Built out a comprehensive devlog command system today. The main feature is devlog next, which shows commits since the last versioned devlog entry and suggests the next patch and minor version numbers. This makes it easy to see what needs documenting and pick the right version bump.

Added devlog skip for marking dates as intentionally skipped (trivial changes that don’t warrant an entry), and devlog diff for reviewing changes with filtering options like --since and --verbose. The diff command also shows devlog status per date so I can see at a glance what’s been documented.

Made several supporting improvements: the sync command now shows line-by-line diffs when copying settings, verify got a --timer option for performance tracking, and I added verify/commit to the global permissions list so they run without confirmation prompts.

Also did some internal cleanup, extracting the devlog functionality into separate modules and adding VSCode settings for biome.