Add Insomnia export and dynamic hostname for API doc

Insomnia export (/api/doc/insomnia.json):
- Generates Insomnia v4 export format with all API routes
- Workspace with environment variables (base_url, env, email, password, jwt_token)
- Folders per section (Auth, Events, Categories, Billets, Scanner)
- Each request with correct method, URL with Insomnia template vars, headers, body
- Auth routes use base_url directly, others use base_url/api/{env}/...
- Download button (indigo) next to Spec JSON button

Dynamic hostname:
- Insomnia export uses request.getSchemeAndHttpHost() (not hardcoded)
- Template passes host via data-host attribute
- JS env switcher reads host from data-host or falls back to location.origin
- Base URLs update dynamically when switching sandbox/live

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

assets/modules/api-env-switcher.js

@@ -1,24 +1,26 @@
-const ENVS = {
-    sandbox: {
-        prefix: '/api/sandbox',
-        baseUrl: 'https://ticket.e-cosplay.fr/api/sandbox',
-        color: 'text-orange-400',
-        btnBg: 'bg-orange-500',
-        desc: 'Environnement de test. Les donnees ne sont pas modifiees.',
-    },
-    live: {
-        prefix: '/api/live',
-        baseUrl: 'https://ticket.e-cosplay.fr/api/live',
-        color: 'text-green-400',
-        btnBg: 'bg-green-600',
-        desc: 'Environnement de production. Les donnees sont reelles.',
-    },
-}
-
 const BTN_BASE = 'env-btn px-5 py-2 font-black uppercase text-xs tracking-widest transition-all cursor-pointer '
 
-function switchEnv(env) {
-    const config = ENVS[env]
+function getEnvs(host) {
+    return {
+        sandbox: {
+            prefix: '/api/sandbox',
+            baseUrl: host + '/api/sandbox',
+            color: 'text-orange-400',
+            btnBg: 'bg-orange-500',
+            desc: 'Environnement de test. Les donnees ne sont pas modifiees.',
+        },
+        live: {
+            prefix: '/api/live',
+            baseUrl: host + '/api/live',
+            color: 'text-green-400',
+            btnBg: 'bg-green-600',
+            desc: 'Environnement de production. Les donnees sont reelles.',
+        },
+    }
+}
+
+function switchEnv(env, envs) {
+    const config = envs[env]
     if (!config) return
 
     document.querySelectorAll('.env-btn').forEach(btn => {
@@ -42,7 +44,11 @@ export function initApiEnvSwitcher() {
     const switcher = document.getElementById('env-switcher')
     if (!switcher) return
 
+    const hostEl = document.querySelector('[data-host]')
+    const host = hostEl ? hostEl.dataset.host : globalThis.location.origin
+    const envs = getEnvs(host)
+
     document.querySelectorAll('.env-btn').forEach(btn => {
-        btn.addEventListener('click', () => switchEnv(btn.dataset.env))
+        btn.addEventListener('click', () => switchEnv(btn.dataset.env, envs))
     })
 }