Update studio code command description

[sejas]

Related issues

• Related to STU-1526
• Follow-up of Rename studio ai command to studio code #3002 (comment)

Proposed Changes

• I feel the "AI agent for building WordPress" description was missing something. I suggest adding sites, so it would look like: "AI agent for building WordPress sites".

Testing Instructions

1. Build the CLI: npm run cli:build
2. Run node apps/cli/dist/cli/main.mjs --help
3. Verify the code command description reads "AI agent for building WordPress sites".

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors? (Tests pass, no errors)

[wpmobilebot]

📊 Performance Test Results

Comparing 5af2606 vs trunk

app-size

Metric	trunk	5af2606	Diff	Change
App Size (Mac)	1252.12 MB	1252.12 MB	+0.00 MB	⚪ 0.0%

site-editor

Metric	trunk	5af2606	Diff	Change
load	1966 ms	1866 ms	100 ms	🟢 -5.1%

site-startup

Metric	trunk	5af2606	Diff	Change
siteCreation	8124 ms	8119 ms	5 ms	⚪ 0.0%
siteStartup	4020 ms	4157 ms	+137 ms	🔴 3.4%

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Results are median values from multiple test runs.

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