feat: initialize thoughts-frontend with Next.js, TypeScript, and ESLint

- Add ESLint configuration for Next.js and TypeScript support.
- Create Next.js configuration file with standalone output option.
- Initialize package.json with scripts for development, build, and linting.
- Set up PostCSS configuration for Tailwind CSS.
- Add SVG assets for UI components.
- Create TypeScript configuration for strict type checking and module resolution.

thoughts-backend/utils/src/db.rs

@@ -0,0 +1,8 @@
+use migration::{sea_orm::DatabaseConnection, DbErr, Migrator, MigratorTrait, SchemaManager};
+
+pub async fn migrate(conn: &DatabaseConnection) -> Result<(), DbErr> {
+    let schema_manager = SchemaManager::new(conn);
+    Migrator::up(conn, None).await?;
+    assert!(schema_manager.has_table("user").await?);
+    Ok(())
+}

thoughts-backend/utils/src/file.rs

@@ -0,0 +1,22 @@
+use std::process::Command;
+
+fn touch(file_name: &str) {
+    if cfg!(target_os = "windows") {
+        Command::new("cmd")
+            .args(["/C", &format!("type nul >> {}", file_name)])
+            .output()
+            .expect("failed to execute touch");
+    } else {
+        Command::new("touch")
+            .arg(file_name)
+            .output()
+            .expect("failed to execute touch");
+    }
+}
+
+pub fn create_dev_db(db_url: &str) {
+    let prefix = "sqlite://";
+    if let Some(file_name) = db_url.strip_prefix(prefix) {
+        touch(file_name);
+    }
+}

thoughts-backend/utils/src/lib.rs

@@ -0,0 +1,6 @@
+mod db;
+mod file;
+pub mod testing;
+
+pub use db::migrate;
+pub use file::create_dev_db;

thoughts-backend/utils/src/testing/api/mod.rs

@@ -0,0 +1,21 @@
+use axum::{body::Body, http::Request, response::Response, Router};
+use tower::ServiceExt;
+
+pub async fn make_get_request(app: Router, url: &str) -> Response {
+    app.oneshot(Request::builder().uri(url).body(Body::empty()).unwrap())
+        .await
+        .unwrap()
+}
+
+pub async fn make_post_request(app: Router, url: &str, body: String) -> Response {
+    app.oneshot(
+        Request::builder()
+            .method("POST")
+            .uri(url)
+            .header("Content-Type", "application/json")
+            .body(Body::from(body))
+            .unwrap(),
+    )
+    .await
+    .unwrap()
+}

thoughts-backend/utils/src/testing/db/mod.rs

@@ -0,0 +1,9 @@
+use sea_orm::{Database, DatabaseConnection, DbErr};
+
+use crate::migrate;
+
+pub async fn setup_test_db(db_url: &str) -> Result<DatabaseConnection, DbErr> {
+    let db = Database::connect(db_url).await?;
+    migrate(&db).await?;
+    Ok(db)
+}

thoughts-backend/utils/src/testing/mod.rs

@@ -0,0 +1,5 @@
+mod api;
+mod db;
+
+pub use api::{make_get_request, make_post_request};
+pub use db::setup_test_db;