ck v2.0.0

Architecture — Breaking Change

v2 replaces the prose-instruction model with deterministic Node.js scripts. Every /ck:* command now runs a script; Claude's only job is to pass data and display output. Behavior is consistent across model versions.

Added

• commands/ directory — 8 Node.js scripts handling all command logic (init, save, resume, info, list, forget, migrate, shared)
• context.json as source of truth — structured JSON with full session history; CONTEXT.md is now a generated view
• Session IDs — each save gets a unique 8-char hex ID for tracking
• /ck:migrate — converts v1 CONTEXT.md + meta.json to v2 context.json; backs up originals; supports --dry-run
• Git activity tracking — saves capture commits and files changed since last session
• Native memory integration — each save writes a memory entry to ~/.claude/projects/*/memory/ for cross-session surfacing
• Unsaved session detection — hook warns "Last session wasn't saved" when detected
• Goal mismatch detection — hook warns when context.json goal diverges from CLAUDE.md
• Session history — context.json retains all sessions; CONTEXT.md renders a ## Session History section
• displayName vs contextDir separation — display name preserves original casing/spacing
• current-session.json — hook writes session ID on start for save deduplication

Changed

• SessionStart hook now injects ~100 tokens (compact 5-line summary) instead of ~2,500 (full CONTEXT.md)
• SKILL.md reduced from ~280 lines to ~50 — now just maps commands to script calls
• install.sh detects v1 installs and prompts to run /ck:migrate after upgrade
• uninstall.sh hook removal uses ESM (consistent with the rest of the codebase)
• CONTEXT.md template removed — CONTEXT.md is now generated, not hand-edited

Removed

• templates/CONTEXT.md.template — no longer needed
• Prose-instruction command logic from SKILL.md