Per-user reading progress and uploader attribution.
Schema (migration 0011): `read_progress` table (one row per (user,
manga); chapter_id nullable on chapter delete) and nullable
`uploaded_by` columns on mangas + chapters with partial indexes
scoped to non-null rows.
Endpoints (all `/me/*`, auth-scoped):
- PUT `/v1/me/read-progress` upserts. FK violations + cross-manga
chapter ids both surface as 4xx (404 / 422) so the API can't be
used to write logically invalid rows.
- GET `/v1/me/read-progress` paged newest-first list.
- GET `/v1/me/read-progress/:manga_id` enriched with chapter_number
for the manga page's Continue CTA.
- DELETE `/v1/me/read-progress/:manga_id` idempotent.
- GET `/v1/me/uploads` interleaved manga + chapter uploads as a
tagged union; limit-only pagination.
Existing manga + chapter upload handlers stamp `uploaded_by`.
Frontend:
- Reader emits progress on mount + page change (debounce) and via
IntersectionObserver in continuous mode. High-water mark is seeded
from the persisted server value so re-opening a chapter doesn't
regress to page 1. Tab close survives via `sendBeacon` (fallback
`keepalive` fetch); SPA navigation flushes via regular fetch.
- Manga detail page shows "Continue reading Chapter N — page M"
above the chapters list, working even for mangas with >50
chapters.
- New `/profile/history` tab with reading history (clear-per-row,
inline error on failure) and uploads (mangas + chapters mixed
chronologically with type-aware rendering).
171 backend tests (incl. 16 history tests covering ownership, FK
race, cross-link guard, chapter SET NULL behaviour) and 97 frontend
tests + svelte-check clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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