export flow and fix intercity issue

apps/edr-freight-api/src/migrations/3080000000000-BackfillDireDawaMilestone.ts

@@ -0,0 +1,57 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+/**
+ * Several DCT (DORALEH) → GMP (KALITY) routes are missing the Dire Dawa stop
+ * in their milestone list. The corridor budget builds its per-leg edges from
+ * route_milestones, so on those routes a DCT→Dire Dawa or Dire Dawa→GMP
+ * booking cannot resolve its own leg and conservatively occupies the WHOLE
+ * route — per-leg wagon reuse (a wagon freed at Dire Dawa reloading for GMP)
+ * silently degrades to train-wide accounting.
+ *
+ * Insert the Dire Dawa milestone at sequence 2 on every active DORALEH→KALITY
+ * route with a stop list that lacks it, shifting later stops down. Matched by
+ * yard CODE so the repair is portable across environments. Idempotent: routes
+ * already carrying Dire Dawa are untouched.
+ */
+export class BackfillDireDawaMilestone3080000000000 implements MigrationInterface {
+  name = "BackfillDireDawaMilestone3080000000000";
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`
+      DO $$
+      DECLARE
+        dire uuid;
+        r record;
+      BEGIN
+        SELECT id INTO dire FROM freight.yards
+          WHERE code = 'DIRE_DAWA' AND deleted_at IS NULL;
+        IF dire IS NULL THEN
+          RETURN;
+        END IF;
+
+        FOR r IN
+          SELECT rt.id
+            FROM freight.routes rt
+            JOIN freight.yards o ON o.id = rt.origin_yard_id AND o.code = 'DORALEH'
+            JOIN freight.yards d ON d.id = rt.destination_yard_id AND d.code = 'KALITY'
+           WHERE rt.deleted_at IS NULL
+             AND EXISTS (SELECT 1 FROM freight.route_milestones m
+                          WHERE m.route_id = rt.id AND m.deleted_at IS NULL)
+             AND NOT EXISTS (SELECT 1 FROM freight.route_milestones m
+                              WHERE m.route_id = rt.id AND m.yard_id = dire
+                                AND m.deleted_at IS NULL)
+        LOOP
+          UPDATE freight.route_milestones
+             SET sequence_no = sequence_no + 1
+           WHERE route_id = r.id AND deleted_at IS NULL AND sequence_no >= 2;
+          INSERT INTO freight.route_milestones (route_id, yard_id, sequence_no)
+          VALUES (r.id, dire, 2);
+        END LOOP;
+      END $$;
+    `);
+  }
+
+  public async down(): Promise<void> {
+    // Data repair — not reversible.
+  }
+}