fix(tui): keep status rule one-line in skinny terminals

[OutThisLife]

Summary

• Clamp the cwd/branch segment in the TUI status rule so it cannot force the status row wider than the terminal.
• Truncate the right-hand cwd label on narrow panes instead of wrapping into the composer input.
• Add width calculation regression tests for skinny terminal sizes.

Context

Addresses the skinny-terminal report where the status bar wraps into the input field.

Test plan

• npm run build --prefix packages/hermes-ink
• npx vitest run --maxWorkers 4 --testTimeout 15000 src/__tests__/statusRule.test.ts
• npx eslint src/components/appChrome.tsx src/__tests__/statusRule.test.ts (0 errors; existing GoodVibesHeart dependency warning remains)
• npm run build

[github-actions]

🔎 Lint report: bb/tui-skinny-status-rule vs origin/main

ruff

Total: 0 on HEAD, 0 on base (➖ 0)

🆕 New issues: none

✅ Fixed issues: none

Unchanged: 0 pre-existing issues carried over.

ty (type checker)

Total: 9029 on HEAD, 9029 on base (➖ 0)

🆕 New issues: none

✅ Fixed issues: none

Unchanged: 4805 pre-existing issues carried over.

Diagnostics are surfaced as warnings — this check never fails the build.

[Copilot]

Pull request overview

This PR adjusts the TUI StatusRule layout so the status bar stays on one line in narrow terminals by clamping/truncating the right-hand cwd/branch segment, and adds regression tests around the width calculations.

Changes:

• Introduces a statusRuleWidths helper to compute left/right/separator widths based on terminal columns.
• Updates StatusRule rendering to conditionally render and truncate the cwd/branch segment within a fixed-width box.
• Adds vitest coverage for the width calculation behavior across “skinny terminal” sizes.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
ui-tui/src/components/appChrome.tsx	Adds statusRuleWidths and uses it to clamp/truncate the status rule’s right-hand cwd/branch segment.
ui-tui/src/tests/statusRule.test.ts	Adds regression tests to ensure computed widths do not exceed the terminal width and that the cwd segment is truncated/omitted on narrow widths.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[hal-blinc]

Coach review: ready to merge. Verified clean merge state, no failing/pending checks, targeted review/tests passed or were confirmed by CI. Low-risk housekeeping fix.

[ethernet8023]

LGTM in tests.