Next.js apps that use streaming SSR and React Server Components expose a new class of runtime "status" bugs—mismatched loading, error, and response-order states—that static linters and unit tests routinely miss and that often only manifest in production. This pain is concentrated in frontend and full‑stack teams building production web apps—roughly 400,000 teams globally—who already spend about $24K ACV on developer tooling and are sensitive to regressions that cause user-visible breakage. A practical product would combine a high-fidelity streaming SSR simulator, runtime instrumentation for local and CI replay, static/dynamic analysis to trace async control flow, and ML-assisted test-case and patch generation that can open PRs with safe fixes. Offerings should include integrations for Next.js, Vercel, GitHub Actions, and error tracking, plus both cloud scanning and an on‑prem agent to handle privacy-sensitive codebases. Market timing is favorable: streaming SSR adoption is increasing and advances in AI code analysis substantially improve the feasibility of automated detection and repair, making a $9.6B addressable market plausible (Market Score 92/100, Revenue Potential 88/100). To win you must deliver much higher fidelity than generic linters, keep false positives low, be conservative and transparent about auto-patches, and invest in tight Next.js specialization and CI-native workflows—technically difficult and maintenance-intensive, but defensible and valuable for teams experiencing these specific runtime failures.