Another minor patch

What's Changed

• docs: document FVM-safe git worktree setup for agents by @otaj in #18
• feat: restore apps and watchfaces install QR by @otaj in #19
• fix: stop inflating multi-region catalog list progress by @otaj in #20
• feat: check firmware across Amazfit market regions by @otaj in #21
• refactor: share UI helpers and prefs boilerplate across tabs by @otaj in #22

Full Changelog: v0.0.2...v0.0.3