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The post-aware on-ramp + the data behind the missing Series browse view. - page_number_parser: conservative stated-page parser (pages 9-12 / page 5 / [3/8] / 3 of 8), keyword-gated to avoid false positives. Pure + unit-tested. - SeriesService.promote_post_to_series: a self-contained post becomes its own series — series tag named after the post, one chapter, the post's images as pages (ordered by capture order; stated pages parsed from title/description). - SeriesService.add_post_as_chapter: append a post as the next chapter of an existing series, titled after the post and slotted by parsed page number (a "pages 1-4" post lands ahead of the "pages 9-12" chapter). - SeriesService.list_series: browse cards — cover thumb, artist, chapter/page counts, gap flag, last-updated; sort recent|name|size + filter by artist. - API: GET /api/series, POST /api/series/from-post, POST /api/series/<id>/add-post. - Resolver uses ImageRecord.primary_post_id (same linkage the posts feed renders). Frontend (Add-to-series control + Series view + nav) lands next. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>