✨ feat: enhance admin API helpers with CRUD operations for collections and seed data management

- Added functions for creating, updating, deleting, and listing collection entries in admin API.
- Introduced seed data management for consistent test content across tests.
- Updated global setup and teardown processes to ensure seeded content is created and cleaned up.
- Refactored existing tests to utilize seeded content for improved reliability and maintainability.

tests/global-teardown.ts

@@ -1,36 +1,43 @@
-/**
- * Playwright Global Teardown
- *
- * Runs once after all tests. Use this to:
- * - Clean up test data
- * - Dispose singleton API contexts
- *
- * Customize for your project's cleanup needs.
- */
 import { cleanupAllTestData, disposeAdminApi } from "./api/helpers/admin-api"
 import { deleteAllEmails, disposeMailDev } from "./api/helpers/maildev"
+import { cleanupSeededTestContent } from "./api/helpers/seed-data"
+import { TEST_BASE_URL } from "./fixtures/test-constants"
 
 async function globalTeardown() {
-    const baseURL = process.env.CODING_URL || "https://localhost:3000"
+    const baseURL = TEST_BASE_URL
 
-    // Clean up test users
     try {
+        const probeContext = await import("@playwright/test").then(({ request }) =>
+            request.newContext({ baseURL, ignoreHTTPSErrors: true })
+        )
+        const apiProbe = await probeContext.get("/api/content?limit=1")
+        const contentType = apiProbe.headers()["content-type"] || ""
+        await probeContext.dispose()
+
+        if (!apiProbe.ok() || contentType.includes("text/html")) {
+            console.warn(
+                `Playwright teardown: skipped seeded cleanup because ${baseURL} has no usable /api endpoint (${apiProbe.status()} ${contentType || "without content-type"})`
+            )
+            return
+        }
+
+        const deletedSeedEntries = await cleanupSeededTestContent(baseURL)
         const result = await cleanupAllTestData(baseURL)
-        if (result.users > 0) {
-            console.log(`🧹 Cleanup: ${result.users} test users deleted`)
+        if (deletedSeedEntries > 0 || result.users > 0) {
+            console.log(
+                `Playwright teardown: deleted ${deletedSeedEntries} seeded content entries and ${result.users} test users`
+            )
         }
     } catch (err) {
-        console.warn("⚠️ Test data cleanup failed:", err)
+        console.warn("Playwright teardown: test data cleanup failed:", err)
     }
 
-    // Clean up MailDev emails (optional)
     try {
         await deleteAllEmails()
     } catch {
-        // MailDev cleanup is optional
+        // MailDev cleanup is optional.
     }
 
-    // Dispose singleton API contexts
     await Promise.all([disposeAdminApi(), disposeMailDev()])
 }