chore: address final review must-fix items

userscript/AGENTS.md

@@ -3,10 +3,10 @@ Guidance for OpenCode (and Claude Code) working under `userscript/`. See root `A
 ### Userscript structure (single IIFE, `manga-bookmark.user.js`)
 
 1. **Site adapters** — one per host, `detect(location, document)` return page `type` + IDs. Identify type/IDs from **URL regex** (most stable); pull `title`/`cover` from **`og:title`/`og:image` meta tags**, not CSS classes.
-2. **API client** — `apiGet/apiPut/apiDelete` with bearer header; `localStorage` key `mangabm:cache` for instant render + offline fallback.
+2. **API client** — `apiGet/apiPut/apiDelete` with bearer header; `localStorage` key `bmgr:manga:cache` for instant render + offline fallback.
 3. **Progress logic** — auto-upsert `last_chapter` only when `chapterNum >= stored last_chapter_num` (re-reading old chapters must not regress progress; unparseable -> set current). Manual panel override forces any value.
 4. **Retry queue** — every write go through `pushBookmark`/`pushDelete`, so
-   failed mutation park in `localStorage` (`mangabm:queue`) and replayed on
+   failed mutation park in `localStorage` (`bmgr:manga:queue`) and replayed on
    next navigation, reconnect, or `refresh()`. Entries are markers
    (`{key, op, sendStatus, attempts}`), never payloads — body read from
    cache at send time, so one entry per key give ordering and coalescing for