fix(coding-agent): use lazy-loaded photon wrapper for Node.js compatibility

Previous commit broke Node.js/tsx by using the ESM entry point which
doesn't work with Node. This creates a wrapper module that:
- Uses require() for lazy loading (works in both Node and Bun)
- Gracefully handles load failures (returns original image)
- Works in Node.js, tsx, and Bun compiled binaries

packages/coding-agent/tsconfig.build.json

@@ -5,5 +5,5 @@
 		"rootDir": "./src"
 	},
 	"include": ["src/**/*.ts"],
-	"exclude": ["node_modules", "dist"]
+	"exclude": ["node_modules", "dist", "**/*.d.ts", "src/**/*.d.ts"]
 }