Simplify agent-facing tool responses

[colinds]

Summary

• keep GraphQL operations, variables, raw Relay payloads, and opaque recommendation scores internal
• return compact, stable read and write result shapes with exact IDs and recovery information
• preserve direct delivery timing, meal customization, cancellation, tracking, and billing facts in detailed status
• make write previews show the replacement source and instructions
• shorten tool descriptions while retaining the rules agents need

Verification

• bun run check (208 tests in the local and Asia/Kolkata time zones)
• bun run smoke (packaged installs through bunx and npx)
• live read-only test against the checked-out MCP: profile, five deliveries, every status and menu, plus Friday search, recommendations, and explanation
• independent input/output contract audit and final diff review

No live write was sent.