feat: migrate app to local Fastify and Postgres stack

Replace Supabase auth and search runtime with a local Fastify API, PostgreSQL/PostGIS schema, and local session handling. Scaffold the worker and deep-research foundations while keeping the existing research, dashboard, and map flows running on the new backend.

server/src/jobs/names.ts

@@ -0,0 +1,2 @@
+export const RUN_SEARCH_JOB = 'search.run';
+export const RUN_DEEP_RESEARCH_BATCH_JOB = 'deep-research.run';

server/src/jobs/register-jobs.ts

@@ -0,0 +1,12 @@
+import type { PgBoss } from 'pg-boss';
+import { RUN_DEEP_RESEARCH_BATCH_JOB, RUN_SEARCH_JOB } from './names.js';
+
+export async function registerJobs(boss: PgBoss) {
+  await boss.work(RUN_SEARCH_JOB, async ([job]) => {
+    console.warn(`Job ${RUN_SEARCH_JOB} is queued but not implemented yet`, job?.id);
+  });
+
+  await boss.work(RUN_DEEP_RESEARCH_BATCH_JOB, async ([job]) => {
+    console.warn(`Job ${RUN_DEEP_RESEARCH_BATCH_JOB} is queued but not implemented yet`, job?.id);
+  });
+}