feat(clean): add JetBrains IDE cache and log cleanup

[sebastianbreguel]

Summary

• Add cleanup of JetBrains IDE caches (~/Library/Caches/JetBrains/*) and logs (~/Library/Logs/JetBrains/*)
• Covers all JetBrains IDEs installed via Toolbox or standalone: DataGrip, IntelliJ, PyCharm, WebStorm, GoLand, CLion, Rider, PhpStorm
• Complements existing clean_dev_jetbrains_toolbox which only removes old Toolbox versions

Why

JetBrains IDE caches can grow to several GB (1.8 GB observed with just DataGrip). These are safe to remove — the IDEs regenerate them on next launch. Currently mo clean handles Toolbox old versions but not the IDE caches themselves.

Safety Review

• This change only adds new safe_clean targets for caches and logs.
• No changes to path validation, protected directories, symlink handling, sudo boundaries, or release/install integrity.

Tests

• ./scripts/check.sh passes (ShellCheck, syntax, optimizations 5/5).
• ./scripts/test.sh passes.
• Manual dry-run verification with mo clean --dry-run.

[tw93]

@sebastianbreguel thanks for the PR. I landed a narrower follow-up on our side that keeps the JetBrains cleanup limited to logs only. Sweeping ~/Library/Caches/JetBrains/* is too risky because it can invalidate IDE indexes, so I am closing this version to keep the safer scope.