# Notes

**Obsidian-style** knowledge graph with `[[wikilinks]]`, backlinks,
graph visualization, and folder organization. Notes are user-scoped
(personal notebook). Future: channel-scoped notes for workflow
artifacts.

### CRUD

```
GET    /notes                       → paginated list of noteListItem
POST   /notes                       ← { "title", "content", "folder" }
GET    /notes/:id                   → full note object
PUT    /notes/:id                   ← { "title", "content", "folder" }
DELETE /notes/:id
```

Note object:

```json
{
  "id": "uuid",
  "user_id": "uuid",
  "title": "Meeting Notes",
  "content": "# Meeting Notes\n\nDiscussed [[Project Alpha]]...",
  "folder": "work",
  "source_message_id": "uuid|null",
  "created_at": "...",
  "updated_at": "..."
}
```

`source_message_id` links a note back to the chat message that
created it (provenance for AI-generated notes).

`noteListItem` is the same but with `content` truncated or omitted.

### Search

**Full-text search:**

```
GET /notes/search?q=project+alpha
```

Uses `plainto_tsquery` (Postgres) or `LIKE` fallback (SQLite).
Returns `{ "data": [searchResult objects] }` with match highlights.

**Title search** (lightweight, for wikilink autocomplete):

```
GET /notes/search-titles?q=proj
```

Returns `{ "data": [{ "id", "title" }] }`.

### Graph

**Full graph topology:**

```
GET /notes/graph
```

```json
{
  "nodes": [{ "id": "uuid", "title": "Note Title" }],
  "edges": [{ "source": "uuid", "target": "uuid" }],
  "unresolved": [{ "source": "uuid", "target_title": "Missing Note" }]
}
```

Edges are directed: source contains `[[target_title]]`. Unresolved
edges have a `target_title` but no matching note (dangling wikilink).
When a note with that title is created, the edge auto-resolves.

**Backlinks** (who links to this note):

```
GET /notes/:id/backlinks
```

Returns `{ "data": [note objects] }` — all notes containing
`[[this note's title]]`.

### Folders

```
GET /notes/folders
```

Returns `{ "folders": ["work", "personal", "archive"] }` — distinct
folder values across all user notes.

### Bulk Operations

```
POST /notes/bulk-delete
```

```json
{ "ids": ["uuid-1", "uuid-2"] }
```

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