[quickbeard]

Problem

After a fresh codevhub install, the TUI footer showed Big Pickle · OpenCode Zen even though a real gateway provider (netgate) was configured — and a first message would have gone to upstream's hosted Zen gateway instead of the configured one.

Both config writers dropped the top-level model pin in the last round (#142 / codev-hub#221), so with empty recents the TUI's fallbackModel (context/local.tsx) fell through to its last resort: a blind sync.data.provider[0]. The hosted Zen provider self-registers (its free models need no auth) during Provider.list()'s custom-loader loop, ahead of config-only providers, so it always occupies slot 0. The original Zen-hiding work covered the pickers, tips, and the footer/startup gate — but never this fallback path. (The server-side Provider.defaultModel already restricts its fallback to configured providers; the TUI's local fallback didn't.)

Fix

• component/use-connected.tsx: extract useConnected's existing predicate into an exported isConnectedProvider(provider); the hook delegates to it — gate/footer behavior unchanged. The free-Zen auto-registration fails it; a deliberately-authenticated opencode with paid models still passes.
• context/local.tsx: fallbackModel's last resort becomes sync.data.provider.find(isConnectedProvider) ?? sync.data.provider[0]. When only the Zen registration exists, behavior is unchanged (the configure gate is up in that state anyway).

Verification

• New test/component/use-connected.test.ts covers the predicate and the Zen-first-in-list selection; full TUI suite passes (247 tests), bun typecheck clean.
• Launched the TUI against a real repro state (netgate configured, empty model.json recents): footer now shows zai-org/GLM-4.7-cc netGate instead of Big Pickle OpenCode Zen.

DIVERGENCES.md row added for both upstream files; CHANGELOG entry under Unreleased.

Note for a follow-up in codev-hub: within the configured provider the default still resolves via the server's provider_default sort, not the model chosen in the install wizard — if the wizard's choice should stick, the hub needs to seed codev's model.json recents like the fork's own /configure flow does since #142.

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