[LunaUrsa]

Summary

Closes #303.

Dose chart (#303). addDosages now parses each dose with a new parseDoseRangeMg util:

• Converts ng, ug/µg, mg and g to milligrams before plotting, so 800-1500ug (0.8–1.5) and 1.5-3mg share one axis.
• Reads both endpoints when each carries its own unit (325mg-650mg).
• Leaves out of the chart anything that is not a bounded mass range: open-ended doses (3mg+), rates (25-50ug/hr), per-kg doses, single values, unitless and reversed ranges. Open-ended doses are no longer drawn with an invented 1.5× upper bound.
• The table still shows every dose exactly as written. The chart is hidden when nothing can be plotted, and a caption explains that it shows bounded mg ranges only.

Unreachable code removed (to keep branch coverage meaningful under the 90% CI gate from #311):

• DrugInfo.tsx: null guards in addDurations and the duration tooltip. durationTiming only ever holds defined entries.
• appeal.tsx: the "unknown" ban-status fallback (hasAppeal implies appeal is set), and the status checks in canReappeal / canShowReminder (callers already filter by DENIED / RECEIVED).
• appeal.tsx: the "Appeal Accepted!" card inside the has_appeal view. Reviewer note: it could only appear for a moment right after submitting a new appeal, while latestAppeal still held the previous accepted one and before checkBan() refreshed it. Showing "Appeal Accepted / Join Discord" there was misleading. Accepted appeals still show in the not-banned view.

Appeal token refresh. Concurrent callers share one pending refresh promise (dropped the separate isRefreshingRef flag), and the refresh interval lives in the effect's scope rather than a ref. Behavior is unchanged; new tests cover a slow ban check overlapping a refresh, and a submission sharing a background refresh.

Tests. New and extended tests bring statements, branches, functions and lines to 100%. DrugInfo.test.tsx keeps the literal tooltip assertion style from d391a7c, updated for the mg values.

Type of change

• Bug fix
• New feature
• Documentation
• Refactor / chore
• Other (describe above)

Checklist

• Branch is up to date with uat (this PR targets uat, not main)
• Lint passes (npx eslint .) (0 errors; 1 existing warning tracked in Two react-hooks/set-state-in-effect warnings (WEB-025) #286)
• npx next build succeeds locally (also type-checks)
• No secrets, .env values, or user data included

Test plan

• npm run test:coverage: 29 suites, 152 tests pass; 100% statements, branches, functions and lines.
• parseDoseRangeMg has fixtures for every form in Factsheet dose chart compares incompatible units and misparses ranges #303 (800-1500ug, 1.5-3mg, 325mg-650mg, ug/hr) plus mixed µg/mg, open-ended, per-kg, reversed and overflow cases.
• npx eslint . and npx next build pass.
• Not checked in a browser: the factsheet dose chart and the appeal flow were verified through the test suite only.

🤖 Generated with Claude Code