chore: regenerate stale .pi-map.md / .pi-map.index.md project maps

Project map had drifted: claimed recharts unused (was used), ObservabilityPage.tsx
exists (refactored to service-tabs/), missed JellyfinNowPlayingWidget +
authentik/backups service types. Regenerate to reflect post-change reality:
new Qbittorrent/LineSeriesChart/Prometheus{Gauge,Mean}Widget files,
service_data.py/qbittorrent_store.py, canonical prometheus-charting +
service-storage specs, archived changes.

frontend/src/integrations/__tests__/.pi-map.md

@@ -0,0 +1,20 @@
+# frontend/src/integrations/__tests__
+dir: frontend/src/integrations/__tests__
+
+index: frontend/src/integrations/__tests__/.pi-map.index.md
+
+## role
+Test suite that validates navigation entry generation logic for service type configurations.
+## files
+- navEntries.test.ts | Tests the `configuredNavEntries` function and `SERVICE_TYPE_NAV_ENTRIES` constant to verify correct navigation entry generation based on configured service types. | dep: vitest, ../navEntries
+## arch
+Unit testing pattern verifying pure functions and constants produce expected navigation structures based on input configuration.
+## tags
+nav, service, entries.test, tests, configurednaventries, type, entries, constant
+## symbols
+-
+## workflows
+- update __tests__ tests
+  read: navEntries.test.ts
+## dirty
+-