Stet 0.3.0

Added

• File menu in the editor header. Open a folder, jump back to a recent workspace (last 10), open the Stet Demo, or launch an AI coding agent — Claude Code, Cursor, or VS Code/Cline — directly in the current folder. Before this, once a workspace was open there was no in-app way back to the demo or to another folder. macOS only for now.
• CLAUDE.md onboarding offer. Opening a workspace now offers to add (or append) a Stet-aware CLAUDE.md so coding agents commit to feature branches and their edits surface as reviewable proposals — without it, agent commits can land silently on main and never show up for review. Shown at most once per workspace; appended sections are fenced with <!-- stet:start --> markers so you can find and edit them later.

Changed

• Branch UI redesigned. The rectangular branch cards are replaced by avatar-and-count bubbles in a vertical column to the left of the Edits sidebar. The resting state shows just who and how many; hovering a bubble opens a popover with the branch name, per-change jump dots, and eye / accept-all / reject-all actions. The bubbles no longer overlap the floating change pills, and popovers open into the document area instead of clipping off-screen.
• The always-visible top format toolbar strip has been removed — it collided with the new branch-bubble popovers. Formatting controls now live in the floating toolbar that pops up above your text selection.

Fixed

• Agent edits are attributed correctly. External auto-commits from a coding agent are now signed as that agent — recognized from the branch naming convention (claude/, cursor/, cline/, agent/, ai/) — so agent proposals render with the correct agent styling instead of being mistaken for human edits.
• Scrolling the wheel over the Edits sidebar now scrolls the document, with proper scroll-chaining when a branch's open change list needs to scroll first.
• Pure-insertion changes (a hunk that only adds lines, with no removed text) now show a change pill and can be hovered, pinned, and previewed like any other change. Previously they rendered nothing at all.