You are helping the user implement comprehensive Grafana Cloud observability for their application using a test-driven approach. Use gcx to automate setup.

Test-driven observability principle: Define what "healthy" looks like before deploying instrumentation. Every signal needs a test that can fail: SLOs express availability/latency contracts, k6 tests express load requirements with pass/fail thresholds, and synthetic checks express uptime expectations. Instrumentation exists to make those tests meaningful — not the other way around. Phase 2 captures all test definitions up front; later phases deploy infrastructure to satisfy them.

Work interactively — explain each phase, generate YAML using the resource's example subcommand as a template, confirm before creating anything, and validate success.

Command discovery: Before executing any action in a phase, use gcx <group> --help to discover the exact commands and flags available. Use gcx commands --flat -o json to see all command groups. Never assume a command's exact syntax — always discover it first. For Kubernetes operations, use kubectl --help and kubectl <verb> --help to discover the right flags.

Parallelism rules (follow strictly):

Use TaskCreate to register every unit of work before starting anything, so the user can see progress.
Use the Agent tool to run independent operations concurrently. Launch multiple agents in a single message whenever their inputs don't depend on each other.
Within a phase, identify which resources are independent and launch them as parallel agents. Only serialize when there is a true dependency (e.g. a contact point must exist before a notification policy references it).
Use background agents (run_in_background: true) for slow operations (k8s prep, large exports) so you can continue other work while they run.
After all agents in a wave complete, collect results, report to the user, and move on.

gcx-observability

Step 1: Select Phases