Root causes of writing getting stuck:
1. Model returns empty response for a section → now detected early with
actionable error message including model name
2. Model responds but without ~~~ARTICLE~~~ divider (happens with fallback
models like Gemini) → now treats entire response as markdown content
3. Stream ends without 'complete' event (error/exit in PHP) → JS timeline
entries lingered as 'active' forever. Now deactivated on stream close.
4. Error messages in execution flow now use structured formatAiErrorMessage
with retry button instead of raw text
Also: deactivateActiveTimelineEntries called in catch block so errors
properly clear the 'Writing section X' status indicator.
Session issues fixed:
- Removed auto-draft-only gate for showing unassigned sessions on new posts
(now shows on any post that has no linked sessions)
- Auto-link unassigned session to current post when user opens it
- Added beforeunload/pagehide flush to persist messages before page close
(prevents data loss from 700ms debounce not firing)
- Added warning log when session loads with 0 messages for debugging
UI fix:
- Override WP editor h3 shrinkage (11px/uppercase → 15px/normal/white)
- Fix h2/h4-h6 headings in response content for dark theme readability
Outline error messages:
- Separate empty response from parse failure with distinct actionable messages
- Show model name + token count on empty response for debugging
- Reassure user that parse failures are usually one-time issues
Phase 1 - UI Theme Consistency:
- Chat messages now use consistent dark theme (removed jarring white bg)
- Plan cards restyled with rounded borders, fills, colored status badges
- Timeline entries use humanist sans-serif instead of monospace
- Error messages now structured (icon + title + detail + action link)
- Input area unified with dark theme cohesion
Phase 2 - UX Flow:
- Added contextual placeholder text per agent mode in textarea
- Added visual mode indicator badge (Chat/Planning/Writing)
- Simplified welcome screen (single 'Continue' + collapsible history)
- Added slash command/mention discovery hint in empty input
- Added write confirmation when editor has existing content
- Added 30s streaming heartbeat (reassurance when model is slow)
Phase 3 - Error Handling:
- Added DB table health check on sidebar init
- Improved 'no API key' error with settings link
- Shows in-chat warning when provider fallback triggers
- Auto-fallback to registry fallback model on unavailability
- isLoading always resets via try/finally pattern
- Implement local backend AI provider with Ollama integration
- Add Brave Search API integration for real-time search suggestions
- Add image generation manager with multiple AI providers
- Create hybrid provider system with local/cloud fallback
- Add comprehensive settings UI with provider management
- Implement Gutenberg sidebar with writing assistance controls
- Add SEO schema generation for AI-generated content
- Multiple provider support: OpenRouter, local backend, Codex
