Adding make reinstall

README.md

@@ -233,6 +233,33 @@ first (respecting `$XDG_CONFIG_HOME`). The repo's `config.yaml` is gitignored.
 
 ---
 
+### Updating — `make reinstall`
+
+After pulling new code or editing a Go source file, refresh whatever's already
+deployed without going through the full installer:
+
+```bash
+git pull
+make reinstall
+```
+
+`reinstall` rebuilds the binary and refreshes only the pieces that are already
+installed:
+
+| Component         | Action when present                                                |
+|-------------------|--------------------------------------------------------------------|
+| Main binary       | rebuilt and copied into `~/.local/bin` (Linux) or `~/go/bin` (macOS) |
+| Service unit      | systemd unit / launchd plist re-installed; service restarted        |
+| Helper (Linux)    | rebuilt, re-installed under `/usr/local/bin`, helper service restarted (sudo) |
+| Watchdog          | script + unit/plist refreshed and timer restarted                   |
+| `modules.yaml`    | re-copied from `modules.example.yaml` into the active config dir    |
+
+Anything not currently installed prints `· skipped` instead of failing.
+No dependency installs, no dotfile prompts, no symlink logic — that's still
+`make install`'s job.
+
+---
+
 ### AUR (Arch Linux)
 
 > AUR package coming soon. Until then, use `make install` above.