Add browser SSH and project port proxy flows

[skulidropek]

Summary

• Add project port-forward API and reverse proxy support with short /p/<projectKey>/<port>/ URLs.
• Add browser Ports panel plus one-page adaptive menu/screen layout for project flows.
• Add SSH deep links via /ssh/<projectKey> and keep embedded terminal/auth terminal logs visible.
• Keep GitHub auth gating and post-OAuth project refresh wired into the browser UX.

Verification

• bun run --cwd packages/api typecheck
• bun run --cwd packages/app typecheck
• bun run --cwd packages/api lint && bun run --cwd packages/api test && bun run --cwd packages/api build
• bun run --cwd packages/app lint && bun run --cwd packages/app test && bun run --cwd packages/app build:web
• git diff --check
• Runtime smoke: Cloudflare /p/e404c501c982/3000/ opened the container demo site.
• Runtime smoke: Cloudflare terminal websocket returned ready for project SSH session.