docs: add BUG-14 (Nominatim slowness), update PLAN.md Phase 26 (14 bugs)

- BUG-14: Nominatim replaced with offline reverse_geocoder — instant, no network
- PLAN.md Phase 26: 13 → 14 bugs resolved, updated result summary

BUGS.md

@@ -25,6 +25,18 @@ When CLOSED, move the entire entry to Resolved — don't duplicate.
 - **Verification**: Deployed to Unraid (Docker rebuild) and Pi (git pull + restart).
   Both healthy. Unraid now uses SSH deploy key for git fetch (was failing on HTTPS auth).
 
+### BUG-14 — Geocode slow/unreliable — location labels fail to load during scrubbing
+- **Status**: `CLOSED` 2026-08-12
+- **Commit**: `0ddfe39`
+- **Fix**: Ditched Nominatim entirely — it was slow (1 req/sec rate limit, ~4s
+  timeouts) and often blocked/throttled from Docker/Cloudflare IPs. Replaced with
+  reverse_geocoder exclusively: an offline Python library that maps lat/lon →
+  city/province instantly with no network. JS `preload()` switched from N individual
+  GET requests to single `POST /api/geocode/batch`. Server batch endpoint simplified
+  to sequential loop with lru_cache + dedup.
+- **Verification**: `POST /api/geocode/batch` returns `{"Montreal, Quebec",
+  "Longueuil, Quebec"}` instantly on Pi. Server Docker rebuilt and healthy.
+
 
 ### BUG-01 — WiFi/hotspot unreachable from phone while cell data is on
 - **Status**: `CLOSED` 2026-08-11