feat: refine UI, improve UX, optimize the analysis pipeline, and add character standing positions

tests/unit/location-available-slots.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from 'vitest'
+import { formatLocationAvailableSlotsText } from '@/lib/location-available-slots'
+
+describe('location available slots', () => {
+  it('formats english slot headers without leaking chinese labels', () => {
+    const text = formatLocationAvailableSlotsText(
+      ['left side near the wall'],
+      'en',
+    )
+
+    expect(text).toBe('Available character slots:\n- left side near the wall')
+    expect(text).not.toContain('可站位置：')
+  })
+})