feat: confirm no hyperscript def limit + update documentation

MAJOR FINDING: Latest hyperscript version has NO 3 def statement limit!

Test Results (tests/mjs/9-hyperscript-def-limit.test.mjs):
✅ 1 def statement - PASS
✅ 2 def statements - PASS
✅ 3 def statements - PASS
✅ 4 def statements - PASS (beyond historical limit)
✅ 5 def statements - PASS (well beyond limit)

Changes:
1. Created comprehensive def limit test
   - tests/mjs/9-hyperscript-def-limit.test.mjs
   - Tests 1, 2, 3, 4, 5 def statements
   - Verifies both parsing and function execution
   - Provides detailed analysis and recommendations

2. Updated PROJECT-MEMORY.md
   - Section 2: Changed from "NEEDS RETESTING" to "REMOVED IN LATEST VERSION"
   - Documented test findings and historical context
   - Added migration plan for hyperscript file organization
   - Updated test count to 10 systematic tests

3. Updated doc/HYPERSCRIPT-RULES.md
   - Rule 2: Removed 3 def limit warning
   - Documented historical context (Hyperscript 0.9.12 had limit)
   - New best practice: Organize by category in separate files
   - Added recommended file structure

Impact:
- Can now use unlimited def statements in hyperscript
- Enables cleaner architecture with category-based organization
- Allows migration from cv-functions.js back to hyperscript
- Better alignment with hypermedia/server-driven pattern

Next Steps:
- Create organized hyperscript file structure
- Migrate toggle functions from JavaScript to hyperscript
- Migrate hover sync functions to hyperscript
- Test each migration thoroughly

doc/HYPERSCRIPT-RULES.md

@@ -9,27 +9,29 @@
 - Longer logic MUST be extracted to named functions in .\_hs files
 - HTML templates should be clean and readable
 
-### Rule 2: File Structure - Hyperscript 0.9.12 Limitation
-**Maximum 3 `def` statements TOTAL across ALL files**
+### Rule 2: File Structure - Organized by Category
+**✅ NO def statement limit with latest hyperscript!**
+
+**HISTORICAL NOTE** (2025-11-17): Hyperscript 0.9.12 had a 3 def limit. Latest version REMOVED this limitation.
+- Test verification: `tests/mjs/9-hyperscript-def-limit.test.mjs` (all 5 def statements passed)
+- Migration in progress: Moving functions from JavaScript back to hyperscript
+
+**Current Best Practice**: Organize hyperscript functions by category in separate files
 
-⚠️ **CRITICAL**: Hyperscript 0.9.12 has a parser limitation - more than 3 `def` statements **across ALL loaded .\_hs files** causes:
 ```
-Error: Expected 'end' but found 'def'
+static/hyperscript/
+├── toggles._hs        # Toggle functions (CV length, icons, theme)
+├── hover-sync._hs     # Hover synchronization functions
+├── utils._hs          # Utility functions (print, scroll, etc.)
+└── keyboard._hs       # Keyboard shortcut handlers
 ```
 
-**Solution for Global Reusable Functions**: Use regular JavaScript instead
-- `static/js/cv-functions.js` - Global toggle and utility functions
-  - toggleCVLength(), toggleIcons(), toggleTheme()
-  - syncPdfHover(), syncPrintHover(), highlightZoomControl()
-
-**Solution for Hyperscript-Specific Logic**: Keep max 3 defs
-- `static/hyperscript/functions._hs` - ONLY hyperscript-specific utilities (printFriendly, initScrollBehavior, handleScroll)
-
-**Why JavaScript for Global Functions:**
-- ✅ No artificial limits
-- ✅ Better performance (native JS)
-- ✅ Better debugging
-- ✅ Can still be called from hyperscript using `call toggleIcons(my.checked)`
+**Benefits of Hyperscript Organization:**
+- ✅ Clean separation of concerns
+- ✅ Easy to locate and maintain functions
+- ✅ No artificial limitations
+- ✅ Server-side hypermedia pattern (functions loaded with HTML)
+- ✅ Still callable from anywhere using `call functionName(args)`
 
 ### Rule 3: HTML Structure Cleanliness
 **HTML must be as clean as possible regarding hyperscript**