Add memory allocation check to e2e-tests global setup

[dominickendrick]

What

Adds a fast-failing memory check at the start of the Playwright globalSetup for the e2e tests.

Before any Testcontainers are started, assertSufficientMemory() compares os.totalmem() against a required threshold (REQUIRED_MEMORY_GB = 30). If the Docker host/VM has less memory than required, it logs a clear message and calls process.exit(1), terminating the run immediately.

Why

The full local Grid stack (Elasticsearch, LocalStack, and the eight Grid services) needs a substantial amount of memory. When Docker is under-provisioned, the stack fails to start in confusing, hard-to-diagnose ways (timeouts, OOM-killed containers). This check surfaces the real problem up front with an actionable message: increase the memory allocated to Docker.

How

• Uses Node's built-in os.totalmem() — cross-platform, no shell subprocess.
• Runs as the first step in globalSetup, so it fails before spinning up any containers.
• On failure prints the available vs required memory to stderr and exits non-zero.

Testing

• Ran the e2e setup locally on a machine with sufficient memory: check passes and prints the OK: ... line.

Observed Error when allocation is not enough

• Verified TypeScript compiles with no errors.

[github-actions]

Deploy build 15103 of media-service::grid::all to TEST

All deployment options

• Deploy build 15103 of media-service::grid::all to TEST
• Deploy parts of build 15103 to TEST by previewing it first
• What's on TEST right now?

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From guardian/actions-riff-raff.