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Jimmy LaiandGitHub
31541356c2
## What Adds the `experimental.requestInsights` flag, a private dev snapshot endpoint, and HMR snapshot/update transport so running dev servers can expose recent request insights to tools and browser clients. Stack: 1. request insights: record local framework spans (1/5) 2. request insights: derive request history and fetch data (2/5) 3. request insights: expose dev snapshots to tools and HMR (3/5) ← current 4. request insights: add agent diagnosis access (4/5) 5. request insights: add DevTools request panel (5/5) ## Review Focus - Dev-only gating for `experimental.requestInsights`. - Private endpoint behavior when enabled and disabled. - HMR snapshot/update shape and client-side retention. ## Proof In This PR - `pnpm --filter=next types` - Stack-tip Cache Components smoke verifies the endpoint and HMR-fed overlay state against a running dev server. ## Deferred Coverage - A dedicated isolated dev-server transport test can follow if reviewers want cheaper per-PR coverage than the stack-tip smoke. <!-- NEXT_JS_LLM_PR --> --------- Co-authored-by: Tim Neutkens <[email protected]>