fix: Discord token priority — settings before state file

load_token() was checking the state file before settings.discord_token,
so a stale fake token in discord_state.json would block the real token
from .env/DISCORD_TOKEN. Flipped the priority: env config first, state
file as fallback for tokens set via /discord/setup UI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/integrations/chat_bridge/vendors/discord.py

@@ -297,7 +297,21 @@ class DiscordVendor(ChatPlatform):
             logger.error("Failed to save Discord token: %s", exc)
 
     def load_token(self) -> str | None:
-        """Load token from state file or config."""
+        """Load token from config or state file.
+
+        Priority: settings.discord_token (env/.env) > state file.
+        The state file is a fallback for tokens set via the /discord/setup UI.
+        """
+        # 1. Config / env var takes priority
+        try:
+            from config import settings
+
+            if settings.discord_token:
+                return settings.discord_token
+        except Exception:
+            pass
+
+        # 2. Fall back to state file (set via /discord/setup endpoint)
         try:
             if _STATE_FILE.exists():
                 data = json.loads(_STATE_FILE.read_text())
@@ -307,12 +321,7 @@ class DiscordVendor(ChatPlatform):
         except Exception as exc:
             logger.debug("Could not read discord state file: %s", exc)
 
-        try:
-            from config import settings
-
-            return settings.discord_token or None
-        except Exception:
-            return None
+        return None
 
     # ── OAuth2 URL generation ──────────────────────────────────────────────