feat: initial scaffold - backend, frontend, Prisma schema, Docker

- Prisma schema: User, Session, RepoConfig, Preview, Job, WebhookToken, NoConfigComment, AdminSettings
- Backend: auth (login/logout/me/first-user setup), webhook handler with HMAC verification, EC2 service, SSH service, deploy pipeline, job queue worker, cron workers
- Frontend: Login with first-user detection, Dashboard, PreviewDetail with live log streaming, Settings, Repos config, Admin panel, SetupWizard, Privacy page
- Docker Compose and Dockerfile for self-hosted deployment
- Uses bcryptjs for Node 24 compatibility

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/dist/lib/errors.js

@@ -0,0 +1,37 @@
+"use strict";
+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+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 __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var errors_exports = {};
+__export(errors_exports, {
+  ERROR_MESSAGES: () => ERROR_MESSAGES
+});
+module.exports = __toCommonJS(errors_exports);
+const ERROR_MESSAGES = {
+  UNAUTHORIZED: { code: 401, message: "You are not authorized to access this resource." },
+  FORBIDDEN: { code: 403, message: "You do not have permission to access this resource." },
+  NOT_FOUND: { code: 404, message: "The requested resource was not found." },
+  INTERNAL_SERVER_ERROR: { code: 500, message: "An unexpected server error has occurred." },
+  BAD_REQUEST: { code: 400, message: "The request was invalid or malformed." },
+  CONFLICT: { code: 409, message: "The request conflicts with the current state of the resource." },
+  TOO_MANY_REQUESTS: { code: 429, message: "Too many requests. Please try again later." }
+};
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  ERROR_MESSAGES
+});
+//# sourceMappingURL=errors.js.map