Add AI writing assistant plugin with local backend, brave search, and image generation support

- 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

WRITING_MODE_EMPTY_STATE_FIX.md

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+# Writing Mode Empty State UX Fix
+
+**Date:** January 30, 2026  
+**Status:** Fixed  
+**Issue Type:** UX Improvement
+
+---
+
+## Problem Statement
+
+When users opened the sidebar in Writing mode without an outline, they encountered confusing UX:
+
+1. "No Outline Yet" message displayed
+2. Chat input remained visible
+3. Users thought they were stuck or could chat directly
+4. Potential cost waste from sending messages that wouldn't work
+
+### Root Cause
+
+The empty state component was displayed correctly, but the chat input area was not conditionally hidden. This created mixed signals.
+
+---
+
+## Solution Implemented
+
+### 1. Hide Chat Input When Empty State Shows
+
+**File:** `assets/js/sidebar.js:5550-5553`
+
+Added conditional rendering to hide context indicator and command input:
+
+```javascript
+// Hide when showing empty state
+!shouldShowWritingEmptyState() && renderContextIndicator(),
+!shouldShowWritingEmptyState() && wp.element.createElement('div', { className: 'wpaw-command-area'...
+```
+
+### 2. Improved Empty State Message
+
+**File:** `assets/js/sidebar.js:4350-4380`
+
+**Old:**
+- Title: "No Outline Yet"
+- Body: "Writing mode requires an outline to structure your article."
+
+**New:**
+- Title: "Create an Outline First"
+- Body: "Before writing, you need to create an outline to structure your article. This ensures better content organization and prevents wasted costs."
+- Tip: "Planning mode helps you brainstorm and structure your content before writing."
+
+---
+
+## Files Modified
+
+1. `assets/js/sidebar.js`
+   - Line 5550-5553: Added conditional rendering for context indicator and input area
+   - Line 4350-4380: Updated empty state message and removed Chat mode suggestion
+
+---
+
+## Result
+
+**Before:**
+- Empty state message + visible chat input = confusion
+- Users could type but messages wouldn't work
+- Unclear what action to take
+
+**After:**
+- Empty state message only
+- No chat input visible
+- Clear single action: "Switch to Planning Mode"
+- Explains why outline is needed
+- Prevents wasted API calls
+
+---
+
+## Testing Checklist
+
+- [ ] Open new post in Writing mode (no outline)
+- [ ] Verify empty state shows
+- [ ] Verify chat input is hidden
+- [ ] Click "Switch to Planning Mode" button
+- [ ] Verify mode switches to Planning
+- [ ] Create outline
+- [ ] Switch back to Writing mode
+- [ ] Verify chat input now visible