Add sdk build (#17335)

## Summary

Adds `app:build` command as a one-shot version of `app:dev` - builds
manifest, functions, and front components once then exits (no watching).

**Changes:**
- Added `watch` option to `FunctionsWatcher` and
`FrontComponentsWatcher` to support both watch and one-shot modes
- Created `AppBuildCommand` reusing the same build logic as `app:dev`
with `watch: false`
- Added integration tests for `app:build` on both `rich-app` and
`root-app`
- Updated manifest types: `handlerPath` → `sourceHandlerPath` +
`builtHandlerPath`, `componentPath` → `sourceComponentPath` +
`builtComponentPath`
- Updated test app `package.json` scripts to match `create-twenty-app`
template

packages/twenty-sdk/src/cli/__tests__/integration/utils/run-app-build.util.ts

@@ -0,0 +1,17 @@
+import { runCliCommand, type RunCliCommandResult } from './run-cli-command.util';
+
+export type RunAppBuildOptions = {
+  appPath: string;
+  timeout?: number;
+};
+
+export const runAppBuild = (options: RunAppBuildOptions): Promise<RunCliCommandResult> => {
+  const { appPath, timeout = 30000 } = options;
+
+  // app:build runs once and exits, so we don't wait for specific output
+  return runCliCommand({
+    command: 'app:build',
+    args: [appPath],
+    timeout,
+  });
+};

packages/twenty-sdk/src/cli/__tests__/integration/utils/run-cli-command.util.ts

@@ -54,15 +54,21 @@ export const runCliCommand = (
         ? [waitForOutput]
         : [];
 
+    let isResolved = false;
     child.stdout?.on('data', (data: Buffer) => {
       output += data.toString();
       if (
+        !isResolved &&
         waitForOutputs.length > 0 &&
         waitForOutputs.every((w) => output.includes(w))
       ) {
+        isResolved = true;
         clearTimeout(timeoutId);
-        child.kill();
-        resolve({ success: true, output });
+        // Wait a bit before killing to allow any in-progress file writes to complete
+        setTimeout(() => {
+          child.kill();
+          resolve({ success: true, output });
+        }, 500);
       }
     });