fix: browser improvements, playwright hotfix.

[jdchawla29]

re-introducing a dedicated base image, improving local development workflows, and adding some build scripts.

• Introduced a new browser-base image (hudevals/hud-browser-base:latest), moving all core system/browser dependencies and Playwright installation into environments/browser/browser-base/Dockerfile. The main environment Dockerfile now uses this base image, resulting in a cleaner and faster build process.

Bgu fixes for Browser Environment:

• Improved the Playwright tool to reuse an existing browser page if available (for CDP connections), reducing unnecessary page creation.
• Changed the app launch flow to wait for the browser page to reach a "network idle" state before proceeding, ensuring the page is fully loaded, used to default to None Field which errored out on playwright api

Local development improvements:

• Added environments/browser/Dockerfile.local to support building the browser environment with a local version of hud-python, for development. This Dockerfile copies local sources and installs dependencies in editable mode.

Build scripts:

• scripts/build-and-push-env.sh, - for building and pushing multi-architecture (arm64, amd64) Docker images and manifests for any HUD environment.
• scripts/build_local.sh, - for building any HUD environment locally with support for Dockerfile.local and automatic lock file updates.

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Note

Adds a reusable browser base image and refactors the browser environment to use it, improves Playwright page handling/navigation, and adds scripts for multi-arch builds and local development.

• Docker/Environments:
  • Base Image: Introduce environments/browser/browser-base with Playwright/Chromium/VNC; publish as hudevals/hud-browser-base:latest.
  • Refactor: environments/browser/Dockerfile now builds from the new base image.
  • Local Dev: Add environments/browser/Dockerfile.local to build with local hud-python (editable install).
• Playwright/Browser Behavior:
  • Page Reuse: hud/tools/playwright.py reuses existing page if present (esp. CDP), else creates a new one.
  • Navigation Stability: environments/browser/server/tools.py now navigates with wait_for_load_state="networkidle" after launching apps.
• Scripts:
  • scripts/build-and-push-env.sh: build/push multi-arch images and manifests for any environment.
  • scripts/build_local.sh: build environments locally (supports Dockerfile.local) and updates hud.lock.yaml image reference.

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