CLI: highlight the matched query in slash-command autocomplete

[sejas]

Related issues

• Related to STU-1973 (follow-up to Liberate: surface /liberate when searching for migrate #4111)

How AI was used in this PR

Implemented with Claude Code: iterated on the highlight styling (underline → WordPress blue → fixed dimming on unselected rows), ran parallel review agents for reuse/simplification/efficiency cleanup, and a code-review agent pass over the final diff. All changes reviewed and verified locally.

Proposed Changes

• Highlight matching strings when typing a skill name or description.
• The highlight stays at full intensity on unselected rows too: descriptions are still dimmed, but the matched substring is not.
• On terminals without truecolor support the list renders exactly as before (no highlight, plain dim).

Testing Instructions

• npm run cli:build && node apps/cli/dist/cli/main.mjs ai
• Type /mig → the liberate suggestion appears and Mig in its description is blue.
• Type /liber → liber in the command name is blue.
• Arrow through suggestions: highlight remains visible on the selected row; unselected descriptions stay dim around the match.

highlight-blue-search.mp4

Pre-merge Checklist

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

🤖 Generated with Claude Code

[wpmobilebot]

📊 Performance Test Results

Comparing 23ca073 vs trunk

app-size

Metric	trunk	23ca073	Diff	Change
App Size (Mac)	1412.01 MB	1412.01 MB	+0.00 MB	⚪ 0.0%

site-editor

Metric	trunk	23ca073	Diff	Change
load	1089 ms	1053 ms	36 ms	⚪ 0.0%

site-startup

Metric	trunk	23ca073	Diff	Change
siteCreation	6516 ms	6518 ms	+2 ms	⚪ 0.0%
siteStartup	2391 ms	2390 ms	1 ms	⚪ 0.0%

---

Results are median values from multiple test runs.

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

[nightnei]

Awesome idea 👍
Only one thing - I would propose to use #a4cafa

I’d use the same color as in Claude Code. It’s not too bright, but still noticeable.
Or maybe this color is used in my terminal theme or Studio Code theme 🤔 Hm, anyway, I would suggest this color, but up to you 🙂

[sejas]

I like your suggested colo. It’s more subtle.