feat(db): queries for the deleted-annotation history

ListDeletedAnnotationsForBook unions tombstoned highlights, notes, and
bookmarks for a user+book regardless of the sync TTL cutoff (the history
must show everything still restorable, not just recent deletes), with
display text, secondary text, color, and both timestamps.

Restore queries clear deleted/deleted_at (lossless — the row was soft-
deleted, never removed) and are scoped to the owning user and media item
so a restore can never touch another user's annotation.

Purge queries hard-delete an already-tombstoned row: the user-driven
counterpart of the TTL maintenance sweep, for explicit 'delete
permanently' actions from the history.

All six write queries are :execrows so callers can distinguish 'restored'
from 'nothing matched' without a follow-up read.

internal/database/queries/queries.sql

@@ -1027,6 +1027,87 @@ FROM media_bookmarks mb
 WHERE mb.media_item_id = $1 AND mb.user_id = $2 AND mb.deleted = TRUE AND mb.deleted_at > $3
 ORDER BY deleted_at DESC;
 
+-- ============================================
+-- ANNOTATION HISTORY (deleted-annotation archive)
+-- ============================================
+
+-- Lists every currently-tombstoned annotation for a book regardless of the
+-- tombstone TTL: this backs the book page's "recently deleted" history where
+-- users can restore or permanently remove entries. Rows whose tombstones have
+-- been purged by the daily maintenance sweep no longer exist at all.
+-- name: ListDeletedAnnotationsForBook :many
+SELECT
+    mh.id,
+    mh.dedup_key,
+    'highlight' as annotation_type,
+    mh.selection_text as display_text,
+    mh.note_text as secondary_text,
+    mh.color,
+    mh.deleted_at,
+    mh.created_at
+FROM media_highlights mh
+WHERE mh.media_item_id = $1 AND mh.user_id = $2 AND mh.deleted = TRUE
+UNION ALL
+SELECT
+    mn.id,
+    mn.dedup_key,
+    'note' as annotation_type,
+    mn.content as display_text,
+    NULL::text as secondary_text,
+    NULL::text as color,
+    mn.deleted_at,
+    mn.created_at
+FROM media_notes mn
+WHERE mn.media_item_id = $1 AND mn.user_id = $2 AND mn.deleted = TRUE
+UNION ALL
+SELECT
+    mb.id,
+    mb.dedup_key,
+    'bookmark' as annotation_type,
+    mb.title as display_text,
+    mb.notes as secondary_text,
+    NULL::text as color,
+    mb.deleted_at,
+    mb.created_at
+FROM media_bookmarks mb
+WHERE mb.media_item_id = $1 AND mb.user_id = $2 AND mb.deleted = TRUE
+ORDER BY deleted_at DESC;
+
+-- name: RestoreMediaHighlightByID :execrows
+UPDATE media_highlights SET
+    deleted = FALSE,
+    deleted_at = NULL,
+    last_modified_at = NOW()
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
+-- name: RestoreMediaNoteByID :execrows
+UPDATE media_notes SET
+    deleted = FALSE,
+    deleted_at = NULL,
+    last_modified_at = NOW()
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
+-- name: RestoreMediaBookmarkByID :execrows
+UPDATE media_bookmarks SET
+    deleted = FALSE,
+    deleted_at = NULL,
+    last_modified_at = NOW()
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
+-- Permanent removal from the history (distinct from the TTL-driven purge,
+-- which is maintenance). Scoped to the owning user and book.
+-- name: PurgeMediaHighlightByID :execrows
+DELETE FROM media_highlights
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
+-- name: PurgeMediaNoteByID :execrows
+DELETE FROM media_notes
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
+-- name: PurgeMediaBookmarkByID :execrows
+DELETE FROM media_bookmarks
+WHERE id = $1 AND user_id = $2 AND media_item_id = $3 AND deleted = TRUE;
+
 -- Refresh Tokens queries
 -- name: CreateRefreshToken :one
 INSERT INTO refresh_tokens (user_id, token, expires_at)