github/main: 62ee1039960d0adb70347ffd252faf6783116aa9
pr before fix: 00636dbf1a89af079cf3da13f8de482b74e163ab
verified fix: d3763b73ef38aa31750725a550140132e0a4410a

Main: vp i; vp run dev (isolated /home/user/main/.t3)
serverPort=16733 webPort=8693
Web UI -> Add project -> Local folder /home/user/usage-verification
Web UI -> Codex GPT-6.1-Sol -> submit prompt
Response: usage verification baseline.
Usage -> Tokens: four periods; All time absent.

PR: vp i; vp run dev --home-dir /home/user/pr31451-state
serverPort=13773 webPort=5733
Web UI -> Add project -> Local folder /home/user/usage-verification
Web UI -> Codex GPT-6.1-Sol -> submit prompt
Response: usage verification on PR head.
Usage -> All time: totals 2.84M, chart paths empty on contributor head.
Fix: single-point chart draws a full-width line and area.
Matching cached data after fix: totals 2.84M; visible chart path:
M0.00,21.50 C320.00,21.50 640.00,21.50 960.00,21.50

Restarted fixed PR with same isolated state; real Codex follow-up:
Response: final usage verification passed.
Refresh -> 7.16M tokens, 5 real sessions (includes this verification's agents).
All-time saved preference: {"metric":"tokens","windowDays":0}
Reload restored All time.
Ctrl+Shift+5 -> All time aria-pressed=true
Ctrl+Shift+1 -> Past 24h aria-pressed=true, hourly chart has two paths
Limits -> period controls hidden; Tokens restored period controls.
Narrow 900x900 -> period select 7 days -> All time worked.
Hide Codex -> 0 sessions, 30-day fallback, No activity in this window.
Restore Codex -> real totals returned.

Remote Blacksmith:
121 focused existing tests passed on contributor head.
vp run check:changed a7fd4326cffd1f69f32e125a1fa4400b4ac61f7c
pass format; lint; knip; graphql; typecheck (37 packages);
pass tests (7 files); react compiler (5 files).

Not exercised with real old data: history older than 92 days, cross-year range.
Existing focused tests passed for those cases; no fabricated history was used.