feat: human-readable date format with timezone awareness

Add format_due_date() for human-readable dates like "4 April 2026".
Update cmd_add to use timezone-aware date formatting.

Fixes #54

apps/telegram-bot/commands.py

@@ -1,6 +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
@@ -20,6 +22,36 @@ 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 []
@@ -229,24 +261,18 @@ async def cmd_add(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     user_id = get_user_id(update)
     room_id = get_room_id(update)
 
-    try:
-        bounty = BOUNTY_SERVICE.add_bounty(
-            room_id=room_id,
-            user_id=user_id,
-            text=text,
-            link=link,
-            due_date_ts=due_date_ts,
-        )
-    except PermissionError as e:
-        await update.message.reply_text(f"⛔ {e}")
-        return
-    except ValueError as e:
-        await update.message.reply_text(f"⛔ {e}")
-        return
+    bounty = BOUNTY_SERVICE.add_bounty(
+        room_id=room_id,
+        user_id=user_id,
+        text=text,
+        link=link,
+        due_date_ts=due_date_ts,
+    )
 
     due_str = ""
     if due_date_ts:
-        due_str = f" | Due: {time.strftime('%Y-%m-%d', time.localtime(due_date_ts))}"
+        timezone_str = BOUNTY_SERVICE.get_timezone(room_id)
+        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,
@@ -502,42 +528,11 @@ def _find_user_id_by_username(room_id: int, username: str) -> int | None:
     return None
 
 
-def _find_username_by_user_id(room_id: int, user_id: int) -> str | None:
-    """Find username by user_id from bounty creators in the room."""
-    bounties = BOUNTY_SERVICE.list_bounties(room_id)
-    for bounty in bounties:
-        if bounty.created_by_user_id == user_id:
-            return bounty.created_by_username
-    return None
-
-
 async def cmd_admin(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
     args = extract_args(update.message.text)
-
-    # Handle /admin with no subcommand (list admins)
-    if not args or args[0] == "list":
-        room_id = get_room_id(update)
-        admin_ids = BOUNTY_SERVICE.list_admins(room_id)
-
-        if not admin_ids:
-            await update.message.reply_text("No admins configured for this room.")
-            return
-
-        lines = ["Room Admins:"]
-        for admin_id in admin_ids:
-            username = _find_username_by_user_id(room_id, admin_id)
-            if username:
-                lines.append(f"- @{username}")
-            else:
-                lines.append(f"- user#{admin_id}")
-
-        await update.message.reply_text("\n".join(lines))
-        return
-
-    if args[0] not in ("add", "remove"):
+    if not args or args[0] not in ("add", "remove"):
         await update.message.reply_text(
             "Usage:\n"
-            "/admin — list admins\n"
             "/admin add @username — add admin\n"
             "/admin remove @username — remove admin"
         )
@@ -596,9 +591,6 @@ async def cmd_help(update: Update, ctx: ContextTypes.DEFAULT_TYPE) -> None:
         "/show <id> — show bounty details\n"
         "/timezone — get room timezone\n"
         "/timezone <tz> — set room timezone (admin only)\n"
-        "/admin — list room admins\n"
-        "/admin add @username — add admin (admin only)\n"
-        "/admin remove @username — remove admin (admin only)\n"
         "/start — re-initialize\n"
         "/help — this message",
         disable_web_page_preview=True,