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/specs/prometheus-charting/.pi-map.index.md

@@ -0,0 +1,19 @@
+# openspec/specs/prometheus-charting (index)
+dir: openspec/specs/prometheus-charting
+
+## role
+Specification package defining requirements for replacing Grafana with native Prometheus-backed metric visualization widgets in a Manage application.
+## parent
+index: openspec/specs/.pi-map.index.md
+map: openspec/specs/.pi-map.md
+## children
+-
+## files
+- spec.md
+## links
+index: openspec/specs/prometheus-charting/.pi-map.index.md
+map: openspec/specs/prometheus-charting/.pi-map.md
+## workflows
+-
+## dirty
+-

openspec/specs/prometheus-charting/.pi-map.md

@@ -0,0 +1,19 @@
+# openspec/specs/prometheus-charting
+dir: openspec/specs/prometheus-charting
+
+index: openspec/specs/prometheus-charting/.pi-map.index.md
+
+## role
+Specification package defining requirements for replacing Grafana with native Prometheus-backed metric visualization widgets in a Manage application.
+## files
+- spec.md | Specification defining the requirements for replacing Grafana with direct Prometheus-backed metric visualization widgets (chart, gauge, mean) in a Manage application.
+## arch
+Specification-driven document architecture capturing functional requirements, use cases, and integration design for direct Prometheus API-based charting components (chart, gauge, mean).
+## tags
+spec, specification, defining, requirements, replacing, grafana, direct, prometheus
+## symbols
+-
+## workflows
+-
+## dirty
+-