Publish bounded SaaS tool and reversible-write recipes

Goal

Expand the adapter examples into reusable patterns for account/resource reads, low-risk reversible writes, audit history, idempotency, conflict-safe undo, and explicitly unavailable high-risk operations.

Scope

• Capability-matrix template.
• Authorization and role checks at execution time.
• Canonical domain-service adapter examples.
• Idempotent writes and audit/change records.
• Undo with version/conflict protection.
• Validation, revoked access, duplicate delivery, and failure tests.

Acceptance criteria

• At least three domain-neutral read patterns and two reversible-write patterns ship with tests.
• No example exposes generic SQL, HTTP, shell, arbitrary fetch, or direct model database access.
• High-risk payments, purchases, signatures, permissions, destructive actions, and third-party messages remain unavailable.
• MCP Analytics summaries exclude raw identifiers, values, inputs, and results.