feat: show deployment machines in CLI

[alongubkin]

Summary

• add alien deployments machines <deployment> backed by the existing Platform Machines inventory API
• show machine lifecycle, heartbeat, mesh convergence, peer counts, and observed machine-agent version
• support lossless --json output and put degraded/unknown mesh state first in human output
• refresh the checked-in Platform API contract and generated Rust client input

Validation

• cargo check -p alien-cli --features platform
• cargo test -p alien-cli machines_inventory_tests
• rustfmt --edition 2021 --check crates/alien-cli/src/commands/deployments.rs
• git diff --check

Generated API inputs originate from Platform pnpm run generate:api-openapi; the Rust client is generated by the crate build script.

[greptile-apps]

Greptile Summary

Adds a deployment-machine inventory command backed by the Platform API and completes structured JSON error routing for deployment commands.

• Adds alien deployments machines <deployment> with machine lifecycle, heartbeat, mesh health, peer counts, and agent-version output.
• Preserves complete API responses in JSON mode and prioritizes degraded machines in human-readable output.
• Refreshes the Platform OpenAPI contracts used to generate the Rust client.
• Routes both top-level and development deployment commands through the shared JSON-output detector.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the previously reported Machines and Create JSON error-routing issues are both addressed for top-level and development command paths.

Important Files Changed

Filename	Overview
crates/alien-cli/src/commands/deployments.rs	Adds machine-inventory retrieval and rendering while correctly recognizing Create and Machines structured-output modes.
crates/alien-cli/src/lib.rs	Routes top-level and development deployment commands through the deployment-specific JSON-output detector.
client-sdks/platform/openapi.json	Refreshes the checked-in Platform API contract with the machine-inventory endpoint and schemas.
client-sdks/platform/rust/openapi.json	Synchronizes the Rust client generator input with the refreshed Platform API contract.

_{Reviews (6): Last reviewed commit: "fix: preserve JSON errors for deployment..." | Re-trigger Greptile}