feat(render) 03 - Migrate src/render/team-pick.ts to use src/render/terminal.ts

[shouze]

EPIC: #140
Branch: feat/bun14-terminal
Depends on: #141
Parallelizable with: #142
Blocks: #144

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Context / Problem

renderTeamPickHeader() in src/render/team-pick.ts computes the sliding window width using text.length (UTF-16 code units) and truncates with .slice().

A team name containing a wide character produces an overflow or a misaligned truncation. Concrete example: "[ squad-\u{1F916} ]" (a team name with a robot emoji) has .length === 13 but occupies 14 terminal columns. The sliding window overflows by one column. A team name with two CJK characters (e.g. "\u524D\u7AEF") similarly miscounts.

Solution

Two targeted replacements in renderTeamPickHeader():

1. widths[i] = texts[i].length -> widths[i] = visibleWidth(texts[i])
2. texts[safeIndex].slice(0, maxWidth - 1) + "..." -> clipToWidth(texts[safeIndex], maxWidth - 1) + "..."

The remaining windowing calculations (addCost, totalWidth, EL_LEFT, EL_RIGHT) already read from widths[i] and require no further changes once the width values are correct.

src/render/team-pick.ts imports from src/render/terminal.ts only. It does not call Bun.stringWidth, Bun.sliceAnsi, or Bun.stripANSI directly.

Acceptance Criteria

• src/render/team-pick.ts no longer uses .length to compute candidate text widths.
• src/render/team-pick.ts does not call Bun.stringWidth, Bun.sliceAnsi, or Bun.stripANSI directly.
• src/render/team-pick.test.ts - new test cases:
  • Candidate with a wide character in the name (e.g. "squad-\u{1F916}") and a constrained maxWidth: visibleWidth(stripAnsi(output)) <= maxWidth.
  • Candidates with CJK characters (e.g. "\u524D\u7AEF-team") and a constrained maxWidth: same assertion.
  • A candidate long enough to require truncation at a grapheme cluster boundary: the cut does not split a multi-code-point sequence.
  • Unconstrained bar with Unicode team names: rendered output does not overflow.
• All existing tests in src/render/team-pick.test.ts still pass.
• bun test src/render/team-pick.test.ts passes.
• bun run lint and bun run format:check are clean.

Definition of Done

• PR reviewed and merged into feat/bun14-terminal.
• Zero lint errors, zero format diff, test suite green.