feat(cache): PG kv_cache ported from MP TTLCache, TMDB request and recognize caches

Migration 0042_cache adds UNLOGGED kv_cache. PgCache mirrors MP
runtime/cache.py (region, per-key TTL, TLRU maxsize eviction, @cached as
cachedCall); only the storage moves from memory to PG. TMDB request
responses (MP TMDb.request @cached) and recognize results (MP TmdbCache:
same key, {id:0} negative cache with EMPTY_RESULT_CACHE_TTL, type-conflict
checks, backfill after manual assignment) live in kv_cache, shared by all
processes. Settings cache.tmdbTtlHours / tmdbMaxSize / emptyResultTtlSec
map to META_CACHE_EXPIRE / CONF.tmdb / EMPTY_RESULT_CACHE_TTL. TMDB
details now also store posterPath / backdropPath.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/server/src/modules/index.ts

@@ -2,6 +2,7 @@ import { acquisitionOrganizeModule } from "./acquisition-organize/index.ts";
 import { agentModule } from "./agent/index.ts";
 import { authSettingsModule } from "./auth-settings/index.ts";
 import { browserModule } from "./browser/index.ts";
+import { cacheModule } from "./cache/index.ts";
 import { fileManagerModule } from "./file-manager/index.ts";
 import { mcpModule } from "./mcp/index.ts";
 import { piModule } from "./pi/index.ts";
@@ -28,5 +29,6 @@ export const SERVER_MODULES: readonly ServerModule[] = [
   searchModule,
   browserModule,
   mcpModule,
+  cacheModule,
   systemModule,
 ];