VS Code chat participant exposes only CLI commands, not the ctx skill/workflow layer

[bilersan]

Problem

The shipped @ctx VS Code chat participant is a thin wrapper over ctx CLI subcommands — its ~31 slash-commands each shell out to a CLI command. It surfaces none of the ctx skill/workflow layer (/brainstorm, /implement, /reflect, /remember, /next, /spec, /audit, /blog, /changelog, /consolidate, /map, /verify, /worktree, /wrapup) — arguably the highest-value AI workflows in ctx, and exactly what belongs in a chat participant.

A complete skill-backed implementation was developed but never landed; main still ships the wrapper.

Impact

• @ctx users can run CLI-equivalent commands but cannot invoke the skill workflows from chat.
• The participant under-delivers relative to the ctx skill ecosystem / the .claude/skills surface.
• Dedicated /decisions and /learnings management is missing (only /add covers creation).

Proposal

Land the skill-backed chat participant: reconcile contributes.chatParticipants to exactly the commands the extension dispatches (45), add the skill/workflow commands + a reminder status bar + violation guardrails, and cover the new handlers with tests.

Command-surface changes vs. the current wrapper:

• +21 new commands (skill/workflow layer + dedicated /decisions, /learnings)
• 4 renamed to plurals: /change→/changes, /dep→/deps, /task→/tasks, /permission→/permissions
• Removed: /loop, /diag; /site folded into /journal, /doctor handled inline

Acceptance

• contributes commands == dispatched commands (exact parity)
• tsc (default + tsconfig.ci.json), eslint, vitest, and vsce package all green
• CHANGELOG updated

A PR implementing this on top of current main is ready (rides on the existing ESLint 9 + tsconfig.ci + vitest/vsce CI).