feat: complete Phase 1 infrastructure

- erp-core: error types, shared types, event bus, ErpModule trait
- erp-server: config loading, database/Redis connections, migrations
- erp-server/migration: tenants table with SeaORM
- apps/web: Vite + React 18 + TypeScript + Ant Design 5 + TailwindCSS
- Web frontend: main layout with sidebar, header, routing
- Docker: PostgreSQL 16 + Redis 7 development environment
- All workspace crates compile successfully (cargo check passes)

crates/erp-server/Cargo.toml

@@ -20,6 +20,7 @@ config.workspace = true
 sea-orm.workspace = true
 redis.workspace = true
 utoipa.workspace = true
-utoipa-swagger-ui.workspace = true
 serde_json.workspace = true
 serde.workspace = true
+erp-server-migration = { path = "migration" }
+anyhow.workspace = true

crates/erp-server/migration/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "erp-server-migration"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+sea-orm-migration.workspace = true
+tokio.workspace = true

crates/erp-server/migration/src/lib.rs

@@ -0,0 +1,12 @@
+pub use sea_orm_migration::prelude::*;
+
+mod m20260410_000001_create_tenant;
+
+pub struct Migrator;
+
+#[async_trait::async_trait]
+impl MigratorTrait for Migrator {
+    fn migrations() -> Vec<Box<dyn MigrationTrait>> {
+        vec![Box::new(m20260410_000001_create_tenant::Migration)]
+    }
+}

crates/erp-server/migration/src/m20260410_000001_create_tenant.rs

@@ -0,0 +1,74 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        manager
+            .create_table(
+                Table::create()
+                    .table(Tenant::Table)
+                    .if_not_exists()
+                    .col(
+                        ColumnDef::new(Tenant::Id)
+                            .uuid()
+                            .not_null()
+                            .primary_key(),
+                    )
+                    .col(ColumnDef::new(Tenant::Name).string().not_null())
+                    .col(
+                        ColumnDef::new(Tenant::Code)
+                            .string()
+                            .not_null()
+                            .unique_key(),
+                    )
+                    .col(
+                        ColumnDef::new(Tenant::Status)
+                            .string()
+                            .not_null()
+                            .default("active"),
+                    )
+                    .col(ColumnDef::new(Tenant::Settings).json().null())
+                    .col(
+                        ColumnDef::new(Tenant::CreatedAt)
+                            .timestamp_with_time_zone()
+                            .not_null()
+                            .default(Expr::current_timestamp()),
+                    )
+                    .col(
+                        ColumnDef::new(Tenant::UpdatedAt)
+                            .timestamp_with_time_zone()
+                            .not_null()
+                            .default(Expr::current_timestamp()),
+                    )
+                    .col(
+                        ColumnDef::new(Tenant::DeletedAt)
+                            .timestamp_with_time_zone()
+                            .null(),
+                    )
+                    .to_owned(),
+            )
+            .await
+    }
+
+    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {
+        manager
+            .drop_table(Table::drop().table(Tenant::Table).to_owned())
+            .await
+    }
+}
+
+#[derive(DeriveIden)]
+enum Tenant {
+    Table,
+    Id,
+    Name,
+    Code,
+    Status,
+    Settings,
+    CreatedAt,
+    UpdatedAt,
+    DeletedAt,
+}

crates/erp-server/src/main.rs

@@ -3,6 +3,8 @@ mod db;
 
 use axum::Router;
 use config::AppConfig;
+use erp_server_migration::Migrator;
+use erp_server_migration::MigratorTrait;
 use tracing_subscriber::EnvFilter;
 
 #[tokio::main]
@@ -24,6 +26,10 @@ async fn main() -> anyhow::Result<()> {
     // Connect to database
     let db = db::connect(&config.database).await?;
 
+    // Run migrations
+    Migrator::up(&db, None).await?;
+    tracing::info!("Database migrations applied");
+
     // Connect to Redis
     let _redis_client = redis::Client::open(&config.redis.url[..])?;
     tracing::info!("Redis client created");