Implement comprehensive frontend integration testing with Playwright

- Add Playwright E2E testing framework with cross-browser support (Chrome, Firefox)
- Create authentication helpers for CalDAV server integration
- Implement calendar interaction helpers with event creation, drag-and-drop, and view switching
- Add comprehensive drag-and-drop test suite with event cleanup
- Configure CI/CD integration with Gitea Actions for headless testing
- Support both local development and CI environments with proper dependency management
- Include video recording, screenshots, and HTML reporting for test debugging
- Handle Firefox-specific timing and interaction challenges with force clicks and timeouts

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/e2e/node_modules/playwright/lib/mcp/server.js

@@ -0,0 +1,118 @@
+"use strict";
+var __create = Object.create;
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __getProtoOf = Object.getPrototypeOf;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
+  // If the importer is in node compatibility mode or this is not an ESM
+  // file that has been converted to a CommonJS file using a Babel-
+  // compatible transform (i.e. "__esModule" has not been set), then set
+  // "default" to the CommonJS "module.exports" for node compatibility.
+  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
+  mod
+));
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var server_exports = {};
+__export(server_exports, {
+  connect: () => connect,
+  createServer: () => createServer
+});
+module.exports = __toCommonJS(server_exports);
+var import_utilsBundle = require("playwright-core/lib/utilsBundle");
+var mcpBundle = __toESM(require("./bundle"));
+const serverDebug = (0, import_utilsBundle.debug)("pw:mcp:server");
+const errorsDebug = (0, import_utilsBundle.debug)("pw:mcp:errors");
+async function connect(serverBackendFactory, transport, runHeartbeat) {
+  const backend = serverBackendFactory();
+  const server = createServer(backend, runHeartbeat);
+  await server.connect(transport);
+}
+function createServer(backend, runHeartbeat) {
+  let initializedCallback = () => {
+  };
+  const initializedPromise = new Promise((resolve) => initializedCallback = resolve);
+  const server = new mcpBundle.Server({ name: backend.name, version: backend.version }, {
+    capabilities: {
+      tools: {}
+    }
+  });
+  server.setRequestHandler(mcpBundle.ListToolsRequestSchema, async () => {
+    serverDebug("listTools");
+    await initializedPromise;
+    const tools = await backend.listTools();
+    return { tools };
+  });
+  let heartbeatRunning = false;
+  server.setRequestHandler(mcpBundle.CallToolRequestSchema, async (request) => {
+    serverDebug("callTool", request);
+    await initializedPromise;
+    if (runHeartbeat && !heartbeatRunning) {
+      heartbeatRunning = true;
+      startHeartbeat(server);
+    }
+    try {
+      return await backend.callTool(request.params.name, request.params.arguments || {});
+    } catch (error) {
+      return {
+        content: [{ type: "text", text: "### Result\n" + String(error) }],
+        isError: true
+      };
+    }
+  });
+  addServerListener(server, "initialized", async () => {
+    try {
+      const capabilities = server.getClientCapabilities();
+      let clientRoots = [];
+      if (capabilities?.roots) {
+        const { roots } = await server.listRoots(void 0, { timeout: 2e3 }).catch(() => ({ roots: [] }));
+        clientRoots = roots;
+      }
+      const clientVersion = server.getClientVersion() ?? { name: "unknown", version: "unknown" };
+      await backend.initialize?.(clientVersion, clientRoots);
+      initializedCallback();
+    } catch (e) {
+      errorsDebug(e);
+    }
+  });
+  addServerListener(server, "close", () => backend.serverClosed?.());
+  return server;
+}
+const startHeartbeat = (server) => {
+  const beat = () => {
+    Promise.race([
+      server.ping(),
+      new Promise((_, reject) => setTimeout(() => reject(new Error("ping timeout")), 5e3))
+    ]).then(() => {
+      setTimeout(beat, 3e3);
+    }).catch(() => {
+      void server.close();
+    });
+  };
+  beat();
+};
+function addServerListener(server, event, listener) {
+  const oldListener = server[`on${event}`];
+  server[`on${event}`] = () => {
+    oldListener?.();
+    listener();
+  };
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  connect,
+  createServer
+});