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.

openspec/changes/archive/2026-07-09-service-storage-harness/specs/.pi-map.md

@@ -0,0 +1,18 @@
+# openspec/changes/archive/2026-07-09-service-storage-harness/specs
+dir: openspec/changes/archive/2026-07-09-service-storage-harness/specs
+
+index: openspec/changes/archive/2026-07-09-service-storage-harness/specs/.pi-map.index.md
+
+## role
+Directory containing archived OpenSpec change specifications for the service storage harness feature implemented on 2026-07-09.
+## files
+## arch
+Flat-file specification archive following OpenSpec change-tracking conventions, preserving historical design docs and spec deltas for auditability.
+## tags
+-
+## symbols
+-
+## workflows
+-
+## dirty
+-