removed bunch of old code, added /init bunch of cleanups

gateway/auth/__init__.py

@@ -10,17 +10,17 @@ Add a new service (Plex, Seerr, etc.) by:
 from __future__ import annotations
 
 from abc import ABC, abstractmethod
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Optional
 
 
 # ---------------------------------------------------------------------------
-# AuthResult — returned by AuthService.authenticate()
+# AuthResult — returned by AuthService authentication
 # ---------------------------------------------------------------------------
 
 @dataclass
 class AuthResult:
-    """Outcome of a credential validation attempt."""
+    """Outcome of an authentication attempt."""
     success: bool
     external_user_id: Optional[str] = None
     external_name: Optional[str] = None
@@ -38,8 +38,6 @@ class AuthService(ABC):
     Subclasses must implement:
       - name          : unique identifier used in URLs and DB keys
       - display_name  : human-readable label shown in Discord
-      - render_login_form(token, discord_id) → HTML string
-      - authenticate(form_data) → AuthResult
     """
 
     @property
@@ -54,22 +52,6 @@ class AuthService(ABC):
         """Human-readable: "Jellyfin", "Seerr", "Plex" """
         ...
 
-    @abstractmethod
-    def render_login_form(self, token: str, discord_id: int) -> str:
-        """Return HTML string with a login form for this service.
-
-        The form MUST include these hidden fields:
-          <input type="hidden" name="token" value="{token}">
-          <input type="hidden" name="discord_id" value="{discord_id}">
-          <input type="hidden" name="service" value="{self.name}">
-        """
-        ...
-
-    @abstractmethod
-    async def authenticate(self, form_data: dict) -> AuthResult:
-        """Validate credentials against the service. Return AuthResult."""
-        ...
-
 
 # ---------------------------------------------------------------------------
 # Global registry