[iamnbutler]

Bumps the desktop version from 0.0.11 to 0.0.12, so Sparkle offers a new canary built from current main (c30845d). Nate asked for this release.

Included since 0.0.11:

• feat(app): open GitHub items on GitHub or in a new channel #109 (Open GitHub items on GitHub or in a new channel from the Issues and PRs lists #107): Issues/PRs rows. Title links and "Open on GitHub" open in the browser; "Open in a channel" creates a channel in the selected project and asks the agent. The desktop app now opens http(s) new-window links in the default browser (native side, apps/desktop/src/index.ts). Validation is in feat(app): open GitHub items on GitHub or in a new channel #109.
• feat(ui): attach images pasted into the composer #104 (Attach images pasted into the composer #91): images pasted into the composer are attached. This was already merged to main before this release.

Validation: bun types and bun run ci pass on this lane. Once this merges, the signed Desktop release workflow builds the exact merge commit, notarizes the app and DMG, and verifies the public download bytes before publishing the signed canary feed.

Built in Ace

An Ace channel (github-rows-canary) did all Git and GitHub work, checks, the release dispatch and verification, through its shell tool. Codex supervised by driving the Ace Canary UI; it made no edits and ran no commands. Workaround: the lane tool created the lane from the project checkout's stale feat/github-cache HEAD, so the agent reset the lane to origin/main (#96). No desktop input, clipboard or fixture apps were used for this release.