Port upstream 0.55.0: OpenRouter completed-day spend

[Finesssee]

Summary

• port upstream CodexBar v0.55.0 OpenRouter Activity fix from Fix OpenRouter completed-day activity query steipete/CodexBar#3138
• query the latest completed UTC day instead of the current in-progress day
• align the 30-day parser window to that completed-day boundary and reject current-day rows from spend totals

Upstream evidence

• target release: v0.55.0
• upstream commit: b843190cb / Fix OpenRouter completed-day activity query steipete/CodexBar#3138

Validation

• C:/Users/mac/.cargo/bin/cargo.exe test -p codexbar openrouter -> 15 passed
• focused rustfmt on the two touched OpenRouter files
• git diff --check -> pass

Scope

Isolated provider correctness port. No UI, version bump, or unrelated provider changes.

[Finesssee]

Thermo-nuclear review

No material code-quality findings. The completed-day rule is expressed once in the request and once at the parser boundary, keeps the exact 30-day window explicit, and updates the existing tests rather than introducing a parallel accounting path.

Verdict: APPROVED.