From cad61fadfc865be9e543df618d430aae6dfc95a7 Mon Sep 17 00:00:00 2001
From: oabrivard <olivier@abrivard.fr>
Date: Thu, 26 Mar 2026 22:58:49 +0100
Subject: [PATCH] feat: create themes table and migrate content settings from
 settings

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 CLAUDE.md                                     |  2 +-
 ...260326000028_create_themes_and_migrate.sql | 44 +++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 backend/migrations/20260326000028_create_themes_and_migrate.sql

diff --git a/CLAUDE.md b/CLAUDE.md
index 2ec4680..f5016c2 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -117,7 +117,7 @@ cd frontend && npx tsc --noEmit
 - `GET /api/v1/admin/users` — user list
 - `PUT /api/v1/admin/users/:id/role` — role management
 
-## Database (27 migrations)
+## Database (28 migrations)
 Tables: `users`, `sessions`, `magic_link_tokens`, `user_settings`, `sources`, `syntheses`, `admin_providers`, `admin_rate_limits`, `user_api_keys`, `audit_log`
 
 ## Environment Variables
diff --git a/backend/migrations/20260326000028_create_themes_and_migrate.sql b/backend/migrations/20260326000028_create_themes_and_migrate.sql
new file mode 100644
index 0000000..cf6c573
--- /dev/null
+++ b/backend/migrations/20260326000028_create_themes_and_migrate.sql
@@ -0,0 +1,44 @@
+-- 1. Create themes table
+CREATE TABLE themes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    theme TEXT NOT NULL,
+    categories JSONB NOT NULL DEFAULT '[]',
+    max_items_per_category INTEGER NOT NULL DEFAULT 4,
+    max_age_days INTEGER NOT NULL DEFAULT 7,
+    summary_length INTEGER NOT NULL DEFAULT 3,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+CREATE INDEX idx_themes_user_id ON themes(user_id);
+
+-- 2. Migrate existing settings to default themes
+INSERT INTO themes (user_id, name, theme, categories, max_items_per_category, max_age_days, summary_length)
+SELECT user_id, theme, theme, categories, max_items_per_category, max_age_days, summary_length
+FROM settings;
+
+-- 3. Add theme_id to sources (nullable)
+ALTER TABLE sources ADD COLUMN theme_id UUID REFERENCES themes(id) ON DELETE CASCADE;
+
+-- 4. Backfill sources with the user's default theme
+UPDATE sources s
+SET theme_id = t.id
+FROM themes t
+WHERE s.user_id = t.user_id;
+
+-- 5. Add theme_id to syntheses (nullable, SET NULL on theme deletion)
+ALTER TABLE syntheses ADD COLUMN theme_id UUID REFERENCES themes(id) ON DELETE SET NULL;
+
+-- 6. Backfill syntheses with the user's default theme
+UPDATE syntheses sy
+SET theme_id = t.id
+FROM themes t
+WHERE sy.user_id = t.user_id;
+
+-- 7. Drop moved columns from settings
+ALTER TABLE settings DROP COLUMN theme;
+ALTER TABLE settings DROP COLUMN categories;
+ALTER TABLE settings DROP COLUMN max_items_per_category;
+ALTER TABLE settings DROP COLUMN max_age_days;
+ALTER TABLE settings DROP COLUMN summary_length;