ci: expand syntax check coverage for Python packages and GitHub scripts

[Nitro-Builds-Yash]

Summary

Expand syntax verification in .github/workflows/ci.yml so that:

1. Python compileall check includes previously omitted root scripts (launcher.py, setup.py) and top-level packages (companion, config, integrations, mcp_servers).
2. Node check includes .github/scripts/*.js in addition to static/app.js and static/js/**/*.js.

This ensures any syntax error in newly introduced scripts or packages is caught early in CI before merge.

Target branch

• This PR targets dev, not main. (Note: targeting main as dev branch is not present on upstream)

Linked Issue

Fixes #19

Type of Change

• Bug fix (non-breaking — fixes a confirmed issue)
• New feature (non-breaking — adds new behaviour)
• Breaking change (changes or removes existing behaviour)
• Refactor / cleanup (behaviour unchanged)
• Documentation only
• CI / tooling / configuration

Checklist

• I searched open issues and open PRs — this is not a duplicate.
• This PR targets main
• My changes are limited to the scope described above — no unrelated refactors or whitespace changes mixed in.
• I actually ran the app (docker compose up or uvicorn app:app) and verified the change works end-to-end. Type-checks and unit tests are not enough.

How to Test

Run the exact compileall command locally: python -m compileall -q app.py launcher.py setup.py companion config core integrations mcp_servers routes scripts services src tests. Run the node check on scripts: node --check .github/scripts/check-issue-description.js .github/scripts/check-pr-description.js. Both commands exit with status 0.