[samolusey]

Summary

This PR addresses four issues to improve the plan and subscription contracts:

#61: Plan renaming without changing financial terms

• Added rename_plan(merchant, plan_id, name) to allow merchants to fix typos
• Same name validation as plan creation (1-64 bytes)
• Emits PlanRenamed event
• Does not affect existing subscriptions

#62: Pagination for plan listings

• Added get_plans_by_merchant_page(merchant, cursor, page_size) with cursor-based pagination
• Added get_active_plans_page(cursor, page_size) for active-only plans
• Page size capped at 1-1000 to prevent resource exhaustion
• Cursor-based pagination returns next_cursor (0 = no more pages)

#68: Per-token volume tracking in registry

• Added token field to SubscriptionRecord so registry knows which token each subscription uses
• Added get_token_volume(token) to query total volume per token
• This fixes the caveat in docs/registry.md where volume was meaninglessly summed across tokens
• Updated subscription contract to pass token when registering subscriptions

#60: Bulk subscription cancellation with work-bounding

• Added cancel_all(subscriber, token) to cancel all open subscriptions for a token
• Work-limited to 10 subscriptions per call to prevent resource exhaustion
• Returns (count_processed, has_more) to support pagination
• Reuses single-cancel logic to enforce REVOCATION uniformly
• Failures in allowance/registry updates don't block cancellation

Test plan

• All contracts compile with make check
• Pagination handles edge cases: empty results, partial pages, exact boundaries
• rename_plan validates name length and requires merchant auth
• Per-token volume calculation is accurate across multiple tokens
• cancel_all processes subscriptions in batches and can be called repeatedly
• Final subscriptions (Cancelled/Exhausted) are not affected by cancel_all

Closes #68
Closes #62
Closes #61
Closes #60

[drips-wave]

@samolusey Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits