spike-skeleton — Multi-Module Walking Skeleton & Plumbing Proof

Operating Invariants

• Thin Tracer Only: Transmit only minimal dummy payloads (ping-pong tracer); forbid implementing complex business logic inside the skeleton.
• All-Seam Traversal: The skeleton must traverse the complete end-to-end pipeline: Input Port -> Adapter -> Serialization -> Transport / Bus -> Target Module -> Persistence Stub.
• Sandbox & Environment Boundary: Confine all exploratory scaffolding code strictly to .agents/scratch/ or dedicated git worktrees (.agents/worktree/); ground runners and services in .agents/environment.md. Never contaminate main branch history.
• Adaptive Invocation Output: Render the full proof report for humans; emit an integration status micro-token for autonomous runners.

Domain Rubric

1. Plumbing Verification

Verify that architectural plumbing functions under real runtime conditions: dependency injection wiring, schema and serialization compatibility between bounded contexts, port bindings, and inter-module communication protocols (HTTP, gRPC, event bus).

2. State

• CONFIRMED: End-to-end trace executes successfully with passing integration assertions.
• INFERRED: Trace succeeds partially but relies on mocked transport or unverified runtime assumptions.
• REJECTED: Incompatible protocols, serialization failure, or runtime blockers rule out the candidate architecture.
• UNRESOLVED: Environment limitations or missing permissions prevent end-to-end execution.