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Fix issues #199, #202, #203, #231: Contract security enhancements and documentation#1

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Fix issues #199, #202, #203, #231: Contract security enhancements and documentation#1
Mosas2000 wants to merge 3 commits into
devmocrea:masterfrom
Mosas2000:feature/contract-security-enhancements

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Summary

This PR addresses four open issues with comprehensive fixes and documentation:

Issue ChaoLing140#203 (High Priority) - Enforce calculated premium in create_policy

  • ✅ Added premium verification in create_policy() to prevent incorrect premiums
  • ✅ Contract enforces that provided premium matches calculated amount
  • ✅ Added PremiumMismatch error type
  • ✅ Comprehensive tests for premium enforcement

Issue ChaoLing140#199 (Low Priority) - Add max policy count limit

  • ✅ Implemented configurable max policy limit (default: 1,000,000)
  • ✅ Added set_max_policies() and get_max_policies() admin functions
  • ✅ Policy creation checks counter against limit
  • ✅ Added MaxPoliciesReached error type
  • ✅ Tests verify limit enforcement

Issue ChaoLing140#202 (Medium Priority) - Add slippage protection on risk pool withdrawal

  • ✅ Implemented reserve ratio system (default: 20%)
  • ✅ Added pending claims reserve calculation
  • ✅ Withdrawals blocked if they would impair pending claims
  • ✅ Added set_reserve_ratio() and get_reserve_ratio() admin functions
  • ✅ Added InsufficientPoolReserve error type
  • ✅ Tests cover edge cases

Issue ChaoLing140#231 (Medium Priority) - Add missing architecture and API documentation

  • ✅ Created docs/ARCHITECTURE.md with system overview and component diagrams
  • ✅ Created docs/API.md with complete endpoint documentation
  • ✅ Created docs/ORACLE.md with oracle integration specs
  • ✅ Created docs/FRONTEND.md with component architecture guide

Changes

  • Modified: smartcontract/src/lib.rs, error.rs, storage.rs, risk_pool.rs, test.rs
  • Added: docs/ARCHITECTURE.md, docs/API.md, docs/ORACLE.md, docs/FRONTEND.md

Testing

All new features include comprehensive test coverage with passing tests.

Closes ChaoLing140#199, ChaoLing140#202, ChaoLing140#203, ChaoLing140#231

- Enforce calculated premium in create_policy to prevent incorrect premiums
- Add configurable max policy count limit with admin controls
- Add slippage protection on risk pool withdrawals with reserve ratio
- Implement pending claims reserve calculation to protect liquidity
…ontend

- Create ARCHITECTURE.md with system overview and component diagrams
- Create API.md with complete endpoint documentation and examples
- Create ORACLE.md with oracle integration specs and data feeds
- Create FRONTEND.md with component architecture and development guide
- Test premium verification enforcement
- Test max policy count limit functionality
- Test risk pool reserve ratio protection
- Verify admin-only access controls
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[Contracts] Add max policy count limit

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