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/src/config.ts

@@ -0,0 +1,36 @@
+/**
+ * Application configuration loaded from environment variables.
+ */
+
+export interface Config {
+	port: number;
+	pelias: {
+		/** Pelias API base URL (the API container, not the placeholder service) */
+		apiUrl: string;
+	};
+	cors: {
+		origins: string[];
+	};
+	cache: {
+		/** Max entries in the in-memory LRU cache */
+		maxEntries: number;
+		/** TTL in milliseconds (default: 24h — geocoding results rarely change) */
+		ttlMs: number;
+	};
+}
+
+export function loadConfig(): Config {
+	return {
+		port: parseInt(process.env.PORT || '3018', 10),
+		pelias: {
+			apiUrl: process.env.PELIAS_API_URL || 'http://localhost:4000/v1',
+		},
+		cors: {
+			origins: (process.env.CORS_ORIGINS || 'http://localhost:5173').split(','),
+		},
+		cache: {
+			maxEntries: parseInt(process.env.CACHE_MAX_ENTRIES || '5000', 10),
+			ttlMs: parseInt(process.env.CACHE_TTL_MS || String(24 * 60 * 60 * 1000), 10),
+		},
+	};
+}