docs: reformat FEATURES.md — summary table with dates, numerical order

- All 10 FEATs now in strict numerical order under single Feature ideas section
- Added summary table (ID, Status, Created, Title, Phase) for quick scanning
- Created dates sourced from git history (ef3a951 through bc29a01)
- Removed orphan Ideas that landed section (FEAT-06/07 merged into main flow)

android/app/src/main/java/com/yarisobd/app/DownloadWorker.kt

@@ -24,13 +24,18 @@ import okhttp3.Request
 import okio.buffer
 import okio.sink
 import java.io.File
+import java.util.concurrent.TimeUnit
 
 class DownloadWorker(
     context: Context,
     params: WorkerParameters,
 ) : CoroutineWorker(context, params) {
 
-    private val okHttp = OkHttpClient.Builder().build()
+    private val okHttp = OkHttpClient.Builder()
+        .connectTimeout(30, TimeUnit.SECONDS)
+        .readTimeout(30, TimeUnit.MINUTES)  // slow Pi WiFi can take 5min+ per file
+        .writeTimeout(30, TimeUnit.SECONDS)
+        .build()
     private val notificationManager = NotificationManagerCompat.from(context)
 
     companion object {
@@ -69,13 +74,16 @@ class DownloadWorker(
         dir.mkdirs()
         val localFile = File(dir, filename)
 
-        // Skip if already downloaded
+        // Skip if already downloaded with correct size
         if (localFile.exists() && localFile.length() == totalSize && totalSize > 0) {
             return@withContext Result.success(
                 workDataOf("filename" to filename, "bytes" to totalSize)
             )
         }
 
+        // Delete partial from previous failed attempt
+        localFile.delete()
+
         setForeground(createForegroundInfo(filename))
 
         try {