[swc-playground] Update to Next.js v16.3.4

[TooTallNate]

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Latest commit: 59f2fbf

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[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
example-nextjs-workflow-turbopack	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
example-nextjs-workflow-webpack	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
example-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-astro-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-express-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-fastify-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-hono-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-nestjs-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-nitro-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-nuxt-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-python-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-sveltekit-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-tanstack-start-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workbench-vite-workflow	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workflow-docs	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workflow-swc-playground	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workflow-tarballs	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC
workflow-web	Ready	Preview, v0	Sep 8, 2026 7:55pm UTC

[github-actions]

🧪 E2E Test Results

✅ All tests passed

⚠️ Flaky E2E Tests (passed on retry)

These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.

• cancelRun via CLI - cancelling a running workflow (nextjs-turbopack)
• cancelRun via CLI - cancelling a running workflow (nextjs-webpack)
• cancelRun via CLI - cancelling a running workflow (nitro)
• step-return-value serialization failure is catchable in workflow code (nextjs-turbopack)

🛠 Infra Events (absorbed by the harness)

Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.

• cold-start-warmup · suite warmup (tanstack-start) · at 19:56:54Z · abandoned wrun_01M219FRRYRF0YHDNV9QY5H9SN
• run-pickup-stall · step-argument serialization failure is catchable in workflow code (nuxt) · at 19:57:51Z · abandoned wrun_01M219HWJB0B6THZ13B6J38ZFW
• run-pickup-stall · Calculator.calculate - static workflow method using static step methods from another class (fastify) · at 19:58:08Z · abandoned wrun_01M219JD1TW1QE7ZSXARTMNHCT
• run-pickup-stall · hookCleanupTestWorkflow - hook token reuse after workflow completion (nextjs-webpack) · at 20:00:58Z · abandoned wrun_01M219QK5YFM84THFKPRANFPF1
• run-pickup-stall · concurrent hook token conflict - two workflows cannot use the same hook token simultaneously (nextjs-webpack) · at 20:01:01Z · abandoned wrun_01M219QNR0VDT67Z31YP0T6WKN

E2E Test Summary

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	3636	0	684	4320
✅ 💻 Local Development	3922	0	558	4480
✅ 📦 Local Production	3922	0	558	4480
✅ 🐘 Local Postgres	3922	0	558	4480
✅ 🪟 Windows	320	0	0	320
✅ 🌐 Cross-language Conformance	68	0	73	141
✅ vercel-http-transport	817	0	143	960
✅ vercel-multi-region	27	0	0	27
✅ vercel-ws-transport	553	0	87	640
Total	17187	0	2661	19848

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro-node	132	0	28
✅ astro-quickjs	132	0	28
✅ example-node	132	0	28
✅ example-quickjs	132	0	28
✅ express-node	132	0	28
✅ express-quickjs	132	0	28
✅ fastify-node	132	0	28
✅ fastify-quickjs	132	0	28
✅ hono-node	132	0	28
✅ hono-quickjs	132	0	28
✅ nest-node	132	0	28
✅ nest-quickjs	132	0	28
✅ nextjs-turbopack-node	157	0	3
✅ nextjs-turbopack-quickjs	157	0	3
✅ nextjs-webpack-node	157	0	3
✅ nextjs-webpack-quickjs	157	0	3
✅ nitro-node	132	0	28
✅ nitro-quickjs	132	0	28
✅ nuxt-node	132	0	28
✅ nuxt-quickjs	132	0	28
✅ python-node	66	0	94
✅ sveltekit-node	151	0	9
✅ sveltekit-quickjs	151	0	9
✅ tanstack-start-node	132	0	28
✅ tanstack-start-quickjs	132	0	28
✅ vite-node	132	0	28
✅ vite-quickjs	132	0	28

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack-node	160	0	0
✅ nextjs-turbopack-quickjs	160	0	0

✅ 🌐 Cross-language Conformance

App	Passed	Failed	Skipped
✅ python	68	0	73

✅ vercel-http-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ hono	132	0	28
✅ nextjs-turbopack	157	0	3
✅ nitro	132	0	28
✅ vite	132	0	28

✅ vercel-multi-region

App	Passed	Failed	Skipped
✅ nextjs-turbopack	27	0	0

✅ vercel-ws-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ nextjs-turbopack	157	0	3
✅ vite	132	0	28

---

📋 View full workflow run

[github-actions]

📊 Workflow Benchmarks

commit 59f2fbf · Tue, 08 Sep 2026 20:08:23 GMT · run logs

Backend: vercel · app: nextjs-turbopack

Metric	Scenario	Best (ms)	P75 (ms)	P90 (ms)	P99 (ms)	Samples
TTFS	step	1068 (+442%) 🔻	1228 🔴 (+15%) 🔻	1239 🔴 (+14%)	1385 🔴 (+16%) 🔻	30
TTFS	stream	1094 (+522%) 🔻	1247 🔴 (+23%) 🔻	1264 🔴 (+23%) 🔻	1338 🔴 (+29%) 🔻	30
TTFS	hook + stream	466 (-57%) 💚	1576 🔴 (+33%) 🔻	1604 🔴 (+25%) 🔻	5338 🔴 (+169%) 🔻	30
Fan-out TTFS	Promise.all(100 steps)	586 (-1.3%)	1156 (-33%) 💚	2172 (+24%) 🔻	2499 (+36%) 🔻	10
Fan-out TTLS	Promise.all(100 steps)	2187 (+39%) 🔻	4382 (+15%)	5203 (+32%) 🔻	8764 (-19%) 💚	10
STSO	1020 steps (inline)	92 (-11%)	132 (-7.0%)	151 (-9.0%)	722 (+138%) 🔻	1019
WO	1020 steps	142877 (-3.1%)	142877 (-3.1%)	142877 (-3.1%)	142877 (-3.1%)	1
CRTT	first chunk (pooled)	56 (-14%)	108 (-19%) 💚	178 (-0.6%)	223 (-18%) 💚	28

Streams

Scenario	CRTT 1st	p75	p90	p99	CDV max	iters
paced control (100/s, 60B)	69.5 (-20%)	115 (-26%)	157 (-29%)	261 (-34%)	88.5 (-44%)	10
size sweep (100/s, 160B-12KB)	69 (-29%)	114 (-57%)	156 (-69%)	299 (-68%)	104 (-57%)	10
replay gateway-gpt-5.4-nano-2000t (1x)	78 (-24%)	143 (-20%)	395 (+17%)	846 (+27%)	175 (-46%)	3
replay eve-gpt-5.6-sol-2000t (1x)	98.5 (-41%)	116 (-23%)	150 (-25%)	360 (-13%)	292 (-25%)	2
replay eve-gpt-5.6-sol-2000t (2x)	167 (+20%)	138 (-44%)	173 (-51%)	277 (-45%)	195 (-47%)	3

📈 STSO distribution vs main (inline / queue-hop histograms)

1020 steps (inline)

Cumulative STSO time: main 147324ms → this run 142750ms (Δ -4574ms, -3%)

   50-100 ms  ┃                         main   0  this   1    +1
  100-150 ms  ██████████████████████░┃  main 819  this 904   +85
  150-200 ms  █┃██                      main 159  this  82   -77
  200-250 ms  ┃                         main  23  this  11   -12
  250-300 ms  ┃                         main   7  this   4    -3
  300-350 ms  ┃                         main   4  this   1    -3
  350-400 ms  ┃                         main   2  this   1    -1
  400-450 ms  ┃                         main   1  this   1    +0
  450-500 ms  ┃                         main   2  this   0    -2
  500-550 ms  ┃                         main   1  this   2    +1
  700-750 ms  ┃                         main   0  this   4    +4
  750-800 ms  ┃                         main   0  this   1    +1
  800-850 ms  ┃                         main   0  this   2    +2
  850-900 ms  ┃                         main   0  this   1    +1
1150-1200 ms  ┃                         main   0  this   1    +1
1200-1250 ms  ┃                         main   0  this   1    +1
1300-1350 ms  ┃                         main   0  this   1    +1
1500-1550 ms  ┃                         main   0  this   1    +1
3750-3800 ms  ┃                         main   1  this   0    -1

📈 CRTT drill-down vs main (RTT distributions & profiles)

variant  RTT 1ms→5s+             avg         p50         p90         p99     n
control  ······█▆▁····   98.6 (-23%)   93 (-24%)  157 (-29%)  261 (-34%)  3000
sweep    ·····▁█▆▁····   99.7 (-45%)   94 (-31%)  156 (-69%)  299 (-68%)  3000
gw 1x    ·····▁█▅▁▁···  119.1 (-20%)   92 (-27%)  395 (+17%)  846 (+27%)  5295
eve 1x   ·····▁█▆▁▁···  100.7 (-24%)   92 (-21%)  150 (-25%)  360 (-13%)  5186
eve 2x   ·····▁▅█▁····  118.5 (-38%)  109 (-36%)  173 (-51%)  277 (-45%)  7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):

control  ▇▃▄▄█▄▃▂▂▁  91–111ms
sweep    █▄▁▄▂▂▂▁▁▂  91–128ms
gw 1x    █▇▃▂▁▁▁▂▂▁  88–207ms
eve 1x   ▂▁▃▅█▄▅▇▃▃  85–121ms
eve 2x   ▁▁▁▁▁▃▅█▄▃  107–153ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):

sweep  ▇██▆▄▂▁  97–102ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):

control  ▂▁▂▃█▇▃▃▂▂  27–31ms
sweep    ▁▇▅█▆▄▅▅▄▄  30–47ms
gw 1x    ██▄▂▁▁▂▂▂▂  26–40ms
eve 1x   ▂▁▃▃▇▂▇█▂▆  18–25ms
eve 2x   ▅▃▁▁█▅▇▆▃█  18–23ms

ℹ️ Metric definitions & methodology

_{Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.}

_{The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.}

_{The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.}

_{Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.}

_{Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)}

_{Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles}

_{Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000t eaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t 6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041}

_{🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600}

_{All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).}

_{Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.}

[Copilot]

🟢 Approval recommended

The dependency bump is valid and isolated to the playground’s package manifest with no issues identified in the changed lines.

Pull request overview

Updates the swc-playground workbench app to use a newer pinned Next.js version, keeping the playground aligned with recent Next.js runtime behavior for compiler/plugin experimentation.

Changes:

• Bump next dependency in workbench/swc-playground from 16.2.11 to 16.3.4.
• Minor dependency list reordering to keep JSON formatting consistent (trailing comma / placement of workflow).

File summaries

File	Description
workbench/swc-playground/package.json	Updates the Next.js version used by the SWC playground app and adjusts dependency ordering/formatting accordingly.

Review details

• Files reviewed: 1/2 changed files
• Comments generated: 0
• Review effort level: Lite

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[github-actions]

Sim World

Simulated world deterministic testing for races. Traces

🟠 world-sim scenario book — 1 fail of 41 total

fence=per-spec

scenario	outcome	events	virt	replay	violations
✅ smoke-no-steps	completed	3	0ms	ok	0
✅ smoke-one-step	completed	6	0ms	ok	0
✅ hook-at-step-started	completed	12	0ms	ok	0
✅ hook-at-step-completed	completed	12	0ms	ok	0
✅ hook-at-hook-created	completed	12	0ms	ok	0
✅ deadline-hook-wins	completed	7	1.0h	ok	0
✅ deadline-expires	completed	7	1.0h	ok	0
✅ long-sleep	completed	11	30.0d	ok	0
✅ hook-never-arrives	stalled	3	0ms	skipped	0
✅ step-retries-twice	completed	10	2.0s	ok	0
✅ parallel-steps	completed	9	0ms	ok	0
✅ hook-on-execution-state	completed	12	0ms	ok	0
✅ peek-hook-before-branch	completed	12	0ms	ok	0
✅ peek-hook-after-branch	completed	12	0ms	ok	0
✅ peek-hook-at-registration	completed	12	0ms	ok	0
✅ race-hook-before-probe	completed	12	0ms	ok	0
✅ race-hook-after-probe	completed	12	0ms	ok	0
✅ race-duplicate-delivery	completed	13	0ms	ok	0
✅ attr-hook-before-step	completed	11	0ms	ok	0
✅ attr-hook-after-step	completed	11	0ms	ok	0
✅ attr-from-step-body	completed	13	0ms	ok	0
✅ fork-hook-after-timeout	completed	14	1.0m	ok	0
✅ fork-hook-before-timeout	completed	14	1.0m	ok	0
✅ count-hook-after-timeout	completed	17	1.0m	ok	0
✅ count-hook-before-timeout	completed	20	1.0m	ok	0
✅ stale-read-step-count-fork	completed	20	1.0m	ok	0
✅ stale-read-equal-step-counts	completed	14	1.0m	ok	0
✅ step-vs-step-fork	completed	12	0ms	ok	0
✅ step-vs-step-fork-fenced	completed	12	0ms	ok	0
✅ fence-catches-benign-direction	completed	12	5ms	ok	0
✅ in-flight-before-decision	completed	17	1.0m	ok	0
❌ in-flight-before-decision-counted	completed	17	1.0m	ok	0
✅ in-flight-after-decision	completed	19	2.0m	ok	0
✅ stale-read-step-count-fork-fenced	completed	20	1.0m	ok	0
✅ fork-hook-wins	completed	13	1.0m	ok	0
✅ fork-timeout-wins	completed	13	1.0m	ok	0
✅ unclaimed-payload-under-fork	completed	17	1.0m	ok	0
✅ claimed-payload-under-fork	completed	17	1.0m	ok	0
✅ writers-independent-step-bodies	completed	12	0ms	ok	0
✅ writers-scripted-tempo	completed	12	0ms	ok	0
✅ cancel-mid-step	cancelled	7	0ms	skipped	0

Full trace: world-sim.txt

[github-actions]

Framework	Flow route	Step reg.	Framework output
hono	201.6 KiB (±0)	40.8 KiB (±0)	1.77 MiB (±0)
nextjs-turbopack	207.0 KiB (±0)	439 B (±0)	768.8 KiB (+55 B)

About these numbers

Sizes are gzip; parentheses show the change against main.
Flow route and Step reg. gate this job, on raw bytes rather than the gzip shown, at max(2%, 50.0 KiB). Framework output is informational.

59f2fbf · run

[github-actions]

No backport to stable for b30ed49 (AI decision).

This is a routine dependency bump (Next.js 16.2.11 -> 16.3.4) for the internal workbench/swc-playground demo app plus the resulting pnpm-lock.yaml churn, with no indication it addresses a security vulnerability or a bug affecting stable. Routine, non-security dependency upgrades are explicitly out of scope for the maintenance line, and nothing in any published package changes.

To override, re-run the Backport to stable workflow manually via workflow_dispatch and paste this commit SHA into the ref input:

b30ed49187a0d637de25fac461a6fc9c8c2973a6