- bin/ssr-update: fast-forward `git pull` on the clone with safety guards
(dirty tree, detached HEAD, divergent history all abort).
- Re-renders & reloads the launchd plist when launchd/ or bin/ssr* changed
AND the schedule is currently active, so the cron picks up any plist
template updates automatically.
- Reports VERSION delta, commit log, and new config keys introduced in
config/ssr.conf.example so users can opt-in via `ssr config edit`.
- `--dry-run` shows would-be changes without pulling or touching launchd.
- Wired into bin/ssr dispatcher + README updated (Updating section, layout
entry, command help line).
Co-authored-by: Cursor <cursoragent@cursor.com>
