feat(logs): app log store — backend pino DB sink + frontend error collection

Add a third data stream (app_logs), distinct from the signed ledger and device
telemetry, for operational/diagnostic logs — an offline appliance has no Sentry to
ship to, so the host is the log store.

Backend: a pino stream tees warn/error/fatal into app_logs (info/debug stay
stdout-only) with no call-site change; the DB is built before Fastify so the logger
has its sink. Frontend (lib/logger.ts): ships failed API requests (minus 401 churn),
window.onerror, unhandledrejection, and a top-level React ErrorBoundary; console
warn/error forwarded only at debug/trace. Batched/throttled POST, sendBeacon on
pagehide, loop-safe (never logs the /api/logs call), best-effort everywhere.

POST /api/logs (any signed-in user, CSRF, tolerant) + GET /api/logs gated by a new
log:read permission (new `log` RBAC resource; admin holds it). Retention: pruned by
age + row cap, hourly + at startup. UI: a Logs screen under /setup (filter
level/source/since, expand to context+stack), sq+en. Migration 0009_app_logs.

Verified end-to-end via app.inject: login -> POST 204 -> GET 200 with the record;
backend warn/error persisted, info dropped; non-admin GET 403 / POST 204.

Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V

wiki/index.md

@@ -7,7 +7,7 @@ updated: 2026-06-19
 # Index
 
 Content catalog for the wiki. Start at [[overview]]. Maintained on every ingest.
-Counts: 4 sources · 19 entities · 42 concepts · 5 decision records.
+Counts: 4 sources · 19 entities · 44 concepts · 5 decision records.
 
 ## Overview & navigation
 - [[overview]] — the top-level synthesis and entry point.
@@ -93,6 +93,7 @@ Counts: 4 sources · 19 entities · 42 concepts · 5 decision records.
 - [[ticket-encoding]] — transient ticket id (11-digit numeric + Luhn) as Code128; printed at entry, scanned at pay station + exit; barcode geometry must fit paper width (KP-300H overflow); plate-as-ticket alt.
 - [[anti-passback]] — block/flag one id entering twice without an exit; fold over open sessions.
 - [[device-events]] — unsigned hardware telemetry (relay/printer/camera/reader/input); separate from the signed ledger.
+- [[app-logs]] — the third stream: diagnostic logs (backend warn+ pino sink + frontend errors) → app_logs; log:read viewer; pruned by age+row cap.
 - [[subscription]] — recurring plan (e.g. 10,000 ALL/month); RF/QR or plate identity, car-count + max-concurrent, host-in-loop; short-circuits payment. (Renamed from "permit"; time-of-day windows noted, deferred.)
 - [[opencv-anpr-service]] — host-side vision microservice: ANPR (plate identity) + vehicle verification (anti-plate-spoofing witness).
 - [[blocklist]] — barred plates/cards refused at entry (never at exit); signed, attributed.