Convention-based discovery picks up unrelated packages with skills/ directories #66

Problem

intent list and intent install discover packages purely by convention — any npm package in node_modules that has a skills/*/SKILL.md structure gets picked up, even if it has no intent to be an Intent-compatible package.

In our case, @alavida-ai/plugin-website-dev (a Claude Code plugin with 10 internal skills) shows up alongside our actual Intent-enabled packages (@alavida/agentpack, @alavida/agonda). This package has no intent field, no relevant keywords — it just happens to use the same skills/ directory convention for a different system.

Expected behavior

Packages should explicitly opt in to Intent discovery — for example via a "intent" field in package.json, a keyword, or some other signal. Convention-based discovery should be a fallback, not the only mechanism.

Current behavior

Any package with skills/*/SKILL.md appears in intent list output and gets proposed during intent install, regardless of whether it was designed for Intent.

Reproduction

1. Have a non-Intent package installed that uses skills/*/SKILL.md for its own purposes
2. Run npx @tanstack/intent list
3. The unrelated package appears alongside actual Intent packages

Suggestion

Add an opt-in signal, e.g.:

• "intent": true or "intent": { "skills": [...] } in package.json
• A "tanstack-intent" keyword
• An intent.config.json or similar marker file

This would let Intent distinguish between packages that intentionally publish Intent skills and packages that coincidentally share the directory structure.