contract-builder

name	contract-builder
description	Convert approved planning artifacts into an execution contract. Invoke when the user wants to start building, asks to move from planning to implementation, or when execution-contract.md is missing or stale.

Contract Builder

Converts planning artifacts into a single execution handshake: execution-contract.md. Use ${CLAUDE_PLUGIN_ROOT}/templates/execution-contract.md as the baseline structure.

Read before generating: proposal.md, specs/, design.md, tasks.md, docs/artifact-contract.md.

Artifact Mapping

Source	Extract
proposal.md → ## Why + ## What Changes	Intent Lock (problem + scope)
proposal.md → ## Scope > ### Out of Scope	Scope Fence
specs/ → each ### Requirement:	Approved Requirements, Scenarios, Test Obligations
design.md → ## Decisions	Architecture, Interface, Dependency Constraints
tasks.md → numbered task groups	Execution Batches, Completion Definitions, Review Timing

Cross-Check: Requirement Coverage

Before finalizing:

1. List every SHALL/MUST from specs/
2. Verify each is reflected in Approved Behavior, has a test obligation, and appears in at least one batch
3. Flag unmapped requirements in Escalation Rules
4. Note cross-batch dependencies

Contract Structure

Must make obvious: approved behavior, out-of-scope, constraints, batches, test obligations, review gates, and conditions that force a rewind to planning. Prefer compression over repeating planning details.

Approval Model (DP-3)

After drafting: summarize handoff rules, identify ambiguity, flag unmapped requirements, ask user to approve explicitly. After approval:

node "${CLAUDE_PLUGIN_ROOT}/scripts/spec-superflow.mjs" state set <change-dir> dp_3_result "approved: <summary>"
node "${CLAUDE_PLUGIN_ROOT}/scripts/spec-superflow.mjs" state set <change-dir> dp_3_timestamp $(date -u +%Y-%m-%dT%H:%M:%SZ)

DP-3 is a hard gate — no implementation without this record.

Stale Contract Detection

Refresh if: scope changed in proposal, requirements changed in specs, constraints changed in design, batches changed materially in tasks, or the contract no longer matches intent.

Hotfix Mode

Generate minimal contract: Intent Lock (one sentence), Task List (numbered), Approval Gate (DP-3). Skip Scope Fence, Build Rules, Review Gates, Test Evidence. Still requires DP-3 approval.

Guardrails

• Do not continue to implementation if ambiguity remains
• Do not approve the contract on the user's behalf
• Do not skip the contract because planning docs look complete
• Flag unmapped requirements; do not silently drop them

Post-Generation

Run node "${CLAUDE_PLUGIN_ROOT}/scripts/spec-superflow.mjs" state init <change-dir> to create .spec-superflow.yaml with hashes.

For hotfix, after writing the minimal contract, run node "${CLAUDE_PLUGIN_ROOT}/scripts/spec-superflow.mjs" state init <change-dir> or node "${CLAUDE_PLUGIN_ROOT}/scripts/spec-superflow.mjs" state rebuild <change-dir> so contract_hash is recorded. DP-3 remains mandatory before build.

Exception Handling

• Parse failures: Report specific file and section. Suggest re-running spec-writer.
• Missing files: List every missing artifact. Route back to spec-writer.
• User interruption: Re-read all artifacts on resume; check contract staleness via content comparison.
• Validation failure: Flag unmapped requirements in Escalation Rules and approval summary.