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.

dashboard/src/App.jsx

@@ -36,11 +36,6 @@ export default function App() {
     })
   }, [allTests, filters])
 
-  function refresh() {
-    queryClient.invalidateQueries({ queryKey: ['stats'] })
-    queryClient.invalidateQueries({ queryKey: ['tests'] })
-  }
-
   const noConfig = !configLoading && !config?.target_dir && !config?.results_dir
   const configuredButEmpty = !configLoading && config?.target_dir && config?.results_dir &&
     !statsLoading && stats?.overall.total === 0
@@ -49,7 +44,7 @@ export default function App() {
     <div className="min-h-screen bg-slate-950 text-slate-100 flex flex-col">
       {/* Top bar */}
       <header className="border-b border-slate-800 px-6 py-4 flex items-center justify-between">
-        <h1 className="text-lg font-bold tracking-tight">Test Dashboard</h1>
+        <h1 className="text-lg font-bold tracking-tight">CGW453 Test Dashboard</h1>
         <div className="flex items-center gap-2">
           <button
             onClick={() => setShowConfig(true)}