Batch H1 steps 1-2 of the hardening plan. Wire contracts frozen; the
pinned shapes are unchanged modulo the whitelisted additive GET keys
(docs/contract_pins.md).
1. One canonical request struct. The web PUT binds SaveProgressRequest
directly (identity/attribution fields are json:"-" so they stay
server-owned) and copies its server fields once — the hand-rolled DTO
and the 20-line field-copy block are gone. Parse set for existing
clients is IDENTICAL to the old DTO (verified in web/src: the ebook
reader sends percentage/current_page/total_pages/reading_mode/epubcfi/
context_text/chapter/zoom_level — reader.ts:3113-3143; the audiobook
reader sends percentage/chapter/audio_offset_seconds/elapsed_seconds/
reading_mode — audio.ts:518-520).
2. GET /api/media-items/:id/progress now serializes through one
row-struct-driven builder instead of a hand-map, so a row column
cannot be silently forgotten again (the audio_offset_seconds
omission). Existing keys are verbatim; the row already carried
audio_offset_seconds/reading_mode/viewport_x-y/zoom_level/
scroll_position_x-y/panel_number and they surface as WHITELISTED
additive keys. The web audiobook reader already reads
audio_offset_seconds (audio.ts:219) — with the key absent,
durationless books resumed at chapter start (offset always 0); they
now resume correctly. The conditional context_text bolt-on and the
server-derived css_selector/anchor_href block are unchanged —
restore precedence stays percentage-first, never re-derived.
Batch H0 of the hardening plan: freeze the JSON key SETS of every
load-bearing surface so H1-H7 can only change them additively.
- cmd/server/tests/contract_pins_test.go: 14 tests / ~30 subtests pinning
progress GET+PUT, the KOReader plugin surfaces (progress push/pull,
library, bookmarks), the Kobo adapter shapes (initialization, markup,
sync-from-server), collections detail all four branches + preview,
series JSON, search rows, dashboard sections, media list BOTH branches
(raw sqlc rows vs resolved 38-key map), and SSR smoke for
bookshelf/collections/series/tags.
- docs/contract_pins.md: the pinned-shape inventory + the rule that a
batch widening a shape must widen the pin and this doc in one commit.
Suite is green on the unmodified tree at b4ae423. KOReader/Kobo/progress
pins are the hard freeze (the plugin is an external client).
John O'Keefe