feat(api): expose frontend-safe management capabilities

skills/database-operation/SKILL.md

@@ -156,7 +156,7 @@ python scripts/mp-db.py write "UPDATE subscribe SET state = 'S' WHERE id = 123"
 - Purpose: Stores media identity, torrent, downloader, user, and recognition context for submitted downloads.
 - Useful queries: Reviewing download history or tracing a media identity or hash back to its source.
 - Write boundary: Written by the download use case; delete or correct records through the download-history API.
-- Columns: `id`, `path`, `type`, `title`, `year`, `media_source`, `media_id`, `music_type`, `seasons`, `episodes`, `image`, `poster`, `downloader`, `download_hash`, `torrent_name`, `torrent_description`, `torrent_site`, `userid`, `username`, `channel`, `date`, `note`, `media_category`, `episode_group`, `custom_words`
+- Columns: `id`, `path`, `type`, `title`, `year`, `media_source`, `media_id`, `music_type`, `seasons`, `episodes`, `image`, `poster`, `downloader`, `download_hash`, `torrent_name`, `torrent_description`, `torrent_site`, `userid`, `username`, `channel`, `date`, `note`, `media_category_id`, `media_category`, `classification_rule_id`, `classification_policy_revision`, `classification_source`, `episode_group`, `custom_words`
 
 ### `mediaserveritem`
 - Purpose: Stores the local index and canonical media identity projected from media-server libraries.
@@ -228,13 +228,13 @@ python scripts/mp-db.py write "UPDATE subscribe SET state = 'S' WHERE id = 123"
 - Purpose: Stores active movie, TV, or music subscriptions, filters, progress, and download targets.
 - Useful queries: Inspecting state, missing episodes/tracks, quality rules, site scope, and match progress.
 - Write boundary: Create, update, search, or delete through the subscription API to preserve state-machine consistency.
-- Columns: `id`, `name`, `year`, `type`, `keyword`, `media_source`, `media_id`, `music_type`, `total_tracks`, `season`, `poster`, `backdrop`, `vote`, `description`, `filter`, `include`, `exclude`, `quality`, `resolution`, `effect`, `audio_quality`, `audio_format`, `min_bitrate`, `min_bit_depth`, `min_sample_rate`, `total_episode`, `start_episode`, `lack_episode`, `note`, `state`, `last_update`, `date`, `username`, `sites`, `downloader`, `best_version`, `best_version_full`, `current_priority`, `current_audio_format`, `current_bitrate`, `current_bit_depth`, `current_sample_rate`, `episode_priority`, `save_path`, `search_imdbid`, `manual_total_episode`, `custom_words`, `media_category`, `filter_groups`, `episode_group`
+- Columns: `id`, `name`, `year`, `type`, `keyword`, `media_source`, `media_id`, `music_type`, `total_tracks`, `season`, `poster`, `backdrop`, `vote`, `description`, `filter`, `include`, `exclude`, `quality`, `resolution`, `effect`, `audio_quality`, `audio_format`, `min_bitrate`, `min_bit_depth`, `min_sample_rate`, `total_episode`, `start_episode`, `lack_episode`, `note`, `state`, `last_update`, `date`, `username`, `sites`, `downloader`, `best_version`, `best_version_full`, `current_priority`, `current_audio_format`, `current_bitrate`, `current_bit_depth`, `current_sample_rate`, `episode_priority`, `save_path`, `search_imdbid`, `manual_total_episode`, `custom_words`, `media_category_id`, `media_category`, `filter_groups`, `episode_group`
 
 ### `subscribehistory`
 - Purpose: Stores snapshots of completed or archived subscriptions and their final filter state.
 - Useful queries: Auditing historical subscriptions, media identity, completion criteria, and filter configuration.
 - Write boundary: Generated by subscription completion and archival; restore or delete through its business API.
-- Columns: `id`, `name`, `year`, `type`, `keyword`, `media_source`, `media_id`, `music_type`, `total_tracks`, `season`, `poster`, `backdrop`, `vote`, `description`, `filter`, `include`, `exclude`, `quality`, `resolution`, `effect`, `audio_quality`, `audio_format`, `min_bitrate`, `min_bit_depth`, `min_sample_rate`, `total_episode`, `start_episode`, `date`, `username`, `sites`, `best_version`, `best_version_full`, `current_priority`, `current_audio_format`, `current_bitrate`, `current_bit_depth`, `current_sample_rate`, `episode_priority`, `save_path`, `search_imdbid`, `custom_words`, `media_category`, `filter_groups`, `episode_group`
+- Columns: `id`, `name`, `year`, `type`, `keyword`, `media_source`, `media_id`, `music_type`, `total_tracks`, `season`, `poster`, `backdrop`, `vote`, `description`, `filter`, `include`, `exclude`, `quality`, `resolution`, `effect`, `audio_quality`, `audio_format`, `min_bitrate`, `min_bit_depth`, `min_sample_rate`, `total_episode`, `start_episode`, `date`, `username`, `sites`, `best_version`, `best_version_full`, `current_priority`, `current_audio_format`, `current_bitrate`, `current_bit_depth`, `current_sample_rate`, `episode_priority`, `save_path`, `search_imdbid`, `custom_words`, `media_category_id`, `media_category`, `classification_rule_id`, `classification_policy_revision`, `classification_source`, `filter_groups`, `episode_group`
 
 ### `subscriptionsearchbatch`
 - Purpose: Stores durable subscription search batches, source, aggregate state, counts, and cancellation requests.
@@ -270,7 +270,7 @@ python scripts/mp-db.py write "UPDATE subscribe SET state = 'S' WHERE id = 123"
 - Purpose: Stores transfer source, destination, mode, media identity, download linkage, and outcome.
 - Useful queries: Reviewing success/failure history, destination paths, media classification, and download linkage.
 - Write boundary: Written by transfer settlement; delete or retry through transfer-history business APIs.
-- Columns: `id`, `transfer_task_id`, `transfer_settlement_revision`, `src`, `src_storage`, `src_fileitem`, `dest`, `dest_storage`, `dest_fileitem`, `mode`, `type`, `category`, `title`, `year`, `media_source`, `media_id`, `music_type`, `total_tracks`, `audio_format`, `audio_lossless`, `bit_depth`, `sample_rate`, `bitrate`, `seasons`, `episodes`, `image`, `downloader`, `download_hash`, `status`, `errmsg`, `date`, `files`, `episode_group`
+- Columns: `id`, `transfer_task_id`, `transfer_settlement_revision`, `src`, `src_storage`, `src_fileitem`, `dest`, `dest_storage`, `dest_fileitem`, `mode`, `type`, `media_category_id`, `category`, `classification_rule_id`, `classification_policy_revision`, `classification_source`, `title`, `year`, `media_source`, `media_id`, `music_type`, `total_tracks`, `audio_format`, `audio_lossless`, `bit_depth`, `sample_rate`, `bitrate`, `seasons`, `episodes`, `image`, `downloader`, `download_hash`, `status`, `errmsg`, `date`, `files`, `episode_group`
 
 ### `transferpending`
 - Purpose: Durably stores pending transfer input, plans, checkpoints, leases, retries, and manual review state.