Initial commit: Telegram Web Client with bot chat sync

- Backend: FastAPI + Telethon v2 WebSocket server
- Frontend: React + TypeScript + Vite + Zustand
- Features: Phone auth, 2FA, real-time bot chat
- Fix: Use chats= instead of from_users= to sync messages from all devices
- Config: BOT_USERNAME=AnvilForgeBot

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/models/__init__.py

@@ -0,0 +1 @@
+# Models module

backend/models/schemas.py

@@ -0,0 +1,42 @@
+from pydantic import BaseModel
+from typing import Optional, List
+from datetime import datetime
+
+
+class PhoneAuthRequest(BaseModel):
+    phone: str
+
+
+class CodeAuthRequest(BaseModel):
+    phone: str
+    code: str
+    phone_code_hash: str
+
+
+class PasswordAuthRequest(BaseModel):
+    phone: str
+    password: str
+
+
+class SendMessageRequest(BaseModel):
+    text: str
+
+
+class MessageResponse(BaseModel):
+    id: int
+    text: Optional[str]
+    date: datetime
+    is_outgoing: bool
+    sender_name: Optional[str] = None
+
+
+class AuthStatus(BaseModel):
+    authenticated: bool
+    phone: Optional[str] = None
+    user_id: Optional[int] = None
+    username: Optional[str] = None
+
+
+class WebSocketMessage(BaseModel):
+    type: str  # "auth_phone", "auth_code", "auth_password", "send_message", "get_history"
+    data: dict