feat: Update images with Unsplash (hero + illustrations), fix UX/UI, add animations

- Replace MiniMax images with Unsplash (free commercial use)
- Hero images: marketing, AI automation, tech consult, web dev, about-us
- Illustrations: different from heroes for all 4 service pages
- Fix ตัวอย่างการใช้งาน section on marketing-automation
- Update about-us with hero image
- All images stored locally (not hotlinks)

db/schema.ts

@@ -1,7 +1,6 @@
 import { defineDb, defineTable, column } from 'astro:db';
 
-// ConsentLog table for PDPA compliance
-const ConsentLog = defineTable({
+export const ConsentLog = defineTable({
   columns: {
     id: column.number({ primaryKey: true }),
     sessionId: column.text({ unique: true }),