v0.4.2

What's Changed

• feat: add BM25 and hybrid retrieval by @vkehfdl1 in #37
• feat: harden watch integration and sync stats by @vkehfdl1 in #38
• fix: guard Windows watch flag in release artifacts by @vkehfdl1 in #48
• feat: expose sync and index timing state by @vkehfdl1 in #45
• test(cli): guard Windows release flag contract by @vkehfdl1 in #49
• perf(manifest): skip unchanged file rehashes by @vkehfdl1 in #47
• fix(embedder): handle model context overflow by @vkehfdl1 in #51
• fix: reset vector store on forced init by @vkehfdl1 in #50

Full Changelog: v0.3.0...v0.4.2