# Changelog v0.3.78 - 2026-05-28

### Added
- **Real-Answer Benchmark feature** — Press `Ctrl+A` to run a live completion benchmark on the currently selected model. Measures actual wall-clock response time and tokens-per-second (TPS) with a real chat completion request (`"Why is the sky blue? Answer in exactly one short sentence."`). Results appear in the new **Answer Speed** column as `4.3s / 13 TPS`.
- New `Answer Speed` column in the TUI table, positioned after the Uptime column. Defaults to `—`, shows a green spinner while benchmarking, and displays compact error codes (`ERR`, `TIMEOUT`, `401`, `429`) on failure.
- New module `src/benchmark.js` with lightweight, native Node.js benchmark logic:
  - `benchmarkModel({ apiKey, modelId, providerKey, url })` — sends one completion, measures time, parses `usage.completion_tokens` with a `Math.ceil(outputText.length / 4)` fallback clearly labeled as an estimate.
  - Guards against division-by-zero and unsupported providers (rovo, gemini, opencode-zen return `UNSUPPORTED`).
  - Respects existing API key handling and fails gracefully on missing credentials, rate limits, or timeouts.
- Benchmark state stored in TUI state keyed by `${providerKey}/${modelId}`, so results survive re-renders and table refreshes.
- `Ctrl+A` documented in the Help overlay (`I` key).

### Changed
- Responsive column breakpoints adjusted to accommodate the new `Answer Speed` column (14 cols). Progressive hiding order: Rank → Answer Speed → Up% → Tier → Stability. Compact mode still active at ~163+ cols.
- **Removed the startup Shell Environment popup** — The modal that asked existing users whether to export API keys to shell on every launch has been eliminated. It was intrusive and re-appeared even after being skipped.
- Shell Environment setup is now **on-demand via Settings (P key)**. The "Shell Env Export" row shows:
  - `🔘 Not configured — Enter to set up` for users who never configured it (previously shown the popup)
  - `✅ Enabled` when active
  - `❌ Disabled` when explicitly turned off
- New users who add their first API key still get shell env enabled automatically (zero-friction default). Existing users can press `Enter` on the Settings row to enable it at any time.