v0.5.0

Features

• SQLite engine support (--engine sqlite) - file-based, no server required
• Databases stored at ~/.herdux/sqlite/ by default; override with --host <dir>
• test:e2e:sqlite npm script and e2e-sqlite CI job (no Docker required)

Bug Fixes

• Connection resolver now skips port-based auto-discovery for portless engines (fixes --engine sqlite crash)
• sqlite added to the valid engines list (--engine sqlite no longer rejected)