feat: maintenance windows, reports, uptime widget, alert improvements

- Add maintenance window scheduling to suppress alerts during planned
  downtime (model, routes, templates)
- Add weekly email/webhook reports with host summary (core/reports.py,
  Settings → Reports tab)
- Add host uptime history widget with per-check sparkline view
- Expand alert rules: dynamic metric catalog for plugin sources,
  per-rule HTMX field loading, maintenance window awareness
- Register additional dashboard widgets (uptime, SNMP, UniFi, UPS)
- Add Settings → Reports tab configuration

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

fabledscryer/app.py

@@ -49,7 +49,7 @@ def create_app(
     if not testing:
         from .core.settings import (
             load_settings_sync, to_smtp_cfg, to_webhook_cfg,
-            to_ansible_cfg, to_plugins_cfg,
+            to_ansible_cfg, to_plugins_cfg, to_oidc_cfg, to_ldap_cfg,
         )
         _settings = load_settings_sync(app.config["DATABASE_URL"])
         app.config.update(
@@ -60,6 +60,8 @@ def create_app(
             WEBHOOK=to_webhook_cfg(_settings),
             ANSIBLE=to_ansible_cfg(_settings),
             PLUGINS=to_plugins_cfg(_settings),
+            OIDC=to_oidc_cfg(_settings),
+            LDAP=to_ldap_cfg(_settings),
         )
     else:
         app.config.update(
@@ -70,6 +72,8 @@ def create_app(
             WEBHOOK={},
             ANSIBLE={},
             PLUGINS={},
+            OIDC={"enabled": False},
+            LDAP={"enabled": False},
         )
 
     # ── 5. Plugin migrations ───────────────────────────────────────────────────
@@ -95,6 +99,7 @@ def create_app(
     from .alerts.routes import alerts_bp
     from .ansible.routes import ansible_bp
     from .settings.routes import settings_bp
+    from .audit.routes import audit_bp
 
     app.register_blueprint(auth_bp)
     app.register_blueprint(dashboard_bp)
@@ -104,6 +109,7 @@ def create_app(
     app.register_blueprint(alerts_bp)
     app.register_blueprint(ansible_bp)
     app.register_blueprint(settings_bp)
+    app.register_blueprint(audit_bp)
 
     # ── 8. Build task registry ─────────────────────────────────────────────────
     app._task_registry = []
@@ -199,7 +205,17 @@ def _register_core_tasks(app: Quart) -> None:
         from .core.cleanup import run_cleanup as _cleanup
         await _cleanup(app)
 
+    async def run_report_check():
+        from .core.reports import check_and_send
+        await check_and_send(app)
+
     app._task_registry.extend([
+        ScheduledTask(
+            name="weekly_report_check",
+            coro_factory=run_report_check,
+            interval_seconds=3600,
+            run_on_startup=False,
+        ),
         ScheduledTask(
             name="ping_monitor",
             coro_factory=run_ping_monitors,