Release v0.5.0

[bug-ops]

Summary

Minor release with zero-cost GAT migration, comprehensive security hardening, and generic type system refactoring.

Key Changes

Performance

• Zero-Cost GAT Migration: Complete removal of async_trait overhead (1.82x faster)
  • 11 async_trait traits removed, 8 new GAT traits added
  • Static dispatch replaces dynamic dispatch
  • Zero heap allocations in async operations

Security

• Phase 1 & 2 Security Hardening: DoS protection and input validation
  • Bounded iteration: MAX_SCAN_LIMIT (10,000) prevents unbounded iteration
  • Input validation: Multi-layer validation for pagination, query criteria, filters
  • Memory protection: Bounded HashMap allocation, stats caching with 5s TTL
  • Type safety: saturating_f64_to_u64() handles edge cases

Infrastructure

• Generic Type System Refactoring:
  • Generic Id and IdDto wrappers
  • Generic InMemoryStore<K, V>
  • gat_port! macro for declarative GAT traits

Code Quality

• Zero clippy warnings
• Clean Architecture compliance
• 2,593 tests passing (87.35% coverage)

Breaking Changes

• async_trait removal: Replace CacheRepository with CacheGat, StreamSessionRepository with StreamRepositoryGat
• Error types: NotFound errors replace empty results

Migration Guide

See CHANGELOG.md for detailed migration instructions.

Test Plan

• All 2,593 tests passing
• Zero clippy warnings
• Code formatted with nightly rustfmt
• Security integration tests (367 tests)
• Cross-platform validation (Linux, macOS, Windows)

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main      #81      +/-   ##
==========================================
+ Coverage   81.83%   81.93%   +0.10%     
==========================================
  Files          90       90              
  Lines       25205    25205              
==========================================
+ Hits        20626    20652      +26     
+ Misses       4579     4553      -26     

Flag	Coverage Δ
pjs-core	81.51% <ø> (+0.11%)	⬆️
pjs-domain	86.00% <ø> (ø)
pjs-wasm	82.75% <ø> (ø)

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