initial commit on Federted servers

db/migrations/002_collections.sql

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+-- 002_collections.sql — collections, typed properties, memberships and saved
+-- views (Notion-like upgrades phase 2: N-01/N-02/N-03 data layer).
+--
+-- Design decisions (computer_notion_upgrades.md §4, locked before shipping):
+-- * Membership is contextual: the same bookmark can belong to many
+--   collections with independent property values; removing a membership or a
+--   whole collection never touches the bookmark (N-01).
+-- * Membership never broadens access: item reads re-check BookmarkVisible at
+--   query time, and creation validates visibility (decision #4, N-08).
+-- * Views are queries, not copies: filters/sorts/grouping live on the view
+--   and never duplicate record data (decision #3).
+-- * Deviation from the proposal draft, per its own API rule ("PATCH must
+--   require the expected version", the DATA-05 lesson): CollectionProperty,
+--   CollectionItem and CollectionView carry a version column bumped by every
+--   mutating PATCH; a stale base is a 409. Property rows also gained
+--   updatedAt for the same reason.
+-- * Property types are a CHECK constraint, not a Postgres enum (easier to
+--   evolve). RELATION is reserved in the constraint but the API rejects it
+--   until cross-collection access checks are designed (draft §6 open issue).
+-- * Date semantics (decision #7): DATE properties declare config.mode
+--   'date' (YYYY-MM-DD, calendar-day stable across timezones) or 'datetime'
+--   (RFC3339, normalized to UTC on write). Values live in CollectionItem.
+--   propertyValues (JSONB keyed by property id) and are validated server-side
+--   against CollectionProperty on every write.
+
+CREATE TABLE IF NOT EXISTS "Collection" (
+  id text PRIMARY KEY,
+  name text NOT NULL,
+  description text,
+  icon text,
+  "ownerId" text NOT NULL REFERENCES "User"(id) ON DELETE CASCADE,
+  version integer NOT NULL DEFAULT 1,
+  "createdAt" timestamptz NOT NULL DEFAULT now(),
+  "updatedAt" timestamptz NOT NULL DEFAULT now()
+);
+CREATE INDEX IF NOT EXISTS "Collection_ownerId_idx" ON "Collection"("ownerId");
+
+CREATE TABLE IF NOT EXISTS "CollectionProperty" (
+  id text PRIMARY KEY,
+  "collectionId" text NOT NULL REFERENCES "Collection"(id) ON DELETE CASCADE,
+  name text NOT NULL,
+  type text NOT NULL CHECK (type IN ('TEXT','NUMBER','SELECT','MULTI_SELECT','DATE','CHECKBOX','URL','RELATION')),
+  position integer NOT NULL DEFAULT 0,
+  config jsonb NOT NULL DEFAULT '{}',
+  version integer NOT NULL DEFAULT 1,
+  "createdAt" timestamptz NOT NULL DEFAULT now(),
+  "updatedAt" timestamptz NOT NULL DEFAULT now(),
+  UNIQUE ("collectionId", name)
+);
+
+CREATE TABLE IF NOT EXISTS "CollectionItem" (
+  id text PRIMARY KEY,
+  "collectionId" text NOT NULL REFERENCES "Collection"(id) ON DELETE CASCADE,
+  "bookmarkId" text NOT NULL REFERENCES "Bookmark"(id) ON DELETE CASCADE,
+  propertyValues jsonb NOT NULL DEFAULT '{}',
+  position integer NOT NULL DEFAULT 0,
+  version integer NOT NULL DEFAULT 1,
+  "addedAt" timestamptz NOT NULL DEFAULT now(),
+  "updatedAt" timestamptz NOT NULL DEFAULT now(),
+  UNIQUE ("collectionId", "bookmarkId")
+);
+CREATE INDEX IF NOT EXISTS "CollectionItem_bookmarkId_idx" ON "CollectionItem"("bookmarkId");
+
+CREATE TABLE IF NOT EXISTS "CollectionView" (
+  id text PRIMARY KEY,
+  "collectionId" text NOT NULL REFERENCES "Collection"(id) ON DELETE CASCADE,
+  name text NOT NULL,
+  type text NOT NULL DEFAULT 'TABLE' CHECK (type IN ('TABLE','BOARD','CALENDAR','LIST')),
+  position integer NOT NULL DEFAULT 0,
+  filters jsonb NOT NULL DEFAULT '{"operator":"AND","clauses":[]}',
+  sorts jsonb NOT NULL DEFAULT '[]',
+  "groupByPropertyId" text REFERENCES "CollectionProperty"(id) ON DELETE SET NULL,
+  "displaySettings" jsonb NOT NULL DEFAULT '{}',
+  version integer NOT NULL DEFAULT 1,
+  "createdAt" timestamptz NOT NULL DEFAULT now(),
+  "updatedAt" timestamptz NOT NULL DEFAULT now()
+);
+CREATE INDEX IF NOT EXISTS "CollectionView_collectionId_idx" ON "CollectionView"("collectionId");