v0.15.0

What's Changed

• Refactor transaction and lineage files, add cleanup indexes by @jerry-enebeli in #309
• Chore refactor performance cleanup by @jerry-enebeli in #310
• test(api): add HTTP tests for 32 uncovered routes, fix 4 bugs found by @jerry-enebeli in #311
• Every API error response now carries a structured error_detail object by @jerry-enebeli in #312
• Remove unused rate, currency_multiplier, and modification_ref columns by @jerry-enebeli in #313
• Add DoS guards and fix silent big.Int parse in lineage by @jerry-enebeli in #314
• Fixes and improvements by @jerry-enebeli in #315
• Queue inflight commit/void by default with idempotency and skip_queue by @jerry-enebeli in #316
• Add hash-chain processing and configuration by @jerry-enebeli in #317

Full Changelog: v0.14.5...v0.15.0