Add remote execution for package-backed managed tests

[Luc45]

Summary

• Add an explicit --remote execution switch to run:activation, run:woo-api, and run:woo-e2e.
• Reuse the existing Manager enqueue, ZIP upload, async, and polling path while keeping local package execution as the default.
• Reject worker recursion and unsupported local-only configuration instead of silently dropping configuration on remote runs.
• Preserve package test types in lifecycle CTRF data and resolve metadata for cached local extensions.

Why

The package-backed managed commands now execute locally by default. Callers that need horizontal execution through the Manager still need an explicit, composable route: --remote chooses where the test runs, while --async independently chooses whether the caller waits.

Local ZIPs use the existing upload flow: the CLI uploads the build, enqueues its upload_id, and the remote worker downloads it before running the package locally. Generic run:e2e remains local because its blueprints, environments, secrets, volumes, and arbitrary package configuration do not have a lossless remote contract.

Behavior

• No flag: local synchronous package run, unchanged.
• --remote: enqueue through the Manager and wait.
• --remote --async --json: enqueue and return the test_run_id.
• --extension_set: remains implicitly remote for backward compatibility.
• Inner CI workers reject remote recursion through QIT_TEST_RUN_ID.

Validation

• RunManagedTestExtensionSetTest: 37 tests, 133 assertions.
• ExtensionResolverWooVersionTest: 8 tests, 11 assertions.
• TestPackageManifestTest: 11 tests, 32 assertions.
• Targeted PHPCS, PHP lint, and git diff --check pass.
• Full unit suite, PHPStan, and Phan passed before the final focused metadata commit; the changed metadata code is covered by the focused tests and PHPCS.

Compatibility note

Remote execution now fails closed when the effective qit.json configuration contains unsupported local-only keys. This is intentional: silently ignoring those values could run a different test plan remotely.