feat: Gitea file tree visible in sidebar on ALL pages

- base.html Alpine: added giteaWorkspace, giteaOwner, giteaRepo data
- loadGiteaTree() fetches /api/gitea/.../tree and renders in sidebar
- board._sidebar_data returns gitea_owner/gitea_repo
- dashboard._sidebar_data returns gitea_owner/gitea_repo
- alpine:initialized triggers loadGiteaTree on every page load

app/routers/board.py

@@ -366,6 +366,8 @@ def _sidebar_data(request: Request, owner: str = "", repo: str = "") -> dict:
             "workspace_key": f"{gitea_owner}/{gitea_repo}" if gitea_workspace else ws_key,
             "workspace_pages": workspace_pages,
             "gitea_workspace": gitea_workspace,
+            "gitea_owner": gitea_owner,
+            "gitea_repo": gitea_repo,
             "local_ws_id": local_ws_id,
             "current_page": repo or "Dashboard", "last_edited": "now",
             "recent_pages": recent, "private_pages": private_items,

app/routers/dashboard.py

@@ -150,9 +150,11 @@ def _sidebar_data(request: Request, repos: list[dict]) -> dict:
         "workspace_name": ws, "workspace_initial": initial,
         "active_ws_name": active_ws_name,
         "workspace_key": f"{gitea_owner}/{gitea_repo}" if gitea_workspace else "",
+        "gitea_workspace": gitea_workspace,
+        "gitea_owner": gitea_owner,
+        "gitea_repo": gitea_repo,
         "local_ws_id": local_ws_id,
         "workspace_pages": workspace_pages,
-        "gitea_workspace": gitea_workspace,
         "current_page": "Dashboard", "last_edited": "now",
         "recent_pages": recent_pages,
         "private_pages": private_pages,