Stop runtime update checks for WP-CLI and sqlite-command

[bcotrim]

Related issues

• Fixes STU-1549

How AI was used in this PR

AI-assisted implementation: code changes were reviewed and validated by the author.

Proposed Changes

• Remove runtime update checks for WP-CLI and wp-cli-sqlite-command from updateServerFiles()
• Delete wp-cli.ts and sqlite-command.ts dependency management modules
• Remove now-unused fetchLatestGithubRelease() utility and its zod schema from utils.ts
• Keep WordPress version update check in updateServerFiles() as it remains needed

These dependencies (WP-CLI, sqlite-database-integration, wp-cli-sqlite-command) are tightly coupled — if one assumes a specific version of another, runtime updates risk breaking the app. They are now shipped as fixed, bundled versions only (via setupServerFiles()).

Testing Instructions

• Run npm run typecheck — should pass with no errors
• Run npm test -- apps/cli/commands/site/tests/create.test.ts — all 46 tests should pass
• Create a new site via CLI (npm run cli:build && node apps/cli/dist/cli/main.mjs site create ~/Studio/test-site) — should still check for WordPress updates but no longer check for WP-CLI or sqlite-command updates
• Verify bundled dependencies still get copied on setup (WP-CLI phar, sqlite-command directory)

Pre-merge Checklist

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

[wpmobilebot]

📊 Performance Test Results

Comparing ccc681e vs trunk

app-size

Metric	trunk	ccc681e	Diff	Change
App Size (Mac)	1286.17 MB	1286.16 MB	0.01 MB	⚪ 0.0%

site-editor

Metric	trunk	ccc681e	Diff	Change
load	1866 ms	1902 ms	+36 ms	⚪ 0.0%

site-startup

Metric	trunk	ccc681e	Diff	Change
siteCreation	9136 ms	8105 ms	1031 ms	🟢 -11.3%
siteStartup	4948 ms	4959 ms	+11 ms	⚪ 0.0%

---

Results are median values from multiple test runs.

Legend: 🟢 Improvement (faster) | 🔴 Regression (slower) | ⚪ No change (<50ms diff)

[fredrikekelund]

Nice and simple change 👍 I haven't tested, but I trust the E2E tests to show that the fundamentals still work as expected.

[fredrikekelund]

We could maybe fold STU-1455 into this PR… I don't think that's a must-have, given that we only check for updates to a single dependency now, but it's also a really simple change and does improve bottom-line efficiency.

[bcotrim]

We could maybe fold STU-1455 into this PR… I don't think that's a must-have, given that we only check for updates to a single dependency now, but it's also a really simple change and does improve bottom-line efficiency.

Since is already done and approved let's ship it. I'll follow-up with the change for STU-1455 so we release them together in the next Studio version.