[Cross-cutting] Add cron and launchd scheduling examples

[markcallen]

Overview

Add documentation for running cache-cleaner tools on a schedule (launchd on macOS, cron on Linux/macOS) so users can automate weekly or monthly cleanup. Covers all content previously in [mac-cache-cleaner] issue #56 Part 5.

Implementation Plan

1. Location

   • Add docs/scheduling.md or extend README with "Scheduled Runs" section

2. Content

   • launchd (macOS):
     • Plist example for weekly run of mac-cache-cleaner --clean --yes
     • Install: launchctl load ~/Library/LaunchAgents/com.cache-cleaner.weekly.plist
     • Log location
   • cron:
     • 0 3 * * 0 = weekly Sunday 3am
     • Example crontab with log redirection: 0 3 * * 0 /usr/local/bin/mac-cache-cleaner --clean --yes >> ~/cache-cleaner.log 2>&1
     • Example for dev-cache: dev-cache --scan ~/src --clean --yes
     • Example for git-cleaner: git-cleaner --scan ~/src --clean
     • Example for mac-cache-cleaner: mac-cache-cleaner --clean --yes
   • brew services: If applicable, document how to run periodically via Homebrew
   • Recommendations:
     • Run during low-usage hours (e.g. overnight or weekend)
     • Ensure PATH includes tool binaries
     • Log output for debugging

Acceptance Criteria

• Documentation includes launchd plist example
• Documentation includes cron examples for all three tools
• Example crontab with log redirection included
• Clear instructions for install and log paths
• brew services noted if applicable