chore: starter template

db/sqlite/0001-init.sql

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+PRAGMA foreign_keys = ON;
+
+-- Better Auth core schema. These four tables (user, session, account,
+-- verification) are owned and written entirely by Better Auth — the app never
+-- inserts into them directly; sign-up / sign-in / sessions all flow through the
+-- generated `/api/auth/**` routes (see src/auth.ts).
+--
+-- The schema is generated by Better Auth's own migration generator
+-- (`getMigrations(...).compileMigrations()`); the columns are spelled in
+-- snake_case to match the rest of the app's DB convention. Better Auth is handed
+-- the app's kysely (with CamelCasePlugin) in src/auth.ts, so its camelCase field
+-- names (emailVerified, userId, createdAt, ...) compile to exactly these
+-- snake_case columns at runtime. To change this schema (add a provider field, a
+-- plugin table, ...), re-run the generator rather than hand-editing.
+--
+-- Email + password is the default sign-in method. The credential hash is stored
+-- by Better Auth in account.password (provider_id = 'credential'), never on the
+-- user row.
+CREATE TABLE IF NOT EXISTS "user" (
+  "id" text not null primary key,
+  "name" text not null,
+  "email" text not null unique,
+  "email_verified" integer not null,
+  "image" text,
+  "created_at" date not null,
+  "updated_at" date not null
+);
+
+CREATE TABLE IF NOT EXISTS "session" (
+  "id" text not null primary key,
+  "expires_at" date not null,
+  "token" text not null unique,
+  "created_at" date not null,
+  "updated_at" date not null,
+  "ip_address" text,
+  "user_agent" text,
+  "user_id" text not null references "user" ("id") on delete cascade
+);
+
+CREATE TABLE IF NOT EXISTS "account" (
+  "id" text not null primary key,
+  "account_id" text not null,
+  "provider_id" text not null,
+  "user_id" text not null references "user" ("id") on delete cascade,
+  "access_token" text,
+  "refresh_token" text,
+  "id_token" text,
+  "access_token_expires_at" date,
+  "refresh_token_expires_at" date,
+  "scope" text,
+  "password" text,
+  "created_at" date not null,
+  "updated_at" date not null
+);
+
+CREATE TABLE IF NOT EXISTS "verification" (
+  "id" text not null primary key,
+  "identifier" text not null,
+  "value" text not null,
+  "expires_at" date not null,
+  "created_at" date not null,
+  "updated_at" date not null
+);
+
+CREATE INDEX IF NOT EXISTS "session_user_id_idx" ON "session" ("user_id");
+CREATE INDEX IF NOT EXISTS "account_user_id_idx" ON "account" ("user_id");
+CREATE INDEX IF NOT EXISTS "verification_identifier_idx" ON "verification" ("identifier");