feat: add multi-ID delete support with per-ID results

- Add delete_bounties() method to BountyService that returns individual
  results per bounty ID (deleted, not_found, permission_denied)
- Update cmd_delete to accept multiple IDs and show per-ID messages
- Add 3 tests for delete_bounties method

Example output:
/delete 1 2 3
✅ Bounty #1 deleted.
✅ Bounty #2 deleted.
⛔ Bounty #3 not found.

Fixes #47

apps/telegram-bot/commands.py

@@ -318,11 +318,11 @@ cmd_edit = cmd_update
 async def cmd_delete(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     args = extract_args(update.message.text)
     if not args:
-        await update.message.reply_text("Usage: /delete <bounty_id>")
+        await update.message.reply_text("Usage: /delete <bounty_id> [bounty_id ...]")
         return
 
     try:
-        bounty_id = int(args[0])
+        bounty_ids = [int(arg) for arg in args]
     except ValueError:
         await update.message.reply_text("Invalid bounty ID.")
         return
@@ -331,19 +331,25 @@ async def cmd_delete(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     room_id = get_room_id(update)
 
     try:
-        success = BOUNTY_SERVICE.delete_bounty(
+        results = BOUNTY_SERVICE.delete_bounties(
             room_id=room_id,
-            bounty_id=bounty_id,
+            bounty_ids=bounty_ids,
             user_id=user_id,
         )
     except PermissionError as e:
         await update.message.reply_text(f"⛔ {e}")
         return
 
-    if success:
-        await update.message.reply_text(f"✅ Bounty #{bounty_id} deleted.")
-    else:
-        await update.message.reply_text("Bounty not found.")
+    response_lines = []
+    for bounty_id, result in results.items():
+        if result == "deleted":
+            response_lines.append(f"✅ Bounty #{bounty_id} deleted.")
+        elif result == "not_found":
+            response_lines.append(f"⛔ Bounty #{bounty_id} not found.")
+        elif result == "permission_denied":
+            response_lines.append(f"⛔ Bounty #{bounty_id} permission denied.")
+
+    await update.message.reply_text("\n".join(response_lines))
 
 
 async def cmd_track(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None: