docs(plans): add implementation plan for library summary replaces per-day

Also corrects the spec's chart library reference (Recharts, not
ECharts) and clarifies that the backend keeps the internal
animePerDay computation as an intermediate for animeCumulative,
only dropping it from the API response.
This commit is contained in:
2026-04-09 21:51:02 -07:00
parent 70d52248f8
commit 928a0d6b61
2 changed files with 1356 additions and 10 deletions

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