Goal

Move the active slate-v2 local site/test defaults from 3000 to 3100.

Scope

• root serve / open scripts
• Playwright base URL and hardcoded example test URLs
• Docker Playwright helpers
• examples readme

Findings

• active runtime/test owners still pointed at 3000
• the draft lane mixes 3100 for local proof scripts and 3000 in some older defaults, so this pass used the user instruction as the tie-breaker

Progress

• switched pnpm serve to next dev -p 3100
• switched pnpm open to http://localhost:3100
• updated Playwright defaults and hardcoded example routes to 3100
• updated Docker Playwright forwarding/base URL to 3100
• updated example docs to 3100

Verification

• rg -n "3000|localhost:3000|127.0.0.1:3000|host.docker.internal:3000|PORT=3000" /Users/zbeyens/git/slate-v2 --glob '!pnpm-lock.yaml' returned no active runtime/test/doc matches
• pnpm build:next
• pnpm lint
• pnpm serve booted cleanly on http://localhost:3100
• pnpm exec playwright test playwright/integration/examples/plaintext.test.ts --project=chromium --workers=1