docs: remove snapshot test commands from development guide

Author: limulus

CLAUDE.md

@@ -9,9 +9,7 @@
 
 - Run unit tests: `npm run test`
 - Run AWS integration tests (runs code in AWS): `npm run test:integration`
-- Run snapshot tests: `npm run test:snapshots`
 - Run all tests: `npm run test:all`
-- Update snapshots: `npm run test:snapshots -- -u`
 
 ## Infrastructure Commands
 
@@ -42,5 +40,4 @@
 - `/infra/lib`: CDK stack definitions
 - `/infra/functions`: CloudFront Functions (JS)
 - `/infra/test`: Infrastructure tests
-- `/snapshots`: HTML snapshot tests for representative pages
 - `/types`: TypeScript type definitions