feat(scenario): export scenarios as standalone playwright e2e test projects

- Added E2eExportService to package scenarios as plug-and-play zip archives
  containing package.json, playwright.config.ts, test.spec.ts, .env, credentials.json,
  snippets, and referenced scenario files
- Only bundles credentials, snippets, and files actually referenced (directly or
  transitively) by the scenario's steps, reducing archive size
- Exported test runs entirely offline using a context shim that mirrors liqa's API
  (page, getCredential, runSnippet, getScenarioFiles, downloadFile, assert, etc.)
- Added GET /scenarios/:id/export-e2e HTTP endpoint and export_e2e_test MCP tool
- Added getUsedSnippets() endpoint to list snippets referenced by a scenario
- Added "Used Snippets" section on scenario detail page
- Added archiver@^7.0.1 dependency for zip archive creation
- Bumped version to 1.11.0

server/src/mcp/mcp.service.ts

@@ -11,6 +11,7 @@ import { CredentialService } from "../credential/credential.service";
 import { BrowserService } from "../browser/browser.service";
 import { CodeExecutorService } from "../code-executor/code-executor.service";
 import { ScenarioService } from "../scenario/scenario.service";
+import { E2eExportService } from "../scenario/e2e-export.service";
 import { SnippetService } from "../snippet/snippet.service";
 
 import pkg from "../../package.json";
@@ -25,6 +26,7 @@ export class McpService {
     private readonly browserService: BrowserService,
     private readonly codeExecutor: CodeExecutorService,
     private readonly scenarioService: ScenarioService,
+    private readonly e2eExportService: E2eExportService,
     private readonly snippetService: SnippetService,
   ) {}
 
@@ -1062,6 +1064,40 @@ export class McpService {
       },
     );
 
+    server.registerTool(
+      "export_e2e_test",
+      {
+        description:
+          "Export a scenario as a standalone, plug-and-play Playwright e2e test project (package.json, playwright.config.ts, test.spec.ts, .env), zipped and returned as base64",
+        inputSchema: {
+          id: z.uuid().describe("Scenario ID to export"),
+        },
+      },
+      async ({ id }) => {
+        try {
+          const { filename, buffer } =
+            await this.e2eExportService.buildE2eTestPackage(id);
+          return {
+            content: [
+              {
+                type: "text" as const,
+                text: JSON.stringify({
+                  filename,
+                  contentBase64: buffer.toString("base64"),
+                  encoding: "base64",
+                }),
+              },
+            ],
+          };
+        } catch (err) {
+          return {
+            isError: true,
+            content: [{ type: "text" as const, text: (err as Error).message }],
+          };
+        }
+      },
+    );
+
     // ── Scenario Files ────────────────────────────────────────────────────────
 
     server.registerTool(