Routing proof: summarize token usage (traced repeat)

[0xroylee]

role-proof-repeat-1 — Routing proof: summarize token usage (traced repeat)

Plan: sha256:aca6b0f2b722ccb42961b2db3723fd538bf6d0203b91520697e3217b227f901d
Cycle: 2026-W37
Priority: 1
Risk: low
Token ceiling: 150000

Goal

Repeat mixed-effort acceptance with diagnostic tracing; earlier failed checkpoint remains unchanged

Problem

acceptance/routing/usage.ts is an unimplemented fixture

Desired outcome

Implement summarizeUsage: sum inputTokens + outputTokens; cachedInputTokens is a subset, sum it separately without adding it to total. incomplete is true if any known flag is false, including zero-token records. Empty array returns zero totals and incomplete false. Do not mutate input arrays or records. Match unchanged check-usage.ts cases.

Scope

• acceptance/routing/usage.ts

Non-goals

• Only edit the named implementation file. Do not change acceptance scripts, workflows, dependencies, or other code. Do not commit or push manually; Roc handles commits and PRs.

Acceptance criteria

• bun acceptance/routing/check-usage.ts passes unchanged

Validation

• bun acceptance/routing/check-usage.ts
• bunx --no-install biome check acceptance/routing/usage.ts

Dependencies

• None

[0xroylee]

Approved for Roc execution.

[0xroylee]

Roc execution

Task: #76
Phase: done
Updated: 2026-09-09T14:23:09.600Z
PR: #77