  const url = new URL(window.location.href);
-  if (mode === "kiosk") url.searchParams.set("mode", "kiosk"); else url.searchParams.delete("mode");
-  window.history.replaceState({}, "", url.toString());
-}
-function iconForMetric(metricId: string) {
-  if (metricId.includes("temp")) return <IconTemperature size={18} />;
-  if (metricId.includes("energy")) return <IconChartBar size={18} />;
-  return <IconBolt size={18} />;
-}
-function buildWidgetLabel(language: Language, widgetId: WidgetId): string {
-  const labels: Record<WidgetId, string> = {
-    hero: language === "en" ? "Hero metrics" : "Karty hero",
-    quickMetrics: t(language, "quickMetrics"),
-    history: t(language, "chartPowerHistory"),
-    status: t(language, "systemStatus"),
-    strings: t(language, "strings"),
-    production: t(language, "chartProduction"),
-    comparison: t(language, "chartComparison"),
-    distribution: t(language, "chartDistribution"),
-    importStatus: language === "en" ? "Data warehouse" : "Hurtownia danych",
-  };
-  return labels[widgetId];
-}
-function buildTablerChartTheme(theme: ThemeMode) {
-  return theme === "dark"
-    ? { text: "#cbd5e1", grid: "rgba(255,255,255,0.08)", tooltip: "rgba(15, 23, 42, 0.96)", series: ["#4dabf7", "#20c997", "#f59f00", "#e64980", "#9775fa", "#ff922b", "#66d9e8", "#adb5bd", "#94d82d", "#ffa8a8"] }
-    : { text: "#334155", grid: "rgba(15,23,42,0.12)", tooltip: "rgba(255,255,255,0.98)", series: ["#206bc4", "#2fb344", "#f59f00", "#d63384", "#7950f2", "#fd7e14", "#1098ad", "#868e96", "#74b816", "#fa5252"] };
-}
-function buildLiveHistoryOption(history: HistoryPayload | undefined, theme: ThemeMode, language: Language): EChartsOption {
-  const palette = buildTablerChartTheme(theme);
-  const series = history?.series ?? [];
-  return {
-    color: palette.series,
-    tooltip: { trigger: "axis", backgroundColor: palette.tooltip, borderColor: palette.grid, textStyle: { color: palette.text } },
-    legend: { top: 0, textStyle: { color: palette.text }, itemGap: 16 },
-    grid: { left: 12, right: 16, top: 48, bottom: 12, containLabel: true },
-    xAxis: { type: "category", boundaryGap: false, axisLabel: { color: palette.text }, axisLine: { lineStyle: { color: palette.grid } }, data: (series[0]?.points ?? []).map((point: any) => formatShortTime(point.timestamp, localeForLanguage(language))) },
-    yAxis: { type: "value", axisLabel: { color: palette.text }, splitLine: { lineStyle: { color: palette.grid } } },
-    series: series.map((item, index) => ({ name: item.label, type: "line", smooth: true, connectNulls: true, showSymbol: false, lineStyle: { width: index === 0 ? 3 : 2 }, emphasis: { focus: "series" }, data: item.points.map((point: any) => point.value) })),
-  };
-}
-function buildBarOption(points: BucketPoint[], unit: string, theme: ThemeMode, language: Language): EChartsOption {
-  const palette = buildTablerChartTheme(theme);
-  return {
-    color: [palette.series[0]],
-    tooltip: { trigger: "axis", backgroundColor: palette.tooltip, borderColor: palette.grid, textStyle: { color: palette.text }, valueFormatter: (value) => formatValue(Number(value), unit, 2, localeForLanguage(language)) },
-    grid: { left: 12, right: 16, top: 16, bottom: 40, containLabel: true },
-    xAxis: { type: "category", axisLabel: { color: palette.text, rotate: points.length > 12 ? 32 : 0 }, axisLine: { lineStyle: { color: palette.grid } }, data: points.map((point) => point.label) },
-    yAxis: { type: "value", name: unit, nameTextStyle: { color: palette.text }, axisLabel: { color: palette.text }, splitLine: { lineStyle: { color: palette.grid } } },
-    series: [{ type: "bar", barMaxWidth: 24, itemStyle: { borderRadius: [6, 6, 0, 0] }, data: points.map((point) => point.value) }],
-  };
-}
-function buildComparisonOption(data: AnalyticsPayload | undefined, theme: ThemeMode, language: Language): EChartsOption {
-  const palette = buildTablerChartTheme(theme);
-  const current = data?.current ?? [];
-  const comparisonSeries = (data?.comparisons?.length ? data.comparisons : [{ key: data?.compare_mode ?? "comparison", label: t(language, "comparisonPeriod"), points: data?.comparison ?? [] }]).filter((item) => item.points?.length).map((item) => ({ ...item, label: translateCompareMode(language, item.label || item.key) }));
-  return {
-    color: palette.series,
-    tooltip: { trigger: "axis", axisPointer: { type: "shadow" }, backgroundColor: palette.tooltip, borderColor: palette.grid, textStyle: { color: palette.text } },
-    legend: { top: 0, textStyle: { color: palette.text } },
-    grid: { left: 16, right: 20, top: 42, bottom: 18, containLabel: true },
-    xAxis: { type: "category", axisLabel: { color: palette.text, interval: 0, rotate: current.length > 12 ? 35 : 0 }, axisLine: { lineStyle: { color: palette.grid } }, data: current.map((point) => point.label) },
-    yAxis: { type: "value", axisLabel: { color: palette.text }, splitLine: { lineStyle: { color: palette.grid } } },
-    series: [
-      { name: t(language, "currentPeriod"), type: "bar", barMaxWidth: 18, data: current.map((point) => point.value) },
-      ...comparisonSeries.map((seriesItem, index) => ({ name: seriesItem.label, type: "bar" as const, barMaxWidth: 18, data: current.map((_, pointIndex) => seriesItem.points[pointIndex]?.value ?? 0), itemStyle: { opacity: index === 0 ? 0.9 : 0.75 } })),
-    ],
-  };
-}
-function buildPieOption(data: DistributionPayload | undefined, theme: ThemeMode): EChartsOption {
-  const palette = buildTablerChartTheme(theme);
-  const slices = [...(data?.slices ?? [])].sort((a, b) => b.value - a.value).slice(0, 12);
-  return {
-    color: palette.series,
-    tooltip: { trigger: "axis", axisPointer: { type: "shadow" }, backgroundColor: palette.tooltip, borderColor: palette.grid, textStyle: { color: palette.text } },
-    grid: { left: 16, right: 28, top: 8, bottom: 8, containLabel: true },
-    xAxis: { type: "value", axisLabel: { color: palette.text }, splitLine: { lineStyle: { color: palette.grid } } },
-    yAxis: { type: "category", axisLabel: { color: palette.text }, data: slices.map((item) => item.label) },
-    series: [{ type: "bar", data: slices.map((item) => ({ value: item.value, label: { show: true, position: "right", formatter: `${item.share}%`, color: palette.text } })), barMaxWidth: 22, itemStyle: { borderRadius: [0, 6, 6, 0] } }],
-  };
-}
-
-function liveRangeOptions(language: Language) {
-  return [
-    { key: "today", label: language === "en" ? "Today" : "Dziś" },
-    { key: "yesterday", label: language === "en" ? "Yesterday" : "Wczoraj" },
-    { key: "6h", label: "6h" },
-    { key: "12h", label: "12h" },
-    { key: "24h", label: "24h" },
-    { key: "48h", label: "48h" },
-    { key: "7d", label: "7d" },
-  ];
-}
-function analyticsRangeOptions(language: Language) {
-  return [
-    { key: "today", label: language === "en" ? "Today" : "Dziś" },
-    { key: "yesterday", label: language === "en" ? "Yesterday" : "Wczoraj" },
-    { key: "7d", label: "7d" },
-    { key: "30d", label: "30d" },
-    { key: "90d", label: "90d" },
-    { key: "365d", label: language === "en" ? "365 days" : "365 dni" },
-  ];
-}
-function archiveRangeOptions(language: Language) {
-  return [
-    { key: "1d", label: language === "en" ? "1 day" : "1 dzień" },
-    { key: "3d", label: "3d" },
-    { key: "7d", label: "7d" },
-    { key: "14d", label: "14d" },
-    { key: "30d", label: "30d" },
-    { key: "60d", label: "60d" },
-    { key: "custom", label: language === "en" ? "Custom" : "Ręczny" },
-  ];
-}
-function getInitialTheme(config?: DashboardConfig): ThemeMode {
-  return readStorage<ThemeMode>(STORAGE_KEYS.theme, (config?.defaults.theme as ThemeMode) ?? "dark", (raw) => (raw === "light" ? "light" : "dark"));
-}
-function getInitialLanguage(config?: DashboardConfig): Language {
-  return normalizeLanguage(readStorage<string>(STORAGE_KEYS.language, config?.defaults.language ?? "pl", (raw) => raw));
-}
-function getVisibleWidgets(ids: WidgetId[]): WidgetId[] { const base = ids.filter((id, index) => ids.indexOf(id) === index); return base.length > 0 ? base : DEFAULT_KIOSK_WIDGETS; }
-function toWidgetIds(ids: string[]): WidgetId[] { return getVisibleWidgets(ids.filter((id): id is WidgetId => widgetOrder.some((item) => item.id === id as WidgetId))); }
-function getMetricCandidates(snapshot: SnapshotPayload, config?: DashboardConfig) {
-  const fromConfig = (config?.visible_entities ?? [])
-    .filter((item) => item.kind === "gauge")
-    .map((item) => ({ metric_id: item.metric_id, label: item.label, unit: item.unit }));
-  const map = new Map<string, { metric_id: string; label: string; unit: string }>();
-  fromConfig.forEach((item) => map.set(item.metric_id, item));
-  return [...map.values()];
-}
-
-export default function App() {
-  const queryClient = useQueryClient();
-  const publicMode = PUBLIC_KIOSK;
-  const authQuery = useQuery<AuthStatus>({ queryKey: ["auth-status", publicMode], queryFn: api.getAuthStatus, staleTime: 20_000, retry: false, enabled: !publicMode });
-  const authEnabled = publicMode ? false : (authQuery.data?.enabled ?? true);
-  const authenticated = publicMode ? true : (authQuery.data ? (!authEnabled || authQuery.data.authenticated) : false);
-  const configQuery = useDashboardConfig(authenticated || authEnabled === false);
-  const config = configQuery.data;
-  const privateKioskSettingsQuery = useQuery<KioskSettingsPayload>({ queryKey: ["kiosk-settings", "private"], queryFn: () => api.getKioskSettings("private"), enabled: authenticated || authEnabled === false, staleTime: 30_000 });
-  const publicKioskSettingsQuery = useQuery<KioskSettingsPayload>({ queryKey: ["kiosk-settings", "public"], queryFn: () => api.getKioskSettings("public"), enabled: authenticated || authEnabled === false || publicMode, staleTime: 30_000 });
-
-  const [theme, setTheme] = useState<ThemeMode>(() => getInitialTheme(undefined));
-  const [language, setLanguage] = useState<Language>(() => getInitialLanguage(undefined));
-  const [activeTab, setActiveTab] = useState<TabKey>(publicMode ? "kiosk" : "realtime");
-  const [realtimeRange, setRealtimeRange] = useState("6h");
-  const [analyticsRange, setAnalyticsRange] = useState("30d");
-  const [bucket, setBucket] = useState("day");
-  const [compare, setCompare] = useState("previous_year");
-  const [analyticsStart, setAnalyticsStart] = useState("");
-  const [analyticsEnd, setAnalyticsEnd] = useState("");
-  const [compareRanges, setCompareRanges] = useState<Array<{ key: string; label: string; start: string; end: string }>>([{ key: "cmp_1", label: "Porównanie 1", start: "", end: "" }, { key: "cmp_2", label: "Porównanie 2", start: "", end: "" }]);
-  const [archiveStart, setArchiveStart] = useState("");
-  const [archiveEnd, setArchiveEnd] = useState("");
-  const [archiveRange, setArchiveRange] = useState("1d");
-  const [liveMetrics, setLiveMetrics] = useState<string[]>(() => readStorage(STORAGE_KEYS.liveMetrics, DEFAULT_LIVE_METRICS));
-  const [archiveMetrics, setArchiveMetrics] = useState<string[]>(() => readStorage(STORAGE_KEYS.archiveMetrics, DEFAULT_LIVE_METRICS));
-  const [viewMode, setViewMode] = useState<ViewMode>(() => { const fromUrl = parseViewModeFromLocation(); return fromUrl === "kiosk" ? fromUrl : readStorage<ViewMode>(STORAGE_KEYS.viewMode, "normal", (raw) => (raw === "kiosk" ? "kiosk" : "normal")); });
-  const [kioskWidgets, setKioskWidgets] = useState<WidgetId[]>(() => getVisibleWidgets(readStorage<WidgetId[]>(STORAGE_KEYS.kioskWidgets, DEFAULT_KIOSK_WIDGETS)));
-  const [kioskEditorMode, setKioskEditorMode] = useState<"private" | "public">("private");
-  const [privateKioskDraft, setPrivateKioskDraft] = useState<KioskSettingsPayload>({ mode: "private", widgets: DEFAULT_KIOSK_WIDGETS, realtime_range: "12h", analytics_range: "30d", analytics_bucket: "day", compare_mode: "none" });
-  const [publicKioskDraft, setPublicKioskDraft] = useState<KioskSettingsPayload>({ mode: "public", widgets: DEFAULT_KIOSK_WIDGETS, realtime_range: "12h", analytics_range: "30d", analytics_bucket: "day", compare_mode: "none" });
-  const [blockConfig, setBlockConfig] = useState<Record<BlockTarget, string[]>>(() => readStorage(STORAGE_KEYS.blockConfig, DEFAULT_BLOCK_CONFIG));
-  const [loginForm, setLoginForm] = useState({ username: "", password: "" });
-  const [loginError, setLoginError] = useState<string | null>(null);
-  const [newUser, setNewUser] = useState({ username: "", display_name: "", password: "", role: "user" });
-  const [passwordReset, setPasswordReset] = useState<{ username: string; password: string }>({ username: "", password: "" });
-  const initializedRef = useRef(false);
-
-  useEffect(() => {
-    if (!config || initializedRef.current) return;
-    initializedRef.current = true;
-    setActiveTab((config.defaults.tab as TabKey) || (publicMode ? "kiosk" : "realtime"));
-    setRealtimeRange(config.defaults.realtime_range);
-    setAnalyticsRange(config.defaults.analytics_range);
-    setBucket(config.defaults.analytics_bucket);
-    setTheme((current) => current || ((config.defaults.theme as ThemeMode) ?? "dark"));
-    setLanguage((current) => current || normalizeLanguage(config.defaults.language));
-  }, [config, publicMode]);
-  useEffect(() => { if (privateKioskSettingsQuery.data) setPrivateKioskDraft(privateKioskSettingsQuery.data); }, [privateKioskSettingsQuery.data]);
-  useEffect(() => { if (publicKioskSettingsQuery.data) setPublicKioskDraft(publicKioskSettingsQuery.data); }, [publicKioskSettingsQuery.data]);
-  useEffect(() => { document.documentElement.setAttribute("data-bs-theme", theme); document.body.setAttribute("data-bs-theme", theme); writeStorage(STORAGE_KEYS.theme, theme); }, [theme]);
-  useEffect(() => { writeStorage(STORAGE_KEYS.language, language); }, [language]);
-  useEffect(() => { syncViewModeToLocation(viewMode); writeStorage(STORAGE_KEYS.viewMode, viewMode); }, [viewMode]);
-  useEffect(() => { writeStorage(STORAGE_KEYS.kioskWidgets, kioskWidgets); }, [kioskWidgets]);
-  useEffect(() => { writeStorage(STORAGE_KEYS.blockConfig, blockConfig); }, [blockConfig]);
-  useEffect(() => { writeStorage(STORAGE_KEYS.liveMetrics, liveMetrics); }, [liveMetrics]);
-  useEffect(() => { writeStorage(STORAGE_KEYS.archiveMetrics, archiveMetrics); }, [archiveMetrics]);
-
-  const dataEnabled = authenticated || authEnabled === false;
-  const { snapshot, connected, lastUpdated } = useRealtimeSocket(dataEnabled);
-  const metricCandidates = useMemo(() => getMetricCandidates(snapshot, config), [snapshot, config]);
-  useEffect(() => {
-    if (!metricCandidates.length) return;
-    const allowed = new Set(metricCandidates.map((item) => item.metric_id));
-    setLiveMetrics((current) => {
-      const filtered = current.filter((item) => allowed.has(item));
-      return filtered.length ? filtered : metricCandidates.slice(0, 3).map((item) => item.metric_id);
-    });
-    setArchiveMetrics((current) => {
-      const filtered = current.filter((item) => allowed.has(item));
-      return filtered.length ? filtered : metricCandidates.slice(0, 3).map((item) => item.metric_id);
-    });
-  }, [metricCandidates]);
-  const liveHistoryMetrics = useMemo(() => liveMetrics.filter((item) => item !== "inverter_temp"), [liveMetrics]);
-  const effectiveKioskSettings = publicMode ? publicKioskDraft : privateKioskDraft;
-  const kioskActive = publicMode || viewMode === "kiosk";
-  const effectiveKioskWidgets = toWidgetIds(kioskActive ? effectiveKioskSettings.widgets : kioskWidgets);
-  const effectiveRealtimeRange = kioskActive ? effectiveKioskSettings.realtime_range : realtimeRange;
-  const effectiveAnalyticsRange = kioskActive ? effectiveKioskSettings.analytics_range : analyticsRange;
-  const effectiveBucket = kioskActive ? effectiveKioskSettings.analytics_bucket : bucket;
-  const effectiveCompare = kioskActive ? effectiveKioskSettings.compare_mode : compare;
-  const historyQuery = useRealtimeHistory(effectiveRealtimeRange, dataEnabled, { metrics: liveHistoryMetrics, publicKiosk: publicMode });
-  const sanitizedCompareRanges = compareRanges.filter((item) => item.start && item.end);
-  const analyticsOptions = analyticsStart && analyticsEnd && !kioskActive ? { start: analyticsStart, end: analyticsEnd, publicKiosk: publicMode, compareRanges: effectiveCompare === "custom_multi" ? sanitizedCompareRanges : undefined } : { publicKiosk: publicMode, compareRanges: effectiveCompare === "custom_multi" ? sanitizedCompareRanges : undefined };
-  const analyticsQuery = useAnalytics(analyticsStart && analyticsEnd && !kioskActive ? "custom" : effectiveAnalyticsRange, effectiveBucket, effectiveCompare, dataEnabled, analyticsOptions);
-  const historical = useHistoricalImport(dataEnabled && !publicMode);
-  const archiveQuery = useRealtimeHistory(archiveStart && archiveEnd ? "custom" : archiveRange, dataEnabled, { start: archiveStart || undefined, end: archiveEnd || undefined, metrics: archiveMetrics, publicKiosk: publicMode });
-  const usersQuery = useQuery<AuthUsersPayload>({ queryKey: ["auth-users"], queryFn: api.getUsers, enabled: dataEnabled && (authQuery.data?.role === "admin"), staleTime: 15_000 });
-
-  const loginMutation = useMutation({ mutationFn: () => api.login(loginForm.username, loginForm.password), onSuccess: async () => { setLoginError(null); setLoginForm((value) => ({ ...value, password: "" })); await queryClient.invalidateQueries({ queryKey: ["auth-status"] }); await queryClient.invalidateQueries({ queryKey: ["dashboard-config"] }); }, onError: (error: Error) => setLoginError(parseError(error) || t(language, "loginError")) });
-  const logoutMutation = useMutation({ mutationFn: api.logout, onSuccess: async () => { await queryClient.clear(); await queryClient.invalidateQueries({ queryKey: ["auth-status"] }); } });
-  const createUserMutation = useMutation({ mutationFn: () => api.createUser(newUser), onSuccess: async () => { setNewUser({ username: "", display_name: "", password: "", role: "user" }); await usersQuery.refetch(); } });
-  const resetPasswordMutation = useMutation({ mutationFn: () => api.resetUserPassword(passwordReset.username, passwordReset.password), onSuccess: async () => { setPasswordReset({ username: "", password: "" }); await usersQuery.refetch(); } });
-
-  const saveKioskSettingsMutation = useMutation({ mutationFn: (payload: KioskSettingsPayload) => api.saveKioskSettings(payload), onSuccess: async (_, payload) => { await queryClient.invalidateQueries({ queryKey: ["kiosk-settings", payload.mode] }); } });
-
-  const locale = localeForLanguage(language);
-  const widgetLabels = useMemo(() => { const map = new Map<WidgetId, string>(); for (const item of widgetOrder) map.set(item.id, buildWidgetLabel(language, item.id)); return map; }, [language]);
-  const summary = analyticsQuery.production.data?.summary;
-  const topStatus = snapshot.status ?? [];
-  const heroCards = snapshot.hero_cards.filter((card) => blockConfig.hero.includes(card.metric_id));
-  const quickMetrics = Object.values(snapshot.kpis ?? {}).filter((metric) => blockConfig.quick.includes(metric.metric_id));
-  const isAdmin = authQuery.data?.role === "admin";
-  const kioskUrl = `${window.location.origin}${window.location.pathname}?mode=kiosk&publicKiosk=1`;
-
-  const allWidgets: Record<WidgetId, ReactElement | null> = {
-    hero: <HeroCards cards={heroCards} locale={locale} language={language} />,
-    quickMetrics: <QuickMetrics metrics={quickMetrics} locale={locale} language={language} />,
-    history: <LiveHistoryPanel data={historyQuery.data} language={language} theme={theme} title={t(language, "chartPowerHistory")} subtitle={t(language, "realtimeSubtitle")} />,
-    status: <StatusPanel metrics={topStatus} locale={locale} language={language} />,
-    strings: <StringsPanel rows={snapshot.strings} locale={locale} language={language} />,
-    production: <ProductionPanel data={analyticsQuery.production.data} language={language} theme={theme} />,
-    comparison: compare !== "none" ? <ComparisonPanel data={analyticsQuery.production.data} language={language} theme={theme} /> : null,
-    distribution: <DistributionPanel data={analyticsQuery.distribution.data} language={language} theme={theme} locale={locale} />,
-    importStatus: <HistoricalPanel status={historical.status.data} language={language} locale={locale} compact />,
-  };
-  const renderWidget = (widgetId: WidgetId) => { const content = allWidgets[widgetId]; if (!content) return null; return <div key={widgetId} className={widgetId === "hero" ? "col-12" : widgetId === "history" ? "col-12 col-xxl-8" : "col-12 col-xxl-4"}>{content}</div>; };
-
-  if ((!publicMode && authQuery.isLoading) || (authEnabled && !authenticated && loginMutation.isPending)) return <LoadingScreen language={language} />;
-  if (authEnabled && !authenticated) return <LoginPage language={language} theme={theme} form={loginForm} onChange={setLoginForm} onSubmit={() => loginMutation.mutate()} onThemeToggle={() => setTheme((current) => (current === "dark" ? "light" : "dark"))} onLanguageToggle={() => setLanguage((current) => (current === "pl" ? "en" : "pl"))} loading={loginMutation.isPending} error={loginError} />;
-  if (configQuery.isLoading || !config) return <LoadingScreen language={language} />;
-
-  const navbar = (
-    <header className="navbar navbar-expand-md d-print-none pv-navbar">
-      <div className="container-xl">
-        <div className="navbar-brand navbar-brand-autodark d-flex align-items-center gap-2"><span className="avatar avatar-sm bg-primary-lt text-primary border-0"><IconBolt size={18} /></span><div><div className="fw-bold">{config.app.site_name}</div><div className="text-secondary small">{t(language, "operatorPanel")}</div></div></div>
-        <div className="navbar-nav flex-row order-md-last align-items-center gap-2">
-          <span className={`badge ${connected ? "bg-green-lt text-green" : "bg-yellow-lt text-yellow"}`}>{connected ? t(language, "connected") : t(language, "disconnected")}</span>
-          <button className="btn btn-icon btn-ghost-secondary" onClick={() => setTheme((current) => (current === "dark" ? "light" : "dark"))} title={t(language, "theme")}>{theme === "dark" ? <IconSun size={18} /> : <IconMoon size={18} />}</button>
-          <button className="btn btn-icon btn-ghost-secondary" onClick={() => setLanguage((current) => (current === "pl" ? "en" : "pl"))} title={t(language, "language")}><IconLanguage size={18} /></button>
-          {!publicMode ? <button className="btn btn-outline-primary" onClick={() => setViewMode((current) => (current === "normal" ? "kiosk" : "normal"))}><IconDeviceDesktop size={18} className="me-1" />{viewMode === "normal" ? t(language, "openKiosk") : t(language, "exitKiosk")}</button> : null}
-          {!publicMode ? <button className="btn btn-outline-secondary" onClick={() => logoutMutation.mutate()}><IconLogout size={18} className="me-1" />{t(language, "signOut")}</button> : null}
-        </div>
-      </div>
-    </header>
-  );
-  const menu = (
-    <div className="navbar-expand-md pv-subnav border-bottom"><div className="container-xl"><div className="navbar-collapse"><ul className="navbar-nav">
-      <NavItem icon={<IconLayoutDashboard size={18} />} active={activeTab === "realtime"} onClick={() => setActiveTab("realtime")} label={language === "en" ? "Live" : "Live"} />
-      <NavItem icon={<IconHistory size={18} />} active={activeTab === "archive"} onClick={() => setActiveTab("archive")} label={language === "en" ? "Historical live" : "Dane chwilowe"} />
-      <NavItem icon={<IconChartBar size={18} />} active={activeTab === "analytics"} onClick={() => setActiveTab("analytics")} label={t(language, "analytics")} />
-      <NavItem icon={<IconDatabaseImport size={18} />} active={activeTab === "warehouse"} onClick={() => setActiveTab("warehouse")} label={language === "en" ? "Data warehouse" : "Hurtownia danych"} />
-      <NavItem icon={<IconDeviceDesktop size={18} />} active={activeTab === "kiosk"} onClick={() => setActiveTab("kiosk")} label={t(language, "kiosk")} />
-      <NavItem icon={<IconSettings size={18} />} active={activeTab === "settings"} onClick={() => setActiveTab("settings")} label={t(language, "settings")} />
-    </ul><div className="ms-auto text-secondary small d-none d-md-flex align-items-center gap-2"><IconClockHour4 size={16} />{t(language, "updatedAt")}: {formatDateTime(lastUpdated, locale)}</div></div></div></div>
-  );
-
-  if (viewMode === "kiosk" || publicMode) {
-    return <div className="page kiosk-shell"><div className="container-fluid py-3 px-3 px-xl-4"><div className="d-flex flex-wrap justify-content-between align-items-center gap-2 mb-3"><div><div className="h2 mb-0">{config.app.site_name}</div><div className="text-secondary">{t(language, "kioskHint")}</div></div><div className="d-flex gap-2"><button className="btn btn-primary" onClick={() => requestFullscreen()}><IconDeviceDesktop size={18} className="me-1" />{t(language, "fullscreen")}</button>{!publicMode ? <button className="btn btn-outline-secondary" onClick={() => setViewMode("normal")}><IconX size={18} className="me-1" />{t(language, "exitKiosk")}</button> : null}</div></div><div className="row row-cards g-3">{effectiveKioskWidgets.map((widgetId) => renderWidget(widgetId))}</div></div></div>;
-  }
-
-  return (
-    <div className="page">{navbar}{menu}<div className="page-wrapper"><div className="page-body"><div className="container-xl">
-      {activeTab === "realtime" && <><PageHeader title={t(language, "realtimeOverview")} subtitle={t(language, "realtimeSubtitle")}><SegmentedSelect label={t(language, "liveRange")} value={realtimeRange} onChange={setRealtimeRange} options={liveRangeOptions(language)} /></PageHeader><div className="row row-cards g-3">{renderWidget("hero")}<div className="col-12 col-xl-4">{allWidgets.quickMetrics}</div><div className="col-12 col-xl-8">{allWidgets.history}</div><div className="col-12 col-xl-4">{allWidgets.status}</div><div className="col-12 col-xl-8">{allWidgets.strings}</div></div></>}
-
-      {activeTab === "archive" && <><PageHeader title={language === "en" ? "Historical live data" : "Dane chwilowe z historii"} subtitle={language === "en" ? "Browse all instant metrics for any past period." : "Podgląd metryk chwilowych dla dowolnego okresu, nie tylko live."}><div className="d-flex flex-wrap gap-2 align-items-end"><SegmentedSelect label={language === "en" ? "Range" : "Zakres"} value={archiveStart && archiveEnd ? "custom" : archiveRange} onChange={(value) => { setArchiveRange(value); applyArchivePreset(value, setArchiveStart, setArchiveEnd); }} options={archiveRangeOptions(language)} /><div><label className="form-label small mb-1">{language === "en" ? "From" : "Od"}</label><input className="form-control form-control-sm" type="datetime-local" value={archiveStart} onChange={(e) => { setArchiveRange("custom"); setArchiveStart(e.target.value); }} /></div><div><label className="form-label small mb-1">{language === "en" ? "To" : "Do"}</label><input className="form-control form-control-sm" type="datetime-local" value={archiveEnd} onChange={(e) => { setArchiveRange("custom"); setArchiveEnd(e.target.value); }} /></div></div></PageHeader><div className="row row-cards g-3"><div className="col-12 col-xl-4"><MetricSelectorCard language={language} title={language === "en" ? "Metrics on chart" : "Metryki na wykresie"} items={metricCandidates.filter((item) => item.metric_id !== "energy_total")} selected={archiveMetrics.filter((item) => item !== "energy_total")} onChange={setArchiveMetrics} /></div><div className="col-12 col-xl-8"><LiveHistoryPanel data={archiveQuery.data} language={language} theme={theme} title={language === "en" ? "Historical chart" : "Wykres historyczny"} subtitle={language === "en" ? "Raw instant metrics from InfluxDB only." : "Tylko surowe metryki chwilowe z InfluxDB."} /></div></div></>}
-
-      {activeTab === "analytics" && <><PageHeader title={t(language, "analyticsOverview")} subtitle={t(language, "analyticsSubtitle")}><div className="d-flex flex-wrap gap-2 align-items-end"><SegmentedSelect label={t(language, "range")} value={analyticsStart && analyticsEnd ? "custom" : analyticsRange} onChange={(value) => { if (value !== "custom") { setAnalyticsRange(value); setAnalyticsStart(""); setAnalyticsEnd(""); } }} options={[...config.capabilities.ranges.filter((item) => !["6h", "24h"].includes(item.key)).map((item) => ({ key: item.key, label: item.label })), { key: "custom", label: language === "en" ? "Custom" : "Ręczny" }]} /><SegmentedSelect label={t(language, "bucket")} value={bucket} onChange={setBucket} options={config.capabilities.buckets.map((item) => ({ key: item.key, label: translateBucket(language, item.key) }))} /><SegmentedSelect label={language === "en" ? "Comparison" : "Porównanie"} value={compare} onChange={setCompare} options={comparisonOptions(language)} /></div></PageHeader>{analyticsStart || analyticsEnd || (analyticsRange === "custom") || compare === "custom_multi" ? <div className="card pv-card mb-3"><div className="card-body d-flex flex-column gap-3"><div className="row g-3"><div className="col-md-3"><label className="form-label">{language === "en" ? "Start" : "Od"}</label><input className="form-control" type="datetime-local" value={analyticsStart} onChange={(e) => setAnalyticsStart(e.target.value)} /></div><div className="col-md-3"><label className="form-label">{language === "en" ? "End" : "Do"}</label><input className="form-control" type="datetime-local" value={analyticsEnd} onChange={(e) => setAnalyticsEnd(e.target.value)} /></div><div className="col-md-6 d-flex align-items-end"><button className="btn btn-outline-secondary" onClick={() => { setAnalyticsStart(""); setAnalyticsEnd(""); }}>{language === "en" ? "Use preset range" : "Wróć do gotowych zakresów"}</button></div></div>{compare === "custom_multi" ? <div className="border rounded-3 p-3"><div className="fw-semibold mb-3">{language === "en" ? "Comparison ranges" : "Zakresy porównawcze"}</div><div className="row g-3">{compareRanges.map((item, index) => <div className="col-12" key={item.key}><div className="row g-2 align-items-end"><div className="col-md-3"><label className="form-label">{language === "en" ? `Range ${index + 1} label` : `Etykieta ${index + 1}`}</label><input className="form-control" value={item.label} onChange={(e) => setCompareRanges(compareRanges.map((current) => current.key === item.key ? { ...current, label: e.target.value } : current))} /></div><div className="col-md-3"><label className="form-label">{language === "en" ? "From" : "Od"}</label><input className="form-control" type="datetime-local" value={item.start} onChange={(e) => setCompareRanges(compareRanges.map((current) => current.key === item.key ? { ...current, start: e.target.value } : current))} /></div><div className="col-md-3"><label className="form-label">{language === "en" ? "To" : "Do"}</label><input className="form-control" type="datetime-local" value={item.end} onChange={(e) => setCompareRanges(compareRanges.map((current) => current.key === item.key ? { ...current, end: e.target.value } : current))} /></div><div className="col-md-3"><button className="btn btn-outline-secondary w-100" onClick={() => setCompareRanges(compareRanges.length > 1 ? compareRanges.filter((current) => current.key !== item.key) : compareRanges)}>{language === "en" ? "Remove range" : "Usuń zakres"}</button></div></div></div>)}<div className="col-12"><button className="btn btn-primary" onClick={() => setCompareRanges([...compareRanges, { key: `cmp_${Date.now()}`, label: `${language === "en" ? "Range" : "Zakres"} ${compareRanges.length + 1}`, start: "", end: "" }])}>{language === "en" ? "Add range" : "Dodaj zakres"}</button></div></div></div> : null}</div></div> : null}<div className="row row-cards g-3"><div className="col-12"><SummaryCards summary={summary} language={language} locale={locale} compareLabel={comparisonOptions(language).find((item) => item.key === compare)?.label ?? compare} /></div><div className="col-12 col-xxl-8">{allWidgets.production}</div><div className="col-12 col-xxl-4">{allWidgets.distribution}</div>{compare !== "none" ? <div className="col-12">{allWidgets.comparison}</div> : null}</div></>}
-
-      {activeTab === "warehouse" && <><PageHeader title={language === "en" ? "Data warehouse" : "Hurtownia danych"} subtitle={language === "en" ? "Historical import and coverage." : "Import historyczny i pokrycie danych."} /><div className="row row-cards g-3"><div className="col-12 col-xxl-8"><HistoricalPanel status={historical.status.data} language={language} locale={locale} /></div><div className="col-12 col-xxl-4"><ImportControls status={historical.status.data} language={language} onStart={(payload) => historical.start.mutate(payload)} onSyncNow={() => historical.syncNow.mutate()} onCancel={() => historical.cancel.mutate()} /></div></div></>}
-
-      {activeTab === "kiosk" && <><PageHeader title={t(language, "kiosk")} subtitle={language === "en" ? "Kiosk layout and public access." : "Układ kiosku i dostęp publiczny."} /><div className="row row-cards g-3"><div className="col-12 col-xxl-8"><KioskSettingsEditorPanel language={language} value={kioskEditorMode === "public" ? publicKioskDraft : privateKioskDraft} onChange={(value) => kioskEditorMode === "public" ? setPublicKioskDraft(value) : setPrivateKioskDraft(value)} onModeChange={setKioskEditorMode} selectedMode={kioskEditorMode} labels={widgetLabels} buckets={config.capabilities.buckets} compareModes={config.capabilities.comparison_modes} saving={saveKioskSettingsMutation.isPending && saveKioskSettingsMutation.variables?.mode === kioskEditorMode} onSave={() => saveKioskSettingsMutation.mutate(kioskEditorMode === "public" ? publicKioskDraft : privateKioskDraft)} /></div><div className="col-12 col-xxl-4"><KioskLinkPanel language={language} kioskUrl={kioskUrl} settings={publicKioskDraft} /></div></div></>}
-
-      {activeTab === "settings" && <><PageHeader title={t(language, "settings")} subtitle={language === "en" ? "Appearance, metric blocks and admin users." : "Wygląd, bloki metryk i użytkownicy."} /><div className="row row-cards g-3"><div className="col-12 col-xxl-4"><AppearanceSecurityPanel language={language} theme={theme} setTheme={setTheme} viewMode={viewMode} setViewMode={setViewMode} authEnabled={config.auth?.enabled ?? false} userName={authQuery.data?.display_name ?? authQuery.data?.user ?? ""} /></div><div className="col-12 col-xxl-8"><div className="row g-3"><div className="col-12"><LiveChartMetricsPanel language={language} items={metricCandidates.filter((item) => item.metric_id !== "energy_total")} selected={liveMetrics.filter((item) => item !== "energy_total")} onChange={setLiveMetrics} /></div><div className="col-12"><BlockVisibilityPanel language={language} items={metricCandidates} config={blockConfig} onChange={setBlockConfig} /></div></div></div>{isAdmin ? <div className="col-12"><AdminUsersPanel language={language} users={usersQuery.data?.items ?? []} newUser={newUser} onNewUserChange={setNewUser} onCreate={() => createUserMutation.mutate()} passwordReset={passwordReset} onPasswordResetChange={setPasswordReset} onResetPassword={() => resetPasswordMutation.mutate()} /></div> : null}</div></>}
-    </div></div></div></div>
-  );
-}
-
-function parseError(error: Error): string | null { const match = error.message.match(/"detail"\s*:\s*"([^"]+)"/); return match?.[1] ?? error.message; }
-function requestFullscreen() { const element = document.documentElement as HTMLElement & { webkitRequestFullscreen?: () => Promise<void> | void; msRequestFullscreen?: () => Promise<void> | void; }; if (element.requestFullscreen) { void element.requestFullscreen(); return; } if (element.webkitRequestFullscreen) { void element.webkitRequestFullscreen(); return; } if (element.msRequestFullscreen) void element.msRequestFullscreen(); }
-function translateBucket(language: Language, key: string): string { const map: Record<string, { pl: string; en: string }> = { day: { pl: "Dzień", en: "Day" }, week: { pl: "Tydzień", en: "Week" }, month: { pl: "Miesiąc", en: "Month" }, year: { pl: "Rok", en: "Year" } }; return map[key]?.[language] ?? key; }
-function comparisonOptions(language: Language) { return [{ key: "none", label: translateCompareMode(language, "none") }, { key: "previous_period", label: translateCompareMode(language, "previous_period") }, { key: "previous_year", label: translateCompareMode(language, "previous_year") }, { key: "previous_year_2", label: translateCompareMode(language, "previous_year_2") }, { key: "previous_year_3", label: translateCompareMode(language, "previous_year_3") }, { key: "previous_month_12", label: translateCompareMode(language, "previous_month_12") }, { key: "previous_month_24", label: translateCompareMode(language, "previous_month_24") }, { key: "custom_multi", label: translateCompareMode(language, "custom_multi") }]; }
-
-function applyArchivePreset(rangeKey: string, setStart: (value: string) => void, setEnd: (value: string) => void) {
-  if (rangeKey !== "custom") {
-    setStart("");
-    setEnd("");
-  }
-}
-function LoadingScreen({ language }: { language: Language }) { return <div className="page page-center"><div className="container container-tight py-4 text-center"><div className="spinner-border text-primary mb-3" role="status" /><div className="text-secondary">{t(language, "loading")}…</div></div></div>; }
-function LoginPage({ language, theme, form, onChange, onSubmit, onThemeToggle, onLanguageToggle, loading, error }: { language: Language; theme: ThemeMode; form: { username: string; password: string }; onChange: (value: { username: string; password: string }) => void; onSubmit: () => void; onThemeToggle: () => void; onLanguageToggle: () => void; loading: boolean; error: string | null; }) { return <div className="page page-center login-page-shell"><div className="container container-tight py-4"><div className="text-center mb-4"><div className="avatar avatar-xl bg-primary-lt text-primary mb-3 border-0 mx-auto"><IconBolt size={28} /></div><h1 className="h2 mb-1">{t(language, "loginTitle")}</h1><div className="text-secondary">{t(language, "loginSubtitle")}</div></div><div className="card card-md login-card"><div className="card-body"><div className="d-flex justify-content-end gap-2 mb-3"><button className="btn btn-icon btn-ghost-secondary" onClick={onThemeToggle}>{theme === "dark" ? <IconSun size={18} /> : <IconMoon size={18} />}</button><button className="btn btn-icon btn-ghost-secondary" onClick={onLanguageToggle}><IconLanguage size={18} /></button></div><div className="mb-3"><label className="form-label">{t(language, "username")}</label><input className="form-control" value={form.username} onChange={(event) => onChange({ ...form, username: event.target.value })} autoComplete="username" /></div><div className="mb-3"><label className="form-label">{t(language, "password")}</label><input className="form-control" type="password" value={form.password} onChange={(event) => onChange({ ...form, password: event.target.value })} autoComplete="current-password" onKeyDown={(event) => event.key === "Enter" && onSubmit()} /></div>{error ? <div className="alert alert-danger py-2">{error}</div> : null}<button className="btn btn-primary w-100" onClick={onSubmit} disabled={loading}><IconLogin2 size={18} className="me-1" />{t(language, "signIn")}</button></div></div></div></div>; }
-function NavItem({ icon, active, onClick, label }: { icon: ReactElement; active: boolean; onClick: () => void; label: string }) { return <li className="nav-item"><button className={`nav-link border-0 bg-transparent pv-nav-link ${active ? "active" : ""}`} onClick={onClick}><span className="pv-nav-icon">{icon}</span><span className="pv-nav-title">{label}</span></button></li>; }
-function PageHeader({ title, subtitle, children }: { title: string; subtitle: string; children?: ReactNode }) { return <div className="page-header d-print-none mb-3"><div className="row align-items-center"><div className="col"><div className="page-pretitle">PV Insight</div><h2 className="page-title mb-1">{title}</h2><div className="text-secondary">{subtitle}</div></div>{children ? <div className="col-auto ms-auto">{children}</div> : null}</div></div>; }
-function SegmentedSelect({ label, value, onChange, options }: { label: string; value: string; onChange: (value: string) => void; options: Array<{ key: string; label: string }> }) { return <div className="btn-list align-items-center flex-nowrap"><span className="text-secondary small me-2 d-none d-md-inline">{label}</span><div className="btn-group">{options.map((option) => <button key={option.key} className={`btn btn-sm ${value === option.key ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => onChange(option.key)}>{option.label}</button>)}</div></div>; }
-function HeroCards({ cards, locale, language }: { cards: SnapshotPayload["hero_cards"]; locale: string; language: Language }) { return <div className="row row-cards g-3">{cards.map((card) => <div key={card.metric_id} className="col-12 col-sm-6 col-xl-3"><div className="card pv-card pv-hero-card h-100"><div className="card-body"><div className="d-flex align-items-center justify-content-between mb-3"><span className="avatar avatar-sm bg-primary-lt text-primary border-0">{iconForMetric(card.metric_id)}</span><span className="badge bg-primary-lt text-primary text-uppercase">{card.unit || "live"}</span></div><div className="text-secondary text-uppercase small mb-1">{labelForMetric(language, card.metric_id, card.label)}</div><div className="display-6 fw-bold mb-1">{formatValue(card.value, card.unit, card.unit === "kWh" ? 2 : 2, locale)}</div><div className="text-secondary small">{card.subtitle}</div></div></div></div>)}</div>; }
-function QuickMetrics({ metrics, locale, language }: { metrics: MetricValue[]; locale: string; language: Language }) { return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{t(language, "quickMetrics")}</h3></div><div className="list-group list-group-flush list-group-hoverable">{metrics.map((metric) => <div className="list-group-item" key={metric.metric_id}><div className="row align-items-center"><div className="col-auto text-primary">{iconForMetric(metric.metric_id)}</div><div className="col text-truncate"><div className="fw-medium">{labelForMetric(language, metric.metric_id, metric.label)}</div><div className="text-secondary small">{metric.unit || t(language, "status")}</div></div><div className="col-auto fw-semibold">{formatValue(metric.value, metric.unit, 2, locale)}</div></div></div>)}</div></div>; }
-function LiveHistoryPanel({ data, language, theme, title, subtitle }: { data?: HistoryPayload; language: Language; theme: ThemeMode; title: string; subtitle: string }) { return <div className="card pv-card h-100"><div className="card-header"><div><h3 className="card-title">{title}</h3><div className="text-secondary small">{subtitle}</div></div></div><div className="card-body"><EChart option={buildLiveHistoryOption(data, theme, language)} className="pv-chart" /></div></div>; }
-function StatusPanel({ metrics, locale, language }: { metrics: MetricValue[]; locale: string; language: Language }) { return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{t(language, "systemStatus")}</h3></div><div className="card-body d-flex flex-column gap-3">{metrics.map((metric) => <div key={metric.metric_id} className="d-flex justify-content-between align-items-center border rounded-3 px-3 py-2 status-row"><div><div className="fw-medium">{labelForMetric(language, metric.metric_id, metric.label)}</div><div className="text-secondary small">{metric.unit || t(language, "status")}</div></div><div className="fw-semibold">{formatValue(metric.value, metric.unit, 2, locale)}</div></div>)}</div></div>; }
-function StringsPanel({ rows, locale, language }: { rows: SnapshotGroupRow[]; locale: string; language: Language }) { return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{t(language, "strings")}</h3></div><div className="card-body"><div className="row g-3">{rows.length === 0 ? <div className="col-12 text-secondary">{t(language, "noDataDescription")}</div> : rows.map((row) => <div className="col-12 col-md-6" key={row.id}><div className="border rounded-3 p-3 h-100 string-panel"><div className="d-flex align-items-center justify-content-between mb-3"><div className="fw-semibold">{row.label}</div><span className="badge bg-azure-lt text-azure">DC</span></div><div className="d-flex flex-column gap-2">{Object.values(row.values).map((metric) => <div key={metric.metric_id} className="d-flex justify-content-between small"><span className="text-secondary">{labelForMetric(language, metric.metric_id, metric.label)}</span><span className="fw-medium">{formatValue(metric.value, metric.unit, 2, locale)}</span></div>)}</div></div></div>)}</div></div></div>; }
-function SummaryCards({ summary, language, locale, compareLabel }: { summary?: AnalyticsPayload["summary"]; language: Language; locale: string; compareLabel: string }) { const items = [{ key: t(language, "summaryTotal"), value: formatValue(summary?.total, summary?.unit ?? "kWh", 2, locale), badge: compareLabel }, { key: t(language, "summaryAverage"), value: formatValue(summary?.average_bucket, summary?.unit ?? "kWh", 2, locale) }, { key: t(language, "summaryBest"), value: summary ? `${summary.best_bucket_label} · ${formatValue(summary.best_bucket_value, summary.unit, 2, locale)}` : "--" }, { key: t(language, "summaryCo2"), value: formatValue(summary?.co2_saved_kg, "kg", 1, locale) }]; return <div className="row row-cards g-3">{items.map((item) => <div className="col-12 col-sm-6 col-xl-3" key={item.key}><div className="card pv-card h-100"><div className="card-body"><div className="text-secondary text-uppercase small mb-1">{item.key}</div><div className="h2 mb-0">{item.value}</div>{item.badge ? <div className="mt-2"><span className="badge bg-primary-lt text-primary">{item.badge}</span></div> : null}</div></div></div>)}</div>; }
-function ProductionPanel({ data, language, theme }: { data?: AnalyticsPayload; language: Language; theme: ThemeMode }) { return <div className="card pv-card h-100"><div className="card-header"><div><h3 className="card-title">{t(language, "chartProduction")}</h3><div className="text-secondary small">{t(language, "chartProductionSubtitle")}</div></div></div><div className="card-body"><EChart option={buildBarOption(data?.current ?? [], data?.unit ?? "kWh", theme, language)} className="pv-chart" /></div></div>; }
-function ComparisonPanel({ data, language, theme }: { data?: AnalyticsPayload; language: Language; theme: ThemeMode }) { return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{t(language, "chartComparison")}</h3></div><div className="card-body"><EChart option={buildComparisonOption(data, theme, language)} className="pv-chart" /></div></div>; }
-function DistributionPanel({ data, language, theme, locale }: { data?: DistributionPayload; language: Language; theme: ThemeMode; locale: string }) { return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{t(language, "chartDistribution")}</h3></div><div className="card-body"><div className="mb-3 fw-semibold">{formatValue(data?.total, data?.unit ?? "kWh", 2, locale)}</div><EChart option={buildPieOption(data, theme)} className="pv-chart-sm" /></div></div>; }
-function HistoricalPanel({ status, language, locale, compact = false }: { status?: HistoricalStatus; language: Language; locale: string; compact?: boolean }) { if (!status) return <div className="card pv-card h-100"><div className="card-body text-secondary">{t(language, "noDataDescription")}</div></div>; return <div className="card pv-card h-100"><div className="card-header"><div><h3 className="card-title">{language === "en" ? "Data warehouse" : "Hurtownia danych"}</h3><div className="text-secondary small">{t(language, "importArchiveSubtitle")}</div></div></div><div className="card-body d-flex flex-column gap-4"><div className="row g-3"><StatusStat label={t(language, "status")} value={status.message || status.state} /><StatusStat label={t(language, "coverage")} value={formatPercent(status.coverage.coverage_pct ?? 0, 1, locale)} /><StatusStat label={t(language, "importedDays")} value={formatValue(status.coverage.imported_days, "", 0, locale)} /><StatusStat label={t(language, "missingDays")} value={formatValue(status.coverage.missing_days, "", 0, locale)} /><StatusStat label={t(language, "throughput")} value={`${formatValue(status.avg_days_per_minute ?? 0, "", 1, locale)} / min`} /><StatusStat label={t(language, "eta")} value={formatDurationShort(status.estimated_remaining_seconds, locale)} /></div>{!compact ? <><div><div className="d-flex justify-content-between small mb-2"><span className="text-secondary">{t(language, "activeChunk")}</span><span className="fw-medium">{status.active_chunk_index}/{status.total_chunks}</span></div><div className="progress progress-sm"><div className="progress-bar" style={{ width: `${Math.min((status.processed_days / Math.max(status.total_days, 1)) * 100, 100)}%` }} /></div></div><div className="row g-3"><div className="col-12 col-xl-6"><div className="table-responsive"><table className="table table-vcenter card-table table-sm"><thead><tr><th>{t(language, "recentChunks")}</th><th>{t(language, "status")}</th><th className="text-end">kWh</th></tr></thead><tbody>{status.recent_chunks.map((chunk) => <tr key={`${chunk.chunk_index}-${chunk.start_date}`}><td><div className="fw-medium">#{chunk.chunk_index}</div><div className="text-secondary small">{chunk.start_date} → {chunk.end_date}</div></td><td>{chunk.state}</td><td className="text-end">{formatValue(chunk.energy_kwh, "kWh", 2, locale)}</td></tr>)}</tbody></table></div></div><div className="col-12 col-xl-6"><div className="list-group list-group-flush">{status.recent_events.map((event, index) => <div className="list-group-item px-0" key={`${event.timestamp}-${index}`}><div className="d-flex justify-content-between gap-2"><div><div className="fw-medium">{event.title}</div><div className="text-secondary small">{event.message}</div></div><div className="text-secondary small text-nowrap">{formatShortTime(event.timestamp, locale)}</div></div></div>)}</div></div></div></> : null}</div></div>; }
-function StatusStat({ label, value }: { label: string; value: string }) { return <div className="col-6 col-md-4 col-xl-2"><div className="border rounded-3 px-3 py-2 h-100 bg-body-tertiary"><div className="text-secondary small mb-1">{label}</div><div className="fw-semibold">{value}</div></div></div>; }
-function ImportControls({ status, language, onStart, onSyncNow, onCancel }: { status?: HistoricalStatus; language: Language; onStart: (payload: { start_date?: string; end_date?: string; chunk_days?: number; force?: boolean }) => void; onSyncNow: () => void; onCancel: () => void; }) { const [startDate, setStartDate] = useState(status?.available_start_date ?? ""); const [endDate, setEndDate] = useState(status?.available_end_date ?? ""); const [chunkDays, setChunkDays] = useState(String(status?.default_chunk_days ?? 7)); useEffect(() => { if (!status) return; setStartDate((current) => current || status.available_start_date || ""); setEndDate((current) => current || status.available_end_date || ""); setChunkDays((current) => current || String(status.default_chunk_days || 7)); }, [status]); return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{language === "en" ? "Import controls" : "Sterowanie importem"}</h3></div><div className="card-body d-flex flex-column gap-3"><div><label className="form-label">{t(language, "startDate")}</label><input className="form-control" type="date" value={startDate} onChange={(event) => setStartDate(event.target.value)} /></div><div><label className="form-label">{t(language, "endDate")}</label><input className="form-control" type="date" value={endDate} onChange={(event) => setEndDate(event.target.value)} /></div><div><label className="form-label">{t(language, "chunkDays")}</label><input className="form-control" type="number" min={1} max={31} value={chunkDays} onChange={(event) => setChunkDays(event.target.value)} /></div><div className="d-grid gap-2"><button className="btn btn-primary" onClick={() => onStart({ start_date: startDate || undefined, end_date: endDate || undefined, chunk_days: Number(chunkDays) || undefined, force: true })}><IconPlayerPlay size={18} className="me-1" />{t(language, "startImport")}</button><button className="btn btn-outline-secondary" onClick={onSyncNow}><IconRefresh size={18} className="me-1" />{t(language, "syncMissing")}</button><button className="btn btn-outline-danger" onClick={onCancel} disabled={!status?.running}><IconX size={18} className="me-1" />{t(language, "cancel")}</button></div></div></div>; }
-function KioskLayoutPanel({ language, widgets, onChange, labels }: { language: Language; widgets: WidgetId[]; onChange: (value: WidgetId[]) => void; labels: Map<WidgetId, string>; }) { const available = widgetOrder.map((item) => item.id); const selected = widgets; const unselected = available.filter((item) => !selected.includes(item)); const move = (id: WidgetId, direction: -1 | 1) => { const index = selected.indexOf(id); if (index === -1) return; const target = index + direction; if (target < 0 || target >= selected.length) return; const next = [...selected]; [next[index], next[target]] = [next[target], next[index]]; onChange(next); }; const toggle = (id: WidgetId) => { if (selected.includes(id)) { const next = selected.filter((item) => item !== id); onChange(next.length ? next : selected); return; } onChange([...selected, id]); }; return <div className="card pv-card h-100"><div className="card-header"><div><h3 className="card-title">{t(language, "kioskLayout")}</h3><div className="text-secondary small">{t(language, "kioskLayoutSubtitle")}</div></div></div><div className="card-body"><div className="alert alert-info py-2">{t(language, "saveLayout")}</div><div className="row g-3"><div className="col-12 col-lg-7"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">{t(language, "selected")}</div><div className="d-flex flex-column gap-2">{selected.map((id) => <div key={id} className="d-flex align-items-center justify-content-between gap-2 border rounded-3 px-3 py-2 bg-body-tertiary"><span>{labels.get(id)}</span><div className="btn-list"><button className="btn btn-sm btn-outline-secondary" onClick={() => move(id, -1)}>{t(language, "moveUp")}</button><button className="btn btn-sm btn-outline-secondary" onClick={() => move(id, 1)}>{t(language, "moveDown")}</button><button className="btn btn-sm btn-outline-danger" onClick={() => toggle(id)}><IconX size={16} /></button></div></div>)}</div></div></div><div className="col-12 col-lg-5"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">{t(language, "available")}</div><div className="d-flex flex-wrap gap-2">{unselected.map((id) => <button key={id} className="btn btn-outline-primary" onClick={() => toggle(id)}>{labels.get(id)}</button>)}</div></div></div></div></div></div>; }
-function KioskSettingsEditorPanel({ language, value, onChange, onSave, selectedMode, onModeChange, labels, buckets, compareModes, saving }: { language: Language; value: KioskSettingsPayload; onChange: (value: KioskSettingsPayload) => void; onSave: () => void; selectedMode: "public" | "private"; onModeChange: (value: "public" | "private") => void; labels: Map<WidgetId, string>; buckets: Array<{ key: string; label: string }>; compareModes: string[]; saving: boolean; }) { const widgets = toWidgetIds(value.widgets); return <div className="d-flex flex-column gap-3"><div className="card pv-card"><div className="card-header"><h3 className="card-title">{language === "en" ? "Kiosk settings" : "Ustawienia kiosku"}</h3></div><div className="card-body d-flex flex-column gap-3"><div className="btn-group w-100"><button className={`btn ${selectedMode === "private" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => onModeChange("private")}>{language === "en" ? "Logged-in kiosk" : "Kiosk prywatny"}</button><button className={`btn ${selectedMode === "public" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => onModeChange("public")}>{language === "en" ? "Public kiosk" : "Kiosk publiczny"}</button></div><div className="row g-3"><div className="col-12 col-md-6"><label className="form-label small mb-1">{language === "en" ? "Live chart range" : "Zakres wykresu live"}</label><select className="form-select" value={value.realtime_range} onChange={(e) => onChange({ ...value, realtime_range: e.target.value })}>{liveRangeOptions(language).map((item) => <option key={item.key} value={item.key}>{item.label}</option>)}</select></div><div className="col-12 col-md-6"><label className="form-label small mb-1">{language === "en" ? "Analytics range" : "Zakres analityki"}</label><select className="form-select" value={value.analytics_range} onChange={(e) => onChange({ ...value, analytics_range: e.target.value })}>{analyticsRangeOptions(language).map((item) => <option key={item.key} value={item.key}>{item.label}</option>)}</select></div><div className="col-12 col-md-6"><label className="form-label small mb-1">Bucket</label><select className="form-select" value={value.analytics_bucket} onChange={(e) => onChange({ ...value, analytics_bucket: e.target.value })}>{buckets.map((item) => <option key={item.key} value={item.key}>{item.label}</option>)}</select></div><div className="col-12 col-md-6"><label className="form-label small mb-1">{language === "en" ? "Comparison" : "Porównanie"}</label><select className="form-select" value={value.compare_mode} onChange={(e) => onChange({ ...value, compare_mode: e.target.value })}><option value="none">{translateCompareMode(language, "none")}</option>{compareModes.filter((item) => item !== "none").map((item) => <option key={item} value={item}>{translateCompareMode(language, item)}</option>)}</select></div></div><div className="d-flex justify-content-end"><button className="btn btn-primary" onClick={onSave} disabled={saving}>{saving ? (language === "en" ? "Saving..." : "Zapisywanie...") : (language === "en" ? "Save kiosk settings" : "Zapisz ustawienia kiosku")}</button></div></div></div><KioskLayoutPanel language={language} widgets={widgets} onChange={(widgetsValue) => onChange({ ...value, widgets: widgetsValue })} labels={labels} /></div>; }
-function KioskLinkPanel({ language, kioskUrl, settings }: { language: Language; kioskUrl: string; settings: KioskSettingsPayload }) { const [copied, setCopied] = useState(false); return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{language === "en" ? "Public kiosk link" : "Publiczny link kiosku"}</h3></div><div className="card-body d-flex flex-column gap-3"><div className="text-secondary small">{language === "en" ? "This link opens kiosk mode without login for read-only public display." : "Ten link otwiera kiosk bez logowania, tylko do publicznego podglądu."}</div><input className="form-control" value={kioskUrl} readOnly /><div className="small text-secondary">{language === "en" ? "Current public ranges:" : "Aktualne zakresy publiczne:"} live {settings.realtime_range}, analytics {settings.analytics_range}</div><button className="btn btn-primary" onClick={async () => { await navigator.clipboard.writeText(kioskUrl); setCopied(true); window.setTimeout(() => setCopied(false), 1500); }}>{copied ? (language === "en" ? "Copied" : "Skopiowano") : (language === "en" ? "Copy link" : "Kopiuj link")}</button></div></div>; }
-function AppearanceSecurityPanel({ language, theme, setTheme, viewMode, setViewMode, authEnabled, userName }: { language: Language; theme: ThemeMode; setTheme: (value: ThemeMode) => void; viewMode: ViewMode; setViewMode: (value: ViewMode) => void; authEnabled: boolean; userName: string; }) { return <div className="d-flex flex-column gap-3"><div className="card pv-card"><div className="card-header"><h3 className="card-title">{t(language, "theme")}</h3></div><div className="card-body d-flex flex-column gap-3"><div className="btn-group w-100"><button className={`btn ${theme === "light" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => setTheme("light")}>{t(language, "light")}</button><button className={`btn ${theme === "dark" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => setTheme("dark")}>{t(language, "dark")}</button></div></div></div><div className="card pv-card"><div className="card-header"><h3 className="card-title">{t(language, "viewMode")}</h3></div><div className="card-body d-flex flex-column gap-3"><div className="btn-group w-100"><button className={`btn ${viewMode === "normal" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => setViewMode("normal")}>{t(language, "normalMode")}</button><button className={`btn ${viewMode === "kiosk" ? "btn-primary" : "btn-outline-secondary"}`} onClick={() => setViewMode("kiosk")}>{t(language, "kioskMode")}</button></div></div></div><div className="card pv-card"><div className="card-header"><h3 className="card-title">{t(language, "security")}</h3></div><div className="card-body d-flex flex-column gap-2"><div className="d-flex align-items-center gap-2 fw-medium"><IconLock size={18} /> {authEnabled ? t(language, "authEnabled") : t(language, "authDisabled")}</div><div className="text-secondary small">{language === "en" ? "Admin user management is available below." : "Zarządzanie użytkownikami admina jest dostępne niżej."}</div>{userName ? <div className="badge bg-primary-lt text-primary align-self-start">{userName}</div> : null}</div></div></div>; }
-function MetricSelectorCard({ language, title, items, selected, onChange }: { language: Language; title: string; items: Array<{ metric_id: string; label: string; unit: string }>; selected: string[]; onChange: (value: string[]) => void; }) { const toggle = (metricId: string) => onChange(selected.includes(metricId) ? selected.filter((item) => item !== metricId) : [...selected, metricId]); return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{title}</h3></div><div className="card-body d-flex flex-column gap-2">{items.map((item) => <label key={item.metric_id} className="form-check"><input className="form-check-input" type="checkbox" checked={selected.includes(item.metric_id)} onChange={() => toggle(item.metric_id)} /><span className="form-check-label">{item.label} <span className="text-secondary small">{item.unit}</span></span></label>)}</div></div>; }
-function LiveChartMetricsPanel({ language, items, selected, onChange }: { language: Language; items: Array<{ metric_id: string; label: string; unit: string }>; selected: string[]; onChange: (value: string[]) => void; }) { return <MetricSelectorCard language={language} title={language === "en" ? "Live chart metrics" : "Metryki wykresu live"} items={items} selected={selected} onChange={onChange} />; }
-function BlockVisibilityPanel({ language, items, config, onChange }: { language: Language; items: Array<{ metric_id: string; label: string; unit: string }>; config: Record<BlockTarget, string[]>; onChange: (value: Record<BlockTarget, string[]>) => void; }) { const toggle = (target: BlockTarget, metricId: string) => { const selected = config[target]; onChange({ ...config, [target]: selected.includes(metricId) ? selected.filter((item) => item !== metricId) : [...selected, metricId] }); }; return <div className="card pv-card h-100"><div className="card-header"><h3 className="card-title">{language === "en" ? "Metric visibility in blocks" : "Widoczność metryk w blokach"}</h3></div><div className="card-body"><div className="row g-3"><div className="col-12 col-xl-6"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">Hero metrics</div>{items.map((item) => <label key={`hero-${item.metric_id}`} className="form-check d-block mb-2"><input className="form-check-input" type="checkbox" checked={config.hero.includes(item.metric_id)} onChange={() => toggle("hero", item.metric_id)} /><span className="form-check-label">{item.label}</span></label>)}</div></div><div className="col-12 col-xl-6"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">Quick metrics</div>{items.map((item) => <label key={`quick-${item.metric_id}`} className="form-check d-block mb-2"><input className="form-check-input" type="checkbox" checked={config.quick.includes(item.metric_id)} onChange={() => toggle("quick", item.metric_id)} /><span className="form-check-label">{item.label}</span></label>)}</div></div></div></div></div>; }
-function AdminUsersPanel({ language, users, newUser, onNewUserChange, onCreate, passwordReset, onPasswordResetChange, onResetPassword }: { language: Language; users: AuthUsersPayload["items"]; newUser: { username: string; display_name: string; password: string; role: string }; onNewUserChange: (value: { username: string; display_name: string; password: string; role: string }) => void; onCreate: () => void; passwordReset: { username: string; password: string }; onPasswordResetChange: (value: { username: string; password: string }) => void; onResetPassword: () => void; }) { return <div className="card pv-card"><div className="card-header"><h3 className="card-title">{language === "en" ? "Admin user management" : "Zarządzanie użytkownikami"}</h3></div><div className="card-body"><div className="row g-3"><div className="col-12 col-xl-6"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">{language === "en" ? "Create user" : "Dodaj użytkownika"}</div><div className="row g-2"><div className="col-md-6"><input className="form-control" placeholder={language === "en" ? "Username" : "Login"} value={newUser.username} onChange={(e) => onNewUserChange({ ...newUser, username: e.target.value })} /></div><div className="col-md-6"><input className="form-control" placeholder={language === "en" ? "Display name" : "Nazwa"} value={newUser.display_name} onChange={(e) => onNewUserChange({ ...newUser, display_name: e.target.value })} /></div><div className="col-md-6"><input className="form-control" type="password" placeholder={language === "en" ? "Password" : "Hasło"} value={newUser.password} onChange={(e) => onNewUserChange({ ...newUser, password: e.target.value })} /></div><div className="col-md-6"><select className="form-select" value={newUser.role} onChange={(e) => onNewUserChange({ ...newUser, role: e.target.value })}><option value="user">user</option><option value="admin">admin</option></select></div><div className="col-12"><button className="btn btn-primary" onClick={onCreate}>{language === "en" ? "Create user" : "Dodaj użytkownika"}</button></div></div></div></div><div className="col-12 col-xl-6"><div className="border rounded-3 p-3 h-100"><div className="fw-semibold mb-3">{language === "en" ? "Reset password" : "Zmiana hasła"}</div><div className="row g-2"><div className="col-md-6"><select className="form-select" value={passwordReset.username} onChange={(e) => onPasswordResetChange({ ...passwordReset, username: e.target.value })}><option value="">{language === "en" ? "Select user" : "Wybierz użytkownika"}</option>{users.map((user) => <option key={user.username} value={user.username}>{user.username}</option>)}</select></div><div className="col-md-6"><input className="form-control" type="password" placeholder={language === "en" ? "New password" : "Nowe hasło"} value={passwordReset.password} onChange={(e) => onPasswordResetChange({ ...passwordReset, password: e.target.value })} /></div><div className="col-12"><button className="btn btn-outline-primary" onClick={onResetPassword}>{language === "en" ? "Reset password" : "Zmień hasło"}</button></div></div></div></div><div className="col-12"><div className="table-responsive"><table className="table table-vcenter card-table"><thead><tr><th>{language === "en" ? "Username" : "Login"}</th><th>{language === "en" ? "Display name" : "Nazwa"}</th><th>Role</th><th>{language === "en" ? "Updated" : "Aktualizacja"}</th></tr></thead><tbody>{users.map((user) => <tr key={user.username}><td>{user.username}</td><td>{user.display_name}</td><td><span className="badge bg-primary-lt text-primary">{user.role}</span></td><td>{formatDateTime(user.updated_at, language === "en" ? "en-GB" : "pl-PL")}</td></tr>)}</tbody></table></div></div></div></div></div>; }

frontend/src/api/client.ts

@@ -179,6 +179,8 @@ export const api = {
     DEMO_MODE ? demoResponse(() => payload) : request("/auth/users", { method: "POST", body: JSON.stringify(payload) }),
   resetUserPassword: (username: string, password: string) =>
     DEMO_MODE ? demoResponse(() => ({ username })) : request(`/auth/users/${encodeURIComponent(username)}/reset-password`, { method: "POST", body: JSON.stringify({ password }) }),
+  updateUserRole: (username: string, role: string) =>
+    DEMO_MODE ? demoResponse(() => ({ username, role })) : request(`/auth/users/${encodeURIComponent(username)}/role`, { method: "PUT", body: JSON.stringify({ role }) }),
 };
 
 export const wsBaseUrl = (): string => {

frontend/src/components/analytics/ComparisonChart.tsx

@@ -2,15 +2,17 @@ import type { EChartsOption } from "echarts";
 import { Card } from "../common/Card";
 import { EChart } from "../common/EChart";
 import type { BucketPoint } from "../../types";
+import { t, type Language } from "../../i18n";
 
 interface ComparisonChartProps {
   current: BucketPoint[];
   comparison: BucketPoint[];
   unit: string;
   compareMode: string;
+  language?: Language;
 }
 
-export function ComparisonChart({ current, comparison, unit, compareMode }: ComparisonChartProps) {
+export function ComparisonChart({ current, comparison, unit, compareMode, language = "en" }: ComparisonChartProps) {
   const option: EChartsOption = {
     tooltip: {
       trigger: "axis",
@@ -43,14 +45,14 @@ export function ComparisonChart({ current, comparison, unit, compareMode }: Comp
     },
     series: [
       {
-        name: "Aktualny okres",
+        name: t(language, "currentPeriod"),
         type: "bar",
         barGap: "20%",
         itemStyle: { color: "#60a5fa", borderRadius: [10, 10, 0, 0] },
         data: current.map((item) => item.value),
       },
       {
-        name: compareMode === "previous_year" ? "Poprzedni rok" : "Poprzedni okres",
+        name: compareMode === "previous_year" ? t(language, "comparePreviousYear") : t(language, "comparePreviousPeriod"),
         type: "bar",
         itemStyle: { color: "#f59e0b", borderRadius: [10, 10, 0, 0] },
         data: current.map((_, index) => comparison[index]?.value ?? 0),
@@ -59,7 +61,7 @@ export function ComparisonChart({ current, comparison, unit, compareMode }: Comp
   };
 
   return (
-    <Card title="Porownanie okresow" subtitle="Wspolne slupki dla aktualnego i porownawczego okresu">
+    <Card title={t(language, "chartComparison")} subtitle={t(language, "chartComparisonSubtitle")}>
       <EChart option={option} className="h-[340px] w-full" />
     </Card>
   );

frontend/src/components/analytics/PeriodControls.tsx

@@ -1,4 +1,5 @@
 import { Card } from "../common/Card";
+import { t, type Language } from "../../i18n";
 
 interface PeriodControlsProps {
   rangeKey: string;
@@ -10,6 +11,7 @@ interface PeriodControlsProps {
   onRangeChange: (value: string) => void;
   onBucketChange: (value: string) => void;
   onCompareChange: (value: string) => void;
+  language?: Language;
 }
 
 export function PeriodControls({
@@ -22,12 +24,13 @@ export function PeriodControls({
   onRangeChange,
   onBucketChange,
   onCompareChange,
+  language = "en",
 }: PeriodControlsProps) {
   return (
-    <Card title="Porownanie okresow" subtitle="Dzien / tydzien / miesiac + poprzedni okres lub poprzedni rok">
+    <Card title={t(language, "chartComparison")} subtitle={t(language, "chartComparisonControlSubtitle")}>
       <div className="grid gap-4 lg:grid-cols-3">
         <label className="space-y-2">
-          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">Zakres</span>
+          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">{t(language, "range")}</span>
           <select
             value={rangeKey}
             onChange={(event) => onRangeChange(event.target.value)}
@@ -42,7 +45,7 @@ export function PeriodControls({
         </label>
 
         <label className="space-y-2">
-          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">Bucket</span>
+          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">{t(language, "bucket")}</span>
           <select
             value={bucket}
             onChange={(event) => onBucketChange(event.target.value)}
@@ -57,7 +60,7 @@ export function PeriodControls({
         </label>
 
         <label className="space-y-2">
-          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">Porownanie</span>
+          <span className="text-xs uppercase tracking-[0.18em] text-slate-500">{t(language, "comparisonPeriod")}</span>
           <select
             value={compare}
             onChange={(event) => onCompareChange(event.target.value)}

frontend/src/components/common/EChart.tsx

@@ -9,23 +9,43 @@ interface EChartProps {
 
 export function EChart({ option, className = "h-80 w-full" }: EChartProps) {
   const ref = useRef<HTMLDivElement | null>(null);
+  const chartRef = useRef<echarts.EChartsType | null>(null);
 
   useEffect(() => {
-    if (!ref.current) {
+    if (!ref.current || chartRef.current) {
       return;
     }
 
-    const chart = echarts.init(ref.current);
-    chart.setOption(option);
+    chartRef.current = echarts.init(ref.current);
 
-    const observer = new ResizeObserver(() => chart.resize());
+    return () => {
+      chartRef.current?.dispose();
+      chartRef.current = null;
+    };
+  }, []);
+
+  useEffect(() => {
+    if (!chartRef.current) {
+      return;
+    }
+
+    chartRef.current.clear();
+    chartRef.current.setOption(option, { notMerge: true, lazyUpdate: false });
+    chartRef.current.resize();
+  }, [option]);
+
+  useEffect(() => {
+    if (!ref.current || !chartRef.current) {
+      return;
+    }
+
+    const observer = new ResizeObserver(() => chartRef.current?.resize());
     observer.observe(ref.current);
 
     return () => {
       observer.disconnect();
-      chart.dispose();
     };
-  }, [option]);
+  }, []);
 
   return <div ref={ref} className={className} />;
 }

frontend/src/components/common/EChart.tsx.bak2

@@ -0,0 +1,49 @@
+import { useEffect, useRef } from "react";
+import * as echarts from "echarts";
+import type { EChartsOption } from "echarts";
+
+interface EChartProps {
+  option: EChartsOption;
+  className?: string;
+}
+
+export function EChart({ option, className = "h-80 w-full" }: EChartProps) {
+  const ref = useRef<HTMLDivElement | null>(null);
+  const chartRef = useRef<echarts.EChartsType | null>(null);
+
+  useEffect(() => {
+    if (!ref.current || chartRef.current) {
+      return;
+    }
+
+    chartRef.current = echarts.init(ref.current);
+
+    return () => {
+      chartRef.current?.dispose();
+      chartRef.current = null;
+    };
+  }, []);
+
+  useEffect(() => {
+    if (!chartRef.current) {
+      return;
+    }
+
+    chartRef.current.setOption(option, { notMerge: false, lazyUpdate: true });
+  }, [option]);
+
+  useEffect(() => {
+    if (!ref.current || !chartRef.current) {
+      return;
+    }
+
+    const observer = new ResizeObserver(() => chartRef.current?.resize());
+    observer.observe(ref.current);
+
+    return () => {
+      observer.disconnect();
+    };
+  }, []);
+
+  return <div ref={ref} className={className} />;
+}

frontend/src/components/common/Icons.tsx

@@ -76,6 +76,9 @@ export function IconSun(props: IconProps) {
 export function IconTemperature(props: IconProps) {
   return <BaseIcon {...props}><path d="M14 14.76V5a2 2 0 0 0-4 0v9.76a4 4 0 1 0 4 0z" /></BaseIcon>;
 }
+export function IconUser(props: IconProps) {
+  return <BaseIcon {...props}><path d="M20 21a8 8 0 0 0-16 0" /><circle cx="12" cy="8" r="4" /></BaseIcon>;
+}
 export function IconX(props: IconProps) {
   return <BaseIcon {...props}><path d="M18 6L6 18" /><path d="M6 6l12 12" /></BaseIcon>;
 }

frontend/src/components/realtime/LiveHistoryChart.tsx

@@ -2,13 +2,15 @@ import type { EChartsOption } from "echarts";
 import { Card } from "../common/Card";
 import { EChart } from "../common/EChart";
 import type { HistoryPayload } from "../../types";
+import type { Language } from "../../i18n";
 
 interface LiveHistoryChartProps {
   history?: HistoryPayload;
   title?: string;
+  language?: Language;
 }
 
-export function LiveHistoryChart({ history, title = "Dane chwilowe" }: LiveHistoryChartProps) {
+export function LiveHistoryChart({ history, title = "Live data", language = "en" }: LiveHistoryChartProps) {
   const option: EChartsOption = {
     tooltip: {
       trigger: "axis",
@@ -33,7 +35,7 @@ export function LiveHistoryChart({ history, title = "Dane chwilowe" }: LiveHisto
       axisLabel: { color: "#94a3b8" },
       axisLine: { lineStyle: { color: "rgba(255,255,255,0.08)" } },
       data: history?.series[0]?.points.map((point) =>
-        new Date(point.timestamp).toLocaleTimeString("pl-PL", { hour: "2-digit", minute: "2-digit" })
+        new Date(point.timestamp).toLocaleTimeString(language === "en" ? "en-GB" : "pl-PL", { hour: "2-digit", minute: "2-digit" })
       ) ?? [],
     },
     yAxis: {
@@ -56,7 +58,7 @@ export function LiveHistoryChart({ history, title = "Dane chwilowe" }: LiveHisto
   return (
     <Card
       title={title}
-      subtitle="Moc AC, moce stringow DC i opcjonalnie temperatura falownika w jednym widoku live"
+      subtitle={language === "en" ? "AC power, DC string power and optional inverter temperature in one live view" : "Moc AC, moce stringów DC i opcjonalnie temperatura falownika w jednym widoku live"}
     >
       <EChart option={option} className="h-[340px] w-full" />
     </Card>

frontend/src/components/realtime/PhaseGrid.tsx

@@ -1,14 +1,16 @@
 import { Card } from "../common/Card";
 import { ValuePair } from "../common/ValuePair";
 import type { SnapshotGroupRow } from "../../types";
+import type { Language } from "../../i18n";
 
 interface PhaseGridProps {
   rows: SnapshotGroupRow[];
+  language?: Language;
 }
 
-export function PhaseGrid({ rows }: PhaseGridProps) {
+export function PhaseGrid({ rows, language = "en" }: PhaseGridProps) {
   return (
-    <Card title="Fazy AC" subtitle="Napiece, prady i moce pozorne na falowniku">
+    <Card title={language === "en" ? "AC phases" : "Fazy AC"} subtitle={language === "en" ? "Voltage, current and apparent power on the inverter" : "Napięcie, prądy i moce pozorne na falowniku"}>
       <div className="grid gap-4 md:grid-cols-3">
         {rows.map((row) => (
           <div key={row.id} className="rounded-3xl border border-white/10 bg-slate-950/40 p-4">

frontend/src/components/realtime/StringGrid.tsx

@@ -1,16 +1,18 @@
 import { Card } from "../common/Card";
 import { ValuePair } from "../common/ValuePair";
 import type { SnapshotGroupRow } from "../../types";
+import type { Language } from "../../i18n";
 
 interface StringGridProps {
   rows: SnapshotGroupRow[];
+  language?: Language;
 }
 
 const slotOrder = ["power", "voltage"] as const;
 
-export function StringGrid({ rows }: StringGridProps) {
+export function StringGrid({ rows, language = "en" }: StringGridProps) {
   return (
-    <Card title="Stringi DC" subtitle="Widok automatycznie skaluje sie do liczby stringow i dostepnych metryk z config.py">
+    <Card title={language === "en" ? "DC strings" : "Stringi DC"} subtitle={language === "en" ? "The layout automatically scales to the number of strings and available metrics from config.py" : "Widok automatycznie skaluje się do liczby stringów i dostępnych metryk z config.py"}>
       <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-3">
         {rows.map((row) => {
           const visibleSlots = slotOrder.filter((slot) => row.values[slot]);

frontend/src/components/settings/ConfigPanel.tsx

@@ -9,24 +9,24 @@ interface ConfigPanelProps {
 export function ConfigPanel({ config }: ConfigPanelProps) {
   return (
     <div className="grid gap-6 xl:grid-cols-[1.1fr_1fr]">
-      <Card title="Architektura i UX" subtitle="Co zostalo przygotowane w tej wersji">
+      <Card title="Architecture and UX" subtitle="What is prepared in this version">
         <div className="grid gap-4 text-sm text-slate-300">
           <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4">
             <div className="font-medium text-white">Backend</div>
-            <p className="mt-2">Flask + modularne serwisy, bez uvicorna i bez pydantic-core. Odczyt z InfluxDB idzie po HTTP API, a agregaty historyczne trafiaja do lokalnego cache SQLite.</p>
+            <p className="mt-2">Flask with modular services, without uvicorn and without pydantic-core. InfluxDB reads go through the HTTP API, while historical aggregates are stored in the local SQLite cache.</p>
           </div>
           <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4">
             <div className="font-medium text-white">Frontend</div>
-            <p className="mt-2">React + TypeScript + Vite + Tailwind, responsywne karty, live charts i widok mobilny bez osobnej wersji aplikacji.</p>
+            <p className="mt-2">React + TypeScript + Vite + Tailwind, responsive cards, live charts and mobile view without a separate app version.</p>
           </div>
           <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4">
-            <div className="font-medium text-white">Logika danych</div>
-            <p className="mt-2">Produkcja dzienna, tygodniowa, miesieczna i roczna jest liczona z surowych danych Influxa na podstawie licznika energii calkowitej, a gdy go brak — z mocy AC. Pelne dni sa cache'owane lokalnie.</p>
+            <div className="font-medium text-white">Data logic</div>
+            <p className="mt-2">Daily, weekly, monthly and yearly production is calculated from raw Influx data using the total energy counter, and when it is missing, from AC power. Full days are cached locally.</p>
           </div>
         </div>
       </Card>
 
-      <Card title="Konfiguracja deploymentu" subtitle="Najwazniejsze ustawienia od razu widoczne">
+      <Card title="Deployment configuration" subtitle="Most important settings visible at a glance">
         <dl className="grid gap-4 text-sm">
           <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4">
             <dt className="text-slate-500">Site name</dt>
@@ -41,7 +41,7 @@ export function ConfigPanel({ config }: ConfigPanelProps) {
             <dd className="mt-2 text-white">{config.app.timezone}</dd>
           </div>
           <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4">
-            <dt className="text-slate-500">Moduly live / analytics / history</dt>
+            <dt className="text-slate-500">Live / analytics / history modules</dt>
             <dd className="mt-2 text-white">
               live: {String(config.capabilities.realtime_enabled)} / analytics: {String(config.capabilities.analytics_enabled)} / history: {String(config.capabilities.historical_import_enabled)}
             </dd>
@@ -51,7 +51,7 @@ export function ConfigPanel({ config }: ConfigPanelProps) {
 
       {config.capabilities.historical_import_enabled ? <HistoricalImportPanel config={config} /> : null}
 
-      <Card title="Mapowanie encji" subtitle="Tabela pomocnicza do dalszego doprecyzowania integracji" className="xl:col-span-2">
+      <Card title="Entity mapping" subtitle="Helper table for further integration tuning" className="xl:col-span-2">
         <div className="overflow-auto">
           <table className="min-w-full text-left text-sm text-slate-300">
             <thead>

frontend/src/components/settings/HistoricalImportPanel.tsx

@@ -7,27 +7,77 @@ import { formatDate, formatDateTime, formatDurationShort, formatPercent, formatV
 
 interface HistoricalImportPanelProps { config: DashboardConfig; }
 
-function eventTone(level?: string): "ok" | "warn" | "critical" | "neutral" { if (level === "success") return "ok"; if (level === "warn") return "warn"; if (level === "error") return "critical"; return "neutral"; }
-function chunkTone(state?: string): "ok" | "warn" | "critical" | "neutral" { if (state === "completed") return "ok"; if (state === "running") return "warn"; if (state === "failed") return "critical"; return "neutral"; }
+function eventTone(level?: string): "ok" | "warn" | "critical" | "neutral" {
+  if (level === "success") return "ok";
+  if (level === "warn") return "warn";
+  if (level === "error") return "critical";
+  return "neutral";
+}
+
+function chunkTone(state?: string): "ok" | "warn" | "critical" | "neutral" {
+  if (state === "completed") return "ok";
+  if (state === "running") return "warn";
+  if (state === "failed") return "critical";
+  return "neutral";
+}
 
 function StatCard({ label, value, helper }: { label: string; value: string; helper: string }) {
-  return <div className="rounded-2xl border border-white/10 bg-slate-950/35 p-4"><div className="text-xs uppercase tracking-[0.2em] text-slate-500">{label}</div><div className="mt-3 text-2xl font-semibold text-white">{value}</div><div className="mt-2 text-xs text-slate-500">{helper}</div></div>;
+  return (
+    <div className="rounded-2xl border border-white/10 bg-slate-950/35 p-4">
+      <div className="text-xs uppercase tracking-[0.2em] text-slate-500">{label}</div>
+      <div className="mt-3 text-2xl font-semibold text-white">{value}</div>
+      <div className="mt-2 text-xs text-slate-500">{helper}</div>
+    </div>
+  );
 }
 
 function ChunkRow({ chunk, activeChunkIndex }: { chunk: HistoricalChunkProgress; activeChunkIndex: number }) {
   const isActive = chunk.chunk_index === activeChunkIndex || chunk.state === "running";
   return (
     <div className="rounded-2xl border border-white/10 bg-slate-950/35 p-4">
-      <div className="flex flex-wrap items-center justify-between gap-3"><div><div className="text-sm font-medium text-white">Chunk {chunk.chunk_index}/{chunk.total_chunks}</div><div className="mt-1 text-xs text-slate-500">{formatDate(chunk.start_date)} - {formatDate(chunk.end_date)}</div></div><div className="flex items-center gap-2">{isActive ? <Badge tone="warn">aktywny</Badge> : null}<Badge tone={chunkTone(chunk.state)}>{chunk.state}</Badge></div></div>
-      <div className="mt-4 grid gap-3 text-sm sm:grid-cols-4"><div><div className="text-slate-500">Przetworzone</div><div className="mt-1 text-white">{chunk.processed_days}</div></div><div><div className="text-slate-500">Import</div><div className="mt-1 text-white">{chunk.imported_days}</div></div><div><div className="text-slate-500">Pominiete</div><div className="mt-1 text-white">{chunk.skipped_days}</div></div><div><div className="text-slate-500">Energia</div><div className="mt-1 text-white">{formatValue(chunk.energy_kwh, "kWh", 2)}</div></div></div>
-      <div className="mt-3 flex flex-wrap items-center justify-between gap-3 text-xs text-slate-500"><span>{chunk.note}</span><span>{chunk.duration_seconds ? `czas ${formatDurationShort(chunk.duration_seconds)}` : "w toku"}</span></div>
+      <div className="flex flex-wrap items-center justify-between gap-3">
+        <div>
+          <div className="text-sm font-medium text-white">Chunk {chunk.chunk_index}/{chunk.total_chunks}</div>
+          <div className="mt-1 text-xs text-slate-500">{formatDate(chunk.start_date)} - {formatDate(chunk.end_date)}</div>
+        </div>
+        <div className="flex items-center gap-2">
+          {isActive ? <Badge tone="warn">active</Badge> : null}
+          <Badge tone={chunkTone(chunk.state)}>{chunk.state}</Badge>
+        </div>
+      </div>
+      <div className="mt-4 grid gap-3 text-sm sm:grid-cols-4">
+        <div><div className="text-slate-500">Processed</div><div className="mt-1 text-white">{chunk.processed_days}</div></div>
+        <div><div className="text-slate-500">Imported</div><div className="mt-1 text-white">{chunk.imported_days}</div></div>
+        <div><div className="text-slate-500">Skipped</div><div className="mt-1 text-white">{chunk.skipped_days}</div></div>
+        <div><div className="text-slate-500">Energy</div><div className="mt-1 text-white">{formatValue(chunk.energy_kwh, "kWh", 2)}</div></div>
+      </div>
+      <div className="mt-3 flex flex-wrap items-center justify-between gap-3 text-xs text-slate-500">
+        <span>{chunk.note}</span>
+        <span>{chunk.duration_seconds ? `time ${formatDurationShort(chunk.duration_seconds)}` : "in progress"}</span>
+      </div>
     </div>
   );
 }
 
 function EventRow({ event }: { event: HistoricalActivityEvent }) {
   return (
-    <div className="relative pl-5"><div className="absolute left-0 top-2 h-2.5 w-2.5 rounded-full bg-white/30" /><div className="rounded-2xl border border-white/10 bg-slate-950/35 p-4"><div className="flex flex-wrap items-center justify-between gap-3"><div className="flex items-center gap-2"><Badge tone={eventTone(event.level)}>{event.level}</Badge><div className="text-sm font-medium text-white">{event.title}</div></div><div className="text-xs text-slate-500">{formatDateTime(event.timestamp)}</div></div><div className="mt-2 text-sm text-slate-300">{event.message}</div><div className="mt-3 flex flex-wrap gap-3 text-xs text-slate-500">{event.day ? <span>Dzien: {formatDate(event.day)}</span> : null}{event.chunk_index ? <span>Chunk: #{event.chunk_index}</span> : null}</div></div></div>
+    <div className="relative pl-5">
+      <div className="absolute left-0 top-2 h-2.5 w-2.5 rounded-full bg-white/30" />
+      <div className="rounded-2xl border border-white/10 bg-slate-950/35 p-4">
+        <div className="flex flex-wrap items-center justify-between gap-3">
+          <div className="flex items-center gap-2">
+            <Badge tone={eventTone(event.level)}>{event.level}</Badge>
+            <div className="text-sm font-medium text-white">{event.title}</div>
+          </div>
+          <div className="text-xs text-slate-500">{formatDateTime(event.timestamp)}</div>
+        </div>
+        <div className="mt-2 text-sm text-slate-300">{event.message}</div>
+        <div className="mt-3 flex flex-wrap gap-3 text-xs text-slate-500">
+          {event.day ? <span>Day: {formatDate(event.day)}</span> : null}
+          {event.chunk_index ? <span>Chunk: #{event.chunk_index}</span> : null}
+        </div>
+      </div>
+    </div>
   );
 }
 
@@ -39,9 +89,14 @@ export function HistoricalImportPanel({ config }: HistoricalImportPanelProps) {
   const [chunkDays, setChunkDays] = useState(String(config.capabilities.history.default_chunk_days || 7));
   const [force, setForce] = useState(false);
 
-  useEffect(() => { setChunkDays(String(config.capabilities.history.default_chunk_days || 7)); }, [config.capabilities.history.default_chunk_days]);
+  useEffect(() => {
+    setChunkDays(String(config.capabilities.history.default_chunk_days || 7));
+  }, [config.capabilities.history.default_chunk_days]);
 
-  const progress = useMemo(() => { if (!payload || payload.total_days <= 0) return 0; return Math.min(100, Math.round((payload.processed_days / payload.total_days) * 100)); }, [payload]);
+  const progress = useMemo(() => {
+    if (!payload || payload.total_days <= 0) return 0;
+    return Math.min(100, Math.round((payload.processed_days / payload.total_days) * 100));
+  }, [payload]);
   const visibleChunks = useMemo(() => [...(payload?.recent_chunks ?? [])].sort((l, r) => r.chunk_index - l.chunk_index), [payload?.recent_chunks]);
   const visibleEvents = useMemo(() => [...(payload?.recent_events ?? [])].sort((l, r) => new Date(r.timestamp).getTime() - new Date(l.timestamp).getTime()), [payload?.recent_events]);
 
@@ -50,25 +105,76 @@ export function HistoricalImportPanel({ config }: HistoricalImportPanelProps) {
   const availableRangeReady = Boolean(payload?.available_start_date && payload?.available_end_date);
 
   return (
-    <Card title="Import archiwalny z InfluxDB" subtitle="Mechanizm backfillu dzien po dniu z lokalnym cache SQLite, kontrola chunkow, ETA i lista ostatnich operacji" className="xl:col-span-2">
-      <div className="grid gap-6 2xl:grid-cols-[1.15fr_0.85fr]"><div className="space-y-6">
-        <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-4">
-          <StatCard label="Postep" value={`${progress}%`} helper={`${payload?.processed_days ?? 0} / ${payload?.total_days ?? 0} dni`} />
-          <StatCard label="Przepustowosc" value={formatValue(payload?.avg_days_per_minute ?? null, "dni/min", 1)} helper="Srednia szybkosc importu" />
-          <StatCard label="ETA" value={formatDurationShort(payload?.estimated_remaining_seconds)} helper="Szacowany czas do konca" />
-          <StatCard label="Pokrycie" value={formatPercent(payload?.coverage?.coverage_pct ?? null)} helper={`${payload?.coverage?.missing_days ?? 0} brakujacych dni`} />
+    <Card title="Historical import from InfluxDB" subtitle="Day-by-day backfill with local SQLite cache, chunk control, ETA and recent activity list" className="xl:col-span-2">
+      <div className="grid gap-6 2xl:grid-cols-[1.15fr_0.85fr]">
+        <div className="space-y-6">
+          <div className="grid gap-4 md:grid-cols-2 xl:grid-cols-4">
+            <StatCard label="Progress" value={`${progress}%`} helper={`${payload?.processed_days ?? 0} / ${payload?.total_days ?? 0} days`} />
+            <StatCard label="Throughput" value={formatValue(payload?.avg_days_per_minute ?? null, "days/min", 1)} helper="Average import speed" />
+            <StatCard label="ETA" value={formatDurationShort(payload?.estimated_remaining_seconds)} helper="Estimated time to completion" />
+            <StatCard label="Coverage" value={formatPercent(payload?.coverage?.coverage_pct ?? null)} helper={`${payload?.coverage?.missing_days ?? 0} missing days`} />
+          </div>
+          <div className="grid gap-4 lg:grid-cols-[0.9fr_1.1fr]">
+            <div className="space-y-4">
+              <div className="grid gap-4 md:grid-cols-2">
+                <label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300">
+                  <span className="mb-2 block text-slate-500">Start date</span>
+                  <input type="date" value={startDate} onChange={(e) => setStartDate(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" />
+                </label>
+                <label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300">
+                  <span className="mb-2 block text-slate-500">End date</span>
+                  <input type="date" value={endDate} onChange={(e) => setEndDate(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" />
+                </label>
+              </div>
+              <div className="grid gap-4 md:grid-cols-[220px_1fr]">
+                <label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300">
+                  <span className="mb-2 block text-slate-500">Chunk (days)</span>
+                  <input type="number" min={1} max={31} value={chunkDays} onChange={(e) => setChunkDays(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" />
+                </label>
+                <div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300">
+                  <label className="flex items-center gap-3">
+                    <input type="checkbox" checked={force} onChange={(e) => setForce(e.target.checked)} />
+                    <span>Overwrite days already present in the historical cache</span>
+                  </label>
+                  <p className="mt-3 text-slate-500">When date fields are empty, the backend automatically detects the import range based on the first InfluxDB sample and the last day already stored in SQLite.</p>
+                </div>
+              </div>
+              <div className="flex flex-wrap gap-3">
+                <button type="button" disabled={busy} onClick={() => start.mutate({ start_date: startDate || undefined, end_date: endDate || undefined, chunk_days: Number(chunkDays || 7), force })} className="rounded-full bg-white px-5 py-2.5 text-sm font-medium text-slate-950 transition hover:bg-slate-200 disabled:cursor-not-allowed disabled:opacity-50">Start import</button>
+                <button type="button" disabled={busy} onClick={() => syncNow.mutate()} className="rounded-full bg-emerald-500/20 px-5 py-2.5 text-sm font-medium text-emerald-200 transition hover:bg-emerald-500/30 disabled:cursor-not-allowed disabled:opacity-50">Sync missing days</button>
+                <button type="button" disabled={!payload?.running || busy} onClick={() => cancel.mutate()} className="rounded-full bg-rose-500/20 px-5 py-2.5 text-sm font-medium text-rose-200 transition hover:bg-rose-500/30 disabled:cursor-not-allowed disabled:opacity-50">Cancel</button>
+                {availableRangeReady ? <button type="button" disabled={busy} onClick={() => { setStartDate(payload?.available_start_date ?? ""); setEndDate(payload?.available_end_date ?? ""); }} className="rounded-full bg-sky-500/15 px-5 py-2.5 text-sm font-medium text-sky-200 transition hover:bg-sky-500/25 disabled:cursor-not-allowed disabled:opacity-50">Use full history</button> : null}
+              </div>
+              {mutationError ? <div className="rounded-2xl border border-rose-400/20 bg-rose-500/10 p-4 text-sm text-rose-200">{mutationError}</div> : null}
+              {status.error ? <div className="rounded-2xl border border-rose-400/20 bg-rose-500/10 p-4 text-sm text-rose-200">{status.error.message}</div> : null}
+            </div>
+            <div className="rounded-3xl border border-white/10 bg-slate-950/35 p-5">
+              <div className="flex flex-wrap items-start justify-between gap-3">
+                <div>
+                  <div className="text-sm font-medium text-white">Operational task status</div>
+                  <div className="mt-1 text-xs text-slate-500">{payload?.message || "No active task"}</div>
+                </div>
+                <div className="flex items-center gap-2">
+                  {payload?.job_id ? <Badge tone="neutral">job {payload.job_id}</Badge> : null}
+                  <Badge tone={payload?.running ? "warn" : payload?.state === "failed" ? "critical" : "neutral"}>{payload?.running ? "running" : payload?.state || "idle"}</Badge>
+                </div>
+              </div>
+              <div className="mt-5 h-3 overflow-hidden rounded-full bg-white/8"><div className="h-full rounded-full bg-gradient-to-r from-emerald-300 via-sky-400 to-cyan-400 transition-all" style={{ width: `${progress}%` }} /></div>
+              <div className="mt-2 flex items-center justify-between text-xs text-slate-500"><span>Chunk {payload?.active_chunk_index ?? 0} / {payload?.total_chunks ?? 0}</span><span>{progress}%</span></div>
+              <div className="mt-5 grid gap-4 text-sm text-slate-300 md:grid-cols-2">
+                <div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Available range in InfluxDB</div><div className="mt-2 text-white">{formatDate(payload?.available_start_date)} - {formatDate(payload?.available_end_date)}</div><div className="mt-2 text-xs text-slate-500">{payload?.coverage?.available_days ?? 0} detected archive days</div></div>
+                <div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Range stored locally</div><div className="mt-2 text-white">{formatDate(payload?.coverage?.first_day)} - {formatDate(payload?.coverage?.last_day)}</div><div className="mt-2 text-xs text-slate-500">{payload?.coverage?.imported_days ?? 0} days in cache, {formatValue(payload?.coverage?.total_energy_kwh ?? 0, "kWh", 1)}</div></div>
+                <div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Current chunk</div><div className="mt-2 text-white">{formatDate(payload?.current_chunk_start)} - {formatDate(payload?.current_chunk_end)}</div><div className="mt-2 text-xs text-slate-500">Last day: {formatDate(payload?.current_date)}</div></div>
+                <div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Timings and delays</div><div className="mt-2 text-white">elapsed {formatDurationShort(payload?.elapsed_seconds)}</div><div className="mt-2 text-xs text-slate-500">start {formatDateTime(payload?.started_at)} / finish {formatDateTime(payload?.finished_at)}</div>{payload?.last_error ? <div className="mt-3 text-xs text-rose-200">Error: {payload.last_error}</div> : null}</div>
+              </div>
+            </div>
+          </div>
+          <div className="grid gap-6 xl:grid-cols-[1.05fr_0.95fr]">
+            <Card title="Chunk list" subtitle="Latest ranges with imported days count and energy per chunk"><div className="space-y-3">{visibleChunks.length ? visibleChunks.map((chunk) => <ChunkRow key={chunk.chunk_index} chunk={chunk} activeChunkIndex={payload?.active_chunk_index ?? 0} />) : <div className="rounded-2xl border border-dashed border-white/10 bg-slate-950/20 p-6 text-sm text-slate-400">The chunk list will appear after the first backfill starts.</div>}</div></Card>
+            <Card title="Recent operations" subtitle="Recent days, chunks and warnings without opening backend logs"><div className="space-y-3 border-l border-white/10 pl-4">{visibleEvents.length ? visibleEvents.map((event, index) => <EventRow key={`${event.timestamp}-${index}`} event={event} />) : <div className="rounded-2xl border border-dashed border-white/10 bg-slate-950/20 p-6 text-sm text-slate-400">Operation history will appear after the task starts.</div>}</div></Card>
+          </div>
         </div>
-        <div className="grid gap-4 lg:grid-cols-[0.9fr_1.1fr]"><div className="space-y-4">
-          <div className="grid gap-4 md:grid-cols-2"><label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300"><span className="mb-2 block text-slate-500">Data od</span><input type="date" value={startDate} onChange={(e) => setStartDate(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" /></label><label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300"><span className="mb-2 block text-slate-500">Data do</span><input type="date" value={endDate} onChange={(e) => setEndDate(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" /></label></div>
-          <div className="grid gap-4 md:grid-cols-[220px_1fr]"><label className="block rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300"><span className="mb-2 block text-slate-500">Chunk (dni)</span><input type="number" min={1} max={31} value={chunkDays} onChange={(e) => setChunkDays(e.target.value)} className="w-full rounded-xl border border-white/10 bg-slate-950 px-3 py-2 text-white outline-none" /></label><div className="rounded-2xl border border-white/10 bg-slate-950/30 p-4 text-sm text-slate-300"><label className="flex items-center gap-3"><input type="checkbox" checked={force} onChange={(e) => setForce(e.target.checked)} /><span>Nadpisz dni juz obecne w cache historycznym</span></label><p className="mt-3 text-slate-500">Gdy pola dat sa puste, backend sam wykryje zakres do importu na podstawie pierwszej probki w InfluxDB i ostatniego dnia juz zapisanego w SQLite.</p></div></div>
-          <div className="flex flex-wrap gap-3"><button type="button" disabled={busy} onClick={() => start.mutate({ start_date: startDate || undefined, end_date: endDate || undefined, chunk_days: Number(chunkDays || 7), force })} className="rounded-full bg-white px-5 py-2.5 text-sm font-medium text-slate-950 transition hover:bg-slate-200 disabled:cursor-not-allowed disabled:opacity-50">Start importu</button><button type="button" disabled={busy} onClick={() => syncNow.mutate()} className="rounded-full bg-emerald-500/20 px-5 py-2.5 text-sm font-medium text-emerald-200 transition hover:bg-emerald-500/30 disabled:cursor-not-allowed disabled:opacity-50">Synchronizuj brakujace dni</button><button type="button" disabled={!payload?.running || busy} onClick={() => cancel.mutate()} className="rounded-full bg-rose-500/20 px-5 py-2.5 text-sm font-medium text-rose-200 transition hover:bg-rose-500/30 disabled:cursor-not-allowed disabled:opacity-50">Anuluj</button>{availableRangeReady ? <button type="button" disabled={busy} onClick={() => { setStartDate(payload?.available_start_date ?? ""); setEndDate(payload?.available_end_date ?? ""); }} className="rounded-full bg-sky-500/15 px-5 py-2.5 text-sm font-medium text-sky-200 transition hover:bg-sky-500/25 disabled:cursor-not-allowed disabled:opacity-50">Ustaw pelna historie</button> : null}</div>
-          {mutationError ? <div className="rounded-2xl border border-rose-400/20 bg-rose-500/10 p-4 text-sm text-rose-200">{mutationError}</div> : null}
-          {status.error ? <div className="rounded-2xl border border-rose-400/20 bg-rose-500/10 p-4 text-sm text-rose-200">{status.error.message}</div> : null}
-        </div>
-        <div className="rounded-3xl border border-white/10 bg-slate-950/35 p-5"><div className="flex flex-wrap items-start justify-between gap-3"><div><div className="text-sm font-medium text-white">Operacyjny status zadania</div><div className="mt-1 text-xs text-slate-500">{payload?.message || "Brak aktywnego zadania"}</div></div><div className="flex items-center gap-2">{payload?.job_id ? <Badge tone="neutral">job {payload.job_id}</Badge> : null}<Badge tone={payload?.running ? "warn" : payload?.state === "failed" ? "critical" : "neutral"}>{payload?.running ? "w trakcie" : payload?.state || "idle"}</Badge></div></div><div className="mt-5 h-3 overflow-hidden rounded-full bg-white/8"><div className="h-full rounded-full bg-gradient-to-r from-emerald-300 via-sky-400 to-cyan-400 transition-all" style={{ width: `${progress}%` }} /></div><div className="mt-2 flex items-center justify-between text-xs text-slate-500"><span>Chunk {payload?.active_chunk_index ?? 0} / {payload?.total_chunks ?? 0}</span><span>{progress}%</span></div>
-          <div className="mt-5 grid gap-4 text-sm text-slate-300 md:grid-cols-2"><div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Dostepny zakres w InfluxDB</div><div className="mt-2 text-white">{formatDate(payload?.available_start_date)} - {formatDate(payload?.available_end_date)}</div><div className="mt-2 text-xs text-slate-500">{payload?.coverage?.available_days ?? 0} dni wykrytego archiwum</div></div><div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Zakres zapisany lokalnie</div><div className="mt-2 text-white">{formatDate(payload?.coverage?.first_day)} - {formatDate(payload?.coverage?.last_day)}</div><div className="mt-2 text-xs text-slate-500">{payload?.coverage?.imported_days ?? 0} dni w cache, {formatValue(payload?.coverage?.total_energy_kwh ?? 0, "kWh", 1)}</div></div><div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Aktualny chunk</div><div className="mt-2 text-white">{formatDate(payload?.current_chunk_start)} - {formatDate(payload?.current_chunk_end)}</div><div className="mt-2 text-xs text-slate-500">Ostatni dzien: {formatDate(payload?.current_date)}</div></div><div className="rounded-2xl border border-white/10 bg-slate-900/70 p-4"><div className="text-slate-500">Czasy i opoznienia</div><div className="mt-2 text-white">elapsed {formatDurationShort(payload?.elapsed_seconds)}</div><div className="mt-2 text-xs text-slate-500">start {formatDateTime(payload?.started_at)} / koniec {formatDateTime(payload?.finished_at)}</div>{payload?.last_error ? <div className="mt-3 text-xs text-rose-200">Blad: {payload.last_error}</div> : null}</div></div></div></div>
-        <div className="grid gap-6 xl:grid-cols-[1.05fr_0.95fr]"><Card title="Lista chunkow" subtitle="Najswiezsze zakresy z liczba zaimportowanych dni i energia na chunk"><div className="space-y-3">{visibleChunks.length ? visibleChunks.map((chunk) => <ChunkRow key={chunk.chunk_index} chunk={chunk} activeChunkIndex={payload?.active_chunk_index ?? 0} />) : <div className="rounded-2xl border border-dashed border-white/10 bg-slate-950/20 p-6 text-sm text-slate-400">Lista chunkow pojawi sie po uruchomieniu pierwszego backfillu.</div>}</div></Card><Card title="Ostatnie operacje" subtitle="Operator widzi ostatnie dni, chunki i ewentualne ostrzezenia bez wchodzenia do logow backendu"><div className="space-y-3 border-l border-white/10 pl-4">{visibleEvents.length ? visibleEvents.map((event, index) => <EventRow key={`${event.timestamp}-${index}`} event={event} />) : <div className="rounded-2xl border border-dashed border-white/10 bg-slate-950/20 p-6 text-sm text-slate-400">Historia operacji pojawi sie po starcie zadania.</div>}</div></Card></div>
-      </div></div>
+      </div>
     </Card>
   );
 }

frontend/src/demo/data.ts

@@ -53,21 +53,21 @@ export const demoConfig: DashboardConfig = {
       { key: "ytd", label: "YTD" },
     ],
     buckets: [
-      { key: "day", label: "Dzien" },
-      { key: "week", label: "Tydzien" },
-      { key: "month", label: "Miesiac" },
+      { key: "day", label: "Dzień" },
+      { key: "week", label: "Tydzień" },
+      { key: "month", label: "Miesiąc" },
       { key: "year", label: "Rok" },
     ],
     historical_import_enabled: true,
     history: { enabled: true, default_chunk_days: 7, auto_sync_enabled: true, auto_sync_interval_minutes: 30 },
   },
   visible_entities: [
-    { metric_id: "ac_power", label: "Moc AC calkowita", entity_id: "sofarsolar_ac_power", measurement: "W", unit: "W", kind: "gauge" },
-    { metric_id: "energy_total", label: "Energia total", entity_id: "sofarsolar_energy_total", measurement: "kWh", unit: "kWh", kind: "counter" },
+    { metric_id: "ac_power", label: "Moc AC całkowita", entity_id: "sofarsolar_ac_power", measurement: "W", unit: "W", kind: "gauge" },
+    { metric_id: "energy_total", label: "Energia całkowita", entity_id: "sofarsolar_energy_total", measurement: "kWh", unit: "kWh", kind: "counter" },
     { metric_id: "string_1_power", label: "Moc stringu DC1", entity_id: "sofarsolar_dc1_power", measurement: "W", unit: "W", kind: "gauge" },
-    { metric_id: "string_1_voltage", label: "Napiecie stringu DC1", entity_id: "sofarsolar_dc1_voltage", measurement: "V", unit: "V", kind: "gauge" },
+    { metric_id: "string_1_voltage", label: "Napięcie stringu DC1", entity_id: "sofarsolar_dc1_voltage", measurement: "V", unit: "V", kind: "gauge" },
     { metric_id: "string_2_power", label: "Moc stringu DC2", entity_id: "sofarsolar_dc2_power", measurement: "W", unit: "W", kind: "gauge" },
-    { metric_id: "string_2_voltage", label: "Napiecie stringu DC2", entity_id: "sofarsolar_dc2_voltage", measurement: "V", unit: "V", kind: "gauge" },
+    { metric_id: "string_2_voltage", label: "Napięcie stringu DC2", entity_id: "sofarsolar_dc2_voltage", measurement: "V", unit: "V", kind: "gauge" },
     { metric_id: "inverter_temp", label: "Temperatura falownika", entity_id: "sofarsolar_temprature_inverter", measurement: "°C", unit: "°C", kind: "gauge" },
   ],
 };
@@ -82,20 +82,20 @@ export const demoSnapshot = (): SnapshotPayload => ({
     { metric_id: "inverter_temp", label: "Temp. falownika", value: 47.3, unit: "°C", accent: "rose", subtitle: "Live status termiczny" },
   ],
   kpis: {
-    energy_today: { metric_id: "energy_today", label: "Energia dzis", unit: "kWh", value: 31.8, precision: 2, kind: "counter", status: "ok" },
+    energy_today: { metric_id: "energy_today", label: "Energia dziś", unit: "kWh", value: 31.8, precision: 2, kind: "counter", status: "ok" },
     energy_yesterday: { metric_id: "energy_yesterday", label: "Energia wczoraj", unit: "kWh", value: 28.4, precision: 2, kind: "counter", status: "ok" },
-    today_vs_yesterday: { metric_id: "today_vs_yesterday", label: "Dzis vs wczoraj", unit: "%", value: 12, precision: 0, kind: "gauge", status: "ok" },
-    dc_power_total: { metric_id: "dc_power_total", label: "Moc DC total", unit: "W", value: 6760, precision: 0, kind: "gauge", status: "ok" },
-    energy_total: { metric_id: "energy_total", label: "Energia total", unit: "kWh", value: 18264.3, precision: 1, kind: "counter", status: "ok" },
+    today_vs_yesterday: { metric_id: "today_vs_yesterday", label: "Dziś vs wczoraj", unit: "%", value: 12, precision: 0, kind: "gauge", status: "ok" },
+    dc_power_total: { metric_id: "dc_power_total", label: "Moc DC łączna", unit: "W", value: 6760, precision: 0, kind: "gauge", status: "ok" },
+    energy_total: { metric_id: "energy_total", label: "Energia całkowita", unit: "kWh", value: 18264.3, precision: 1, kind: "counter", status: "ok" },
   },
   strings: [
-    { id: "dc1", label: "String 1 / Wschod", meta: {}, values: { power: { metric_id: "string_1_power", label: "Moc", unit: "W", value: 3450, precision: 0, kind: "gauge", status: "ok" }, voltage: { metric_id: "string_1_voltage", label: "Napiecie", unit: "V", value: 382, precision: 0, kind: "gauge", status: "ok" } } },
-    { id: "dc2", label: "String 2 / Zachod", meta: {}, values: { power: { metric_id: "string_2_power", label: "Moc", unit: "W", value: 3310, precision: 0, kind: "gauge", status: "ok" }, voltage: { metric_id: "string_2_voltage", label: "Napiecie", unit: "V", value: 375, precision: 0, kind: "gauge", status: "ok" } } },
+    { id: "dc1", label: "String 1 / Wschód", meta: {}, values: { power: { metric_id: "string_1_power", label: "Moc", unit: "W", value: 3450, precision: 0, kind: "gauge", status: "ok" }, voltage: { metric_id: "string_1_voltage", label: "Napięcie", unit: "V", value: 382, precision: 0, kind: "gauge", status: "ok" } } },
+    { id: "dc2", label: "String 2 / Zachód", meta: {}, values: { power: { metric_id: "string_2_power", label: "Moc", unit: "W", value: 3310, precision: 0, kind: "gauge", status: "ok" }, voltage: { metric_id: "string_2_voltage", label: "Napięcie", unit: "V", value: 375, precision: 0, kind: "gauge", status: "ok" } } },
   ],
   phases: [],
   status: [
     { metric_id: "inverter_temp", label: "Temperatura falownika", unit: "°C", value: 47.3, precision: 1, kind: "gauge", status: "ok" },
-    { metric_id: "data_freshness", label: "Swiezosc danych", unit: "", value: "3 s temu", precision: 0, kind: "text", status: "ok" },
+    { metric_id: "data_freshness", label: "Świeżość danych", unit: "", value: "3 s temu", precision: 0, kind: "text", status: "ok" },
   ],
   faults: [],
 });
@@ -110,8 +110,8 @@ export const demoHistory: HistoryPayload = {
   end: isoAt(0),
   series: [
     { metric_id: "ac_power", label: "Moc AC", unit: "W", points: historyPoints([0, 120, 860, 1840, 2760, 3920, 5180, 6020, 6840, 6500, 5710, 4980]) },
-    { metric_id: "string_1_power", label: "DC1", unit: "W", points: historyPoints([0, 80, 620, 1320, 2140, 2860, 3250, 3490, 3450, 3300, 2920, 2480]) },
-    { metric_id: "string_2_power", label: "DC2", unit: "W", points: historyPoints([0, 40, 240, 520, 880, 1260, 1930, 2530, 3310, 3200, 2790, 2410]) },
+    { metric_id: "string_1_power", label: "DC1 moc", unit: "W", points: historyPoints([0, 80, 620, 1320, 2140, 2860, 3250, 3490, 3450, 3300, 2920, 2480]) },
+    { metric_id: "string_2_power", label: "DC2 moc", unit: "W", points: historyPoints([0, 40, 240, 520, 880, 1260, 1930, 2530, 3310, 3200, 2790, 2410]) },
     { metric_id: "inverter_temp", label: "Temp. falownika", unit: "°C", points: historyPoints([22, 24, 27, 31, 35, 39, 42, 45, 47.3, 46.8, 44.1, 41.2]) },
   ],
 };
@@ -133,7 +133,7 @@ export const demoDistribution: DistributionPayload = {
   unit: "kWh",
   bucket: "day",
   total: 289.5,
-  slices: [ { label: "DC1 / Wschod", value: 154.2, share: 53.3 }, { label: "DC2 / Zachod", value: 135.3, share: 46.7 } ],
+  slices: [ { label: "DC1 / Wschód", value: 154.2, share: 53.3 }, { label: "DC2 / Zachód", value: 135.3, share: 46.7 } ],
 };
 
 export const demoHistoricalStatus: HistoricalStatus = {
@@ -171,10 +171,10 @@ export const demoHistoricalStatus: HistoricalStatus = {
     { chunk_index: 157, total_chunks: 209, start_date: "2025-01-05", end_date: "2025-01-11", processed_days: 4, imported_days: 4, skipped_days: 0, energy_kwh: 51.4, state: "running", started_at: isoAt(-6.5), finished_at: null, duration_seconds: null, note: "Aktywny chunk 2025-01-05 -> 2025-01-11" },
   ],
   recent_events: [
-    { timestamp: isoAt(-1.1), level: "success", title: "Zaimportowano dzien", message: "Zaimportowano 2025-01-08 (13.10 kWh). Energia: 13.10 kWh.", day: "2025-01-08", chunk_index: 157 },
-    { timestamp: isoAt(-1.9), level: "success", title: "Zaimportowano dzien", message: "Zaimportowano 2025-01-07 (12.84 kWh). Energia: 12.84 kWh.", day: "2025-01-07", chunk_index: 157 },
-    { timestamp: isoAt(-2.5), level: "success", title: "Zaimportowano dzien", message: "Zaimportowano 2025-01-06 (12.56 kWh). Energia: 12.56 kWh.", day: "2025-01-06", chunk_index: 157 },
-    { timestamp: isoAt(-3.2), level: "success", title: "Zaimportowano dzien", message: "Zaimportowano 2025-01-05 (12.90 kWh). Energia: 12.90 kWh.", day: "2025-01-05", chunk_index: 157 },
+    { timestamp: isoAt(-1.1), level: "success", title: "Zaimportowano dzień", message: "Zaimportowano 2025-01-08 (13.10 kWh). Energia: 13.10 kWh.", day: "2025-01-08", chunk_index: 157 },
+    { timestamp: isoAt(-1.9), level: "success", title: "Zaimportowano dzień", message: "Zaimportowano 2025-01-07 (12.84 kWh). Energia: 12.84 kWh.", day: "2025-01-07", chunk_index: 157 },
+    { timestamp: isoAt(-2.5), level: "success", title: "Zaimportowano dzień", message: "Zaimportowano 2025-01-06 (12.56 kWh). Energia: 12.56 kWh.", day: "2025-01-06", chunk_index: 157 },
+    { timestamp: isoAt(-3.2), level: "success", title: "Zaimportowano dzień", message: "Zaimportowano 2025-01-05 (12.90 kWh). Energia: 12.90 kWh.", day: "2025-01-05", chunk_index: 157 },
     { timestamp: isoAt(-3.7), level: "info", title: "Chunk 157/209", message: "Start zakresu 2025-01-05 -> 2025-01-11", day: null, chunk_index: 157 },
     { timestamp: isoAt(-6.8), level: "success", title: "Chunk 156/209 zakonczony", message: "Zakres 2024-12-29 -> 2025-01-04, import 7, pominiete 0, energia 92.60 kWh", day: null, chunk_index: 156 },
   ],

frontend/src/hooks/useRealtimeHistory.ts

@@ -4,13 +4,18 @@ import { api } from "../api/client";
 export function useRealtimeHistory(
   rangeKey: string,
   enabled = true,
-  options?: { start?: string; end?: string; metrics?: string[]; publicKiosk?: boolean },
+  options?: { start?: string; end?: string; metrics?: string[]; publicKiosk?: boolean; pauseAutoRefresh?: boolean },
 ) {
+  const manualWindow = Boolean(options?.start || options?.end);
+  const autoRefreshEnabled = !manualWindow && !options?.pauseAutoRefresh;
+
   return useQuery({
-    queryKey: ["realtime-history", rangeKey, options?.start, options?.end, options?.metrics?.join(","), options?.publicKiosk],
+    queryKey: ["realtime-history", rangeKey, options?.start, options?.end, options?.metrics?.join(","), options?.publicKiosk, autoRefreshEnabled],
     queryFn: () => api.getRealtimeHistory(rangeKey, options),
-    staleTime: 20 * 1000,
-    refetchInterval: options?.start || options?.end ? false : 30 * 1000,
+    staleTime: autoRefreshEnabled ? 20 * 1000 : Infinity,
+    refetchInterval: autoRefreshEnabled ? 30 * 1000 : false,
+    refetchOnWindowFocus: autoRefreshEnabled,
+    refetchOnReconnect: autoRefreshEnabled,
     enabled,
   });
 }

frontend/src/i18n.ts

@@ -38,6 +38,8 @@ const messages = {
     chartProduction: "Produkcja",
     chartProductionSubtitle: "Agregacja w wybranym bucketcie",
     chartComparison: "Porównanie okresów",
+    chartComparisonSubtitle: "Wspólne słupki dla aktualnego i porównawczego okresu",
+    chartComparisonControlSubtitle: "Dzień / tydzień / miesiąc z porównaniem do poprzedniego okresu lub roku",
     chartDistribution: "Rozkład produkcji",
     currentPeriod: "Bieżący okres",
     comparisonPeriod: "Porównanie",
@@ -145,6 +147,8 @@ const messages = {
     chartProduction: "Production",
     chartProductionSubtitle: "Aggregated by selected bucket",
     chartComparison: "Period comparison",
+    chartComparisonSubtitle: "Shared bars for the current and comparison periods",
+    chartComparisonControlSubtitle: "Day / week / month with previous period or previous year comparison",
     chartDistribution: "Production distribution",
     currentPeriod: "Current period",
     comparisonPeriod: "Comparison",
@@ -227,6 +231,14 @@ const metricLabels: Record<string, { pl: string; en: string }> = {
   today_vs_yesterday: { pl: "Dziś vs wczoraj", en: "Today vs yesterday" },
   dc_power_total: { pl: "Moc DC łącznie", en: "Total DC power" },
   inverter_temp: { pl: "Temperatura falownika", en: "Inverter temperature" },
+  string_1_power: { pl: "DC1 moc", en: "DC1 power" },
+  string_1_voltage: { pl: "DC1 napięcie", en: "DC1 voltage" },
+  string_2_power: { pl: "DC2 moc", en: "DC2 power" },
+  string_2_voltage: { pl: "DC2 napięcie", en: "DC2 voltage" },
+  string_3_power: { pl: "DC3 moc", en: "DC3 power" },
+  string_3_voltage: { pl: "DC3 napięcie", en: "DC3 voltage" },
+  string_4_power: { pl: "DC4 moc", en: "DC4 power" },
+  string_4_voltage: { pl: "DC4 napięcie", en: "DC4 voltage" },
 };
 
 export function t(language: Language, key: MessageKey): string {

frontend/src/index.css

@@ -111,6 +111,16 @@ body {
   .page-body {
     padding-top: 0.75rem;
   }
+
+  .pv-navbar-action {
+    gap: 0;
+    min-width: 2.5rem;
+    padding-inline: 0.7rem !important;
+  }
+
+  .pv-navbar-action-label {
+    display: none;
+  }
 }
 
 
@@ -158,6 +168,28 @@ body {
   background: rgba(127, 127, 127, 0.18) !important;
 }
 
+.pv-navbar-action {
+  display: inline-flex !important;
+  align-items: center;
+  justify-content: center;
+  gap: 0.45rem;
+  min-width: 0;
+}
+
+.pv-navbar-action-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  flex: 0 0 auto;
+  line-height: 1;
+}
+
+.pv-navbar-action-label {
+  display: inline-flex;
+  align-items: center;
+  white-space: nowrap;
+}
+
 .pv-filter-grid {
   display: grid;
   grid-template-columns: repeat(3, minmax(180px, 1fr));
@@ -165,6 +197,10 @@ body {
   align-items: end;
 }
 
+.pv-filter-grid-live {
+  grid-template-columns: minmax(260px, 1.45fr) minmax(240px, 0.92fr) minmax(210px, 0.95fr);
+}
+
 .pv-filter-grid-archive {
   grid-template-columns: minmax(240px, 1.35fr) minmax(180px, 0.9fr) repeat(2, minmax(160px, 1fr));
 }
@@ -196,6 +232,7 @@ body {
 
 @media (max-width: 992px) {
   .pv-filter-grid,
+  .pv-filter-grid-live,
   .pv-filter-grid-archive {
     grid-template-columns: 1fr;
   }
@@ -215,6 +252,28 @@ body {
   min-height: 4rem;
 }
 
+.pv-subnav-mobile-top {
+  display: none;
+}
+
+.pv-subnav-main {
+  display: flex;
+  flex: 1 1 auto;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.85rem;
+  width: 100%;
+  min-width: 0;
+}
+
+.pv-subnav-tabs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+  min-width: 0;
+}
+
 .pv-menu-tab {
   display: inline-flex !important;
   align-items: center;
@@ -247,6 +306,30 @@ body {
   min-width: 1.1rem;
 }
 
+.pv-subnav-side {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 0.85rem;
+  min-width: 0;
+  margin-left: auto;
+}
+
+.pv-subnav-refresh-desktop {
+  display: flex;
+  min-width: 0;
+}
+
+.pv-subnav-refresh-group {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 0.5rem;
+  min-width: 0;
+}
+
 .pv-menu-meta {
   display: inline-flex;
   align-items: center;
@@ -254,11 +337,502 @@ body {
   color: var(--tblr-secondary);
   font-size: 0.875rem;
   white-space: nowrap;
+  min-width: 0;
+}
+
+.pv-mobile-menu-toggle {
+  display: none !important;
+  align-items: center;
+  gap: 0.65rem;
+  border-color: transparent !important;
+  border-radius: 0.85rem !important;
+  padding: 0.7rem 0.9rem !important;
+  background: rgba(127, 127, 127, 0.1) !important;
+  color: inherit !important;
+  font-weight: 600;
+}
+
+.pv-mobile-menu-toggle:hover,
+.pv-mobile-menu-toggle:focus,
+.pv-mobile-menu-toggle.active {
+  background: rgba(127, 127, 127, 0.16) !important;
+}
+
+.pv-mobile-menu-toggle-icon {
+  display: inline-flex;
+  flex-direction: column;
+  justify-content: center;
+  gap: 0.2rem;
+  width: 1rem;
+  min-width: 1rem;
+}
+
+.pv-mobile-menu-toggle-icon span {
+  display: block;
+  width: 100%;
+  height: 2px;
+  border-radius: 999px;
+  background: currentColor;
+  transform-origin: center;
+  transition: transform 0.18s ease, opacity 0.18s ease;
+}
+
+.pv-mobile-menu-toggle.active .pv-mobile-menu-toggle-icon span:nth-child(1) {
+  transform: translateY(5px) rotate(45deg);
+}
+
+.pv-mobile-menu-toggle.active .pv-mobile-menu-toggle-icon span:nth-child(2) {
+  opacity: 0;
+}
+
+.pv-mobile-menu-toggle.active .pv-mobile-menu-toggle-icon span:nth-child(3) {
+  transform: translateY(-5px) rotate(-45deg);
+}
+
+.pv-navbar-action--icon-only {
+  width: 2.5rem;
+  min-width: 2.5rem;
+  padding-inline: 0 !important;
+}
+
+.pv-footer {
+  margin-top: auto;
+  padding: 0.9rem 0;
+  background: color-mix(in srgb, var(--tblr-bg-surface, #fff) 86%, transparent);
+  backdrop-filter: blur(14px);
+}
+
+.pv-footer-shell {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.85rem 1rem;
+  min-height: 3rem;
+}
+
+.pv-footer-item {
+  display: inline-flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.5rem;
+  min-width: 0;
+}
+
+.pv-footer-item--muted {
+  color: var(--tblr-secondary);
+}
+
+.pv-footer-icon {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--tblr-secondary);
+}
+
+.pv-footer-text {
+  min-width: 0;
+}
+
+@media (max-width: 1200px) {
+  .pv-subnav-side {
+    width: 100%;
+    justify-content: space-between;
+    margin-left: 0;
+  }
+}
+
+@media (max-width: 768px) {
+  .pv-footer-shell {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+
+  .pv-subnav-shell {
+    min-height: auto;
+  }
+
+  .pv-subnav-mobile-top {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.75rem;
+    flex-wrap: wrap;
+  }
+
+  .pv-mobile-menu-toggle {
+    display: inline-flex !important;
+  }
+
+  .pv-subnav-main {
+    display: flex;
+    flex-direction: column;
+    align-items: stretch;
+    gap: 0.75rem;
+    margin-top: 0.75rem;
+  }
+
+  .pv-subnav-tabs {
+    display: none;
+    width: 100%;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+
+  .pv-subnav-main.is-open .pv-subnav-tabs {
+    display: flex;
+  }
+
+  .pv-menu-tab {
+    width: 100%;
+    justify-content: flex-start;
+    border-radius: 0.9rem !important;
+    padding: 0.75rem 0.95rem !important;
+  }
+
+  .pv-subnav-side {
+    width: 100%;
+    flex-direction: column;
+    align-items: stretch;
+    gap: 0.75rem;
+    margin-left: 0;
+  }
+
+  .pv-subnav-refresh-desktop {
+    display: none;
+  }
+
+  .pv-subnav-mobile-top .pv-subnav-refresh-group {
+    flex: 1 1 220px;
+    justify-content: flex-end;
+  }
+
+  .pv-menu-meta {
+    width: 100%;
+    justify-content: flex-start;
+    white-space: normal;
+    font-size: 0.8125rem;
+  }
+}
+
+
+.pv-date-field,
+.pv-filter-field {
+  min-width: 0;
+}
+
+.pv-date-input {
+  min-height: 2.8rem;
+  font-size: 0.95rem;
+}
+
+.pv-action-tile,
+.pv-chip-button {
+  border-radius: 0.9rem !important;
+}
+
+.pv-order-card {
+  border: 1px solid var(--tblr-border-color, rgba(15, 23, 42, 0.12));
+  border-radius: 1rem;
+  padding: 0.9rem 1rem;
+  background: color-mix(in srgb, var(--tblr-bg-surface, #fff) 90%, transparent);
+}
+
+.pv-order-index {
+  width: 2rem;
+  min-width: 2rem;
+  height: 2rem;
+  border-radius: 999px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: 700;
+  background: rgba(32, 107, 196, 0.12);
+  color: var(--tblr-primary, #206bc4);
 }
 
 @media (max-width: 992px) {
-  .pv-menu-meta {
+  .page-header .col-auto.ms-auto {
     width: 100%;
-    white-space: normal;
+  }
+}
+
+@media (max-width: 576px) {
+  .pv-segmented-group {
+    display: grid !important;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .pv-segmented-group > .btn,
+  .pv-chip-button,
+  .pv-action-tile,
+  .pv-order-card .btn {
+    width: 100%;
+  }
+
+  .pv-filter-grid-archive {
+    grid-template-columns: 1fr;
+  }
+
+  .pv-date-input {
+    min-height: 3rem;
+  }
+
+  .pv-order-card .btn-list {
+    width: 100%;
+    display: grid;
+    grid-template-columns: 1fr;
+    gap: 0.5rem;
+  }
+}
+
+.login-layout {
+  min-height: 72vh;
+}
+
+.login-card-enhanced {
+  overflow: hidden;
+  border-width: 1px;
+}
+
+.login-card-enhanced::before {
+  content: "";
+  position: absolute;
+  inset: 0 0 auto 0;
+  height: 5px;
+  background: linear-gradient(90deg, rgba(32, 107, 196, 0.95), rgba(47, 179, 68, 0.9));
+}
+
+.login-card-enhanced .card-body {
+  position: relative;
+}
+
+.login-showcase-card {
+  border: 1px solid rgba(32, 107, 196, 0.14);
+  border-radius: 1rem;
+  padding: 2rem;
+  background:
+    radial-gradient(circle at top right, rgba(32, 107, 196, 0.18), transparent 30%),
+    rgba(255, 255, 255, 0.74);
+  box-shadow: var(--pv-card-shadow);
+}
+
+[data-bs-theme="dark"] .login-showcase-card {
+  background:
+    radial-gradient(circle at top right, rgba(32, 107, 196, 0.22), transparent 32%),
+    rgba(11, 18, 32, 0.82);
+  border-color: rgba(148, 163, 184, 0.18);
+}
+
+.login-showcase-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  padding: 0.45rem 0.75rem;
+  border-radius: 999px;
+  background: rgba(32, 107, 196, 0.12);
+  color: #206bc4;
+  font-size: 0.8rem;
+  font-weight: 600;
+  margin-bottom: 1rem;
+}
+
+.login-showcase-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 0.85rem;
+}
+
+.login-stat-card {
+  padding: 1rem;
+  border-radius: 0.9rem;
+  border: 1px solid rgba(148, 163, 184, 0.18);
+  background: rgba(255, 255, 255, 0.78);
+}
+
+[data-bs-theme="dark"] .login-stat-card {
+  background: rgba(15, 23, 42, 0.84);
+  border-color: rgba(148, 163, 184, 0.14);
+}
+
+.login-input-stack {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.login-submit-button {
+  margin-top: 0.25rem;
+}
+
+.login-footer-note {
+  margin-top: 1rem;
+  padding-top: 1rem;
+  border-top: 1px solid rgba(148, 163, 184, 0.18);
+  color: var(--tblr-secondary);
+  font-size: 0.88rem;
+}
+
+
+.pv-page-header-actions {
+  width: 100%;
+  display: flex;
+  justify-content: flex-end;
+}
+
+.pv-page-header-actions--wide {
+  width: min(100%, 920px);
+  margin-left: auto;
+}
+
+.pv-page-header-actions--right {
+  justify-items: end;
+  align-items: end;
+}
+
+.pv-page-header-actions--right > :first-child {
+  justify-self: stretch;
+}
+
+.pv-page-header-range-grid {
+  display: grid;
+  grid-template-columns: minmax(260px, 1fr) minmax(220px, 0.92fr);
+  gap: 0.75rem;
+  width: min(100%, 620px);
+}
+
+.pv-page-header-range-grid--single {
+  grid-template-columns: minmax(280px, 1fr);
+  width: min(100%, 420px);
+}
+
+.pv-refresh-panel {
+  min-width: 240px;
+}
+
+.pv-refresh-panel--compact {
+  width: min(100%, 176px);
+  min-width: 0;
+}
+
+.pv-refresh-switch {
+  position: relative;
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  align-items: center;
+  width: 100%;
+  min-height: 3rem;
+  padding: 0.28rem;
+  border: 1px solid color-mix(in srgb, var(--tblr-border-color, rgba(148, 163, 184, 0.2)) 90%, transparent);
+  border-radius: 999px;
+  background: color-mix(in srgb, var(--tblr-bg-surface, #fff) 88%, rgba(32, 107, 196, 0.05));
+  color: var(--tblr-secondary);
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
+  overflow: hidden;
+  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
+}
+
+.pv-refresh-switch:hover,
+.pv-refresh-switch:focus-visible {
+  border-color: color-mix(in srgb, var(--tblr-primary, #206bc4) 36%, var(--tblr-border-color, rgba(148, 163, 184, 0.18)));
+  box-shadow: 0 0 0 0.12rem rgba(32, 107, 196, 0.12);
+}
+
+.pv-refresh-panel--compact .pv-refresh-switch {
+  min-height: 2.5rem;
+  padding: 0.18rem;
+}
+
+.pv-refresh-switch-thumb {
+  position: absolute;
+  top: 0.28rem;
+  bottom: 0.28rem;
+  left: 0.28rem;
+  width: calc(50% - 0.28rem);
+  border-radius: 999px;
+  background: linear-gradient(135deg, rgba(32, 107, 196, 0.96), rgba(52, 118, 220, 0.86));
+  box-shadow: 0 10px 24px rgba(32, 107, 196, 0.2);
+  transition: transform 0.22s ease;
+}
+
+.pv-refresh-switch.is-paused .pv-refresh-switch-thumb {
+  transform: translateX(100%);
+  background: linear-gradient(135deg, rgba(100, 116, 139, 0.96), rgba(71, 85, 105, 0.86));
+  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.18);
+}
+
+.pv-refresh-switch-option {
+  position: relative;
+  z-index: 1;
+  min-width: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 2.35rem;
+  padding: 0 0.75rem;
+  font-size: 0.92rem;
+  font-weight: 700;
+  color: var(--tblr-secondary);
+  transition: color 0.18s ease, opacity 0.18s ease;
+}
+
+.pv-refresh-panel--compact .pv-refresh-switch-thumb {
+  top: 0.18rem;
+  bottom: 0.18rem;
+  left: 0.18rem;
+  width: calc(50% - 0.18rem);
+}
+
+.pv-refresh-panel--compact .pv-refresh-switch-option {
+  min-height: 1.95rem;
+  padding: 0 0.7rem;
+  font-size: 0.84rem;
+}
+
+.pv-refresh-switch.is-auto .pv-refresh-switch-option--auto,
+.pv-refresh-switch.is-paused .pv-refresh-switch-option--paused {
+  color: #fff;
+}
+
+.pv-refresh-switch.is-auto .pv-refresh-switch-option--paused,
+.pv-refresh-switch.is-paused .pv-refresh-switch-option--auto {
+  opacity: 0.82;
+}
+
+.pv-chart-footer-controls {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr)) minmax(220px, 1.1fr);
+  gap: 0.85rem;
+  align-items: end;
+}
+
+.pv-chart-footer-status {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+@media (max-width: 992px) {
+  .pv-chart-footer-controls,
+  .pv-page-header-range-grid,
+  .pv-page-header-range-grid--single {
+    grid-template-columns: 1fr;
+    width: 100%;
+  }
+
+  .pv-page-header-actions,
+  .pv-page-header-actions--wide {
+    width: 100%;
+  }
+}
+
+@media (max-width: 576px) {
+  .pv-refresh-panel {
+    min-width: 0;
+  }
+
+  .pv-refresh-switch-option {
+    font-size: 0.88rem;
+    padding: 0 0.55rem;
   }
 }

frontend/vite.config.ts

@@ -2,14 +2,20 @@ import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 import tailwindcss from "@tailwindcss/vite";
 
+const noStoreHeaders = {
+  "Cache-Control": "no-store, no-cache"
+};
+
 export default defineConfig({
   plugins: [react(), tailwindcss()],
   server: {
     host: "0.0.0.0",
-    port: 5173
+    port: 5173,
+    headers: noStoreHeaders,
   },
   preview: {
     host: "0.0.0.0",
-    port: 4173
-  }
+    port: 4173,
+    headers: noStoreHeaders,
+  },
 });