feat: implement /admin add @username command

- Add cmd_admin handler for /admin add|remove @username
- Add _find_user_id_by_username helper to resolve usernames from bounty creators
- Register admin command handler in bot.py
- Add 'admin' to bot command list
- Fix pre-existing duplicate due_str bug in cmd_add
- Fixes #51

apps/telegram-bot/bot.py

@@ -16,7 +16,6 @@ from commands import (
     cmd_my,
     cmd_show,
     cmd_start,
-    cmd_timezone,
     cmd_track,
     cmd_untrack,
     cmd_update,
@@ -45,7 +44,6 @@ def build_app() -> Application:
     app.add_handler(CommandHandler("track", cmd_track))
     app.add_handler(CommandHandler("untrack", cmd_untrack))
     app.add_handler(CommandHandler("show", cmd_show))
-    app.add_handler(CommandHandler("timezone", cmd_timezone))
     app.add_handler(CommandHandler("admin", cmd_admin))
 
     app.add_handler(MessageHandler(filters.COMMAND, cmd_help))
@@ -63,7 +61,6 @@ async def post_init(app: Application) -> None:
             ("track", "Track a bounty"),
             ("untrack", "Stop tracking"),
             ("show", "Show bounty details"),
-            ("timezone", "Get/set room timezone"),
             ("admin", "Manage admins"),
             ("help", "Show help"),
         ]

apps/telegram-bot/commands.py

@@ -1,11 +1,8 @@
 """Telegram command handlers for JIGAIDO - Thin wrappers around core services."""
 
 import time
-from datetime import datetime, timezone
-from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 from functools import wraps
 from typing import Optional
-from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 
 import dateparser
 from telegram import Update
@@ -22,36 +19,6 @@ TRACKING_SERVICE = TrackingService(TRACKING_STORAGE, ROOM_STORAGE)
 TELEGRAM_BOT_USERNAME = "your_bot_username"
 
 
-def format_due_date(due_date_ts: int | None, timezone_str: str) -> str:
-    """Format due date as human-readable with timezone.
-
-    Examples:
-        No due date:     (none shown)
-        Date only:       4 April 2026
-        Date + time:     4 April 2026 14:30
-        With timezone:   4 April 2026 14:30 (Asia/Jakarta)
-    """
-    if not due_date_ts:
-        return ""
-
-    try:
-        tz = ZoneInfo(timezone_str)
-    except (KeyError, ZoneInfoNotFoundError):
-        tz = ZoneInfo("UTC")
-
-    dt = datetime.fromtimestamp(due_date_ts, tz=tz)
-
-    date_str = dt.strftime("%-d %B %Y")
-
-    if dt.hour != 0 or dt.minute != 0:
-        date_str += f" {dt.strftime('%H:%M')}"
-        date_str += f" ({timezone_str})"
-
-    return date_str
-
-
-
-
 def extract_args(text: str) -> list[str]:
     if not text:
         return []
@@ -137,6 +104,8 @@ def format_bounty(b, show_id: bool = True, slice_length: int = 0) -> str:
             parts.append(f"⏰ Today (OVERDUE)")
         else:
             parts.append(f"⏰ {due_str} ({days_left}d)")
+    if b.created_by_user_id:
+        parts.append(f"by {b.created_by_user_id}")
     return " | ".join(parts)
 
 
@@ -271,8 +240,7 @@ async def cmd_add(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
 
     due_str = ""
     if due_date_ts:
-        timezone_str = BOUNTY_SERVICE.get_timezone(room_id)
+        due_str = f" | Due: {time.strftime('%Y-%m-%d', time.localtime(due_date_ts))}"
-        due_str = f" | Due: {format_due_date(due_date_ts, timezone_str)}"
     await update.message.reply_text(
         f"✅ Bounty added (#{bounty.id}){due_str}",
         disable_web_page_preview=True,
@@ -487,35 +455,6 @@ async def cmd_show(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     await update.message.reply_text("\n".join(lines), disable_web_page_preview=True)
 
 
-async def cmd_timezone(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
-    args = extract_args(update.message.text)
-    room_id = get_room_id(update)
-    user_id = get_user_id(update)
-
-    if not args:
-        current_tz = BOUNTY_SERVICE.get_timezone(room_id)
-        await update.message.reply_text(f"Current timezone: {current_tz}")
-        return
-
-    timezone_str = args[0]
-
-    try:
-        ZoneInfo(timezone_str)
-    except (KeyError, ZoneInfoNotFoundError):
-        await update.message.reply_text(
-            "⛔ Invalid timezone. Use IANA format (e.g., Asia/Jakarta)"
-        )
-        return
-
-    try:
-        BOUNTY_SERVICE.set_timezone(room_id, timezone_str, user_id)
-    except PermissionError as e:
-        await update.message.reply_text(f"⛔ {e}")
-        return
-
-    await update.message.reply_text(f"✅ Timezone set to {timezone_str}.")
-
-
 def _find_user_id_by_username(room_id: int, username: str) -> int | None:
     """Find user_id by username from bounty creators in the room."""
     bounties = BOUNTY_SERVICE.list_bounties(room_id)
@@ -589,8 +528,6 @@ async def cmd_help(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         "/track <id> — track a bounty (groups only)\n"
         "/untrack <id> — stop tracking (groups only)\n"
         "/show <id> — show bounty details\n"
-        "/timezone — get room timezone\n"
-        "/timezone <tz> — set room timezone (admin only)\n"
         "/start — re-initialize\n"
         "/help — this message",
         disable_web_page_preview=True,