Make remote dev exchange_url optional

[penalosa]

Depending on the zone settings, a fetch to exchange_url can sometimes fail. This PR makes that fetch optional, falling back to the raw token provided by the control plane. Additionally, it removes the experimental tail logs flag, which is now always on.

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• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: existing tests should pass
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: internal refactor

A picture of a cute animal (not mandatory, but encouraged)

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[changeset-bot]

🦋 Changeset detected

Latest commit: f696f57

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[workers-devprod]

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• ✅ @cloudflare/wrangler

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commit: 5254ff9

[github-actions]

✅ All changesets look good

[devin-ai-integration]

Devin Review found 1 potential issue.

🐛 1 issue in files not directly in the diff

🐛 Incomplete tailLogs removal enables inspector proxy in remote mode without an inspector URL (packages/wrangler/src/api/startDevWorker/ProxyController.ts:414-418)

The PR removed the --experimental-tail-logs CLI flag (which had default: true), and stopped setting input.experimental.tailLogs in start-dev.ts. However, the check at ProxyController.ts:417 still gates inspector behavior on !this.latestConfig?.experimental?.tailLogs. Since tailLogs is now always false (because ConfigController.ts:375 computes !!input.experimental?.tailLogs from the now-absent input), the inspectorEnabled getter returns true for remote mode — the opposite of the previous default behavior.

Before this PR: tailLogs defaulted to true → !true = false → inspector disabled in remote mode.
After this PR: tailLogs is always false → !false = true → inspector enabled in remote mode.

But the PR also removed userWorkerInspectorUrl from the proxyData emitted by RemoteRuntimeController (RemoteRuntimeController.ts:307). So the InspectorProxyWorker is now started (ProxyController.ts:139) and receives reloadComplete messages (ProxyController.ts:457-461) with no inspector URL to connect to, which is a regression from the previous default behavior.

View 6 additional findings in Devin Review.

[NuroDev]

Blocking: Remove a placeholder console.log. Didn't realise console.log was part of a fixture. Not blocking.

The rest is just a few tiny cleanup bits. The rest LGTM.

[petebacondarwin]

LGTM with a few nits.

[workers-devprod]

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• ✅ @cloudflare/wrangler

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