[create-croco-app] Add per-smoke-case artifact bundles and recovery summaries

[kang-heewon]

Problem

Generated app smoke covers many presets and runtime targets. When a case fails, maintainers need a compact artifact bundle and a direct local rerun command instead of searching through long CI logs.

Desired outcome

Each generated smoke case produces actionable failure evidence and recovery guidance.

Acceptance criteria

• Store per-case stdout, stderr, generated package manifests, Croco manifests, and relevant config files when a smoke case fails.
• Add a recovery summary with the exact local rerun command for each failed case.
• Split deterministic failures from suspected flaky failures in the report schema.
• Surface failed case summaries in the GitHub Actions job summary.
• Add tests for the generated smoke report shape.