Project Sync

Sync the durable subset of a project's gitignored .project/ folder across your own devices, via the orphan branch claude/state. Backlog, dashboard, seed, learnings, archive, and feature dossiers travel with the repo without ever being tracked on a working branch — Model A stays intact.

All procedures live in .claude/skills/shared/STATE-SYNC.md; this skill wires them to the push / pull / status modes and reports the result.

Trigger

/project-sync [push|pull|status] — no argument → mode is chosen in PHASE 1.

Platform

Detect platform: Windows ($PSVersionTable exists) → PowerShell; macOS/Linux → bash. Command variants for both OSes are in shared/STATE-SYNC.md.

Process

PHASE 0: Pre-flight

Follow shared/STATE-SYNC-PUSH.md § Preflight & temp-worktree hygiene. Concretely:

1. Main-checkout gate — compute main_root / current_root. If current_root != main_root → exit: "project-sync only runs on the main checkout. You are in worktree {current_root}. Run ExitWorktree(action: keep) first, then retry." (Worktree .project/ is symlinks back to main.)
2. Repo + remote — inside a git repo with a non-empty git remote; else exit: "state sync requires a git remote."
3. .project/ exists — else exit: "no .project/ to sync — run /core-setup first."
4. Hygiene — git worktree prune; remove any dangling $STATE_WT.
5. Branch resolution — per shared/STATE-SYNC.md § 2. If project.json#team.mode == "team" and no branch is recorded in .project/session/state-sync.json, and the mode (PHASE 1) is push → AskUserQuestion for the branch name (first option claude/state-{user} = recommended). Persist the choice.

PHASE 1: Mode dispatch

Argument push / pull / status. No argument → AskUserQuestion:

• "Status (Recommended)" — show what would sync, change nothing
• "Push" — send local durable state to the state branch
• "Pull" — bring remote state into this device

PHASE 2: Execute

• status — git fetch origin "$STATE_BRANCH"; show the resolved branch, remote SHA vs state-sync.json#lastSyncedSha, local drift (the collect-into-LAST-worktree check from STATE-SYNC.md § 7, reported as a changed-file count), and last push/pull timestamps. No writes.
• push — follow shared/STATE-SYNC-PUSH.md § Push procedure (incl. first-time orphan and push-rejected retry). Update state-sync.json.
• pull — follow shared/STATE-SYNC.md § 7 (Pull procedure & conflict matrix). Update state-sync.json.

PHASE 3: Report

ASCII table:

STATE SYNC ─ {mode}
───────────────────────────────────────────
Branch          claude/state[-user]
Remote SHA      {shortsha}   (was {last shortsha})
Pushed          {n} file(s)  | —
Pulled          {n} file(s)  | —
Merged          {n} file(s)  | —
Conflicts       {n resolved} | —
lastSyncedSha   {shortsha}
───────────────────────────────────────────

Fill only the rows relevant to the mode (status shows drift counts, no SHA change).