v0.36.0 — per-repository lease scoping + manual release

Fixed

• Cross-repository lease bleed. A synapse lock <id> -- <cmd> with no explicit
  --paths claimed the shared default worktree, so every keyless lock contended with
  every other claim regardless of its name — one repository's :git push-lock could
  block an unrelated repository's lock or claim. A keyless lock is now a pure named
  mutex scoped to its own id, so distinct ids never contend; passing --paths still
  opts into shared file-scope overlap. A git-claim likewise now resolves the
  repository root (git rev-parse --show-toplevel) and sets it as the claim's
  worktree, so two repositories declaring identically-named paths no longer conflict
  while overlaps within one repository are still detected.

Added

• synapse release <task> --name <owner> — manually drop a claim you own. This is the
  escape hatch for a claim no commit or merge will auto-release (a
  git-claim --auto-release-on manual), which previously had no command-line release
  path.