feat(db): migrate to Flyway for schema persistence

'create-drop' borra las tablas en cada shutdown, perdiendo todos
los usuarios (y el cambio de password). Aunque el bind mount
persiste el archivo H2 en /root/docker/manual/lineage2/data/, las
tablas se recreaban vacias en cada restart del container.

Solucion: Flyway para manejar el schema, Hibernate solo valida.

- pom.xml: + quarkus-flyway
- src/main/resources/db/migration/V1__init.sql: schema de users,
  user_state, production_runs + index idx_runs_user_created
- application.properties: database.generation=create-drop -> validate
  + quarkus.flyway.migrate-at-start=true + baseline-on-migrate=true

BootstrapAdmin queda igual: chequea User.count() y crea admin si 0.
Flyway corre antes de Hibernate, asi que las tablas existen cuando
StartupEvent dispara.

pom.xml

@@ -60,6 +60,10 @@
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-jdbc-h2</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-flyway</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-smallrye-jwt</artifactId>

src/main/resources/application.properties

@@ -8,8 +8,12 @@ quarkus.datasource.db-kind=h2
 quarkus.datasource.jdbc.url=jdbc:h2:file:./data/shots;DB_CLOSE_DELAY=-1
 quarkus.datasource.username=sa
 quarkus.datasource.password=
-quarkus.hibernate-orm.database.generation=create-drop
+quarkus.hibernate-orm.database.generation=validate
 quarkus.hibernate-orm.log.sql=false
+# Flyway maneja el schema. validate hace que Hibernate solo valide
+# que el schema en DB coincide con las entities, sin tocarlo.
+quarkus.flyway.migrate-at-start=true
+quarkus.flyway.baseline-on-migrate=true
 
 # JWT
 mp.jwt.verify.issuer=shot-crafter-calculator

src/main/resources/db/migration/V1__init.sql

@@ -0,0 +1,32 @@
+CREATE TABLE users (
+    id UUID PRIMARY KEY,
+    username VARCHAR(30) NOT NULL UNIQUE,
+    password_hash VARCHAR(100) NOT NULL,
+    created_at TIMESTAMP NOT NULL,
+    must_change_password BOOLEAN NOT NULL,
+    is_admin BOOLEAN NOT NULL,
+    last_login_at TIMESTAMP
+);
+
+CREATE TABLE user_state (
+    user_id UUID PRIMARY KEY,
+    state_json TEXT NOT NULL,
+    updated_at TIMESTAMP NOT NULL
+);
+
+CREATE TABLE production_runs (
+    id UUID PRIMARY KEY,
+    user_id UUID NOT NULL,
+    created_at TIMESTAMP NOT NULL,
+    label VARCHAR(100),
+    total_cost BIGINT NOT NULL,
+    total_sale BIGINT NOT NULL,
+    total_profit BIGINT NOT NULL,
+    total_shots BIGINT NOT NULL,
+    total_cristales_used BIGINT NOT NULL,
+    total_ore_used BIGINT NOT NULL,
+    items_json TEXT NOT NULL,
+    snapshot_json TEXT NOT NULL
+);
+
+CREATE INDEX idx_runs_user_created ON production_runs (user_id, created_at);