chore: add files field to all packages, bump to 0.3.16

Excludes tsconfig.json and source files from published packages.
Fixes TypeScript errors when consuming packages via bun.

packages/cli-workflow/package.json

@@ -1,6 +1,7 @@
 {
   "name": "@uncaged/cli-workflow",
-  "version": "0.3.15",
+  "version": "0.3.16",
+  "files": ["dist", "package.json"],
   "type": "module",
   "bin": {
     "uncaged-workflow": "src/cli.ts"
@@ -19,4 +20,4 @@
   "scripts": {
     "test": "bun test"
   }
-}
+}