Fix users service startup panic — route syntax and admin login

- All /:param routes converted to /{param} (Axum v0.8 breaking change)
- admin.rs, kb.rs, reviews.rs, support.rs, pricing.rs, coupons.rs fixed
- employees app routes fixed (departments, designations, employees handlers)
- kb.rs multiline route definitions also fixed
- Users service now boots successfully

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/employees/src/handlers/departments.rs

@@ -14,7 +14,7 @@ use db::models::department::{DepartmentRepository, CreateDepartmentPayload};
 pub fn router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_departments).post(create_department))
-        .route("/:id", patch(update_department).delete(delete_department))
+        .route("/{id}", patch(update_department).delete(delete_department))
 }
 
 async fn list_departments(

apps/employees/src/handlers/designations.rs

@@ -14,8 +14,8 @@ use db::models::designation::{DesignationRepository, CreateDesignationPayload};
 pub fn router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_all_designations).post(create_designation))
-        .route("/department/:dept_id", get(list_by_department))
-        .route("/:id", patch(update_designation).delete(delete_designation))
+        .route("/department/{dept_id}", get(list_by_department))
+        .route("/{id}", patch(update_designation).delete(delete_designation))
 }
 
 async fn list_all_designations(

apps/employees/src/handlers/employees.rs

@@ -14,7 +14,7 @@ use db::models::employee::{Employee, EmployeeRepository, CreateEmployeePayload};
 pub fn router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_employees).post(create_employee))
-        .route("/:id", get(get_employee).patch(update_employee).delete(delete_employee))
+        .route("/{id}", get(get_employee).patch(update_employee).delete(delete_employee))
 }
 
 #[derive(Deserialize)]

apps/users/src/handlers/admin.rs

@@ -16,7 +16,7 @@ pub fn router() -> Router<AppState> {
         .route("/users", get(list_users))
         .route("/customers", get(list_customers))
         .route("/candidates", get(list_candidates))
-        .route("/users/:id/status", axum::routing::patch(update_user_status))
+        .route("/users/{id}/status", axum::routing::patch(update_user_status))
 }
 
 #[derive(Deserialize)]

apps/users/src/handlers/coupons.rs

@@ -15,13 +15,13 @@ use uuid::Uuid;
 pub fn coupons_router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_coupons).post(create_coupon))
-        .route("/:id", patch(update_coupon).delete(delete_coupon))
+        .route("/{id}", patch(update_coupon).delete(delete_coupon))
 }
 
 pub fn discounts_router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_discounts).post(create_discount))
-        .route("/:id", patch(update_discount))
+        .route("/{id}", patch(update_discount))
 }
 
 // ── Coupon DTOs ───────────────────────────────────────────────────────────────

apps/users/src/handlers/kb.rs

@@ -17,7 +17,7 @@ pub fn public_router() -> Router<AppState> {
     Router::new()
         .route("/categories", get(public_list_categories))
         .route("/articles", get(public_list_articles))
-        .route("/articles/:slug", get(public_get_article))
+        .route("/articles/{slug}", get(public_get_article))
 }
 
 /// Admin CRUD routes
@@ -26,13 +26,13 @@ pub fn admin_router() -> Router<AppState> {
         // Categories
         .route("/categories", get(admin_list_categories).post(admin_create_category))
         .route(
-            "/categories/:id",
+            "/categories/{id}",
             patch(admin_update_category).delete(admin_delete_category),
         )
         // Articles
         .route("/articles", get(admin_list_articles).post(admin_create_article))
         .route(
-            "/articles/:id",
+            "/articles/{id}",
             get(admin_get_article)
                 .patch(admin_update_article)
                 .delete(admin_delete_article),

apps/users/src/handlers/pricing.rs

@@ -21,7 +21,7 @@ pub fn public_packages_router() -> Router<AppState> {
 pub fn packages_router() -> Router<AppState> {
     Router::new()
         .route("/", get(list_packages).post(create_package))
-        .route("/:id", patch(update_package).delete(delete_package))
+        .route("/{id}", patch(update_package).delete(delete_package))
 }
 
 pub fn reports_router() -> Router<AppState> {

apps/users/src/handlers/reviews.rs

@@ -15,7 +15,7 @@ use uuid::Uuid;
 pub fn admin_router() -> Router<AppState> {
     Router::new()
         .route("/", get(admin_list_reviews).post(admin_create_review))
-        .route("/:id", axum::routing::patch(admin_update_review).delete(admin_delete_review))
+        .route("/{id}", axum::routing::patch(admin_update_review).delete(admin_delete_review))
 }
 
 // ── DTOs ──────────────────────────────────────────────────────────────────────

apps/users/src/handlers/support.rs

@@ -16,16 +16,16 @@ use uuid::Uuid;
 pub fn user_router() -> Router<AppState> {
     Router::new()
         .route("/", post(user_create_ticket).get(user_list_tickets))
-        .route("/:id", get(user_get_ticket))
-        .route("/:id/messages", post(user_add_message))
+        .route("/{id}", get(user_get_ticket))
+        .route("/{id}/messages", post(user_add_message))
 }
 
 /// Admin support routes
 pub fn admin_router() -> Router<AppState> {
     Router::new()
         .route("/", get(admin_list_cases).post(admin_create_case))
-        .route("/:id", get(admin_get_case).patch(admin_update_case))
-        .route("/:id/messages", post(admin_add_message))
+        .route("/{id}", get(admin_get_case).patch(admin_update_case))
+        .route("/{id}/messages", post(admin_add_message))
 }
 
 // ── DTOs ──────────────────────────────────────────────────────────────────────