db: add incoming_leg_transport_mode to day_assignments

server/src/db/migrations.ts

@@ -3772,6 +3772,17 @@ function runMigrations(db: Database.Database): void {
         if (!err.message?.includes('duplicate column name')) throw err;
       }
     },
+    // Per-segment travel mode for boundary legs: a leg whose ORIGIN is not a place
+    // (booking arrival, morning hotel) stores its mode on the DESTINATION stop.
+    // NULL = inherit the day default. INERT whenever the previous timeline element
+    // is itself a place (that place's outgoing leg_transport_mode wins).
+    () => {
+      try {
+        db.exec('ALTER TABLE day_assignments ADD COLUMN incoming_leg_transport_mode TEXT');
+      } catch (err: any) {
+        if (!err.message?.includes('duplicate column name')) throw err;
+      }
+    },
     // School holidays are a visual Vacay calendar layer. Keep them separate from
     // public holidays so applyHolidayCalendars never removes vacation entries for
     // school-break dates. Appended LAST: this branch was cut before #1435/#1281

server/tests/integration/leg-mode-incoming.test.ts

@@ -0,0 +1,30 @@
+/**
+ * Migration test for incoming_leg_transport_mode on day_assignments.
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+
+const Database = require('better-sqlite3');
+
+import { createTables } from '../../src/db/schema';
+import { runMigrations } from '../../src/db/migrations';
+
+let testDb: any;
+
+beforeAll(() => {
+  testDb = new Database(':memory:');
+  testDb.exec('PRAGMA journal_mode = WAL');
+  testDb.exec('PRAGMA foreign_keys = ON');
+  createTables(testDb);
+  runMigrations(testDb);
+});
+
+afterAll(() => {
+  testDb.close();
+});
+
+describe('incoming_leg_transport_mode migration', () => {
+  it('adds a nullable incoming_leg_transport_mode column to day_assignments', () => {
+    const cols = testDb.prepare(`PRAGMA table_info(day_assignments)`).all() as { name: string }[];
+    expect(cols.map(c => c.name)).toContain('incoming_leg_transport_mode');
+  });
+});