🤖 refactor: replace API Extractor with TypeDoc

Consolidates API documentation from 92 files to 1 file (1055 lines).

Changes:
- Removed @microsoft/api-extractor and @microsoft/api-documenter
- Added typedoc and typedoc-plugin-markdown
- Replaced api-extractor.json with typedoc.json
- Deleted tsconfig.api-extractor.json (no longer needed)
- Generated single docs/api/index.md instead of 92 separate files
- Updated 'make docs-api' and 'bun run docs:api' commands
- Updated .gitignore (removed temp/, etc/, added .typedoc/)

Benefits:
- Easier to navigate (single page with table of contents)
- Less maintenance burden (1 file vs 92)
- Better user experience (cmd+f to find anything)
- Cleaner docs/ directory structure

Generated with cmux

Author: ammar-agent

.gitignore

@@ -110,6 +110,5 @@ terminal-bench-results/
 nodemon.json
 test_hot_reload.sh
 
-# API Extractor
-temp/
-etc/
+# TypeDoc
+.typedoc/

Makefile

@@ -279,10 +279,9 @@ docs-watch: ## Watch and rebuild documentation
 
 docs-api: ## Generate extension API reference documentation
 	@echo "$(BLUE)Generating extension API documentation...$(RESET)"
-	@bun x tsc -p tsconfig.api-extractor.json
-	@bun x api-extractor run --local
-	@bun x api-documenter markdown --input-folder temp/api --output-folder docs/api
-	@echo "$(GREEN)✓ API documentation generated in docs/api/$(RESET)"
+	@bun x typedoc
+	@mv docs/api/README.md docs/api/index.md 2>/dev/null || true
+	@echo "$(GREEN)✓ API documentation generated in docs/api/index.md$(RESET)"
 
 ## Storybook
 storybook: node_modules/.installed ## Start Storybook development server