Chromium at 390×844 — Change delegate rendered, panel width 390px, all controls 44px high
Closes #895
## What changed
- adds an author-only, conflict-safe Gitea reassignment boundary for open Filed issues
- reuses the mobile issue sheet with a thumb-safe Change delegate flow and explicit old → new confirmation
- keeps the issue in Filed and updates the visible owner after upstream confirmation
## Verification
- `python3 -m pytest tests/ -q` — 1720 passed, 1 skipped
- Chromium at 390×844 — Change delegate rendered, panel width 390px, all controls 44px high
Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
Closes #895
What changed
Verification
python3 -m pytest tests/ -q— 1720 passed, 1 skipped