🔄 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>

packages/api/package.json

@@ -18,8 +18,9 @@
     "build:dev": "npm run clean && NODE_ENV=development rollup -c --bundleConfigAsCjs",
     "build:watch": "NODE_ENV=development rollup -c -w --bundleConfigAsCjs",
     "build:watch:prod": "rollup -c -w --bundleConfigAsCjs",
-    "test": "jest --coverage --watch",
-    "test:ci": "jest --coverage --ci",
+    "test": "jest --coverage --watch --testPathIgnorePatterns=\"\\.integration\\.\"",
+    "test:ci": "jest --coverage --ci --testPathIgnorePatterns=\"\\.integration\\.\"",
+    "test:cache:integration": "jest   --testPathPattern=\"src/cache/.*\\.integration\\.spec\\.ts$\" --coverage=false",
     "verify": "npm run test:ci",
     "b:clean": "bun run rimraf dist",
     "b:build": "bun run b:clean && bun run rollup -c --silent --bundleConfigAsCjs",
@@ -43,6 +44,7 @@
     "@babel/preset-env": "^7.21.5",
     "@babel/preset-react": "^7.18.6",
     "@babel/preset-typescript": "^7.21.0",
+    "@keyv/redis": "^4.3.3",
     "@rollup/plugin-alias": "^5.1.0",
     "@rollup/plugin-commonjs": "^25.0.2",
     "@rollup/plugin-json": "^6.1.0",
@@ -52,16 +54,23 @@
     "@types/bun": "^1.2.15",
     "@types/diff": "^6.0.0",
     "@types/express": "^5.0.0",
+    "@types/express-session": "^1.18.2",
     "@types/jest": "^29.5.2",
     "@types/jsonwebtoken": "^9.0.0",
     "@types/multer": "^1.4.13",
     "@types/node": "^20.3.0",
     "@types/react": "^18.2.18",
     "@types/winston": "^2.4.4",
+    "connect-redis": "^8.1.0",
+    "ioredis": "^5.3.2",
     "jest": "^29.5.0",
     "jest-junit": "^16.0.0",
+    "keyv": "^5.3.2",
+    "keyv-file": "^5.1.2",
     "librechat-data-provider": "*",
+    "memorystore": "^1.6.7",
     "mongoose": "^8.12.1",
+    "rate-limit-redis": "^4.2.0",
     "rimraf": "^5.0.1",
     "rollup": "^4.22.4",
     "rollup-plugin-peer-deps-external": "^2.2.4",
@@ -72,20 +81,27 @@
     "registry": "https://registry.npmjs.org/"
   },
   "peerDependencies": {
+    "@keyv/redis": "^4.3.3",
     "@langchain/core": "^0.3.62",
     "@librechat/agents": "^2.4.82",
     "@librechat/data-schemas": "*",
     "@modelcontextprotocol/sdk": "^1.17.1",
     "axios": "^1.12.1",
+    "connect-redis": "^8.1.0",
     "diff": "^7.0.0",
     "eventsource": "^3.0.2",
     "express": "^4.21.2",
+    "express-session": "^1.18.2",
     "form-data": "^4.0.4",
+    "ioredis": "^5.3.2",
     "js-yaml": "^4.1.0",
     "jsonwebtoken": "^9.0.0",
     "keyv": "^5.3.2",
+    "keyv-file": "^5.1.2",
     "librechat-data-provider": "*",
+    "memorystore": "^1.6.7",
     "node-fetch": "2.7.0",
+    "rate-limit-redis": "^4.2.0",
     "tiktoken": "^1.0.15",
     "undici": "^7.10.0",
     "zod": "^3.22.4"