v2.0.0 — Lean Git-Backed Memory

What's New

GCC v2 replaces verbose markdown storage (~500 tokens/entry) with a lean index.yaml format (~50 tokens/entry) backed by real git commits. Context is reconstructed on demand via git show.

New Scripts

Script	Purpose
gcc_commit.sh	Real git commit + lean index entry
gcc_context.sh	Reconstruct context from hashes
gcc_bridge.sh	Feed commit data to aiyoucli vector memory
gcc_cleanup.sh	TTL-based worktree cleanup + index pruning

Key Features

• Dual mode: auto-detects git repo (lean index) or standalone (v1-compatible markdown)
• ~10x token savings: 50 tokens/entry vs 500 in v1
• Context reconstruction: --summary, --last N, --hash, --decisions, --full
• aiyoucli bridge: auto-feeds commit data to vector memory when available
• Worktree TTL: automatic cleanup of expired worktrees

Breaking Changes

• index.yaml replaces commit.md, log.md, metadata.yaml as primary storage
• gcc_init.sh creates v2 structure by default
• Use gcc_init.sh --upgrade to migrate from v1 (backs up old files)

Migration from v1

cd your-project
scripts/gcc_init.sh --upgrade

This backs up v1 files to .GCC/.v1-backup/ and creates the new index.yaml.