refactor: convert to pure TypeScript plugin for native OpenCode integration

- Rewrite entire plugin in TypeScript using @opencode-ai/plugin SDK
- Components: intent detection, workflow engine, orchestrator, skills, dashboard
- 32 passing tests
- Ready for native OpenCode plugin loading

Author: Adarsh

.gitignore

@@ -13,8 +13,12 @@ multiarc-plugin
 *.out
 
 # Dependency directories
+node_modules/
 vendor/
 
+# Build output
+dist/
+
 # IDE
 .idea/
 .vscode/
@@ -32,3 +36,6 @@ Thumbs.db
 # Go workspace
 go.work
 go.work.sum
+
+# Lock files
+package-lock.json