v0.7.0-rc.3

What's Changed

• fix(store): reflink-first ingest + CoW store accounting; bench measures real disk by @jleni in #371
• fix: clarify passthrough reason reporting by @jleni in #376
• fix: support x86 cc flags in monitor by @jleni in #377
• test: cover rustc version cache keys by @jleni in #378
• docs: describe kache as multi-language (Rust, C/C++ and more) by @emmanuelm41 in #379
• feat: publish to brew, apt & winget package managers by @emmanuelm41 in #374
• chore(release): bump to 0.7.0-rc.3 by @emmanuelm41 in #380
• fix(package-publish): gate on release upload + drop private builder image by @emmanuelm41 in #381

Full Changelog: v0.7.0-rc.2...v0.7.0-rc.3