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User correctly noted that Hacktivity's application layout already includes
csrf_meta_tags, so we don't need to add them again.
## Changes:
### Section 9.3.1: Layout Strategy
- Split into Option A (Hacktivity layout - recommended) and Option B (standalone)
- **Option A (Recommended):** Read from existing meta tag
- Uses Hacktivity's csrf_meta_tags (already present in layout)
- No duplicate meta tags needed
- Reads via: document.querySelector('meta[name="csrf-token"]')?.content
- **Option B:** Standalone layout
- For when engine needs separate layout
- Must add <%= csrf_meta_tags %> to engine layout
- Can use <%= form_authenticity_token %> directly
### Section 9.3.3: Token Reading Logic
- Updated config.js to try multiple sources:
1. window.breakEscapeConfig.csrfToken (if explicitly set)
2. meta[name="csrf-token"] tag (from Hacktivity layout)
- Better error messages showing all sources checked
- Logs which source provided the token
### Section 9.3.5: Issue #2 Solution
- Updated to reference the fallback logic in 9.3.3
- Added debugging console commands
- Shows how to check all meta tags
## Key Points:
- ✅ Hacktivity layout csrf_meta_tags are reused (don't duplicate)
- ✅ Fallback chain ensures token found from either source
- ✅ Clear guidance for both integration scenarios
- ✅ Better debugging when token is missing
This aligns with Rails best practices and Hacktivity's existing setup.