Complete Phase 3: High-level API JavaScript integration

- Enhanced get() function with script, script_before, script_after parameters
- Enhanced get_many() function with script parameter (str or List[str])
- Enhanced discover() function with script and content_script parameters
- Updated ContentExtractor to populate script fields from page_data
- Maintained 100% backward compatibility
- Added comprehensive parameter validation and error handling
- Implemented script parameter alias support (script -> script_before)
- Added smart script distribution for multi-URL operations
- Enabled two-stage JavaScript execution for discovery workflow

All API functions now support JavaScript execution while preserving
existing functionality. The enhancement provides intuitive, optional
JavaScript capabilities that integrate seamlessly with the browser
automation layer.

coordination/status.json

@@ -1,7 +1,7 @@
 {
-  "project_status": "phase_2_complete",
-  "last_updated": "2024-09-15T15:45:00Z",
-  "overall_completion": 50,
+  "project_status": "phase_3_complete",
+  "last_updated": "2024-09-15T21:45:00Z",
+  "overall_completion": 75,
   
   "phases": {
     "webcontent": {
@@ -63,8 +63,8 @@
     },
     
     "api_integration": {
-      "status": "waiting",
-      "completion": 0,
+      "status": "completed",
+      "completion": 100,
       "assigned_agent": "fastapi-expert + refactoring-expert",
       "branch": "feature/js-api-integration",
       "dependencies": ["webcontent", "browser"],
@@ -81,7 +81,19 @@
         "test_discover_with_both_scripts",
         "test_api_backward_compatibility"
       ],
-      "success_criteria": "All API enhancement test classes pass"
+      "success_criteria": "All API enhancement test classes pass",
+      "implementation_notes": {
+        "get_enhanced": "Added script, script_before, script_after parameters with full backward compatibility",
+        "get_many_enhanced": "Added script parameter supporting str or List[str] for single/per-URL scripts",
+        "discover_enhanced": "Added script (search page) and content_script (content pages) parameters",
+        "content_extractor_integration": "Enhanced to populate script_result and script_error from page_data",
+        "parameter_validation": "Comprehensive validation and error handling for script parameters",
+        "backward_compatibility": "100% - all existing API calls work unchanged",
+        "alias_support": "script parameter is alias for script_before in get() function",
+        "script_flow": "script_before -> content extraction -> script_after",
+        "multi_url_handling": "Smart script distribution for get_many() with various input patterns",
+        "two_stage_discovery": "discover() supports search script and content script for full workflow"
+      }
     },
     
     "security_integration": {