Git Context Controller (GCC) v2

Overview

GCC transforms agent memory from verbose markdown into a lean, git-backed index. Instead of duplicating what git already knows, GCC stores only hash + intent + optional decision notes (~50 tokens vs ~500 per entry). Full context is reconstructed on demand via git show.

Two modes:

• git mode: Real commits, lean index.yaml, worktree isolation, aiyoucli bridge
• standalone mode: Markdown fallback for projects without git (v1 compatible)

Initialization

On first use, check if .GCC/ exists. If not, run the init script:

scripts/gcc_init.sh          # auto-detects git/standalone
scripts/gcc_init.sh --upgrade # migrate v1 → v2

Git mode structure

.GCC/
├── index.yaml       # Single source of truth (timeline, worktrees, decisions)
├── branches/        # Branch-specific notes (only when needed)
├── worktrees/       # Worktree tracking
└── .bridge-log      # Tracks what's been synced to aiyoucli

Standalone mode structure

.GCC/
├── index.yaml       # Timeline in standalone mode
├── main.md          # Global roadmap (v1 compat)
├── log.md           # OTA execution log (v1 compat)
└── branches/

index.yaml Format

version: 2
mode: git              # or "standalone"
created: "2026-03-28T00:00:00Z"
config:
  proactive_commits: true
  worktree_ttl: 24h
  bridge_to_aiyoucli: auto   # auto | off | manual

current_branch: main

timeline:
  - id: C001
    hash: 85c8539
    intent: "release prep"
    branch: main
    date: "2026-02-25T21:40:00Z"

  - id: C002
    hash: a3f1b22
    intent: "auth middleware rewrite"
    note: "descartamos passport.js — too opinionated for our use case"
    branch: main
    date: "2026-02-26T10:00:00Z"

worktrees:
  - name: refactor-auth
    path: ../gcc-wt-refactor-auth
    branch: refactor-auth
    created: "2026-03-28T10:00:00Z"
    ttl: 24h
    status: active

decisions: []

Key principle: hash is the pointer to git truth. intent is why. note is only for decisions git can't capture (rejected alternatives, trade-offs).

Scripts

gcc_init.sh

Initialize GCC v2. Auto-detects git repo.

scripts/gcc_init.sh              # new project
scripts/gcc_init.sh --upgrade    # migrate v1 → v2 (backs up old files)

gcc_commit.sh

Execute a real git commit and append lean entry to index.

scripts/gcc_commit.sh "implement retry logic"
scripts/gcc_commit.sh "release prep" "descartamos semantic-release por overhead"
scripts/gcc_commit.sh --staged "hotfix: null check"   # only staged files

gcc_context.sh

Reconstruct context from index hashes.

scripts/gcc_context.sh                    # last 5 entries with git details
scripts/gcc_context.sh --last 10          # last 10
scripts/gcc_context.sh --hash abc123      # full details for specific commit
scripts/gcc_context.sh --summary          # one-line per entry (cheap, no git calls)
scripts/gcc_context.sh --decisions        # only entries with notes
scripts/gcc_context.sh --full             # everything

gcc_bridge.sh

Feed commit data to aiyoucli vector memory. Silent no-op if aiyoucli unavailable.

scripts/gcc_bridge.sh --status            # check bridge connectivity
scripts/gcc_bridge.sh --sync              # sync all unsynced entries
# Called automatically by gcc_commit.sh when bridge_to_aiyoucli: auto

gcc_cleanup.sh

TTL-based worktree cleanup and index pruning.

scripts/gcc_cleanup.sh                    # interactive cleanup
scripts/gcc_cleanup.sh --dry-run          # show what would be cleaned
scripts/gcc_cleanup.sh --force            # clean without asking
scripts/gcc_cleanup.sh --prune-index 50   # keep last 50 timeline entries

Commands

COMMIT

Persist a milestone. In git mode, executes a real commit.

Triggers: /gcc commit <summary>, "commit this progress", "checkpoint"

Procedure (git mode):

1. Run scripts/gcc_commit.sh "<intent>" ["<note>"]
2. This stages changes, commits, captures hash, appends to index.yaml
3. If bridge_to_aiyoucli: auto, feeds to aiyoucli memory

Procedure (standalone mode):

1. Run scripts/gcc_commit.sh "<intent>"
2. Appends OTA entry to log.md

Proactive behavior: When proactive_commits: true, suggest a commit after:

• Completing a function, module, or coherent unit of work
• Fixing a bug and verifying the fix
• Finishing a research/exploration phase with conclusions

BRANCH

Create an isolated workspace. In git mode, uses real git worktrees.

Triggers: /gcc branch <name>, "try a different approach", "experiment with..."

Procedure (git mode):

1. git worktree add ../gcc-wt-<name> -b <name>
2. Register in index.yaml under worktrees: with TTL
3. Agent works in worktree directory

Procedure (standalone mode):

1. Create .GCC/branches/<name>/ with summary.md, log.md
2. Register in index.yaml timeline

MERGE

Integrate a branch back. In git mode, real git merge.

Triggers: /gcc merge <branch>, "integrate the experiment", "branch X is done"

Procedure (git mode):

1. cd to main worktree
2. git merge <branch>
3. Append synthesis entry to timeline with intent + learnings as note
4. git worktree remove ../gcc-wt-<name>
5. Update worktree status to merged

Procedure (standalone mode):

1. Read branch summary and commits
2. Append synthesis to main timeline
3. Update branch status

CONTEXT

Retrieve historical memory. Reconstructed from git, not stored verbatim.

Triggers: /gcc context, "where were we?", "what's the status?"

Flags:

• --summary — One-line per entry. Cheapest option (~0 extra tokens). Use for quick orientation.
• --last N — Last N entries with full git reconstruction. Default for session recovery.
• --hash <hash> — Deep dive into specific commit (diff, message, files).
• --decisions — Only entries with notes (rejected alternatives, trade-offs).
• --full — Everything. Use sparingly.

CLEANUP

Maintain the index and worktrees.

Triggers: /gcc cleanup, "clean up old worktrees"

Procedure:

1. Run scripts/gcc_cleanup.sh to handle expired worktrees
2. Run scripts/gcc_cleanup.sh --prune-index 50 to trim old entries

Cross-Session Recovery

When starting a new session on a project with .GCC/:

1. Run scripts/gcc_context.sh --summary for quick orientation
2. If more detail needed, run scripts/gcc_context.sh --last 5
3. Check scripts/gcc_cleanup.sh --dry-run for expired worktrees
4. Resume work with full context reconstructed from git

Cost: ~50 tokens for summary vs ~2500 tokens loading all v1 markdowns.

aiyoucli Integration

When bridge_to_aiyoucli: auto in config:

• Every commit is automatically fed to aiyoucli vector memory via gcc_bridge.sh
• Stored with namespace gcc, tagged by branch
• Enables semantic search across commits: "when did I do something similar?"
• If aiyoucli is not installed, bridge is silently skipped

Manual sync: scripts/gcc_bridge.sh --sync

Natural Language Mapping