feat: add postgres migrations and repository adapters for vertical slice

crates/adapters/postgres/migrations/005_organization.sql

@@ -0,0 +1,33 @@
+CREATE TABLE albums (
+    album_id         UUID PRIMARY KEY,
+    title            TEXT NOT NULL,
+    description      TEXT NOT NULL DEFAULT '',
+    creator_user_id  UUID NOT NULL REFERENCES users(id),
+    cover_asset_id   UUID,
+    start_date       TIMESTAMPTZ,
+    end_date         TIMESTAMPTZ,
+    created_at       TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE album_entries (
+    album_id         UUID NOT NULL REFERENCES albums(album_id) ON DELETE CASCADE,
+    asset_id         UUID NOT NULL REFERENCES assets(asset_id) ON DELETE CASCADE,
+    sort_order       INTEGER NOT NULL DEFAULT 0,
+    added_at         TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    added_by_user_id UUID NOT NULL REFERENCES users(id),
+    PRIMARY KEY (album_id, asset_id)
+);
+
+CREATE TABLE tags (
+    tag_id     UUID PRIMARY KEY,
+    name       TEXT NOT NULL,
+    tag_source TEXT NOT NULL DEFAULT 'user_manual'
+);
+
+CREATE TABLE asset_tags (
+    asset_id           UUID NOT NULL REFERENCES assets(asset_id) ON DELETE CASCADE,
+    tag_id             UUID NOT NULL REFERENCES tags(tag_id) ON DELETE CASCADE,
+    tagged_by_user_id  UUID,
+    confidence         DOUBLE PRECISION NOT NULL DEFAULT 1.0,
+    PRIMARY KEY (asset_id, tag_id)
+);