refactor: Optimize TypeScript configs and fix build ordering

- Create shared libs/tsconfig.base.json to eliminate duplication across 6 packages
- Update all lib tsconfig.json files to extend base config
- Fix build ordering to ensure sequential dependency chain (types -> utils -> platform/model-resolver/dependency-resolver -> git-utils)
- Add .gitignore patterns to prevent compiled files in src directories

Resolves PR review issues #3 and #4

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.gitignore

@@ -76,6 +76,14 @@ blob-report/
 # TypeScript
 *.tsbuildinfo
 
+# Prevent compiled files in source directories
+libs/*/src/**/*.js
+libs/*/src/**/*.d.ts
+libs/*/src/**/*.d.ts.map
+apps/*/src/**/*.js
+apps/*/src/**/*.d.ts
+apps/*/src/**/*.d.ts.map
+
 # Misc
 *.pem