feat: refactor parsing and scanning logic for test files

- Updated `parseFilename` to `parseTargetFilename` and modified its return structure to include `test_id` instead of `file_id`.
- Introduced `parseResultFilename` to extract `test_id` and `device` from result file names.
- Enhanced `fullScan` to separately handle target and results directories, improving clarity and functionality.
- Updated database interactions to use `test_id` instead of `file_id` across various modules.
- Added a new `/rescan` endpoint to trigger a full scan of target and results directories.
- Improved logging and error handling throughout the scanning process.
- Introduced `parseTputRssi` to extract throughput and RSSI data from log files.

server/package.json

@@ -5,12 +5,17 @@
   "main": "index.js",
   "scripts": {
     "start": "node index.js",
-    "dev": "node --watch index.js"
+    "dev": "node --watch index.js",
+    "test": "jest"
   },
   "dependencies": {
+    "better-sqlite3": "^12.10.0",
     "chokidar": "^4.0.3",
     "cors": "^2.8.5",
     "dotenv": "^16.4.5",
     "express": "^4.19.2"
+  },
+  "devDependencies": {
+    "jest": "^30.4.2"
   }
 }