Core Changes

• Turbopack: FreeVarReference::ReportUsage: #89302
• Make Server Function logging opt-in via logging.serverFunctions: #89321
• Restore default-enabled Server Function logging: #89407
• Re-add build-complete traces for webpack: #89402
• Skip Server Function logging for 'use cache' functions: #89408

Misc Changes

• Turbopack: Move PrettyPrintError to turbo_tasks and add tests: #89280
• Update Rspack production test manifest: #89372
• Update Rspack development test manifest: #89371
• docs: replace 'can not' with 'cannot': #89354
• docs: Fix custom server code snippets: #89400

Credits

Huge thanks to @sokra, @mischnic, @unstubbable, @vercel-release-bot, @pavan-sh, @amannn, and @ijjk for helping!