v2.8.0 WIP: create/upload files + commit history + labels sync

- POST /api/gitea/projects/{owner}/{repo}/upload (binary upload)
- get_file_commits() in GiteaClient
- GET /api/gitea/projects/{owner}/{repo}/commits (per-file history)
- POST .../sync-labels (Gitea labels → FlowDeck tags)
- New file form + upload button in gitea_workspace.html topbar

app/config.py

@@ -18,8 +18,8 @@ class Settings(BaseSettings):
     gitea_webhook_secret: str = ""
 
     # GitHub
-    github_client_id: str = ""
-    github_client_secret: str = ""
+    github_oauth_client_id: str = ""
+    github_oauth_client_secret: str = ""
 
     # Standalone mode
     standalone: bool = False  # FLOWDECK_STANDALONE=true in .env