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/runner/projectUtils.js

@@ -0,0 +1,235 @@
+"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 projectUtils_exports = {};
+__export(projectUtils_exports, {
+  buildDependentProjects: () => buildDependentProjects,
+  buildProjectsClosure: () => buildProjectsClosure,
+  buildTeardownToSetupsMap: () => buildTeardownToSetupsMap,
+  collectFilesForProject: () => collectFilesForProject,
+  filterProjects: () => filterProjects
+});
+module.exports = __toCommonJS(projectUtils_exports);
+var import_fs = __toESM(require("fs"));
+var import_path = __toESM(require("path"));
+var import_util = require("util");
+var import_utils = require("playwright-core/lib/utils");
+var import_utilsBundle = require("playwright-core/lib/utilsBundle");
+var import_util2 = require("../util");
+const readFileAsync = (0, import_util.promisify)(import_fs.default.readFile);
+const readDirAsync = (0, import_util.promisify)(import_fs.default.readdir);
+function wildcardPatternToRegExp(pattern) {
+  return new RegExp("^" + pattern.split("*").map(import_utils.escapeRegExp).join(".*") + "$", "ig");
+}
+function filterProjects(projects, projectNames) {
+  if (!projectNames)
+    return [...projects];
+  const projectNamesToFind = /* @__PURE__ */ new Set();
+  const unmatchedProjectNames = /* @__PURE__ */ new Map();
+  const patterns = /* @__PURE__ */ new Set();
+  for (const name of projectNames) {
+    const lowerCaseName = name.toLocaleLowerCase();
+    if (lowerCaseName.includes("*")) {
+      patterns.add(wildcardPatternToRegExp(lowerCaseName));
+    } else {
+      projectNamesToFind.add(lowerCaseName);
+      unmatchedProjectNames.set(lowerCaseName, name);
+    }
+  }
+  const result = projects.filter((project) => {
+    const lowerCaseName = project.project.name.toLocaleLowerCase();
+    if (projectNamesToFind.has(lowerCaseName)) {
+      unmatchedProjectNames.delete(lowerCaseName);
+      return true;
+    }
+    for (const regex of patterns) {
+      regex.lastIndex = 0;
+      if (regex.test(lowerCaseName))
+        return true;
+    }
+    return false;
+  });
+  if (unmatchedProjectNames.size) {
+    const unknownProjectNames = Array.from(unmatchedProjectNames.values()).map((n) => `"${n}"`).join(", ");
+    throw new Error(`Project(s) ${unknownProjectNames} not found. Available projects: ${projects.map((p) => `"${p.project.name}"`).join(", ")}`);
+  }
+  if (!result.length) {
+    const allProjects = projects.map((p) => `"${p.project.name}"`).join(", ");
+    throw new Error(`No projects matched. Available projects: ${allProjects}`);
+  }
+  return result;
+}
+function buildTeardownToSetupsMap(projects) {
+  const result = /* @__PURE__ */ new Map();
+  for (const project of projects) {
+    if (project.teardown) {
+      const setups = result.get(project.teardown) || [];
+      setups.push(project);
+      result.set(project.teardown, setups);
+    }
+  }
+  return result;
+}
+function buildProjectsClosure(projects, hasTests) {
+  const result = /* @__PURE__ */ new Map();
+  const visit = (depth, project) => {
+    if (depth > 100) {
+      const error = new Error("Circular dependency detected between projects.");
+      error.stack = "";
+      throw error;
+    }
+    if (depth === 0 && hasTests && !hasTests(project))
+      return;
+    if (result.get(project) !== "dependency")
+      result.set(project, depth ? "dependency" : "top-level");
+    for (const dep of project.deps)
+      visit(depth + 1, dep);
+    if (project.teardown)
+      visit(depth + 1, project.teardown);
+  };
+  for (const p of projects)
+    visit(0, p);
+  return result;
+}
+function buildDependentProjects(forProjects, projects) {
+  const reverseDeps = new Map(projects.map((p) => [p, []]));
+  for (const project of projects) {
+    for (const dep of project.deps)
+      reverseDeps.get(dep).push(project);
+  }
+  const result = /* @__PURE__ */ new Set();
+  const visit = (depth, project) => {
+    if (depth > 100) {
+      const error = new Error("Circular dependency detected between projects.");
+      error.stack = "";
+      throw error;
+    }
+    result.add(project);
+    for (const reverseDep of reverseDeps.get(project))
+      visit(depth + 1, reverseDep);
+    if (project.teardown)
+      visit(depth + 1, project.teardown);
+  };
+  for (const forProject of forProjects)
+    visit(0, forProject);
+  return result;
+}
+async function collectFilesForProject(project, fsCache = /* @__PURE__ */ new Map()) {
+  const extensions = /* @__PURE__ */ new Set([".js", ".ts", ".mjs", ".mts", ".cjs", ".cts", ".jsx", ".tsx", ".mjsx", ".mtsx", ".cjsx", ".ctsx"]);
+  const testFileExtension = (file) => extensions.has(import_path.default.extname(file));
+  const allFiles = await cachedCollectFiles(project.project.testDir, project.respectGitIgnore, fsCache);
+  const testMatch = (0, import_util2.createFileMatcher)(project.project.testMatch);
+  const testIgnore = (0, import_util2.createFileMatcher)(project.project.testIgnore);
+  const testFiles = allFiles.filter((file) => {
+    if (!testFileExtension(file))
+      return false;
+    const isTest = !testIgnore(file) && testMatch(file);
+    if (!isTest)
+      return false;
+    return true;
+  });
+  return testFiles;
+}
+async function cachedCollectFiles(testDir, respectGitIgnore, fsCache) {
+  const key = testDir + ":" + respectGitIgnore;
+  let result = fsCache.get(key);
+  if (!result) {
+    result = await collectFiles(testDir, respectGitIgnore);
+    fsCache.set(key, result);
+  }
+  return result;
+}
+async function collectFiles(testDir, respectGitIgnore) {
+  if (!import_fs.default.existsSync(testDir))
+    return [];
+  if (!import_fs.default.statSync(testDir).isDirectory())
+    return [];
+  const checkIgnores = (entryPath, rules, isDirectory, parentStatus) => {
+    let status = parentStatus;
+    for (const rule of rules) {
+      const ruleIncludes = rule.negate;
+      if (status === "included" === ruleIncludes)
+        continue;
+      const relative = import_path.default.relative(rule.dir, entryPath);
+      if (rule.match("/" + relative) || rule.match(relative)) {
+        status = ruleIncludes ? "included" : "ignored";
+      } else if (isDirectory && (rule.match("/" + relative + "/") || rule.match(relative + "/"))) {
+        status = ruleIncludes ? "included" : "ignored";
+      } else if (isDirectory && ruleIncludes && (rule.match("/" + relative, true) || rule.match(relative, true))) {
+        status = "ignored-but-recurse";
+      }
+    }
+    return status;
+  };
+  const files = [];
+  const visit = async (dir, rules, status) => {
+    const entries = await readDirAsync(dir, { withFileTypes: true });
+    entries.sort((a, b) => a.name.localeCompare(b.name));
+    if (respectGitIgnore) {
+      const gitignore = entries.find((e) => e.isFile() && e.name === ".gitignore");
+      if (gitignore) {
+        const content = await readFileAsync(import_path.default.join(dir, gitignore.name), "utf8");
+        const newRules = content.split(/\r?\n/).map((s) => {
+          s = s.trim();
+          if (!s)
+            return;
+          const rule = new import_utilsBundle.minimatch.Minimatch(s, { matchBase: true, dot: true, flipNegate: true });
+          if (rule.comment)
+            return;
+          rule.dir = dir;
+          return rule;
+        }).filter((rule) => !!rule);
+        rules = [...rules, ...newRules];
+      }
+    }
+    for (const entry of entries) {
+      if (entry.name === "." || entry.name === "..")
+        continue;
+      if (entry.isFile() && entry.name === ".gitignore")
+        continue;
+      if (entry.isDirectory() && entry.name === "node_modules")
+        continue;
+      const entryPath = import_path.default.join(dir, entry.name);
+      const entryStatus = checkIgnores(entryPath, rules, entry.isDirectory(), status);
+      if (entry.isDirectory() && entryStatus !== "ignored")
+        await visit(entryPath, rules, entryStatus);
+      else if (entry.isFile() && entryStatus === "included")
+        files.push(entryPath);
+    }
+  };
+  await visit(testDir, [], "included");
+  return files;
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  buildDependentProjects,
+  buildProjectsClosure,
+  buildTeardownToSetupsMap,
+  collectFilesForProject,
+  filterProjects
+});