fix(output): honor no-color in status bar

[dvd233]

Summary

• honor the existing --no-color setting in the interactive request status bar
• keep the status bar's text and credential masking unchanged when colors are disabled
• add regression coverage for colored and uncolored TTY output

Why

Issue #258 reports that mmx quota show --no-color removes ANSI styling from the quota table but leaves the request status bar colored. maybeShowStatusBar() assembled ANSI sequences unconditionally, even though the CLI already exposed config.noColor for the same command.

What changed

The status bar now routes each styled fragment through a small local helper. With config.noColor enabled it emits the same text without escape sequences; normal TTY output keeps the existing styling and layout.

Validation

• bun test test/output/status-bar.test.ts — 2 passed
• bun run typecheck — passed
• bun run lint — no errors; one pre-existing warning in test/sdk/speech.test.ts
• git diff --check — passed

Full bun test was also run. The existing Windows/runner-dependent suite has 12 unrelated failures involving proxy/network guidance, agent file permissions, and a download writer-error simulation; the new status-bar tests pass.

Fixes #258

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[dvd233]

Closing this PR because Issue #258 explicitly asks contributors to obtain maintainer permission before starting an implementation, and no approval comment is present. The issue remains open for a policy-compliant contribution after maintainer confirmation; no code was merged.