[devohmycode]

Brings the work of claude/determined-lamport-x5oqeg into 0.40.0, as one commit on top of main. That branch's ten commits stay on the remote branch.

What it adds

• Project skills get updates: outdated, update and u in the tree check both scopes.
• skills-atlas suggest and 💡 For this project: skills for the technologies a project uses.
• Context cost: what a skill costs at session start and when used, in previews, show, show_skill and installed --size, with a warning above 5,000 tokens per agent.
• Profiles and backups: profile use <pack> keeps only a pack's skills in a scope after an exact backup; profile restore puts it back.
• Personal packs: created, edited and deleted from the CLI, the tree and the web page; shipped packs always show.
• MCP: suggest_skills, update_skills, rollback_skill, doctor, sync_project.
• Tree: warnings on their own page, packs, profiles and backups in the tree's own windows.

Merged with what main gained since

• show_skill, the web preview and the update diff keep both sides: look-alike names and whole-folder diff from main, context cost and project scope from the branch.
• MCP tool list: the branch's five tools plus unused_skills and overlapping_skills.
• README and CHANGELOG: the branch's entries join the 0.40.0 section; the usage block and the introduction name the new commands.

Fixed on the way

Two tests of the profile backups failed on Windows only: they compared paths with / and links by their literal target, while Windows restores a link as a junction with an absolute target. They now compare normalised paths and where a link leads.

Tests

npm run typecheck and npm run build pass; npm test: 323 pass (on Windows). Tried for real: installed --size, show, profile list, overlaps. profile use and profile restore were not run for real.