feat(semaphore): trigger Ansible tasks at booking start/end via Semaphore

- Background scheduler checks every 30s for bookings that need setup or teardown
- Per-lab Semaphore template IDs stored on the labs table
- Booking flags track which jobs have been triggered and their Semaphore job IDs
- Immediate teardown triggered when an active booking is cancelled
- Settings UI section for Semaphore API URL, token, and project ID
- Lab template form fields for setup/teardown template IDs
- BookingDetailsModal shows live Ansible job status with manual trigger buttons

src/types.ts

@@ -34,6 +34,8 @@ export interface LabTemplate {
   location: string;
   deviceIds: string[];
   topology: TopologyLink[];
+  semaphoreSetupTemplateId?: string;
+  semaphoreTeardownTemplateId?: string;
 }
 
 export interface Booking {
@@ -46,6 +48,10 @@ export interface Booking {
   status: 'active' | 'upcoming' | 'completed' | 'cancelled';
   notified: boolean;
   emailSent?: boolean;
+  ansibleSetupTriggered?: boolean;
+  ansibleTeardownTriggered?: boolean;
+  ansibleSetupJobId?: string;
+  ansibleTeardownJobId?: string;
 }
 
 export interface LogEntry {