docs: add unified search documentation (#448)

* docs: add unified search documentation

- update keyboard-shortcuts.md with Cmd/Ctrl+K search shortcut
- create comprehensive search.md covering frontend state, backend API,
database indexes (pg_trgm), fuzzy matching, and scaling considerations

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* docs: add unified search to STATUS.md

- add recent work section for unified search (PR #447)
- move issue #440 from new features to working features
- add search docs to documentation links

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>

authored by zzstoatzz.io Claude and committed by GitHub bd7cd6ef 005f9c4d

Changed files
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docs
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STATUS.md
··· 47 48 ### December 2025 49 50 #### light/dark theme and mobile UX overhaul (Dec 2-3) 51 52 **theme system** (PR #441): ··· 257 - no AIFF/AIF transcoding support (#153) 258 259 ### new features 260 - - issue #440: unified search across tracks, artists, albums, and tags 261 - issue #146: content-addressable storage (hash-based deduplication) 262 - issue #155: add track metadata (genres, tags, descriptions) 263 - issue #334: add 'share to bluesky' option for tracks ··· 313 - ✅ share tracks via URL with Open Graph previews 314 - ✅ copyright moderation system with admin UI 315 - ✅ ATProto labeler for copyright violations 316 317 **albums** 318 - ✅ album database schema with track relationships ··· 450 - [queue design](docs/queue-design.md) 451 - [logfire querying](docs/logfire-querying.md) 452 - [moderation & labeler](docs/moderation/atproto-labeler.md) 453 454 --- 455
··· 47 48 ### December 2025 49 50 + #### unified search (PR #447, Dec 3) 51 + 52 + **what shipped**: 53 + - `Cmd+K` (mac) / `Ctrl+K` (windows/linux) opens search modal from anywhere 54 + - fuzzy matching across tracks, artists, albums, and tags using PostgreSQL `pg_trgm` 55 + - results grouped by type with relevance scores (0.0-1.0) 56 + - keyboard navigation (arrow keys, enter, esc) 57 + - artwork/avatars displayed with lazy loading and fallback icons 58 + - glassmorphism modal styling with backdrop blur 59 + - debounced input (150ms) with client-side validation 60 + 61 + **database**: 62 + - enabled `pg_trgm` extension for trigram-based similarity search 63 + - GIN indexes on `tracks.title`, `artists.handle`, `artists.display_name`, `albums.title`, `tags.name` 64 + 65 + **documentation**: `docs/frontend/search.md`, `docs/frontend/keyboard-shortcuts.md` 66 + 67 + --- 68 + 69 #### light/dark theme and mobile UX overhaul (Dec 2-3) 70 71 **theme system** (PR #441): ··· 276 - no AIFF/AIF transcoding support (#153) 277 278 ### new features 279 - issue #146: content-addressable storage (hash-based deduplication) 280 - issue #155: add track metadata (genres, tags, descriptions) 281 - issue #334: add 'share to bluesky' option for tracks ··· 331 - ✅ share tracks via URL with Open Graph previews 332 - ✅ copyright moderation system with admin UI 333 - ✅ ATProto labeler for copyright violations 334 + - ✅ unified search with Cmd/Ctrl+K (fuzzy matching via pg_trgm) 335 336 **albums** 337 - ✅ album database schema with track relationships ··· 469 - [queue design](docs/queue-design.md) 470 - [logfire querying](docs/logfire-querying.md) 471 - [moderation & labeler](docs/moderation/atproto-labeler.md) 472 + - [unified search](docs/frontend/search.md) 473 + - [keyboard shortcuts](docs/frontend/keyboard-shortcuts.md) 474 475 --- 476
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docs/frontend/keyboard-shortcuts.md
··· 8 9 ## available shortcuts 10 11 ### Q - toggle queue 12 13 **location**: `frontend/src/routes/+layout.svelte` ··· 77 - **space** - play/pause (when not focused on button) 78 - **arrow keys** - skip forward/back (context-aware) 79 - **shift + arrow** - navigate queue 80 - - **/** - focus search (common pattern) 81 - - **esc** - close overlays/modals 82 - **T** - cycle theme (dark/light/system) 83 84 ## design principles
··· 8 9 ## available shortcuts 10 11 + ### Cmd/Ctrl+K - open search 12 + 13 + **location**: `frontend/src/routes/+layout.svelte` 14 + 15 + opens the unified search modal for searching tracks, artists, albums, and tags. 16 + 17 + **behavior**: 18 + - **Cmd+K** on macOS, **Ctrl+K** on windows/linux 19 + - works from anywhere, including input fields (uses modifier key) 20 + - toggles search modal open/closed 21 + - focuses search input automatically on open 22 + 23 + **in-modal navigation**: 24 + - **arrow up/down** - navigate results 25 + - **enter** - select highlighted result 26 + - **esc** - close modal 27 + 28 + see [search.md](./search.md) for full documentation. 29 + 30 + --- 31 + 32 ### Q - toggle queue 33 34 **location**: `frontend/src/routes/+layout.svelte` ··· 98 - **space** - play/pause (when not focused on button) 99 - **arrow keys** - skip forward/back (context-aware) 100 - **shift + arrow** - navigate queue 101 + - **/** - focus search (alternative to Cmd/Ctrl+K) 102 - **T** - cycle theme (dark/light/system) 103 104 ## design principles
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docs/frontend/search.md
···
··· 1 + # unified search 2 + 3 + global search across tracks, artists, albums, and tags with fuzzy matching. 4 + 5 + ## usage 6 + 7 + **keyboard shortcut**: `Cmd+K` (mac) or `Ctrl+K` (windows/linux) 8 + 9 + the search modal opens as an overlay with: 10 + - instant fuzzy matching as you type 11 + - results grouped by type with relevance scores 12 + - keyboard navigation (arrow keys, enter, esc) 13 + - artwork/avatars displayed when available 14 + 15 + ## architecture 16 + 17 + ### frontend 18 + 19 + **state management**: `frontend/src/lib/search.svelte.ts` 20 + 21 + ```typescript 22 + import { search } from '$lib/search.svelte'; 23 + 24 + // open/close 25 + search.open(); 26 + search.close(); 27 + search.toggle(); 28 + 29 + // reactive state 30 + search.isOpen // boolean 31 + search.query // string 32 + search.results // SearchResult[] 33 + search.loading // boolean 34 + search.error // string | null 35 + ``` 36 + 37 + **component**: `frontend/src/lib/components/SearchModal.svelte` 38 + 39 + renders the search overlay with: 40 + - debounced input (150ms) 41 + - keyboard navigation 42 + - lazy-loaded images with fallback 43 + - platform-aware shortcut hints 44 + 45 + **keyboard handler**: `frontend/src/routes/+layout.svelte` 46 + 47 + ```typescript 48 + // Cmd/Ctrl+K toggles search from anywhere 49 + if ((event.metaKey || event.ctrlKey) && event.key.toLowerCase() === 'k') { 50 + event.preventDefault(); 51 + search.toggle(); 52 + } 53 + ``` 54 + 55 + ### backend 56 + 57 + **endpoint**: `GET /search/` 58 + 59 + ``` 60 + GET /search/?q=query&type=tracks,artists&limit=10 61 + ``` 62 + 63 + **parameters**: 64 + - `q` (required): search query, 2-100 characters 65 + - `type` (optional): filter by type(s), comma-separated: `tracks`, `artists`, `albums`, `tags` 66 + - `limit` (optional): max results per type, 1-50, default 20 67 + 68 + **response**: 69 + 70 + ```json 71 + { 72 + "results": [ 73 + { 74 + "type": "track", 75 + "id": 123, 76 + "title": "song name", 77 + "artist_handle": "artist.bsky.social", 78 + "artist_display_name": "artist name", 79 + "image_url": "https://...", 80 + "relevance": 0.85 81 + }, 82 + { 83 + "type": "artist", 84 + "did": "did:plc:...", 85 + "handle": "artist.bsky.social", 86 + "display_name": "artist name", 87 + "avatar_url": "https://...", 88 + "relevance": 0.72 89 + } 90 + ], 91 + "counts": { 92 + "tracks": 5, 93 + "artists": 2, 94 + "albums": 1, 95 + "tags": 0 96 + } 97 + } 98 + ``` 99 + 100 + **implementation**: `backend/src/backend/api/search.py` 101 + 102 + ### database 103 + 104 + **extension**: `pg_trgm` for trigram-based fuzzy matching 105 + 106 + **indexes** (GIN with `gin_trgm_ops`): 107 + - `ix_tracks_title_trgm` on `tracks.title` 108 + - `ix_artists_handle_trgm` on `artists.handle` 109 + - `ix_artists_display_name_trgm` on `artists.display_name` 110 + - `ix_albums_title_trgm` on `albums.title` 111 + - `ix_tags_name_trgm` on `tags.name` 112 + 113 + **migration**: `backend/alembic/versions/2025_12_03_..._add_pg_trgm_extension_and_search_indexes.py` 114 + 115 + ## fuzzy matching 116 + 117 + uses postgresql's `similarity()` function from `pg_trgm`: 118 + 119 + ```sql 120 + SELECT title, similarity(title, 'query') as relevance 121 + FROM tracks 122 + WHERE similarity(title, 'query') > 0.1 123 + ORDER BY relevance DESC 124 + ``` 125 + 126 + **threshold**: 0.1 minimum similarity (configurable) 127 + 128 + **scoring**: 0.0 to 1.0, where 1.0 is exact match 129 + 130 + **examples**: 131 + - "bufo" matches "bufo" (1.0), "bufo mix" (0.6), "buffalo" (0.4) 132 + - "zz" matches "zzstoatzz" (0.3), "jazz" (0.25) 133 + 134 + ## result types 135 + 136 + ### tracks 137 + 138 + - links to `/track/{id}` 139 + - shows artwork if available 140 + - subtitle: "by {artist_display_name}" 141 + 142 + ### artists 143 + 144 + - links to `/u/{handle}` 145 + - shows avatar if available 146 + - subtitle: "@{handle}" 147 + 148 + ### albums 149 + 150 + - links to `/u/{artist_handle}/album/{slug}` 151 + - shows cover art if available 152 + - subtitle: "by {artist_display_name}" 153 + 154 + ### tags 155 + 156 + - links to `/tag/{name}` 157 + - no artwork 158 + - subtitle: "{count} tracks" 159 + 160 + ## error handling 161 + 162 + **client-side validation**: 163 + - minimum 2 characters to search 164 + - maximum 100 characters (shows inline error) 165 + 166 + **api errors**: 167 + - 422: query validation failed 168 + - displayed as error message in modal 169 + 170 + **image loading**: 171 + - lazy loading via `loading="lazy"` 172 + - on error: hides image, shows fallback icon 173 + 174 + ## scaling 175 + 176 + pg_trgm with GIN indexes scales well: 177 + - handles millions of rows efficiently 178 + - index size grows ~3x text size 179 + - queries remain sub-millisecond for typical workloads 180 + 181 + current production scale (~100 entities) is trivial. 182 + 183 + ## future enhancements 184 + 185 + - search trigger button in header (for discoverability) 186 + - recent searches history 187 + - search within specific entity type tabs 188 + - full-text search with `tsvector` for longer content 189 + - search suggestions/autocomplete