feat(places): add self-hosted geocoding with Pelias (DACH)

New mana-geocoding service (port 3018) wraps a self-hosted Pelias
instance with LRU caching and OSM→PlaceCategory auto-mapping.
All geocoding queries stay within our infrastructure — no user
location data leaves the network.

Places module integration:
- Address autocomplete search in ListView (creates place with
  name, coords, address, category in one step)
- Address search + reverse geocoding button in DetailView
- Auto-fill address via reverse geocoding during tracking
- OSM category mapping (amenity:restaurant→food, shop:*→shopping, etc.)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

services/mana-geocoding/package.json

@@ -0,0 +1,17 @@
+{
+	"name": "@mana/geocoding",
+	"version": "0.1.0",
+	"private": true,
+	"type": "module",
+	"scripts": {
+		"dev": "bun run --watch src/index.ts",
+		"start": "bun run src/index.ts",
+		"test": "bun test"
+	},
+	"dependencies": {
+		"hono": "^4.7.0"
+	},
+	"devDependencies": {
+		"typescript": "^5.9.3"
+	}
+}