Codebase map

Area	Path
Components	`src/components/`
Hooks	`src/hooks/`
Data layer	`src/db/` — Instant client, schema, `transaction.js`, `tx/`
Board domain	`src/board/` — models, import/export, workspace bootstrap
Grid geometry	`src/grid/` — drag, gestures, layout, packing
Sharing / roles	`src/sharing/` — share links, roles, member policy
Theme	`src/theme/`
Server-shared	`src/server/` — REST, API tokens, OG meta (used by `api/`, `middleware.js`)
Generic helpers	`src/lib/` — time, config, links, command-result
Styles	`src/styles/` (+ `tokens.stylex.js`)
Tests	`test/*.test.js`
Server routes	`api/`, `middleware.js`
Docs site	`docs/` (this Fumadocs app)

Notable naming note

Older README text mentioned src/db.js. The Instant client is src/db/instant.js.