diff --git a/.env b/.env
deleted file mode 100644
index c4c8c05..0000000
--- a/.env
+++ /dev/null
@@ -1,2 +0,0 @@
-CM_IMAGE_PREFIX=gitea.04080616.xyz/yiekheng
-DOCKER_IMAGE_TAG=latest
diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..747d4e2
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,31 @@
+# === Deployment Identity ===
+# Unique name prefix for containers and network (avoid conflicts on same host)
+CM_DEPLOY_NAME=rex-cm
+# Host port for web view (each deployment needs a unique port)
+CM_WEB_HOST_PORT=8001
+
+# === Docker Registry ===
+CM_IMAGE_PREFIX=gitea.04080616.xyz/yiekheng
+DOCKER_IMAGE_TAG=latest
+
+# === Telegram ===
+TELEGRAM_BOT_TOKEN=
+TELEGRAM_ALERT_CHAT_ID=
+# TELEGRAM_ALERT_BOT_TOKEN=
+
+# === Database ===
+DB_HOST=
+DB_USER=
+DB_PASSWORD=
+DB_NAME=
+DB_PORT=3306
+DB_CONNECTION_TIMEOUT=8
+DB_CONNECT_RETRIES=5
+DB_CONNECT_RETRY_DELAY=2
+
+# === Bot Config ===
+CM_PREFIX_PATTERN=
+CM_AGENT_ID=
+CM_AGENT_PASSWORD=
+CM_SECURITY_PIN=
+CM_BOT_BASE_URL=
diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..46f212d
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,104 @@
+# Repository Guidelines
+
+## Project Structure & Module Organization
+- `app/` contains service modules:
+  - `cm_api.py` (Flask API, serves on `3000`)
+  - `cm_web_view.py` (Flask UI, container `8000`, host `8001`)
+  - `cm_telegram.py` (Telegram bot + account monitor thread)
+  - `cm_transfer_credit.py` (scheduled transfer worker)
+  - `db.py` (MySQL connection/retry logic)
+- `docker/<service>/Dockerfile` builds one image per service (`cm-api`, `cm-web`, `cm-telegram`, `cm-transfer`).
+- `docker-compose.yml` uses registry images; `docker-compose.override.yml` swaps to local builds.
+- `scripts/local_build.sh` starts local compose; `scripts/publish.sh` builds and pushes all images via buildx.
+
+## Reproduce From Scratch (Clean Machine)
+1. Install prerequisites:
+   - Docker Engine + Docker Compose v2
+   - MySQL 8+ reachable by containers
+   - Telegram bot token(s) for bot and optional alerting
+2. Clone and enter repo:
+   ```bash
+   git clone <repo-url> cm_bot_v2
+   cd cm_bot_v2
+   ```
+3. Create `.env` at repo root for compose interpolation:
+   ```bash
+   CM_IMAGE_PREFIX=local
+   DOCKER_IMAGE_TAG=dev
+   TELEGRAM_BOT_TOKEN=<required>
+   TELEGRAM_ALERT_CHAT_ID=<optional>
+   TELEGRAM_ALERT_BOT_TOKEN=<optional>
+   CM_TRANSFER_MAX_THREADS=1
+   ```
+4. Prepare MySQL schema (minimum required):
+   ```sql
+   CREATE DATABASE rex_cm CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+   USE rex_cm;
+
+   CREATE TABLE acc (
+     username VARCHAR(64) PRIMARY KEY,
+     password VARCHAR(128) NOT NULL,
+     status   VARCHAR(32) DEFAULT '',
+     link     VARCHAR(512) DEFAULT ''
+   );
+
+   CREATE TABLE user (
+     f_username       VARCHAR(64) PRIMARY KEY,
+     f_password       VARCHAR(128) NOT NULL,
+     t_username       VARCHAR(64) NOT NULL,
+     t_password       VARCHAR(128) NOT NULL,
+     last_update_time TIMESTAMP NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
+   );
+   ```
+5. Seed at least one `acc.username` matching prefix `13c...` (required by `CM_BOT_HAL.get_next_username()`), for example:
+   ```sql
+   INSERT INTO acc (username, password, status, link) VALUES ('13c1000', 'seed', '', '');
+   ```
+6. Configure DB connection values:
+   - Default fallback is hardcoded in `app/db.py` (`DB_HOST=192.168.0.210`, etc.).
+   - For reliable reproduction, add `DB_HOST`, `DB_USER`, `DB_PASSWORD`, `DB_NAME`, `DB_PORT` to service `environment:` in compose files (at minimum `api-server`, `telegram-bot`, `transfer-bot`).
+7. Start services locally:
+   ```bash
+   docker compose -f docker-compose.yml -f docker-compose.override.yml up --build
+   ```
+   Or run `bash scripts/local_build.sh` (uses `sudo` by default).
+
+## Build, Test, and Development Commands
+- `python3 -m venv .venv && source .venv/bin/activate && pip install -r requirements.txt`: optional non-Docker local env.
+- `docker compose -f docker-compose.yml -f docker-compose.override.yml up --build`: local dev stack.
+- `docker compose up -d`: run prebuilt/published images.
+- `bash scripts/publish.sh <tag>`: build + push all service images (`gitea.04080616.xyz/yiekheng`).
+
+## Verification Checklist
+- API responds: `curl http://localhost:3000/acc/`
+- Web UI loads: open `http://localhost:8001`
+- Service logs are clean:
+  ```bash
+  docker compose logs -f api-server web-view telegram-bot transfer-bot
+  ```
+- Telegram bot validates with `/menu` and `/9` in chat after startup.
+
+## Coding Style & Naming Conventions
+- Python 3.9, 4-space indentation, snake_case for variables/functions, module names as `cm_<role>.py`.
+- Preserve existing class names (`CM_API`, `CM_BOT`, `CM_BOT_HAL`).
+- Keep environment variable names uppercase and document new ones in this file.
+- No enforced formatter/linter in-repo; match the surrounding style in touched files.
+
+## Testing Guidelines
+- No automated test suite is currently committed.
+- Required minimum before PR: run verification checklist above on local compose.
+- For logic-heavy changes, add `pytest` tests under `tests/` and include execution command/results in PR.
+
+## Commit & Pull Request Guidelines
+- Use short, focused commit subjects in imperative tone (existing history: `Fix ...`, `Update ...`, `Refactor ...`).
+- Keep each commit scoped to one behavior change.
+- PR must include:
+  - problem statement and solution summary,
+  - services/files affected,
+  - required env/config changes,
+  - API/log evidence (and UI screenshot if `cm_web_view.py` changed).
+
+## Security & Configuration Tips
+- Never commit real secrets in `.env`.
+- `app/cm_bot_hal.py` currently contains hardcoded agent credentials/pin; move these to env vars before production use.
+- Keep container clocks mounted (`/etc/timezone`, `/etc/localtime`) as compose currently defines to avoid schedule drift.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..94dd49a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,63 @@
+# CM Bot v2 – Portainer Setup (Gitea Registry)
+
+Brief, copy/paste-ready steps to run the published images from `gitea.04080616.xyz` using Portainer.
+
+## What gets deployed
+- `cm-api` (port 3000), `cm-web` (port 8000 → host `CM_WEB_HOST_PORT`), `cm-telegram`, `cm-transfer`
+- Container names prefixed with `CM_DEPLOY_NAME` (e.g. `rex-cm-telegram-bot`)
+- Docker network: `${CM_DEPLOY_NAME}-network` (bridge)
+
+## Environment configs
+
+Pre-configured `.env` files for each deployment are in the `envs/` folder:
+```
+envs/
+├── rex/.env      # Rex deployment (port 8001)
+└── siong/.env    # Siong deployment (port 8005)
+```
+
+For local development, copy the desired env to the project root:
+```bash
+cp envs/rex/.env .env
+# or
+cp envs/siong/.env .env
+```
+
+For Portainer, load the env vars from the appropriate file into the stack environment variables.
+
+## Key variables
+| Variable | Description |
+|---|---|
+| `CM_DEPLOY_NAME` | Unique prefix for containers/network (e.g. `rex-cm`, `siong-cm`) |
+| `CM_WEB_HOST_PORT` | Host port for web view (must be unique per deployment) |
+| `TELEGRAM_BOT_TOKEN` | Your Telegram bot token |
+| `DB_HOST` / `DB_USER` / `DB_PASSWORD` / `DB_NAME` | Database connection |
+| `CM_PREFIX_PATTERN` | Username prefix pattern |
+| `CM_AGENT_ID` / `CM_AGENT_PASSWORD` / `CM_SECURITY_PIN` | Agent credentials |
+| `CM_BOT_BASE_URL` | Bot API base URL |
+
+## One-time: add the registry in Portainer
+1) Portainer → **Registries** → **Add registry** → **Custom**.
+2) Name: `gitea-prod` (any)
+3) Registry URL: `gitea.04080616.xyz`
+4) Username: your Gitea username; Password: the PAT. Save.
+
+## Deploy the stack (fast path)
+1) Portainer → **Stacks** → **Add stack** → **Web editor**.
+2) Paste the contents of `docker-compose.yml` from this repo (not the override).
+3) Load all variables from the appropriate `envs/<name>/.env` into the stack environment variables.
+4) Click **Deploy the stack**. Portainer will pull `cm-<service>:<tag>` from `gitea.04080616.xyz/yiekheng` and start all four containers.
+
+## Updating to a new image tag
+1) Edit the stack → change `DOCKER_IMAGE_TAG` → **Update the stack**.
+2) Portainer re-pulls and recreates the services with the new tag.
+
+## Running multiple deployments on same host
+Each deployment needs unique values for:
+- `CM_DEPLOY_NAME` – avoids container/network name conflicts
+- `CM_WEB_HOST_PORT` – avoids port conflicts
+
+## Common issues
+- **Pull denied**: PAT missing `read:package` or wrong username/PAT in the registry entry.
+- **Port already allocated**: check `CM_WEB_HOST_PORT` is unique across deployments.
+- **No port bindings applied**: ensure network driver stays `bridge` (not `host` or `macvlan`).
diff --git a/app/cm_bot.py b/app/cm_bot.py
index 365af82..ee315a5 100644
--- a/app/cm_bot.py
+++ b/app/cm_bot.py
@@ -1,6 +1,7 @@
 import datetime
 import requests, re
 from bs4 import BeautifulSoup
+import os
 
 # with open('security_response.html', 'wb') as f:
 #     f.write(response.content)
@@ -8,9 +9,15 @@ from bs4 import BeautifulSoup
 class CM_BOT:
     def __init__(self):
         self.session = requests.Session()
-        self.base_url = 'https://cm99.net'
+        self.base_url = self._get_required_env('CM_BOT_BASE_URL')
         self.is_logged_in = False
         self._setup_headers()
+
+    def _get_required_env(self, name: str) -> str:
+        value = os.getenv(name)
+        if value is None or value == "":
+            raise RuntimeError(f"Missing required environment variable: {name}")
+        return value
         
     def _setup_headers(self):
         """Set up default headers for requests."""
@@ -323,7 +330,9 @@ class CM_BOT:
             self.is_logged_in = False
             return False
     
-    def get_max_user_in_pattern(self, prefix_pattern: str = '13c'):
+    def get_max_user_in_pattern(self, prefix_pattern: str = None):
+        if prefix_pattern is None:
+            prefix_pattern = self._get_required_env("CM_PREFIX_PATTERN")
         response = self.session.get(f'{self.base_url}/cm/json/generateUserTree?id=0')
         regex = f'\\[{prefix_pattern}\\d+]'
         matches = re.findall(regex, response.text)
@@ -363,12 +372,14 @@ class CM_BOT:
             
             if re.search('User created successfully', response.text):
                 print(f"User account: {user_id} password: {user_password} creation completed!")
+                return True
             else:
                 print(f"User account: {user_id} creation FAIL!")
+                return False
 
         except requests.exceptions.RequestException as e:
             print(f"Error creating user account: {e}")
-            return None
+            return False
         
     # def change_user_password(self, user_id: str, new_user_pass: str):
     #     try:
@@ -462,46 +473,7 @@ class CM_BOT:
 
 
 def main():
-    # user_id='testing0001'
-    # user_pass='Qwer1@34'
-
-    # # prefix = '13c'
-    user_manager = CM_BOT()
-
-    user_manager.login(
-        username = '13c4021', 
-        password = 'vX34wUk'
-    )
-
-    user_manager.transfer_credit('m94', 'Sky533535', 0.01)
-
-    # last_username = user_manager.get_max_user_in_pattern(prefix)
-    # user_id = f'{prefix}{user_manager.get_generate_username(last_username)}'
-    # user_pass = user_manager.get_random_password()
-
-    # print(user_id)
-    # print(user_pass)
-
-    # user_manager.register_user(
-    #     user_id=user_id,
-    #     user_password=user_pass
-    # )
-
-    # user_manager.logout()
-
-    # user_manager = CM_BOT(
-    #     username = user_id,
-    #     password = user_pass
-    # )
-    # user_manager.login(user_id, user_pass)
-    # print(user_manager.get_register_link())
-    
-    # user_manager.login(
-    #     username = user_id,
-    #     password = user_pass
-    # )
-
-    # user_manager.set_security_pin(user_pass)
+    print("CM_BOT helper module. Use from service entrypoints instead of running direct debug actions.")
 
 if __name__ == "__main__":
-    main()
\ No newline at end of file
+    main()
diff --git a/app/cm_bot_hal.py b/app/cm_bot_hal.py
index e5833c7..4c9ff0a 100644
--- a/app/cm_bot_hal.py
+++ b/app/cm_bot_hal.py
@@ -4,17 +4,25 @@ from .cm_bot import CM_BOT
 from .db import DB
 
 import secrets, string
+import os
+
+
+def _get_required_env(name: str) -> str:
+    value = os.getenv(name)
+    if value is None or value == "":
+        raise RuntimeError(f"Missing required environment variable: {name}")
+    return value
 
 class CM_BOT_HAL:
     def __init__(self):
         self.db = DB()
-        self.prefix = '13c'
-        self.agent_id = 'cm13a3'
-        self.agent_password = 'Sky533535'
-        self.security_pin = 'Sky533535'
+        self.prefix = _get_required_env('CM_PREFIX_PATTERN')
+        self.agent_id = _get_required_env('CM_AGENT_ID')
+        self.agent_password = _get_required_env('CM_AGENT_PASSWORD')
+        self.security_pin = _get_required_env('CM_SECURITY_PIN')
 
     def get_random_password(self):
-        length = 8
+        length = secrets.choice(range(8, 11))
         lower_case = string.ascii_lowercase
         upper_case = string.ascii_uppercase
         digits = string.digits
@@ -77,11 +85,15 @@ class CM_BOT_HAL:
             password = self.agent_password
         ) == False:
             raise Exception(f'[Fail login] {self.agent_id} cannot login.')
-        cm_bot.register_user(
-            user_id = username,
-            user_password = password
-        )
-        cm_bot.logout()
+
+        try:
+            if cm_bot.register_user(
+                user_id = username,
+                user_password = password
+            ) is False:
+                raise Exception(f'[Fail create] {username} creation failed.')
+        finally:
+            cm_bot.logout()
 
         cm_bot = CM_BOT()
         if cm_bot.login(
@@ -197,10 +209,10 @@ class CM_BOT_HAL:
 
 if __name__ == '__main__':
     bot = CM_BOT_HAL()
-    # bot.transfer_credit_api('13c4070', 'zU2QoL', '4753kit', 'Sky533535')
-    # print(bot.get_next_username('13c'))
+    # bot.transfer_credit_api('<from_user>', '<from_password>', '<to_user>', '<to_pin>')
+    # print(bot.get_next_username(bot.prefix))
     # print(bot.get_random_password())
     # bot.get_user_api()
     # bot.insert_user_to_table_acc({'username': 'test0001', 'password': 'test0001', 'link': 'test0001'})
     # print(bot.get_whatsapp_link_username('https://chat.whatsapp.com/DZDWcicr6MTFrR4kBfnJXO'))
-    # print(bot.get_user_pass_from_acc('13c4151'))
+    # print(bot.get_user_pass_from_acc('<username>'))
diff --git a/app/cm_telegram.py b/app/cm_telegram.py
index 071583e..a2de796 100644
--- a/app/cm_telegram.py
+++ b/app/cm_telegram.py
@@ -1,9 +1,13 @@
-import threading, logging, time, asyncio
+import threading, logging, time, asyncio, os
+from typing import Optional
 
 from telegram import ForceReply, Update
+from telegram.error import Conflict, InvalidToken, NetworkError, RetryAfter, TimedOut
 from telegram.ext import Application, CommandHandler, ContextTypes, MessageHandler, filters
+from telegram.request import HTTPXRequest
 
 from .cm_bot_hal import CM_BOT_HAL
+from .telegram_notifier import TelegramNotifier, get_telegram_bot_token
 
 logging.basicConfig(
     format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
@@ -14,12 +18,36 @@ logger = logging.getLogger(__name__)
 
 creating_acc_now = False
 
+def _get_required_env(name: str) -> str:
+    value = os.getenv(name)
+    if value is None or value == "":
+        raise RuntimeError(f"Missing required environment variable: {name}")
+    return value
+
+def _get_env_float(name: str, default: float) -> float:
+    try:
+        return float(os.getenv(name, str(default)))
+    except ValueError:
+        return default
+
+def _get_env_int(name: str, default: int) -> int:
+    try:
+        return int(os.getenv(name, str(default)))
+    except ValueError:
+        return default
+
+def _retry_after_seconds(retry_after) -> int:
+    if hasattr(retry_after, "total_seconds"):
+        return max(1, int(retry_after.total_seconds()))
+    return max(1, int(retry_after))
+
 async def menu_cmd_handler(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
     menu = [
         'MENU',
         '/1 - Get Acc',
         '/2 <link> - Set Security Pin',
-        '/3 <agent username> <agent password> <player username> <player password>'
+        '/3 <agent username> <player username>',
+        '/9 - Show Chat ID'
     ]
     await update.message.reply_text('\n'.join(menu))
 
@@ -48,12 +76,12 @@ async def set_security_handler(update: Update, context: ContextTypes.DEFAULT_TYP
     if len(context.args) == 0 or len(context.args) > 1:
         await update.message.reply_text('CMD is wrong, please check and retry ...')
         return
-    bot = CM_BOT_HAL()
-    if bot.is_whatsapp_url(context.args[0]) == False:
-        await update.message.reply_text('Link Format Wrong, please check and retry ...')
-        return
-    await update.message.reply_text('Start Setting Security Pin ...')
     try:
+        bot = CM_BOT_HAL()
+        if bot.is_whatsapp_url(context.args[0]) == False:
+            await update.message.reply_text('Link Format Wrong, please check and retry ...')
+            return
+        await update.message.reply_text('Start Setting Security Pin ...')
         result = bot.set_security_pin_api(context.args[0])
         del bot
         await update.message.reply_text(f"Done setting Security Pin for {result['f_username']} - {result['t_username']} !")
@@ -61,50 +89,175 @@ async def set_security_handler(update: Update, context: ContextTypes.DEFAULT_TYP
         await update.message.reply_text(f'Error: {e}')
 
 async def insert_to_user_table_handler(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
-    if len(context.args) == 0 or len(context.args) != 4:
+    if len(context.args) == 0 or len(context.args) != 2:
         await update.message.reply_text('CMD is wrong, please check and retry ...')
         return
-    bot = CM_BOT_HAL()
-    f_username, f_password, t_username, t_password = context.args
-    bot.insert_user_to_table_user(
+    try:
+        bot = CM_BOT_HAL()
+        f_username, t_username = context.args
+        security_pin = _get_required_env("CM_SECURITY_PIN")
+        f_password = bot.get_user_pass_from_acc(f_username)
+        if not f_password:
+            raise Exception(f'Cannot find password for {f_username}')
+
+        success = bot.insert_user_to_table_user(
             {
                 'f_username': f_username,
                 'f_password': f_password,
                 't_username': t_username,
-                't_password': t_password
+                't_password': security_pin
             }
         )
-    await update.message.reply_text(f'Done insert {f_username} into user table.')
+        if success is False:
+            raise Exception('Failed to insert user into table')
 
-def monitor_amount_of_available_acc():
+        await update.message.reply_text(f'Done insert {f_username} into user table.')
+    except Exception as e:
+        await update.message.reply_text(f'Error: {e}')
+
+async def show_chat_id_handler(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+    chat_id = update.effective_chat.id if update.effective_chat else "Unknown"
+    await update.message.reply_text(f'Chat ID: {chat_id}')
+
+def monitor_amount_of_available_acc(notifier: Optional[TelegramNotifier] = None):
+    global creating_acc_now
     max_available = 20
+    notifier = notifier or TelegramNotifier()
+
     while True:
-        bot = CM_BOT_HAL()
-        available_size = len(bot.get_all_available_acc())
+        bot = None
+        try:
+            bot = CM_BOT_HAL()
+            available_size = len(bot.get_all_available_acc())
 
-        if available_size <= max_available:
-            global creating_acc_now
-            creating_acc_now = True
-            for i in range(available_size, max_available):
-                bot.create_new_acc()
+            if available_size <= max_available:
+                creating_acc_now = True
+                for i in range(available_size, max_available):
+                    try:
+                        bot.create_new_acc()
+                    except Exception as exc:
+                        err_text = str(exc)
+                        logger.exception("Failed to auto create CM account: %s", err_text)
+                        if notifier:
+                            if '[Fail login]' in err_text:
+                                notifier.notify_login_failure(err_text)
+                            else:
+                                notifier.notify_generic_error(err_text)
+                        break
+        except Exception as exc:
+            logger.exception("Unexpected error while monitoring accounts: %s", exc)
+            if notifier:
+                notifier.notify_generic_error(str(exc))
+        finally:
             creating_acc_now = False
-        time.sleep(10 * 60)
-        del bot
+            if bot is not None:
+                del bot
+            time.sleep(10 * 60)
 
-def main() -> None:
-    """Start the bot."""
-    # application = Application.builder().token("5327571437:AAFlowwnAysTEMx6LtYQNTevGCboKDZoYzY").build()
-    application = Application.builder().token("5315819168:AAH31xwNgPdnk123x97XalmTW6fQV5EUCFU").build()
+async def telegram_error_handler(update: object, context: ContextTypes.DEFAULT_TYPE) -> None:
+    err = context.error
+    if err is None:
+        return
+
+    if isinstance(err, Conflict):
+        logger.warning(
+            "Telegram polling conflict detected. Ensure only one bot instance runs with this token. %s",
+            err,
+        )
+        return
+
+    if isinstance(err, RetryAfter):
+        wait_seconds = _retry_after_seconds(err.retry_after)
+        logger.warning("Telegram flood control exceeded. Retry after %s seconds.", wait_seconds)
+        return
+
+    if isinstance(err, (NetworkError, TimedOut)):
+        logger.warning("Telegram network error: %s", err)
+        return
+
+    logger.exception("Unhandled Telegram update error", exc_info=err)
+
+def build_application(bot_token: str) -> Application:
+    request_kwargs = dict(
+        connect_timeout=_get_env_float('TELEGRAM_CONNECT_TIMEOUT', 10.0),
+        read_timeout=_get_env_float('TELEGRAM_READ_TIMEOUT', 30.0),
+        write_timeout=_get_env_float('TELEGRAM_WRITE_TIMEOUT', 30.0),
+        pool_timeout=_get_env_float('TELEGRAM_POOL_TIMEOUT', 10.0),
+    )
+    request = HTTPXRequest(**request_kwargs)
+    get_updates_request = HTTPXRequest(**request_kwargs)
+    application = (
+        Application.builder()
+        .token(bot_token)
+        .request(request)
+        .get_updates_request(get_updates_request)
+        .build()
+    )
     application.add_handler(CommandHandler("menu", menu_cmd_handler))
     application.add_handler(CommandHandler("1", get_acc_handler))
     application.add_handler(CommandHandler("2", set_security_handler))
     application.add_handler(CommandHandler("3", insert_to_user_table_handler))
+    application.add_handler(CommandHandler("9", show_chat_id_handler))
+    application.add_error_handler(telegram_error_handler)
     # application.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, echo))
+    return application
+
+def run_polling_forever(bot_token: str) -> None:
+    retry_delay = max(1, _get_env_int('TELEGRAM_POLLING_RETRY_DELAY', 5))
+    max_retry_delay = max(retry_delay, _get_env_int('TELEGRAM_POLLING_MAX_RETRY_DELAY', 60))
+    bootstrap_retries = _get_env_int('TELEGRAM_BOOTSTRAP_RETRIES', 0)
+
+    while True:
+        logger.info(
+            "Starting Telegram polling (bootstrap_retries=%s, long_poll_timeout=%s, retry_delay=%ss).",
+            bootstrap_retries,
+            _get_env_int('TELEGRAM_LONG_POLL_TIMEOUT', 30),
+            retry_delay,
+        )
+        application = build_application(bot_token)
+        try:
+            application.run_polling(
+                allowed_updates=Update.ALL_TYPES,
+                timeout=_get_env_int('TELEGRAM_LONG_POLL_TIMEOUT', 30),
+                bootstrap_retries=bootstrap_retries,
+            )
+            return
+        except InvalidToken as exc:
+            logger.exception(
+                "Invalid Telegram bot token. Check TELEGRAM_BOT_TOKEN and restart after fixing it: %s",
+                exc,
+            )
+            raise
+        except RetryAfter as exc:
+            wait_seconds = _retry_after_seconds(exc.retry_after)
+            logger.warning("Telegram flood control exceeded. Restarting polling in %s seconds.", wait_seconds)
+            time.sleep(wait_seconds)
+            retry_delay = min(wait_seconds, max_retry_delay)
+        except Conflict as exc:
+            logger.warning("Telegram polling conflict detected: %s", exc)
+            logger.warning("Another bot instance is likely running with the same token. Retrying in %s seconds.", retry_delay)
+            time.sleep(retry_delay)
+            retry_delay = min(retry_delay * 2, max_retry_delay)
+        except (NetworkError, TimedOut) as exc:
+            logger.warning("Telegram network error while polling: %s", exc)
+            logger.warning("Retrying polling in %s seconds.", retry_delay)
+            time.sleep(retry_delay)
+            retry_delay = min(retry_delay * 2, max_retry_delay)
+        except Exception as exc:
+            logger.exception("Unexpected polling crash: %s", exc)
+            logger.warning("Retrying polling in %s seconds.", retry_delay)
+            time.sleep(retry_delay)
+            retry_delay = min(retry_delay * 2, max_retry_delay)
+
+def main() -> None:
+    """Start the bot."""
+    bot_token = get_telegram_bot_token()
 
     # Start the Telegram bot
     print("Starting Telegram bot...")
-    threading.Thread(target=monitor_amount_of_available_acc, args=()).start()
-    application.run_polling(allowed_updates=Update.ALL_TYPES)
+    notifier = TelegramNotifier()
+    threading.Thread(target=monitor_amount_of_available_acc, args=(notifier,), daemon=True).start()
+    run_polling_forever(bot_token)
 
 if __name__ == "__main__":
     main()
diff --git a/app/cm_web_view.py b/app/cm_web_view.py
index 4d925c1..9020b78 100644
--- a/app/cm_web_view.py
+++ b/app/cm_web_view.py
@@ -9,7 +9,9 @@ CORS(app)
 # API base URL - use environment variable for Docker Compose
 import os
 API_BASE_URL = os.getenv('API_BASE_URL', 'http://localhost:3000')
+PREFIX_PATTERN = os.getenv('CM_PREFIX_PATTERN', '')
 print("API: ", API_BASE_URL)
+print("Prefix pattern: ", PREFIX_PATTERN)
 
 # Beautiful HTML template with modern styling
 HTML_TEMPLATE = """
@@ -379,6 +381,7 @@ HTML_TEMPLATE = """
     </div>
 
     <script>
+        const PREFIX_PATTERN = {{ prefix_pattern|tojson }};
         let currentTab = 'acc';
         let accData = [];
         let userData = [];
@@ -440,7 +443,7 @@ HTML_TEMPLATE = """
                 return;
             }
 
-            // Sort data with 13c prefix priority
+            // Sort data with configured prefix priority
             const sortedData = sortData([...accData], 'acc');
 
             const table = `
@@ -487,7 +490,7 @@ HTML_TEMPLATE = """
                 return;
             }
 
-            // Sort data with 13c prefix priority and by update time
+            // Sort data with configured prefix priority and by update time
             const sortedData = sortData([...userData], 'user');
 
             const table = `
@@ -544,15 +547,15 @@ HTML_TEMPLATE = """
         function sortData(data, type) {
             if (type === 'acc') {
                 return data.sort((a, b) => {
-                    // 13c prefix always on top
-                    const aIs13c = a.username && a.username.startsWith('13c');
-                    const bIs13c = b.username && b.username.startsWith('13c');
+                    // Configured prefix always on top
+                    const aIsPreferred = PREFIX_PATTERN && a.username && a.username.startsWith(PREFIX_PATTERN);
+                    const bIsPreferred = PREFIX_PATTERN && b.username && b.username.startsWith(PREFIX_PATTERN);
                     
-                    if (aIs13c && !bIs13c) return -1;
-                    if (!aIs13c && bIs13c) return 1;
+                    if (aIsPreferred && !bIsPreferred) return -1;
+                    if (!aIsPreferred && bIsPreferred) return 1;
                     
-                    // If both are 13c or both are not 13c, sort by username in descending order
-                    if (aIs13c && bIs13c) {
+                    // If both are preferred or both are not, sort by username in descending order
+                    if (aIsPreferred && bIsPreferred) {
                         return (b.username || '').localeCompare(a.username || '');
                     } else {
                         return (b.username || '').localeCompare(a.username || '');
@@ -560,12 +563,12 @@ HTML_TEMPLATE = """
                 });
             } else if (type === 'user') {
                 return data.sort((a, b) => {
-                    // 13c prefix always on top
-                    const aIs13c = a.f_username && a.f_username.startsWith('13c');
-                    const bIs13c = b.f_username && b.f_username.startsWith('13c');
+                    // Configured prefix always on top
+                    const aIsPreferred = PREFIX_PATTERN && a.f_username && a.f_username.startsWith(PREFIX_PATTERN);
+                    const bIsPreferred = PREFIX_PATTERN && b.f_username && b.f_username.startsWith(PREFIX_PATTERN);
                     
-                    if (aIs13c && !bIs13c) return -1;
-                    if (!aIs13c && bIs13c) return 1;
+                    if (aIsPreferred && !bIsPreferred) return -1;
+                    if (!aIsPreferred && bIsPreferred) return 1;
                     
                     // Then sort by last_update_time (newest first)
                     const aTime = new Date(a.last_update_time || 0);
@@ -702,7 +705,7 @@ HTML_TEMPLATE = """
 
 @app.route('/')
 def index():
-    return render_template_string(HTML_TEMPLATE)
+    return render_template_string(HTML_TEMPLATE, prefix_pattern=PREFIX_PATTERN)
 
 @app.route('/api/acc/')
 def proxy_acc():
@@ -742,4 +745,4 @@ if __name__ == '__main__':
     print("Starting CM Web View...")
     print("Web interface will be available at: http://localhost:8000")
     print("Make sure the API server is running on port 3000")
-    app.run(host='0.0.0.0', port=8000, debug=True)
\ No newline at end of file
+    app.run(host='0.0.0.0', port=8000, debug=True)
diff --git a/app/db.py b/app/db.py
index 1282245..2f08b3c 100644
--- a/app/db.py
+++ b/app/db.py
@@ -1,32 +1,53 @@
+import os
+import time
+
 import mysql.connector
 from mysql.connector import Error
 
+
+def _get_required_env(name: str) -> str:
+    value = os.getenv(name)
+    if value is None or value == "":
+        raise RuntimeError(f"Missing required environment variable: {name}")
+    return value
+
+
 class DB:
     def __init__(self):
         self.config = {
-            'host': '192.168.0.210',
-            'user': 'rex_cm',
-            'password': 'hengserver',
-            'database': 'rex_cm',
-            'port': 3306
+            'host': _get_required_env('DB_HOST'),
+            'user': _get_required_env('DB_USER'),
+            'password': _get_required_env('DB_PASSWORD'),
+            'database': _get_required_env('DB_NAME'),
+            'port': int(_get_required_env('DB_PORT')),
+            'connection_timeout': int(_get_required_env('DB_CONNECTION_TIMEOUT'))
         }
+        self.connect_retries = max(1, int(_get_required_env('DB_CONNECT_RETRIES')))
+        self.connect_retry_delay = float(_get_required_env('DB_CONNECT_RETRY_DELAY'))
         self.init_database()
     
     def get_connection(self):
         """Get MySQL database connection."""
-        try:
-            connection = mysql.connector.connect(**self.config)
-            return connection
-        except Error as e:
-            print(f"Error connecting to MySQL: {e}")
-            return None
+        for attempt in range(1, self.connect_retries + 1):
+            try:
+                connection = mysql.connector.connect(**self.config)
+                return connection
+            except Error as e:
+                print(f"Error connecting to MySQL: {e}")
+                if attempt < self.connect_retries:
+                    print(
+                        f"Retrying MySQL connection ({attempt}/{self.connect_retries}) "
+                        f"in {self.connect_retry_delay} seconds..."
+                    )
+                    time.sleep(self.connect_retry_delay)
+        return None
     
     def init_database(self):
         """Initialize the database connection."""
         connection = self.get_connection()
         if connection is None:
             raise Exception("Failed to connect to database")
-        
+        cursor = None
         try:
             cursor = connection.cursor()
             # Test connection by checking if required tables exist
@@ -44,8 +65,9 @@ class DB:
             print(f"Error verifying database: {e}")
             raise Exception(f"Database verification failed: {e}")
         finally:
-            if connection.is_connected():
+            if cursor is not None:
                 cursor.close()
+            if connection.is_connected():
                 connection.close()
     
     def query(self, query, params=None):
@@ -53,7 +75,7 @@ class DB:
         connection = self.get_connection()
         if connection is None:
             return []
-        
+        cursor = None
         try:
             cursor = connection.cursor(dictionary=True)
             
@@ -69,8 +91,9 @@ class DB:
             print(f"Error executing query: {e}")
             return []
         finally:
-            if connection.is_connected():
+            if cursor is not None:
                 cursor.close()
+            if connection.is_connected():
                 connection.close()
     
     def execute(self, query, params=None):
@@ -78,7 +101,7 @@ class DB:
         connection = self.get_connection()
         if connection is None:
             return False
-        
+        cursor = None
         try:
             cursor = connection.cursor()
             
@@ -94,6 +117,7 @@ class DB:
             print(f"Error executing query: {e}")
             return False
         finally:
-            if connection.is_connected():
+            if cursor is not None:
                 cursor.close()
-                connection.close()
\ No newline at end of file
+            if connection.is_connected():
+                connection.close()
diff --git a/app/telegram_notifier.py b/app/telegram_notifier.py
new file mode 100644
index 0000000..79c0de9
--- /dev/null
+++ b/app/telegram_notifier.py
@@ -0,0 +1,115 @@
+import logging
+import os
+from pathlib import Path
+from typing import Optional
+
+import requests
+
+
+logger = logging.getLogger(__name__)
+
+TELEGRAM_API_URL = "https://api.telegram.org"
+
+
+def _load_env_from_file() -> None:
+    """
+    Load key=value pairs from a .env-style file to populate os.environ.
+    Existing environment variables take precedence.
+    """
+    candidate_paths = []
+    env_file = os.getenv("ENV_FILE_PATH")
+    if env_file:
+        candidate_paths.append(Path(env_file))
+    candidate_paths.append(Path(__file__).resolve().parents[1] / ".env")
+    candidate_paths.append(Path.cwd() / ".env")
+
+    for path in candidate_paths:
+        if not path:
+            continue
+        if not path.exists() or not path.is_file():
+            continue
+
+        try:
+            with path.open("r") as env_file_handle:
+                for line in env_file_handle:
+                    stripped = line.strip()
+                    if not stripped or stripped.startswith("#") or "=" not in stripped:
+                        continue
+                    key, value = stripped.split("=", 1)
+                    key = key.strip()
+                    value = value.strip().strip('"').strip("'")
+                    if key and key not in os.environ:
+                        os.environ[key] = value
+        except OSError as exc:
+            logger.warning("Unable to load env file %s: %s", path, exc)
+
+
+_load_env_from_file()
+
+
+def get_telegram_bot_token() -> str:
+    """
+    Fetch the Telegram bot token from the TELEGRAM_BOT_TOKEN environment variable.
+    Raises RuntimeError if missing so the application fails fast during startup.
+    """
+    token = os.getenv("TELEGRAM_BOT_TOKEN")
+    if not token:
+        _load_env_from_file()
+        token = os.getenv("TELEGRAM_BOT_TOKEN")
+    if not token:
+        raise RuntimeError("Missing TELEGRAM_BOT_TOKEN environment variable")
+    return token
+
+
+class TelegramNotifier:
+    """
+    Utility wrapper to send proactive notifications to a dedicated Telegram chat.
+    Requires TELEGRAM_ALERT_CHAT_ID and TELEGRAM_ALERT_BOT_TOKEN (or TELEGRAM_BOT_TOKEN) env vars.
+    """
+
+    def __init__(self):
+        self.chat_id = os.getenv("TELEGRAM_ALERT_CHAT_ID")
+        self.bot_token = os.getenv("TELEGRAM_ALERT_BOT_TOKEN") or os.getenv("TELEGRAM_BOT_TOKEN")
+        if not self.chat_id:
+            logger.warning(
+                "TELEGRAM_ALERT_CHAT_ID environment variable missing; skipping Telegram notification setup"
+            )
+        if not self.bot_token:
+            logger.warning(
+                "TELEGRAM_ALERT_BOT_TOKEN/TELEGRAM_BOT_TOKEN env var missing; skipping Telegram notification setup"
+            )
+
+    def _can_notify(self) -> bool:
+        return bool(self.chat_id and self.bot_token)
+
+    def _send_message(self, text: str, parse_mode: Optional[str] = None) -> None:
+        if not self._can_notify():
+            logger.warning(
+                "Skipping Telegram notification: bot_token/chat_id not configured. Message: %s",
+                text,
+            )
+            return
+
+        url = f"{TELEGRAM_API_URL}/bot{self.bot_token}/sendMessage"
+        payload = {"chat_id": self.chat_id, "text": text}
+        if parse_mode:
+            payload["parse_mode"] = parse_mode
+
+        try:
+            response = requests.post(url, json=payload, timeout=10)
+            if response.status_code != 200:
+                logger.error(
+                    "Failed to send Telegram notification. Status: %s Body: %s",
+                    response.status_code,
+                    response.text,
+                )
+        except requests.RequestException as exc:
+            logger.exception("Error sending Telegram notification: %s", exc)
+
+    def notify_login_failure(self, details: str) -> None:
+        message = f"⚠️ CM Telegram Bot login issue detected.\nDetails: {details}\nAutomatic account creation paused until the next retry window."
+        self._send_message(message)
+
+    def notify_generic_error(self, details: str) -> None:
+        message = f"⚠️ CM Telegram Bot encountered an issue:\n{details}"
+        self._send_message(message)
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index 7cbe8e6..456f99e 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -23,7 +23,7 @@ services:
       dockerfile: docker/transfer/Dockerfile
     image: "${CM_IMAGE_PREFIX:-local}/cm-transfer:${DOCKER_IMAGE_TAG:-dev}"
     environment:
-      - API_BASE_URL=http://api-server:3000
-      - CM_TRANSFER_MAX_THREADS=1
+      API_BASE_URL: http://api-server:3000
+      CM_TRANSFER_MAX_THREADS: "1"
     mem_limit: 2g
     cpus: 2
diff --git a/docker-compose.yml b/docker-compose.yml
index 815dc8c..4febd59 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,71 +2,110 @@ services:
   # Telegram Bot Service
   telegram-bot:
     image: "${CM_IMAGE_PREFIX:-your-registry/namespace}/cm-telegram:${DOCKER_IMAGE_TAG:-latest}"
-    container_name: cm-telegram-bot
+    container_name: ${CM_DEPLOY_NAME:-cm}-telegram-bot
     restart: unless-stopped
     environment:
-      - PYTHONUNBUFFERED=1
+      PYTHONUNBUFFERED: "1"
+      TELEGRAM_BOT_TOKEN: ${TELEGRAM_BOT_TOKEN}
+      TELEGRAM_ALERT_CHAT_ID: ${TELEGRAM_ALERT_CHAT_ID:-}
+      TELEGRAM_ALERT_BOT_TOKEN: ${TELEGRAM_ALERT_BOT_TOKEN:-}
+      CM_PREFIX_PATTERN: ${CM_PREFIX_PATTERN}
+      CM_AGENT_ID: ${CM_AGENT_ID}
+      CM_AGENT_PASSWORD: ${CM_AGENT_PASSWORD}
+      CM_SECURITY_PIN: ${CM_SECURITY_PIN}
+      CM_BOT_BASE_URL: ${CM_BOT_BASE_URL}
+      DB_HOST: ${DB_HOST}
+      DB_USER: ${DB_USER}
+      DB_PASSWORD: ${DB_PASSWORD}
+      DB_NAME: ${DB_NAME}
+      DB_PORT: ${DB_PORT}
+      DB_CONNECTION_TIMEOUT: ${DB_CONNECTION_TIMEOUT}
+      DB_CONNECT_RETRIES: ${DB_CONNECT_RETRIES}
+      DB_CONNECT_RETRY_DELAY: ${DB_CONNECT_RETRY_DELAY}
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     networks:
-      - cm-network
+      - bot-network
     depends_on:
       - api-server
 
   # API Server Service
   api-server:
     image: "${CM_IMAGE_PREFIX:-your-registry/namespace}/cm-api:${DOCKER_IMAGE_TAG:-latest}"
-    container_name: cm-api-server
+    container_name: ${CM_DEPLOY_NAME:-cm}-api-server
     restart: unless-stopped
     ports:
-      - "3000:3000"
+      - "3000"
     environment:
-      - PYTHONUNBUFFERED=1
+      PYTHONUNBUFFERED: "1"
+      DB_HOST: ${DB_HOST}
+      DB_USER: ${DB_USER}
+      DB_PASSWORD: ${DB_PASSWORD}
+      DB_NAME: ${DB_NAME}
+      DB_PORT: ${DB_PORT}
+      DB_CONNECTION_TIMEOUT: ${DB_CONNECTION_TIMEOUT}
+      DB_CONNECT_RETRIES: ${DB_CONNECT_RETRIES}
+      DB_CONNECT_RETRY_DELAY: ${DB_CONNECT_RETRY_DELAY}
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     networks:
-      - cm-network
+      - bot-network
 
   # Web View Service
   web-view:
     image: "${CM_IMAGE_PREFIX:-your-registry/namespace}/cm-web:${DOCKER_IMAGE_TAG:-latest}"
-    container_name: cm-web-view
+    container_name: ${CM_DEPLOY_NAME:-cm}-web-view
     restart: unless-stopped
     ports:
-      - "8001:8000"
+      - "${CM_WEB_HOST_PORT:-8001}:8000"
     environment:
-      - PYTHONUNBUFFERED=1
-      - API_BASE_URL=http://api-server:3000
+      PYTHONUNBUFFERED: "1"
+      API_BASE_URL: http://api-server:3000
+      CM_PREFIX_PATTERN: ${CM_PREFIX_PATTERN}
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     networks:
-      - cm-network
+      - bot-network
     depends_on:
       - api-server
 
   transfer-bot:
     image: "${CM_IMAGE_PREFIX:-your-registry/namespace}/cm-transfer:${DOCKER_IMAGE_TAG:-latest}"
-    container_name: cm-transfer-bot
+    container_name: ${CM_DEPLOY_NAME:-cm}-transfer-bot
     restart: unless-stopped
     environment:
-      - PYTHONUNBUFFERED=1
-      - API_BASE_URL=http://api-server:3000
-      - CM_TRANSFER_MAX_THREADS=20
+      PYTHONUNBUFFERED: "1"
+      API_BASE_URL: http://api-server:3000
+      CM_TRANSFER_MAX_THREADS: "20"
+      CM_PREFIX_PATTERN: ${CM_PREFIX_PATTERN}
+      CM_AGENT_ID: ${CM_AGENT_ID}
+      CM_AGENT_PASSWORD: ${CM_AGENT_PASSWORD}
+      CM_SECURITY_PIN: ${CM_SECURITY_PIN}
+      CM_BOT_BASE_URL: ${CM_BOT_BASE_URL}
+      DB_HOST: ${DB_HOST}
+      DB_USER: ${DB_USER}
+      DB_PASSWORD: ${DB_PASSWORD}
+      DB_NAME: ${DB_NAME}
+      DB_PORT: ${DB_PORT}
+      DB_CONNECTION_TIMEOUT: ${DB_CONNECTION_TIMEOUT}
+      DB_CONNECT_RETRIES: ${DB_CONNECT_RETRIES}
+      DB_CONNECT_RETRY_DELAY: ${DB_CONNECT_RETRY_DELAY}
     volumes:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     mem_limit: 6g
     cpus: 2
     networks:
-      - cm-network
+      - bot-network
     depends_on:
       - api-server
       - web-view
 
 
 networks:
-  cm-network:
+  bot-network:
+    name: ${CM_DEPLOY_NAME:-cm}-network
     driver: bridge
diff --git a/envs/rex/.env b/envs/rex/.env
new file mode 100644
index 0000000..7825c36
--- /dev/null
+++ b/envs/rex/.env
@@ -0,0 +1,28 @@
+# === Deployment Identity ===
+CM_DEPLOY_NAME=rex-cm
+CM_WEB_HOST_PORT=8001
+
+# === Docker Registry ===
+CM_IMAGE_PREFIX=gitea.04080616.xyz/yiekheng
+DOCKER_IMAGE_TAG=latest
+
+# === Telegram ===
+TELEGRAM_BOT_TOKEN=5315819168:AAH31xwNgPdnk123x97XalmTW6fQV5EUCFU
+TELEGRAM_ALERT_CHAT_ID=818380985
+
+# === Database ===
+DB_HOST=192.168.0.210
+DB_USER=rex_cm
+DB_PASSWORD=hengserver
+DB_NAME=rex_cm
+DB_PORT=3306
+DB_CONNECTION_TIMEOUT=8
+DB_CONNECT_RETRIES=5
+DB_CONNECT_RETRY_DELAY=2
+
+# === Bot Config ===
+CM_PREFIX_PATTERN=13c
+CM_AGENT_ID=cm13a3
+CM_AGENT_PASSWORD=Sky533535
+CM_SECURITY_PIN=Sky533535
+CM_BOT_BASE_URL=https://cm99.net
diff --git a/envs/siong/.env b/envs/siong/.env
new file mode 100644
index 0000000..299678f
--- /dev/null
+++ b/envs/siong/.env
@@ -0,0 +1,28 @@
+# === Deployment Identity ===
+CM_DEPLOY_NAME=siong-cm
+CM_WEB_HOST_PORT=8005
+
+# === Docker Registry ===
+CM_IMAGE_PREFIX=gitea.04080616.xyz/yiekheng
+DOCKER_IMAGE_TAG=latest
+
+# === Telegram ===
+TELEGRAM_BOT_TOKEN=7028479329:AAH_UTPoYcaB0iZMXJjO7pKYxyub8ZSXn2E
+TELEGRAM_ALERT_CHAT_ID=818380985
+
+# === Database ===
+DB_HOST=192.168.0.210
+DB_USER=siong_cm
+DB_PASSWORD=hengserver
+DB_NAME=siong_cm
+DB_PORT=3306
+DB_CONNECTION_TIMEOUT=8
+DB_CONNECT_RETRIES=5
+DB_CONNECT_RETRY_DELAY=2
+
+# === Bot Config ===
+CM_PREFIX_PATTERN=13sa
+CM_AGENT_ID=cm13a39
+CM_AGENT_PASSWORD=Wenwen12345
+CM_SECURITY_PIN=Wenwen12345
+CM_BOT_BASE_URL=https://cm99.net