fix: address meta-feedback issues from #22

[KyleAMathews]

Summary

Addresses all actionable bugs and improvements from the Durable Streams meta-feedback test run.

Scanner: derive config from standard package.json fields

• Packages with a skills/ directory no longer need an explicit intent config field
• repo is derived from repository, docs from homepage
• Explicit intent field still takes priority when present

Scaffold CLI fixes

• npx intent → npx @tanstack/intent in all scaffold output
• Added explicit _artifacts/ exclusion instructions ("!skills/_artifacts" in files array)

Monorepo support across scaffold + all meta skills

• Scaffold now explains the full monorepo layout: domain map artifacts at repo root, skills per-package
• Each package needs: @tanstack/intent devDep, bin entry + shim, skills in files array
• Domain discovery: notes monorepo artifact placement at repo root
• Tree generator: adds package field to skill tree YAML schema
• Generate skill: writes to per-package skills directory when package field is present

Domain discovery improvements

• Flexible domain count: replaced rigid "4–7 domains" with complexity-driven guidance
• Grouping validation step: "Would a developer working on a single feature need to load skills from multiple domains? If so, merge them."
• Peer dependency reading: new Phase 1b reads peer dependency docs for framework-integration failure modes (SSR, component lifecycle, connection limits, singleton patterns)
• Code pattern pairs: wrong_pattern and correct_pattern fields added to failure mode YAML schema

Generator & validator

• Budget-aware generator: Step 2 now instructs proactive reference file planning before hitting the 500-line limit
• Better validation message: 500-line error now says "Rewrite for conciseness: move API tables to references/, trim verbose examples..." instead of just stating the limit

Test plan

• All 130 existing tests pass
• Build succeeds
• Scanner still warns on packages with skills/ but no repository or intent field
• Existing scanner tests (explicit intent field) still work

🤖 Generated with Claude Code

Closes #22

[pkg-pr-new]

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npm i https://pkg.pr.new/@tanstack/intent@23

commit: 24db6c7