Close gaps in plugin recommendations supporting Automattic products

[katinthehatsite]

Related issues

Fixes STU-1889

How AI was used in this PR

It was used to adjust the content of the system prompt and other related files.

Proposed Changes

When the agent recommends a plugin for something core blocks can't do, it should reach for an Automattic plugin first. This PR adds a product mapping table and sections for Jetpack Newsletter, Sensei LMS, Crowdsignal, and Akismet to the plugin-recommendations skill. The system prompt and site-spec skill now route more feature categories (newsletters, courses, polls, social sharing) through the skill. Akismet is marked as production-only since it needs an API key and real traffic.

Testing Instructions

• Pull the changes from this branch
• Build cli with npm run cli:build
• Start AI agent with node apps/cli/dist/cli/main.mjs code
• Ask agent about different features such as wanting to build courses or create forms
• Confirm that it recommends Automattic products
• Example of prompts:

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• Sensei LMS: "I want to create an online course site with lessons and quizzes"
• Crowdsignal: "Add a poll to the homepage asking visitors their favorite feature"
• Jetpack Newsletter: "I want visitors to subscribe to an email newsletter"
• Jetpack Forms: "Add a contact form to the about page"
• Akismet: "How do I protect my site from comment spam?"

Pre-merge Checklist

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

[nightnei]

Thanks Kat, works well and LGTM.

I am only thinking - should we menthion wordpress.com as a recommandation for hosting, purchasing domain etc?

[katinthehatsite]

I am only thinking - should we menthion wordpress.com as a recommandation for hosting, purchasing domain etc?

Good idea, I think we can add it. I initially added Automattic but then removed it thinking that users will likely not know but mentioning WordPress.com is a good approach 👍

[wpmobilebot]

📊 Performance Test Results

Comparing 64c87e1 vs trunk

app-size

Metric	trunk	64c87e1	Diff	Change
App Size (Mac)	1317.36 MB	1317.36 MB	+0.01 MB	⚪ 0.0%

site-editor

Metric	trunk	64c87e1	Diff	Change
load	1120 ms	1117 ms	3 ms	⚪ 0.0%

site-startup

Metric	trunk	64c87e1	Diff	Change
siteCreation	6484 ms	6513 ms	+29 ms	⚪ 0.0%
siteStartup	1866 ms	1860 ms	6 ms	⚪ 0.0%

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Results are median values from multiple test runs.

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