🔄 refactor: Migrate Cache Logic to TypeScript (#9771)

* Refactor: Moved Redis cache infra logic into `packages/api`
- Moved cacheFactory and redisClients from `api/cache` into `packages/api/src/cache` so that features in `packages/api` can use cache without importing backward from the backend.
- Converted all moved files into TS with proper typing.
- Created integration tests to run against actual Redis servers for redisClients and cacheFactory.
- Added a GitHub workflow to run integration tests for the cache feature.
- Bug fix: keyvRedisClient now implements the PING feature properly.

* chore: consolidate imports in getLogStores.js

* chore: reorder imports

* chore: re-add fs-extra as dev dep.

* chore: reorder imports in cacheConfig.ts, cacheFactory.ts, and keyvMongo.ts

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

api/package.json

@@ -42,7 +42,6 @@
     "@azure/storage-blob": "^12.27.0",
     "@google/generative-ai": "^0.24.0",
     "@googleapis/youtube": "^20.0.0",
-    "@keyv/redis": "^4.3.3",
     "@langchain/community": "^0.3.47",
     "@langchain/core": "^0.3.62",
     "@langchain/google-genai": "^0.2.13",
@@ -59,7 +58,6 @@
     "axios": "^1.12.1",
     "bcryptjs": "^2.4.3",
     "compression": "^1.8.1",
-    "connect-redis": "^8.1.0",
     "cookie": "^0.7.2",
     "cookie-parser": "^1.4.7",
     "cors": "^2.8.5",
@@ -77,17 +75,13 @@
     "googleapis": "^126.0.1",
     "handlebars": "^4.7.7",
     "https-proxy-agent": "^7.0.6",
-    "ioredis": "^5.3.2",
     "js-yaml": "^4.1.0",
     "jsonwebtoken": "^9.0.0",
     "jwks-rsa": "^3.2.0",
-    "keyv": "^5.3.2",
-    "keyv-file": "^5.1.2",
     "klona": "^2.0.6",
     "librechat-data-provider": "*",
     "lodash": "^4.17.21",
     "meilisearch": "^0.38.0",
-    "memorystore": "^1.6.7",
     "mime": "^3.0.0",
     "module-alias": "^2.2.3",
     "mongoose": "^8.12.1",
@@ -107,7 +101,6 @@
     "passport-jwt": "^4.0.1",
     "passport-ldapauth": "^3.0.1",
     "passport-local": "^1.0.0",
-    "rate-limit-redis": "^4.2.0",
     "sharp": "^0.33.5",
     "tiktoken": "^1.0.15",
     "traverse": "^0.6.7",