feat: Implement health checks, rate limiting, and security headers for services, update Node.js versions, and add Prettier configuration for frontend.

shared/common/src/health.rs

@@ -0,0 +1,66 @@
+//! Health check endpoints for monitoring and observability
+
+use axum::{Json, Router, routing::get, extract::State};
+use serde_json::json;
+use sqlx::PgPool;
+use std::time::Instant;
+
+/// Health check state shared across requests
+#[derive(Clone)]
+pub struct HealthState {
+    pub start_time: Instant,
+    pub version: String,
+}
+
+impl Default for HealthState {
+    fn default() -> Self {
+        Self {
+            start_time: Instant::now(),
+            version: env!("CARGO_PKG_VERSION").to_string(),
+        }
+    }
+}
+
+/// Basic health check endpoint
+pub async fn health_check() -> Json<serde_json::Value> {
+    Json(json!({
+        "status": "healthy",
+        "timestamp": chrono::Utc::now().to_rfc3339(),
+    }))
+}
+
+/// Detailed readiness check including database connectivity
+pub async fn readiness_check(pool: PgPool) -> Json<serde_json::Value> {
+    let db_status = match pool.acquire().await {
+        Ok(_) => "connected",
+        Err(_) => "disconnected",
+    };
+
+    let status = if db_status == "connected" { "ready" } else { "not_ready" };
+
+    Json(json!({
+        "status": status,
+        "database": db_status,
+        "timestamp": chrono::Utc::now().to_rfc3339(),
+    }))
+}
+
+/// Liveness check with uptime information
+pub async fn liveness_check(state: State<HealthState>) -> Json<serde_json::Value> {
+    let uptime = state.start_time.elapsed();
+
+    Json(json!({
+        "status": "alive",
+        "version": state.version,
+        "uptime_seconds": uptime.as_secs(),
+        "timestamp": chrono::Utc::now().to_rfc3339(),
+    }))
+}
+
+/// Create health routes
+pub fn health_routes(pool: PgPool) -> Router<HealthState> {
+    Router::new()
+        .route("/health", get(health_check))
+        .route("/health/live", get(liveness_check))
+        .route("/health/ready", get(move || readiness_check(pool.clone())))
+}

shared/common/src/lib.rs

@@ -3,3 +3,4 @@ pub mod middleware;
 pub mod models;
 pub mod utils;
 pub mod webhooks;
+pub mod health;