Rename project from Re:Link to Startover

Rebrand repository from "Re:Link" to "Startover" across the codebase. Updates include package names and scopes (@relink/* -> @startover/*), import paths, Next.js transpile settings, vitest name, UI text and docs, Dockerfile and CI/workflow names, deploy scripts and repo paths, and example/production env values. Also add auth-related env vars, an apps/web .env symlink, and small formatting/typing cleanups in several TSX/TS files and tests to accommodate the rename.

packages/shared/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@relink/shared",
+  "name": "@startover/shared",
   "version": "0.0.1",
   "private": false,
   "type": "module",

packages/shared/src/constants.ts

@@ -1,4 +1,4 @@
-export const APP_NAME = 'Re:Link' as const;
+export const APP_NAME = 'Startover' as const;
 
 export const PAGINATION = {
   DEFAULT_PAGE: 1,

packages/shared/src/test-utils/index.ts

@@ -25,7 +25,7 @@ export function expectFailure<T, E = AppError>(result: Result<T, E>): E {
  * Create a test database URL with a unique database name for isolation.
  */
 export function createTestDatabaseUrl(baseUrl?: string): string {
-  const base = baseUrl ?? 'postgresql://relink:relink_test@localhost:5433/relink_test';
+  const base = baseUrl ?? 'postgresql://startover:startover_test@localhost:5433/startover_test';
   return base;
 }