fix(ci): replace nonexistent gitea-issue-create action with curl API call

The `actions/gitea-issue-create@v1` action does not exist on GitHub,
causing the docs-drift workflow to fail at clone time. Replace it with
a direct call to the Gitea REST API using curl. Also corrects the label
from `documentation` to `Kind/Documentation`.

.gitea/workflows/docs-drift.yml

@@ -27,19 +27,19 @@ jobs:
 
       - name: Open drift reminder issue
         if: steps.drift.outputs.synced == 'false'
-        uses: actions/gitea-issue-create@v1
-        with:
-          token: ${{ secrets.GITEA_TOKEN }}
-          title: "docs: README updated — review docs/fish-config.md for drift"
-          body: |
-            README.md was modified in commit ${{ github.sha }} but
-            `docs/fish-config.md` (the offline manual) was not updated in
-            the same push.
-
-            Please review the README diff and update the offline documentation
-            if any functions, keybindings, abbreviations, or configuration
-            options were added, removed, or changed.
-
-            Commit: ${{ github.sha }}
-            Branch: ${{ github.ref_name }}
-          labels: documentation
+        env:
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+          SERVER_URL: ${{ github.server_url }}
+          REPO: ${{ github.repository }}
+          SHA: ${{ github.sha }}
+          BRANCH: ${{ github.ref_name }}
+        run: |
+          curl -s -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            "${SERVER_URL}/api/v1/repos/${REPO}/issues" \
+            -d "{
+              \"title\": \"docs: README updated — review docs/fish-config.md for drift\",
+              \"body\": \"README.md was modified in commit ${SHA} but \`docs/fish-config.md\` (the offline manual) was not updated in the same push.\n\nPlease review the README diff and update the offline documentation if any functions, keybindings, abbreviations, or configuration options were added, removed, or changed.\n\nCommit: ${SHA}\nBranch: ${BRANCH}\",
+              \"labels\": [\"Kind/Documentation\"]
+            }"