fix(server): refresh model catalog without CLI update checks

[macodev00]

Fixes pingdotgg#13244

What Changed

enableProviderUpdateChecks no longer gates the remote model-manifest fetch. ModelManifest.refresh and forceRefresh still update the catalog when Settings → General → Provider update checks is off. CLI version lookups stay behind that switch.

Why

The setting is described as checking installed provider CLI versions, but the same flag returned before ModelManifest fetched model-manifest.json. New models that exist only on the remote catalog stayed out of the picker until the switch was turned back on, including an explicit Refresh provider status.

Verification

From apps/server on Node 24.13.1:

vp test run src/provider/ModelManifest.test.ts

Result: 1 file passed, 16 tests passed (1.01s). This includes fetches the remote manifest when provider update checks are disabled, which covers both the TTL refresh and explicit forceRefresh.

vp test run src/provider/providerMaintenance.test.ts -t "does not fetch latest provider versions when update checks are disabled"

Result: 1 passed, 27 skipped. CLI version lookups stay gated by the setting.

Checklist

• This PR is small and focused
• I explained what changed and why
• No UI changes
• No animation or interaction changes

Implemented by Grok 4.7 in Cursor.

  

[macodev00]

Opened upstream.