Core Changes

• Add experimental.reportSystemEnvInlining for Turbopack: #89304
• fix: use signal-based exit codes to prevent inspector blocking exit: #89351
• Add Instant Navigation Testing API: #89465
• Support MPA navigations in instant(): #89469
• Handle Pages data route skew with deployment id header, take 2: #89325
• Include owner stack for forwarded errors if available: #89493
• [CC] Rename "unstable_prefetch" to "unstable_instant": #89448

Example Changes

• chore(examples): remove with-tigris example: #81843

Misc Changes

• Update Rspack production test manifest: #89423
• Update Rspack development test manifest: #89424
• Turbopack: improve suggestions for experimental.reportSystemEnvInlining: #89486
• docs: Fix syntax in proxy example code: #89395
• Add experimental flag to expose testing API in production builds: #89499

Credits

Huge thanks to @vercel-release-bot, @mischnic, @timneutkens, @acdlite, @JamBalaya56562, @ericrav, @huozhi, and @lubieowoce for helping!