Next.js v16.5.0-canary.41 — Release Notes & Engineering Impact

### Core Changes - feat(next/image): add internal image redirects (to match existing external image redirects): #98271 - Turbopack: show the source-mapped file in issue headers: #101161 - Add Request Insights filters and pause controls: #96924 - Avoid instrumenting Next.js telemetry requests: #97182 - Classify framework request activity: #96914 - Move optional lockfile parameters into options object: #101132 - Record Instant Insights validation worker spans: #98677 - Share local tracing across development runtimes: #98676 - [image-optimizer] Replace handleDevOutput with an 'optimized' flag in ImageOptimizerResult, make the caller responsible for blur svg placeholder generation: #101167 - [image-optimizer] Move previous cache entry reuse out of `next/image-optimizer-transform`: #101126 - Deeply freeze the loaded config in test mode: #99943 - fix: do not run onStage listeners for stages that were aborted: #95684 - Update font data: #101129 - Remove the experimental.lockDistDir opt-out option: #100747 - Keep loaded config from sharing objects with defaults and callers: #99942 ### Misc Changes - Fix effects applying when they didn't need to because expression was replaced: #101166 - fix: server actions entrypoint erroring build with `type: commonjs`: #101164 - skills: improve cache-aware navigation workflows: #101169 - docs: document experimental flags removed in Next.js 16: #101165 - docs: useServerInsertedHTML: #98671 - Turbopack: narrow async-module emptiness dependencies: #101154 - eval: measure Next Dev Loop on Pokédex: #100962 - Turbopack: internalize evaluation pool plumbing: #101143 - Turbopack: generate require.context as a synthetic module: #100526 - turbopack-node: linear IPC frame parsing with eager UTF-8 decoding: #99968 - turbo-tasks-backend: keep recorded GC roots until their TTL expires: #100279 - Turbopack: only read conditionally needed values where they are used: #101072 ### Credits Huge thanks to @styfle, @lukesandberg, @DavidIlie, @bgw, @jimmyhmiller, @lubieowoce, @aurorascharff, @icyJoseph, @jamiboym, and @mischnic for helping!