HeliosDB Full v8.0.3 Release Notes

Theme: UUID literal coercion fix + persistence reproducer hardening

Highlights

v8.0.3 is a maintenance / hardening point release on the v8.0 line. The headline change is the cross-edition UUID literal coercion fix at PK index lookup, ported from the Nano edition (Nano #205). v8.0.3 also rolls in several quality fixes that landed alongside it.

What’s New

UUID Literal Coercion Fix at PK Index Lookup

Root-cause fix to UUID literal coercion at PK index lookup (back-port from Nano #205).
Affects any DML that compares a UUID literal against a UUID PK column.
Pre-fix behaviour: certain client encodings (notably ORM-emitted UUIDs from JDBC, Prisma, sqlx) failed PK lookup despite logically matching values.
Post-fix behaviour: literal coercion happens before index probe, so all standard UUID encodings hit the PK index correctly.

Quality Fixes

Type-aware extended-protocol path (PostgreSQL extended query Parse / Bind / Describe / Execute).
Persistence improvements.
Persistence regression coverage paired with the UUID fix above.

Migration

Drop-in upgrade from v8.0.0 → v8.0.3. No SQL or wire-protocol breaking changes. Anyone hitting UUID-literal PK lookup mismatches on v8.0.0 should upgrade.

Compatibility Matrix

Component	Version
Source revs covered	v8.0.0 → v8.0.3
PostgreSQL wire	v3 (incl. type-aware extended path)
MySQL wire	v10
MongoDB wire	v6
Redis protocol	RESP2 + RESP3, 134+ commands
MCP protocol	spec 2024-11-05
Build (minimal)	Rust 1.85+