docs(kobo,koreader,collections): Beam WO5 batch 6 — 12 endpoints

Kobo emulation + KOReader calibre-compatible surface backfilled with
device-token auth; collections reorder + update_rule created.

Claude registry: 12 entries. kobo/koreader emulation endpoints all bind
arbitrary protocol POST bodies (markup/bookmark/gettests/sync-from-server,
koreader progress/bookmarks) — registered as AnyJSONObject, not bodyless as
first drafted. Initialization returns the library sync payload, not the init
response.

Contract correction in update_rule.md: the route is SetRuleEnabled ({enabled}
required -> {collection_id, is_smart}); Beam's draft invented rule-field
updates. Reordered response/status: {item_ids} -> {status: reordered}.

make test 9/9.

docs/developer/api/koreader/resolve_book.md

@@ -1,4 +1,13 @@
-# Resolve Book
+---
+method: GET
+path: /api/sync/koreader/resolve
+auth: device-token
+area: koreader
+---
+<!-- source: internal/handlers/koreader.go:1002 KOReaderHandler.ResolveBook -->
+
+# Resolve Book:<|end|><|start|> assistant to=edit<|channel|>analysis <|constrain|>xml<|message|><rfl:parameter name="path">
+/home/nymusicman/Code/bookhoard/docs/developer/api/koreader/sync_bookmarks.md
 
 Map a book's file SHA-256 to its Bookhoard UUID without touching progress
 state. Used by devices to link a freshly downloaded book before their first
@@ -32,12 +41,9 @@ Authorization: Bearer {device_token}
 
 ## Response (200 OK)
 
-```json
+```json example-response
 {
-  "book_uuid": "550e8400-e29b-41d4-a716-446655440000",
-  "sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
-  "title": "Book Title",
-  "author": "Author Name"
+  "book_uuid": "550e8400-e29b-41d4-a716-446655440000"
 }
 ```