Keep recognition HUD single-line

[IchenDEV]

Summary

• keep transcribing, processing, and inserting overlays as 40-point single-line capsules
• remove the second-row simulated progress track and its timer state
• add regression coverage for consistent working-state geometry

Why

The recognition HUD expanded from the compact recording capsule into a taller two-row layout. That caused the overlay to jump vertically after recording stopped. The working states now retain the established capsule height while continuing to communicate activity through their status icon and label.

User impact

The transition from recording to recognition stays visually stable, with no extra progress row or height change.

Validation

• swift test --scratch-path /Users/chenli/projects/opentype/.build — 529 tests passed, 7 skipped; 2 Swift Testing tests passed
• ./scripts/ci-basic-checks.sh
• git diff --check
• rendered the recognition state in the real macOS overlay and confirmed the 40-point single-line capsule