Initial boilerplate scaffold for continuum-backend

Bun + ElysiaJS control plane: Drizzle/Postgres schema (printers, farms,
print_jobs, pgvector frame_embeddings), R2 presigned URLs, Redis Streams
frame ingestion queue, REST routes, and the /ws/edge/v1 edge-gateway
WebSocket uplink.

src/routes/farms.ts

@@ -0,0 +1,38 @@
+import { Elysia, t } from "elysia";
+import { eq } from "drizzle-orm";
+import { db } from "../db";
+import { farms } from "../db/schema";
+
+export const farmRoutes = new Elysia({ prefix: "/farms" })
+  .get("/", async () => db.select().from(farms))
+  .get("/:id", async ({ params, set }) => {
+    const farm = await db.query.farms.findFirst({ where: eq(farms.id, params.id) });
+    if (!farm) {
+      set.status = 404;
+      return { error: { code: "NOT_FOUND", message: `Farm ${params.id} not found` } };
+    }
+    return farm;
+  })
+  .post(
+    "/",
+    async ({ body, set }) => {
+      const [farm] = await db
+        .insert(farms)
+        .values({
+          name: body.name,
+          ownerId: body.ownerId,
+          edgeProxyToken: crypto.randomUUID(),
+          location: body.location,
+        })
+        .returning();
+      set.status = 201;
+      return farm;
+    },
+    {
+      body: t.Object({
+        name: t.String({ minLength: 1 }),
+        ownerId: t.String({ format: "uuid" }),
+        location: t.Optional(t.String()),
+      }),
+    },
+  );