GiteaClient:
- __init__(user_token=None) — per-user OAuth token ou admin token
- get_repo_contents(owner, repo, path) — lazy: un niveau à la fois
- get_file_content(owner, repo, path) — base64 décodé
- create_or_update_file(...) — PUT avec sha pour update
- delete_file(owner, repo, path, sha, message)
- _invalidate_tree_cache() — invalidation après write
Routes (/api/gitea):
- GET /orgs — liste des organisations
- GET /projects?org=x — repos user ou org
- GET /projects/{owner}/{repo}/tree?path=x — arborescence lazy
- GET /projects/{owner}/{repo}/file?path=x — contenu fichier
- PUT /projects/{owner}/{repo}/file — save + commit
- DELETE /projects/{owner}/{repo}/file?path=x&sha=x — delete
- GET /projects/{owner}/{repo}/labels — labels → tags
Helper: get_user_gitea_client(request) → GiteaClient ou None