Renommage : TrajetKmTracker -> SchotzIadKmTracker (backend, specs, frontend)

- Backend : projets, solution, namespaces et références
  TrajetKmTracker.Api/.Tests -> SchotzIadKmTracker.Api/.Tests
  (dossiers, .csproj, .sln, .http, namespaces C#). GUID UserSecretsId préservé.
- Specs : dossier .kiro/specs/trajet-km-tracker -> schotziad-km-tracker
  et mise à jour des références internes (chemins, tags de propriétés).
- Frontend : projet Angular trajet-km-tracker -> schotziad-km-tracker
  (package.json, angular.json, chemin dist, Dockerfile), titre applicatif
  'SchotzIAD KM Tracker'.
- Docker et scripts (backend/Dockerfile, frontend/Dockerfile, run-dev.sh) mis à jour.
- Suppression du fichier résiduel package.json.bak.

Backend (solution) et frontend (build production) compilent sans erreur.

frontend/angular.json

@@ -7,7 +7,7 @@
   },
   "newProjectRoot": "projects",
   "projects": {
-    "trajet-km-tracker": {
+    "schotziad-km-tracker": {
       "projectType": "application",
       "schematics": {
         "@schematics/angular:component": {
@@ -21,7 +21,7 @@
         "build": {
           "builder": "@angular-devkit/build-angular:application",
           "options": {
-            "outputPath": "dist/trajet-km-tracker",
+            "outputPath": "dist/schotziad-km-tracker",
             "index": "src/index.html",
             "browser": "src/main.ts",
             "polyfills": [],
@@ -71,10 +71,10 @@
           "builder": "@angular-devkit/build-angular:dev-server",
           "configurations": {
             "production": {
-              "buildTarget": "trajet-km-tracker:build:production"
+              "buildTarget": "schotziad-km-tracker:build:production"
             },
             "development": {
-              "buildTarget": "trajet-km-tracker:build:development"
+              "buildTarget": "schotziad-km-tracker:build:development"
             }
           },
           "defaultConfiguration": "development"
@@ -82,7 +82,7 @@
         "extract-i18n": {
           "builder": "@angular-devkit/build-angular:extract-i18n",
           "options": {
-            "buildTarget": "trajet-km-tracker:build"
+            "buildTarget": "schotziad-km-tracker:build"
           }
         },
         "test": {