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/plugins/gitCommitInfoPlugin.js

@@ -0,0 +1,198 @@
+"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 gitCommitInfoPlugin_exports = {};
+__export(gitCommitInfoPlugin_exports, {
+  addGitCommitInfoPlugin: () => addGitCommitInfoPlugin
+});
+module.exports = __toCommonJS(gitCommitInfoPlugin_exports);
+var fs = __toESM(require("fs"));
+var import_utils = require("playwright-core/lib/utils");
+const GIT_OPERATIONS_TIMEOUT_MS = 3e3;
+const addGitCommitInfoPlugin = (fullConfig) => {
+  fullConfig.plugins.push({ factory: gitCommitInfoPlugin.bind(null, fullConfig) });
+};
+function print(s, ...args) {
+  console.log("GitCommitInfo: " + s, ...args);
+}
+function debug(s, ...args) {
+  if (!process.env.DEBUG_GIT_COMMIT_INFO)
+    return;
+  print(s, ...args);
+}
+const gitCommitInfoPlugin = (fullConfig) => {
+  return {
+    name: "playwright:git-commit-info",
+    setup: async (config, configDir) => {
+      const metadata = config.metadata;
+      const ci = await ciInfo();
+      if (!metadata.ci && ci) {
+        debug("ci info", ci);
+        metadata.ci = ci;
+      }
+      if (fullConfig.captureGitInfo?.commit || fullConfig.captureGitInfo?.commit === void 0 && ci) {
+        const git = await gitCommitInfo(configDir).catch((e) => print("failed to get git commit info", e));
+        if (git) {
+          debug("commit info", git);
+          metadata.gitCommit = git;
+        }
+      }
+      if (fullConfig.captureGitInfo?.diff || fullConfig.captureGitInfo?.diff === void 0 && ci) {
+        const diffResult = await gitDiff(configDir, ci).catch((e) => print("failed to get git diff", e));
+        if (diffResult) {
+          debug(`diff length ${diffResult.length}`);
+          metadata.gitDiff = diffResult;
+        }
+      }
+    }
+  };
+};
+async function ciInfo() {
+  if (process.env.GITHUB_ACTIONS) {
+    let pr;
+    try {
+      const json = JSON.parse(await fs.promises.readFile(process.env.GITHUB_EVENT_PATH, "utf8"));
+      pr = { title: json.pull_request.title, number: json.pull_request.number, baseHash: json.pull_request.base.sha };
+    } catch {
+    }
+    return {
+      commitHref: `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/commit/${process.env.GITHUB_SHA}`,
+      commitHash: process.env.GITHUB_SHA,
+      prHref: pr ? `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/pull/${pr.number}` : void 0,
+      prTitle: pr?.title,
+      prBaseHash: pr?.baseHash,
+      buildHref: `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/actions/runs/${process.env.GITHUB_RUN_ID}`
+    };
+  }
+  if (process.env.GITLAB_CI) {
+    return {
+      commitHref: `${process.env.CI_PROJECT_URL}/-/commit/${process.env.CI_COMMIT_SHA}`,
+      commitHash: process.env.CI_COMMIT_SHA,
+      buildHref: process.env.CI_JOB_URL,
+      branch: process.env.CI_COMMIT_REF_NAME
+    };
+  }
+  if (process.env.JENKINS_URL && process.env.BUILD_URL) {
+    return {
+      commitHref: process.env.BUILD_URL,
+      commitHash: process.env.GIT_COMMIT,
+      branch: process.env.GIT_BRANCH
+    };
+  }
+}
+async function gitCommitInfo(gitDir) {
+  const separator = `---786eec917292---`;
+  const tokens = [
+    "%H",
+    // commit hash
+    "%h",
+    // abbreviated commit hash
+    "%s",
+    // subject
+    "%B",
+    // raw body (unwrapped subject and body)
+    "%an",
+    // author name
+    "%ae",
+    // author email
+    "%at",
+    // author date, UNIX timestamp
+    "%cn",
+    // committer name
+    "%ce",
+    // committer email
+    "%ct",
+    // committer date, UNIX timestamp
+    ""
+    // branch
+  ];
+  const output = await runGit(`git log -1 --pretty=format:"${tokens.join(separator)}" && git rev-parse --abbrev-ref HEAD`, gitDir);
+  if (!output)
+    return void 0;
+  const [hash, shortHash, subject, body, authorName, authorEmail, authorTime, committerName, committerEmail, committerTime, branch] = output.split(separator);
+  return {
+    shortHash,
+    hash,
+    subject,
+    body,
+    author: {
+      name: authorName,
+      email: authorEmail,
+      time: +authorTime * 1e3
+    },
+    committer: {
+      name: committerName,
+      email: committerEmail,
+      time: +committerTime * 1e3
+    },
+    branch: branch.trim()
+  };
+}
+async function gitDiff(gitDir, ci) {
+  const diffLimit = 1e5;
+  if (ci?.prBaseHash) {
+    await runGit(`git fetch origin ${ci.prBaseHash} --depth=1 --no-auto-maintenance --no-auto-gc --no-tags --no-recurse-submodules`, gitDir);
+    const diff2 = await runGit(`git diff ${ci.prBaseHash} HEAD`, gitDir);
+    if (diff2)
+      return diff2.substring(0, diffLimit);
+  }
+  if (ci)
+    return;
+  const uncommitted = await runGit("git diff", gitDir);
+  if (uncommitted === void 0) {
+    return;
+  }
+  if (uncommitted)
+    return uncommitted.substring(0, diffLimit);
+  const diff = await runGit("git diff HEAD~1", gitDir);
+  return diff?.substring(0, diffLimit);
+}
+async function runGit(command, cwd) {
+  debug(`running "${command}"`);
+  const start = (0, import_utils.monotonicTime)();
+  const result = await (0, import_utils.spawnAsync)(
+    command,
+    [],
+    { stdio: "pipe", cwd, timeout: GIT_OPERATIONS_TIMEOUT_MS, shell: true }
+  );
+  if ((0, import_utils.monotonicTime)() - start > GIT_OPERATIONS_TIMEOUT_MS) {
+    print(`timeout of ${GIT_OPERATIONS_TIMEOUT_MS}ms exceeded while running "${command}"`);
+    return;
+  }
+  if (result.code)
+    debug(`failure, code=${result.code}
+
+${result.stderr}`);
+  else
+    debug(`success`);
+  return result.code ? void 0 : result.stdout.trim();
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  addGitCommitInfoPlugin
+});