feat(api-detail): isCurrent + setCurrent + màj doc et seeder

- Shared types : ajout isCurrent sur ApiEntry et ApiEntryListItem
- Backend entity : colonne is_current (boolean, default true)
- Backend service : isCurrent calculé à la création, setCurrent()
  marque une version comme courante (siblings → false)
- Backend controller : POST /api/apis/:id/set-current
- Frontend ApiService : méthode setCurrent()
- Browse/upload : affichage badge "Courante" via isCurrent
- Seeder : données de démo mises à jour
- Documentation : api-reference, architecture, local-setup, CLAUDE.md

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

back/src/modules/seeder/seeder.service.ts

@@ -605,10 +605,41 @@ export class SeederService implements OnApplicationBootstrap {
       await this.reset();
     }
     const count = await this.apiRepo.count();
-    if (count > 0) return; /* Idempotent — ne ré-exécute pas si des données existent */
+    if (count > 0) {
+      await this.fixIsCurrentFlags();
+      return;
+    }
     await this.seed();
   }
 
+  /**
+   * Corrige les flags is_current après une migration :
+   * si toutes les versions d'un même groupe (name+convention) sont marquées courantes,
+   * on ne garde que la plus haute version.
+   */
+  private async fixIsCurrentFlags(): Promise<void> {
+    await this.dataSource.query(`
+      UPDATE api_entries SET is_current = false
+      WHERE id IN (
+        SELECT a.id
+        FROM api_entries a
+        WHERE a.is_current = true
+        AND EXISTS (
+          SELECT 1 FROM api_entries b
+          WHERE b.name = a.name AND b.convention = a.convention
+            AND b.is_current = true
+            AND b.id != a.id
+            AND (
+              b.version_major > a.version_major
+              OR (b.version_major = a.version_major AND b.version_minor > a.version_minor)
+              OR (b.version_major = a.version_major AND b.version_minor = a.version_minor
+                  AND b.version_patch > a.version_patch)
+            )
+        )
+      )
+    `);
+  }
+
   private async reset(): Promise<void> {
     /* Supprimer toutes les entrées puis les catégories */
     await this.apiRepo.delete({});
@@ -697,6 +728,7 @@ export class SeederService implements OnApplicationBootstrap {
         versionMajor: 3,
         versionMinor: 0,
         versionPatch: 4,
+        isCurrent: true,
         description:
           'A sample API that uses a petstore as an example to demonstrate features in the OpenAPI specification.',
         type: 'OPENAPI',
@@ -775,6 +807,7 @@ export class SeederService implements OnApplicationBootstrap {
         versionMajor: 3,
         versionMinor: 0,
         versionPatch: 3,
+        isCurrent: false,
         description:
           'A sample API that uses a petstore as an example to demonstrate features in the OpenAPI specification.',
         type: 'OPENAPI',
@@ -795,6 +828,7 @@ export class SeederService implements OnApplicationBootstrap {
         versionMajor: 3,
         versionMinor: 0,
         versionPatch: 2,
+        isCurrent: false,
         description:
           'A sample API that uses a petstore as an example to demonstrate features in the OpenAPI specification.',
         type: 'OPENAPI',