## 1. Permalink Modal Regression Fixes

- [x] 1.1 Fix deep-link modal open path for hero targets so modal structure and image loading match feed behavior.
- [x] 1.2 Restore `Escape` close behavior for permalink-opened modal state.
- [x] 1.3 Ensure invalid permalink handling does not break page interaction.

## 2. Share and Contact Fixes

- [x] 2.1 Fix light-mode social icon contrast tokens for X/WhatsApp/LinkedIn controls.
- [x] 2.2 Add copy-to-clipboard share action for article permalink.
- [x] 2.3 Restore footer contact email rendering from `/config` payload when `CONTACT_EMAIL` is set.

## 3. Header/Footer Usability Fixes

- [x] 3.1 Replace inline back-to-top text control with floating island control.
- [x] 3.2 Make footer sticky and compact while preserving content readability.
- [x] 3.3 Make header sticky with subtle shrink, elevation, and glass effect on scroll.

## 4. Content Relevance and Card Cleanup

- [x] 4.1 Add finance-story image relevance guardrails to avoid unrelated image classes.
- [x] 4.2 Add finance-safe query retry/fallback refinement path.
- [x] 4.3 Remove redundant card-level "Link" affordance from feed cards.

## 5. Verification

- [x] 5.1 Verify hero permalink opens modal with correct image and closing behavior.
- [x] 5.2 Verify footer email presence and share icon visibility in light/dark themes.
- [x] 5.3 Verify floating back-to-top, sticky footer, and sticky shrinking header on desktop/mobile.
- [x] 5.4 Verify finance-story image relevance behavior and fallback safety.