v0.16.0-rc6

Changelog

• 0cc793e fix "yarn install" invocation: --frozenlockfile -> --frozen-lockfile
• 3bf13c6 fix(yarn): add --frozen-lockfile to default install command
• cb9e4f0 fix(yarn): handle scoped packages in link dependency extraction
• f82d2ed fix(yarn): patch yarn.lock for link: dependencies and fix extraction path
• a19656c fix: validate dependencies after download to prevent cache inconsistency
• f552c5c test(s3): reduce flaky threshold for batch optimization test
• aa9a7a5 test(yarn): add tests for link dependency patching
• 8b9566a test(yarn): add tests for scoped package extraction