Unify selective push and export logic

[sejas]

Related issues

• Fixes STU-970
• STU-756
• Studio: Use local tree for push #1940 (review)

Proposed Changes

• Simplifies the push and export logic to produce same wp-content data. sqlite-database-integration is excluded and all the wp-content data is included.
• Improve tests respecting the fake files and directories

Testing Instructions

Test selective push

• Apply this diff

diff --git a/src/ipc-handlers.ts b/src/ipc-handlers.ts
index c44c6256..037cb80f 100644
--- a/src/ipc-handlers.ts
+++ b/src/ipc-handlers.ts
@@ -794,6 +794,9 @@ export async function exportSiteForPush(
 		const stats = fs.statSync( archivePath );
 		return { archivePath, archiveSizeInBytes: stats.size };
 	} finally {
+		const tempralDestination = `${ TEMP_DIR }manual-test.${ extension }`;
+		fs.copyFileSync( archivePath, tempralDestination );
+		shell.showItemInFolder( tempralDestination );
 		SYNC_ABORT_CONTROLLERS.delete( operationId );
 	}
 }
@@ -826,6 +829,8 @@ export async function pushArchive(
 		formData.push( [ 'options', optionsToSync.join( ',' ) ] );
 	}
 
+	return { success: true };
+
 	try {
 		await wpcom.req.post( {
 			path: `/sites/${ remoteSiteId }/studio-app/sync/import`,

• Run npm start
• Go to the Sync tab
• Connect a site and click on push
• Select only database
• Observe that the zip file created contains only the SQL files and other meta files
• Click again on push
• Select all options (database and files)
• Observe the zip created contains also extra-folders and files inside wp-content
• Click again on push
• Select only mu-plugins
• Observe that the sqlite-database-integration is not included in the zip file.

test-push.mp4

Test export database and full export

• Run npm start
• Go to the Sync tab
• Export the database
• Observe the database is correctly exported
• Export the full site
• Observe that the zip file created contains only the SQL files and other meta files

test-exports.mp4

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[github-actions]

📊 Performance Test Results

Comparing 8a701ae vs trunk

site-editor

Metric	trunk	8a701ae	Diff	Change
load	11252.00 ms	10492.00 ms	-760.00 ms	🟢 -6.8%

site-startup

Metric	trunk	8a701ae	Diff	Change
siteCreation	21151.00 ms	20228.00 ms	-923.00 ms	🟢 -4.4%
siteStartup	5992.00 ms	6970.00 ms	+978.00 ms	🔴 16.3%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change

[katinthehatsite]

Nice simplification 👍

[katinthehatsite]

This looks good, different test cases worked well 👍