Context

PR #2191 wholesale-restored src/commands/status.scan.ts, status.command.ts, status.summary.ts, and sessions.ts. This discarded performance and feature improvements from v2026.3.1/v2026.3.2.

Audit report: hq/engineering/notes/post-remediation-audit-b3b4.md

Findings

Performance (HIGH)

1. DeferredResult<T> pattern (status.scan.ts, v2026.3.1): Generic deferred result for parallelizing async ops — launch early, await later. Reusable utility.

2. scanStatusJsonFast fast path (status.scan.ts, v2026.3.1): Dedicated optimized path for --json mode that avoids progress spinner overhead and runs operations more efficiently in parallel.

3. Parallelized async operations (status.scan.ts, v2026.3.1): Launches tailscaleDnsPromise, updatePromise, agentStatusPromise, summaryPromise concurrently before awaiting. Reduces status scan wall time.

4. Security audit parallelization (status.command.ts, v2026.3.1): JSON mode runs scan + security audit in Promise.all. Non-JSON uses sequential with progress. Reduces status --json latency.

Features (MEDIUM)

5. installKind, gitTag, gitBranch in status (status.command.ts, v2026.3.1): Shows how the tool was installed and git details in status output.

6. formatGitInstallLabel (status.command.ts, v2026.3.1): Git install label row in human-readable status table.

7. Model-aware context token resolution (sessions.ts + status.summary.ts, v2026.3.2): lookupContextTokens(model) replaces hardcoded 200K. Different models have different context windows (128K, 200K, 1M). Fixes incorrect context token display.

8. Configured model display (status.summary.ts, v2026.3.2): Shows actual configured model name instead of "unknown" in status summary.

Code Quality (LOW)

9. resolveGatewayProbeSnapshot (status.scan.ts, v2026.3.2): DRY extraction — gateway probe setup logic.

10. resolveChannelsStatus (status.scan.ts, v2026.3.2): DRY extraction — channel status fetch logic.

11. groupChannelIssuesByChannel (status.command.ts, v2026.3.2): Extracts inline IIFE grouping logic.

12. resolveSessionStoreTargetsOrExit (sessions.ts, v2026.3.2): Replaces try/catch pattern with exit-on-failure function.

Exit Criterion

Status scan JSON mode uses parallelized operations. lookupContextTokens resolves per-model. Existing tests pass.