Task Orchestrator

{
  "project": "project-name",
  "repo": "owner/repo",
  "workdir": "/path/to/worktrees",
  "created": "2026-01-17T00:00:00Z",
  "model": "gpt-5.2-codex",
  "modelTier": "high",
  "phases": [
    {
      "name": "Phase 1: Critical",
      "tasks": [
        {
          "id": "t1",
          "issue": 1,
          "title": "Fix X",
          "files": ["src/foo.js"],
          "dependsOn": [],
          "status": "pending",
          "worktree": null,
          "tmuxSession": null,
          "startedAt": null,
          "lastProgress": null,
          "completedAt": null,
          "prNumber": null
        }
      ]
    }
  ]
}

# 1. Create working directory
WORKDIR="${TMPDIR:-/tmp}/orchestrator-$(date +%s)"
mkdir -p "$WORKDIR"

# 2. Clone repo for worktrees
git clone https://github.com/OWNER/REPO.git "$WORKDIR/repo"
cd "$WORKDIR/repo"

# 3. Create tmux socket
SOCKET="$WORKDIR/orchestrator.sock"

# 4. Initialize manifest
cat > "$WORKDIR/manifest.json" << 'EOF'
{
  "project": "PROJECT_NAME",
  "repo": "OWNER/REPO",
  "workdir": "WORKDIR_PATH",
  "socket": "SOCKET_PATH",
  "created": "TIMESTAMP",
  "model": "gpt-5.2-codex",
  "modelTier": "high",
  "phases": []
}
EOF

# Fetch all open issues
gh issue list --repo OWNER/REPO --state open --json number,title,body,labels > issues.json

# Group by files mentioned in issue body
# Tasks touching same files should serialize

# For each task, create isolated worktree
cd "$WORKDIR/repo"
git worktree add -b fix/issue-N "$WORKDIR/task-tN" main

SOCKET="$WORKDIR/orchestrator.sock"

# Create session for task
tmux -S "$SOCKET" new-session -d -s "task-tN"

# Launch Codex (uses gpt-5.2-codex with reasoning_effort=high from ~/.codex/config.toml)
# Note: Model config is in ~/.codex/config.toml, not CLI flag
tmux -S "$SOCKET" send-keys -t "task-tN" \
  "cd $WORKDIR/task-tN && codex --yolo 'Fix issue #N: DESCRIPTION. Run tests, commit with good message, push to origin.'" Enter

#!/bin/bash
# check_progress.sh - Run via heartbeat

WORKDIR="$1"
SOCKET="$WORKDIR/orchestrator.sock"
MANIFEST="$WORKDIR/manifest.json"
STALL_THRESHOLD_MINS=20

check_session() {
  local session="$1"
  local task_id="$2"
  
  # Capture recent output
  local output=$(tmux -S "$SOCKET" capture-pane -p -t "$session" -S -50 2>/dev/null)
  
  # Check for completion indicators
  if echo "$output" | grep -qE "(All tests passed|Successfully pushed|❯ $)"; then
    echo "DONE:$task_id"
    return 0
  fi
  
  # Check for errors
  if echo "$output" | grep -qiE "(error:|failed:|FATAL|panic)"; then
    echo "ERROR:$task_id"
    return 1
  fi
  
  # Check for stall (prompt waiting for input)
  if echo "$output" | grep -qE "(\? |Continue\?|y/n|Press any key)"; then
    echo "STUCK:$task_id:waiting_for_input"
    return 2
  fi
  
  echo "RUNNING:$task_id"
  return 0
}

# Check all active sessions
for session in $(tmux -S "$SOCKET" list-sessions -F "#{session_name}" 2>/dev/null); do
  check_session "$session" "$session"
done

# Add to cron (every 15 minutes)
cron action:add job:{
  "label": "orchestrator-heartbeat",
  "schedule": "*/15 * * * *",
  "prompt": "Check orchestration progress at WORKDIR. Read manifest, check all tmux sessions, self-heal any stuck tasks, advance to next phase if current is complete. Do NOT ping human - fix issues yourself."
}

# 1. Fetch issues
gh issue list --repo OWNER/REPO --state open --json number,title,body > /tmp/issues.json

# 2. Analyze for dependencies (files mentioned, explicit deps)
# Group into phases:
# - Phase 1: Critical/blocking issues (no deps)
# - Phase 2: High priority (may depend on Phase 1)
# - Phase 3: Medium/low (depends on earlier phases)

# 3. Within each phase, identify:
# - Parallel batch: Different files, no deps → run simultaneously
# - Serial batch: Same files or explicit deps → run in order

# Create worktrees for Phase 1 tasks
for task in phase1_tasks; do
  git worktree add -b "fix/issue-$issue" "$WORKDIR/task-$id" main
done

# Launch tmux sessions
for task in phase1_parallel_batch; do
  tmux -S "$SOCKET" new-session -d -s "task-$id"
  tmux -S "$SOCKET" send-keys -t "task-$id" \
    "cd $WORKDIR/task-$id && codex --model gpt-5.2-codex-high --yolo '$PROMPT'" Enter
done

# When task completes successfully
cd "$WORKDIR/task-$id"
git push -u origin "fix/issue-$issue"
gh pr create --repo OWNER/REPO \
  --head "fix/issue-$issue" \
  --title "fix: Issue #$issue - $TITLE" \
  --body "Closes #$issue

## Changes
[Auto-generated by Codex orchestrator]

## Testing
- [ ] Unit tests pass
- [ ] Manual verification"

# After all PRs merged or work complete
tmux -S "$SOCKET" kill-server
cd "$WORKDIR/repo"
for task in all_tasks; do
  git worktree remove "$WORKDIR/task-$id" --force
done
rm -rf "$WORKDIR"