feat: add bio-bait spam detection with profile bio scanning

.env.example

@@ -58,11 +58,29 @@ DUPLICATE_SPAM_MIN_LENGTH=20
 # 0.95 catches minor edits, 0.97 only near-exact copies, 0.90 is more aggressive
 DUPLICATE_SPAM_SIMILARITY=0.95
 
+# Enable/disable bio bait detection (true/false)
+BIO_BAIT_ENABLED=true
+
+# Monitor-only mode for bio bait detection (true/false)
+# When true: no delete/restrict/warning-topic notification, only metrics + owner alert
+BIO_BAIT_MONITOR_ONLY=false
+
+# Owner/admin chat ID to receive bio bait monitor alerts (optional)
+# Example: 57747812
+# BIO_BAIT_ALERT_CHAT_ID=57747812
+
 # Path to groups.json for multi-group support (optional)
 # If this file exists, per-group settings are loaded from it instead of the
 # GROUP_ID/WARNING_TOPIC_ID/etc. fields above. See groups.json.example.
 # GROUPS_CONFIG_PATH=groups.json
 
+# Default plugin enable/disable map for all groups (optional, single-group mode)
+# JSON object mapping built-in plugin names to booleans.
+# Plugins not listed inherit their built-in default (enabled).
+# Keys must match known plugin names (e.g. "captcha", "dm", "verify").
+# Example: PLUGINS_DEFAULT={"captcha":true,"dm":false}
+# PLUGINS_DEFAULT={"captcha":true,"dm":false}
+
 # Logfire Configuration (optional - for production logging)
 # Get your token from https://logfire.pydantic.dev
 LOGFIRE_TOKEN=your_logfire_token_here

.gitignore

@@ -10,3 +10,7 @@ __pycache__/
 data/
 .vscode
 # AGENTS.md
+.worktrees/
+
+# Agent/planning docs
+docs/

AGENTS.md

@@ -212,3 +212,7 @@ if user.id not in admin_ids:
 - Captcha callback data encodes group_id: `captcha_verify_{group_id}_{user_id}` to avoid ambiguity
 - Scheduler iterates all groups with per-group exception isolation
 - DM handler scans all groups in registry for user membership and unrestriction
+
+## Policy
+
+- Never mention AI usage, code generation tools, or automated assistance in commit messages, PR descriptions, code comments, or documentation

groups.json.example

@@ -15,7 +15,15 @@
     "duplicate_spam_window_seconds": 120,
     "duplicate_spam_threshold": 2,
     "duplicate_spam_min_length": 20,
-    "duplicate_spam_similarity": 0.95
+    "duplicate_spam_similarity": 0.95,
+    "bio_bait_enabled": true,
+    "bio_bait_monitor_only": false,
+    "bio_bait_alert_chat_id": null,
+    "plugins": {
+      "captcha": false,
+      "dm": true,
+      "verify": true
+    }
   },
   {
     "group_id": -1009876543210,
@@ -33,6 +41,14 @@
     "duplicate_spam_window_seconds": 60,
     "duplicate_spam_threshold": 2,
     "duplicate_spam_min_length": 20,
-    "duplicate_spam_similarity": 0.90
+    "duplicate_spam_similarity": 0.90,
+    "bio_bait_enabled": true,
+    "bio_bait_monitor_only": false,
+    "bio_bait_alert_chat_id": null,
+    "plugins": {
+      "contact_spam": false,
+      "duplicate_spam": false,
+      "profile_monitor": true
+    }
   }
-]
+]

src/bot/config.py

@@ -6,17 +6,18 @@
 (production, staging) via the BOT_ENV environment variable.
 """
 
+import json
 import logging
 import os
 from datetime import timedelta
 from functools import lru_cache
 from pathlib import Path
 
+from pydantic import field_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 logger = logging.getLogger(__name__)
 
-
 def get_env_file() -> str | None:
     """
     Determine which .env file to load based on BOT_ENV environment variable.
@@ -32,7 +33,7 @@ def get_env_file() -> str | None:
         "staging": ".env.staging",
     }
     env_file = env_files.get(env, ".env")
-    
+
     # Return path only if file exists, otherwise return None
     # Pydantic will load from environment variables if no .env file
     if Path(env_file).exists():
@@ -42,7 +43,6 @@ def get_env_file() -> str | None:
         logger.debug(f"No .env file found at {env_file}, loading from environment variables")
         return None
 
-
 class Settings(BaseSettings):
     """
     Application settings loaded from environment variables.
@@ -85,19 +85,45 @@ class Settings(BaseSettings):
     duplicate_spam_threshold: int = 2
     duplicate_spam_min_length: int = 20
     duplicate_spam_similarity: float = 0.95
+    bio_bait_enabled: bool = True
+    bio_bait_monitor_only: bool = False
+    bio_bait_alert_chat_id: int | None = None
     groups_config_path: str = "groups.json"
     logfire_token: str | None = None
     logfire_service_name: str = "pythonid-bot"
     logfire_environment: str = "production"
     logfire_enabled: bool = True
     log_level: str = "INFO"
+    plugins_default: dict[str, bool] = {}
 
     model_config = SettingsConfigDict(
         env_file=get_env_file(),
         env_file_encoding="utf-8",
         extra="ignore",
     )
 
+    @field_validator("plugins_default", mode="before")
+    @classmethod
+    def parse_and_validate_plugins_default(cls, v: object) -> dict[str, bool]:
+        """Parse PLUGINS_DEFAULT env var as JSON object and validate keys/values."""
+        if isinstance(v, dict):
+            parsed = v
+        elif isinstance(v, str):
+            if not v.strip():
+                return {}
+            try:
+                parsed = json.loads(v)
+            except json.JSONDecodeError:
+                raise ValueError("PLUGINS_DEFAULT must be a valid JSON string")
+            if not isinstance(parsed, dict):
+                raise ValueError("PLUGINS_DEFAULT must be a JSON object")
+        elif isinstance(v, list):
+            raise ValueError("PLUGINS_DEFAULT must be a JSON object, got array")
+        else:
+            return {}
+        from bot.plugins.config import validate_plugin_map
+        return validate_plugin_map(parsed)
+
     def model_post_init(self, __context):
         """Validate and log non-sensitive configuration values after initialization."""
         if self.group_id >= 0:
@@ -115,7 +141,7 @@ def model_post_init(self, __context):
         env = os.getenv("BOT_ENV", "production")
         if self.logfire_environment == "production" and env == "staging":
             self.logfire_environment = "staging"
-        
+
         logger.info("Configuration loaded successfully")
         logger.debug(f"group_id: {self.group_id}")
         logger.debug(f"warning_topic_id: {self.warning_topic_id}")
@@ -127,9 +153,13 @@ def model_post_init(self, __context):
         logger.debug(f"captcha_timeout_seconds: {self.captcha_timeout_seconds}")
         logger.debug(f"new_user_probation_hours: {self.new_user_probation_hours}")
         logger.debug(f"new_user_violation_threshold: {self.new_user_violation_threshold}")
+        logger.debug(f"bio_bait_enabled: {self.bio_bait_enabled}")
+        logger.debug(f"bio_bait_monitor_only: {self.bio_bait_monitor_only}")
+        logger.debug(f"bio_bait_alert_chat_id: {self.bio_bait_alert_chat_id}")
         logger.debug(f"telegram_bot_token: {'***' + self.telegram_bot_token[-4:]}")  # Mask sensitive token
         logger.debug(f"logfire_enabled: {self.logfire_enabled}")
         logger.debug(f"logfire_environment: {self.logfire_environment}")
+        logger.debug(f"plugins_default: {self.plugins_default}")
 
     @property
     def probation_timedelta(self) -> timedelta:
@@ -143,7 +173,6 @@ def warning_time_threshold_timedelta(self) -> timedelta:
     def captcha_timeout_timedelta(self) -> timedelta:
         return timedelta(seconds=self.captcha_timeout_seconds)
 
-
 @lru_cache
 def get_settings() -> Settings:
     """

src/bot/constants.py

@@ -278,6 +278,51 @@ def format_hours_display(hours: int) -> str:
     "📌 [Peraturan Grup]({rules_link})"
 )
 
+# Bio bait spam notification (e.g. "cek bio aku" / "lihat byoh")
+BIO_BAIT_SPAM_NOTIFICATION = (
+    "🚫 *Spam Bio Bait Terdeteksi*\n\n"
+    "Pesan dari {user_mention} telah dihapus karena berisi ajakan "
+    "untuk mengecek bio/profil, pola yang umum dipakai untuk spam/promosi/scam.\n\n"
+    "Pengguna telah dibatasi.\n\n"
+    "📌 [Peraturan Grup]({rules_link})"
+)
+
+BIO_BAIT_SPAM_NOTIFICATION_NO_RESTRICT = (
+    "🚫 *Spam Bio Bait Terdeteksi*\n\n"
+    "Pesan dari {user_mention} telah dihapus karena berisi ajakan "
+    "untuk mengecek bio/profil, pola yang umum dipakai untuk spam/promosi/scam.\n\n"
+    "📌 [Peraturan Grup]({rules_link})"
+)
+
+# Bio profile link spam (user's profile bio contains promo/scam links)
+BIO_LINK_SPAM_NOTIFICATION = (
+    "🚫 *Spam Bio Profil Terdeteksi*\n\n"
+    "Pesan dari {user_mention} telah dihapus karena akun ini memiliki "
+    "bio profil dengan tautan/mention Telegram mencurigakan.\n\n"
+    "Pengguna telah dibatasi.\n\n"
+    "📌 [Peraturan Grup]({rules_link})"
+)
+
+BIO_LINK_SPAM_NOTIFICATION_NO_RESTRICT = (
+    "🚫 *Spam Bio Profil Terdeteksi*\n\n"
+    "Pesan dari {user_mention} telah dihapus karena akun ini memiliki "
+    "bio profil dengan tautan/mention Telegram mencurigakan.\n\n"
+    "📌 [Peraturan Grup]({rules_link})"
+)
+
+# Monitor-only alert for owner/admin chat when bio bait match is detected.
+# Sent without parse_mode to preserve raw message/bio content for forensic review.
+BIO_BAIT_MONITOR_ALERT = (
+    "[BIO BAIT MONITOR]\n"
+    "Reason: {reason}\n"
+    "Group ID: {group_id}\n"
+    "User ID: {user_id}\n"
+    "User: {user_name}\n"
+    "Username: {username}\n"
+    "Message:\n{message_text}\n\n"
+    "Profile Bio:\n{profile_bio}"
+)
+
 # Whitelisted URL domains for new user probation
 # These domains are allowed even during probation period
 # Matches exact domain or subdomains (e.g., "github.com" matches "www.github.com")

src/bot/group_config.py

@@ -17,7 +17,6 @@
 
 logger = logging.getLogger(__name__)
 
-
 class GroupConfig(BaseModel):
     """
     Per-group configuration settings.
@@ -41,6 +40,10 @@ class GroupConfig(BaseModel):
     duplicate_spam_threshold: int = 2
     duplicate_spam_min_length: int = 20
     duplicate_spam_similarity: float = 0.95
+    bio_bait_enabled: bool = True
+    bio_bait_monitor_only: bool = False
+    bio_bait_alert_chat_id: int | None = None
+    plugins: dict[str, bool] | None = None
 
     @field_validator("group_id")
     @classmethod
@@ -77,6 +80,17 @@ def probation_hours_must_be_non_negative(cls, v: int) -> int:
             raise ValueError("new_user_probation_hours must be >= 0")
         return v
 
+    @field_validator("plugins", mode="before")
+    @classmethod
+    def validate_plugins(cls, v: object) -> dict[str, bool] | None:
+        from bot.plugins.config import validate_plugin_map
+
+        if v is None:
+            return None
+        if not isinstance(v, dict):
+            raise ValueError("plugins must be a dict or None")
+        return validate_plugin_map(v)
+
     @property
     def probation_timedelta(self) -> timedelta:
         return timedelta(hours=self.new_user_probation_hours)
@@ -89,7 +103,6 @@ def warning_time_threshold_timedelta(self) -> timedelta:
     def captcha_timeout_timedelta(self) -> timedelta:
         return timedelta(seconds=self.captcha_timeout_seconds)
 
-
 class GroupRegistry:
     """
     Registry of monitored groups.
@@ -115,7 +128,6 @@ def all_groups(self) -> list[GroupConfig]:
     def is_monitored(self, group_id: int) -> bool:
         return group_id in self._groups
 
-
 def load_groups_from_json(path: str) -> list[GroupConfig]:
     """
     Parse a groups.json file into a list of GroupConfig objects.
@@ -151,7 +163,6 @@ def load_groups_from_json(path: str) -> list[GroupConfig]:
 
     return configs
 
-
 def build_group_registry(settings: object) -> GroupRegistry:
     """
     Build a GroupRegistry from settings.
@@ -193,12 +204,15 @@ def build_group_registry(settings: object) -> GroupRegistry:
             duplicate_spam_threshold=settings.duplicate_spam_threshold,
             duplicate_spam_min_length=settings.duplicate_spam_min_length,
             duplicate_spam_similarity=settings.duplicate_spam_similarity,
+            bio_bait_enabled=getattr(settings, "bio_bait_enabled", True),
+            bio_bait_monitor_only=getattr(settings, "bio_bait_monitor_only", False),
+            bio_bait_alert_chat_id=getattr(settings, "bio_bait_alert_chat_id", None),
+            plugins=getattr(settings, "plugins_default", None),
         )
         registry.register(config)
 
     return registry
 
-
 def get_group_config_for_update(update: Update) -> GroupConfig | None:
     """
     Get the GroupConfig for the group in the given Update.
@@ -219,11 +233,9 @@ def get_group_config_for_update(update: Update) -> GroupConfig | None:
         logger.error("Group registry not initialized; skipping update")
         return None
 
-
 # Module-level singleton
 _registry: GroupRegistry | None = None
 
-
 def init_group_registry(settings: object) -> GroupRegistry:
     """
     Initialize the global group registry singleton.
@@ -240,7 +252,6 @@ def init_group_registry(settings: object) -> GroupRegistry:
     _registry = build_group_registry(settings)
     return _registry
 
-
 def get_group_registry() -> GroupRegistry:
     """
     Get the global group registry singleton.
@@ -255,7 +266,6 @@ def get_group_registry() -> GroupRegistry:
         raise RuntimeError("Group registry not initialized. Call init_group_registry() first.")
     return _registry
 
-
 def reset_group_registry() -> None:
     """Reset the group registry singleton (for testing)."""
     global _registry