GRM-36: fix: use correct Gitea 1.26 wiki API endpoints

Updated sync_wiki.py to use correct Gitea 1.26 wiki API: POST /wiki/new for create, PATCH /wiki/page/{sub_url} for update, GET /wiki/pages returns sub_url. Tests updated to match.

Closes GRM-36

scripts/sync_wiki.py

@@ -6,6 +6,12 @@ map file paths to wiki page titles, and creates/updates wiki pages via the
 Gitea API.  Pages that exist in the wiki but not in the mapping are left
 untouched (not deleted).
 
+Gitea 1.26 wiki API endpoints:
+  - Create: POST /repos/{owner}/{repo}/wiki/new  {title, content, message}
+  - Update: PATCH /repos/{owner}/{repo}/wiki/page/{sub_url}  {title, content, message}
+  - List:   GET /repos/{owner}/{repo}/wiki/pages  → [{title, sub_url, ...}]
+  - Delete: DELETE /repos/{owner}/{repo}/wiki/page/{sub_url}
+
 Usage:
   REPO_TOKEN=<token> python3 scripts/sync_wiki.py [--dry-run] [--repo owner/repo]
 """
@@ -44,12 +50,12 @@ def read_doc_content(file_path: str) -> str:
 
 
 def list_wiki_pages(client: GiteaClient) -> dict[str, str]:
-    """List existing wiki pages, returning {title: page_name}."""
+    """List existing wiki pages, returning {title: sub_url}."""
     try:
         pages = client._request("GET", "/wiki/pages").json()
     except APIError:
         return {}
-    return {page.get("title", ""): page.get("page_name", page.get("title", "")) for page in pages}
+    return {page.get("title", ""): page.get("sub_url", page.get("title", "")) for page in pages}
 
 
 def sync_page(
@@ -68,19 +74,19 @@ def sync_page(
         return "skipped"
 
     if page_title in existing_pages:
-        # Update existing page
+        # Update existing page via PATCH
-        page_name = existing_pages[page_title]
+        sub_url = existing_pages[page_title]
         client._request(
-            "PUT",
+            "PATCH",
-            f"/wiki/page/{page_name}",
+            f"/wiki/page/{sub_url}",
-            json={"content": content, "message": f"Sync from docs/ — update {page_title}"},
+            json={"title": page_title, "content": content, "message": f"Sync from docs/ — update {page_title}"},
         )
         return "updated"
 
-    # Create new page
+    # Create new page via POST /wiki/new
     client._request(
         "POST",
-        "/wiki/page",
+        "/wiki/new",
         json={"title": page_title, "content": content, "message": f"Sync from docs/ — create {page_title}"},
     )
     return "created"

tests/unit/test_sync_wiki.py

@@ -57,11 +57,11 @@ class TestListWikiPages:
     def test_returns_page_dict(self) -> None:
         client = MagicMock()
         client._request.return_value.json.return_value = [
-            {"title": "Home", "page_name": "Home"},
+            {"title": "Home", "sub_url": "Home"},
-            {"title": "Getting-Started", "page_name": "Getting-Started"},
+            {"title": "Getting-Started", "sub_url": "Getting-Started.-"},
         ]
         result = list_wiki_pages(client)
-        assert result == {"Home": "Home", "Getting-Started": "Getting-Started"}
+        assert result == {"Home": "Home", "Getting-Started": "Getting-Started.-"}
 
 
 class TestSyncPage:
@@ -78,16 +78,17 @@ class TestSyncPage:
         client._request.assert_called_once()
         call_args = client._request.call_args
         assert call_args.args[0] == "POST"
-        assert call_args.args[1] == "/wiki/page"
+        assert call_args.args[1] == "/wiki/new"
 
     def test_updates_existing_page(self) -> None:
         client = MagicMock()
-        existing = {"Existing-Page": "Existing-Page"}
+        existing = {"Existing-Page": "Existing-Page.-"}
         result = sync_page(client, "Existing-Page", "# Updated", existing, dry_run=False)
         assert result == "updated"
         client._request.assert_called_once()
         call_args = client._request.call_args
-        assert call_args.args[0] == "PUT"
+        assert call_args.args[0] == "PATCH"
+        assert "/wiki/page/Existing-Page.-" in call_args.args[1]
 
 
 class TestMain: