Q‑Blog v0.3.1 — Image Preview Fix

Summary

- Builder posts: Clicking an image now opens the full‑window lightbox, matching minimal posts.
- UX: Press Escape or click the dark backdrop to close the preview.

Technical Notes

- Added robust click handling for images inside builder/grid layouts and hardened modal open/close to prevent accidental immediate dismissal.
- No breaking changes; no API changes.

Upgrade Notes

- No action required. Existing posts automatically benefit from the fix.