feat: Update CI/CD workflow to trigger separate backend and dashboard deployments; enhance deployment documentation with Nginx proxy details and OAuth callback URLs

README.md

@@ -92,6 +92,7 @@ This project uses the arc42 template. Chapters are in `docs/`.
 3. Copy these values for runtime config (`bot_settings`):
    - `DISCORD_TOKEN` from Bot tab (Reset Token if needed)
    - `DISCORD_CLIENT_ID` from OAuth2 > General
+   - `OAUTH_BRIDGE_REDIRECT_URI` as exact callback URL, recommended: `https://admin.openmicodyssey.com/oauth/discord/callback`
 4. In `Bot` > `Privileged Gateway Intents`, enable only:
    - `Server Members Intent` (required by current code)
 5. Keep these disabled unless code changes require them:
@@ -171,6 +172,16 @@ npm run dev
 
 Dashboard environment template: `admin-dashboard/.env.example`.
 
+Recommended production OAuth callback URL:
+
+- `https://admin.openmicodyssey.com/oauth/discord/callback`
+
+This same URL must match:
+
+- Discord OAuth2 redirect whitelist
+- `VITE_DISCORD_REDIRECT_URI`
+- `OAUTH_BRIDGE_REDIRECT_URI`
+
 ### Validation Commands
 
 ```bash