Fix dev migration prompt and embedded db:migrate

packages/db/src/migration-status.ts

@@ -0,0 +1,45 @@
+import { inspectMigrations } from "./client.js";
+import { resolveMigrationConnection } from "./migration-runtime.js";
+
+const jsonMode = process.argv.includes("--json");
+
+async function main(): Promise<void> {
+  const connection = await resolveMigrationConnection();
+
+  try {
+    const state = await inspectMigrations(connection.connectionString);
+    const payload =
+      state.status === "upToDate"
+        ? {
+            source: connection.source,
+            status: "upToDate" as const,
+            tableCount: state.tableCount,
+            pendingMigrations: [] as string[],
+          }
+        : {
+            source: connection.source,
+            status: "needsMigrations" as const,
+            tableCount: state.tableCount,
+            pendingMigrations: state.pendingMigrations,
+            reason: state.reason,
+          };
+
+    if (jsonMode) {
+      console.log(JSON.stringify(payload));
+      return;
+    }
+
+    if (payload.status === "upToDate") {
+      console.log(`Database is up to date via ${payload.source}`);
+      return;
+    }
+
+    console.log(
+      `Pending migrations via ${payload.source}: ${payload.pendingMigrations.join(", ")}`,
+    );
+  } finally {
+    await connection.stop();
+  }
+}
+
+await main();