profile aggregation

Almost all of this is comments in ProfilePage.tsx. Those comments are the spec.

GitHub stats.totalSolved is commits. Coding cards drive “problems solved.” Dev cards never enter that sum. UI copy: commits and pull requests are engineering output, never mixed into problems solved.

• Problem solving: solved + contests
• Engineering: commits + PRs (fetchGitHubEngineering, not the card)
• Consistency: active days summed. Best/current streak is max across platforms, not a merged calendar streak

Not three circular gauges on /profile. A segmented band of easy/medium/hard from stats.byDifficulty. Circular meters (DifficultyMeter) are for per-platform pages.

• GitHub topicAnalysis is language percentages. Averaged across accounts that have data. Private-repo accounts with zeros are dropped so they do not dilute.
• Coding topicAnalysis is problem counts, merged, top 14. Dev cards excluded on purpose.

Prefer rating.history. If contest history is longer, use that. One contest is a single point. Filter: contests.rating != null || contests.rank.

Needs at least 3 coding platforms. Competitive axes = rating (max if stacked accounts). DSA axes = solved (sum if stacked). Each family normalized to its own max so 2000 rating does not crush 165 solved.

Card heatmaps are fetched as full history (view=all). Source toggle: all | coding | github. Range: last 365 or a calendar year. Merge is sum of counts per date. Hover breakdown keeps {platform, username, count}. Levels are fixed buckets 1 / 3 / 6 / 10, not per-max quartiles.

UniversalHeatmap on deep dives is a different widget: local ymd() to avoid UTC off-by-one, GitHub year-keyed calendars, quartile levels. Do not describe one heatmap as if there were only one.

MeasuredChart uses ResizeObserver because Recharts ResponsiveContainer measures 0 under React 19 StrictMode double-mount.

Long URL = window.location.href. Short URL = upsert primary config, copy /{claimedUsername}. There is no /s/:code anymore. The drop migration removed short_links. The reserved-name widen stayed.