test(ui): COVERAGE.md — episode-collection sweep candidates (item 2.3)

tests/ui/COVERAGE.md

@@ -52,3 +52,22 @@ Two specs added against a RUNNING dev server (skip unless
 - `add_order_probe.spec.ts` — the add-modal "Download order" select
   reveals when "Download all episodes now" is checked (CSS sibling
   selector; the checkbox must stay a sibling of `.podcast-add-order`).
+
+## 2026-10-30 — episode collections (plan item 2.3) — sweep candidates
+
+New controls the Playwright sweep should cover once it lands:
+
+- Collection picker modal: Books/Episodes tab pair — episodes tab loads
+  `?scope=episodes`, selection persists across tab switches and htmx
+  swaps (shared bookPicker store).
+- Collection detail: episode rows (play link carries
+  `?queue=collection:<id>`; chain hops keep the param), "Not
+  downloaded" badge, "Unavailable / Remove entry" hint row for
+  collected-but-unsubscribed feeds (All Libraries view), header "Play
+  as Sequence" button.
+- Player (collection mode): order dropdown + reverse button ABSENT
+  (feed-mode only); "Ep N/M" reflects collection order; auto-advance
+  follows the collection chain, and back-to-detail exits to the
+  collection page.
+- API-level pins live in `TestPodcastEpisodeCollections` (7 subtests
+  incl. the family-lens auditor case) + `TestPodcastPlayerOrderControl`.