Local R2 seed no longer opens a Cloudflare preview session for Workers AI, so `start:dev` works when `*.workers.dev` times out. | Dev Logs

Date: 2026-09-02 13:49 Summary: Local R2 seed no longer opens a Cloudflare preview session for Workers AI, so start:dev works when *.workers.dev times out. Visibility: people

[question] start-dev failed at upload:r2:local with ConnectTimeoutError to dailyonetools.workers.dev

[try to solve]

Context

build:site succeeded. npm run upload:r2:local then called getPlatformProxy({ persist: true }). Wrangler tried to create a remote preview session for the Workers AI binding in wrangler.jsonc, fetched *.dailyonetools.workers.dev:443, and hit UND_ERR_CONNECT_TIMEOUT (10s). start-dev exits on seed failure, so wrangler never started.

Ops docs had said local seed does not need Cloudflare. That stopped being true after the AI binding: wrangler 4.58 treats AI as always-remote. remoteBindings: false still printed the AI warning and still opened a preview session.

Process

1. Matched the stack to scripts/upload-r2-pages.mjs uploadLocal → getPlatformProxy.
2. Confirmed wrangler types: GetPlatformProxyOptions.remoteBindings defaults to true; AI is always picked as a remote binding.
3. Seed path now writes a minimal config (same worker name + r2_buckets only, stub scripts/lib/r2-seed-worker.mjs) so getPlatformProxy does not load AI or site assets.
4. Default start:dev writes .cache/wrangler.no-ai.json (full config minus ai) and runs wrangler dev --local -c that file.
5. Opt-in: --remote-bindings / -RemoteBindings uses the real wrangler.jsonc so Prompt AI can hit Cloudflare when the network works.

Root cause / analysis

Local persist R2 lives under .wrangler/state/v3/r2/onlinefreetools-pages-preview. That does not need the internet. The timeout was the AI preview token, not the mock bucket. SOCKS R2_HTTPS_PROXY would help remote upload:r2 (S3); it does not wrap wrangler’s preview-session fetch used here.

Solution

• scripts/lib/local-r2-platform-proxy.mjs: getLocalPlatformProxy() / writeWranglerConfigWithoutRemoteBindings().
• upload:r2:local and verify:r2 --local use the seed helper.
• Re-run .\ops\dev\start-dev.ps1 -NoBuild if _pages is already built.

Notes / boundaries

• Default local Prompt Expand/Polish will not call Workers AI until --remote-bindings.
• This machine’s getPlatformProxy smoke test can hang if a leftover workerd holds the persist lock; kill stray workerd/node from a failed seed before retrying.

[actions]

• Added seed stub worker and no-AI wrangler config writer; wired upload/verify/start-dev; documented --remote-bindings.