fix(agent): expose built-in origin to clients - #59656

Issue for this PR

Closes #50269

Related: #57812, #59642

Type of change

• Bug fix

What does this PR do?

Restores the built-in/custom agent distinction on the public agent API.

V1 carried native on every agent: true for built-in agents and false for agents defined in config. V2 dropped the field from the public Agent.Info, so the app's hasCustomAgent() check (native === false) always returned false. A custom primary agent therefore never auto-revealed the composer agent picker, and users with the default "Show agent" setting had no way to select it.

• packages/schema/src/agent.ts: add optional native to Agent.Info.
• packages/core/src/plugin/agent.ts and packages/core/src/plugin/plan.ts: mark all built-in agents as native = true.
• packages/core/src/config/plugin/agent.ts: mark newly created config agents as native = false. Overrides of a built-in agent keep the built-in value, matching V1.
• packages/app/src/runtime/server/global-sync/utils.ts: forward native through normalizeAgentList, which previously dropped it.
• packages/client/src/promise/generated/types.ts: regenerated from the schema.

The hidden-by-default product behavior is unchanged: the picker still requires Settings → General → Show agent, but it now appears automatically when a custom primary agent exists, as it did before V2.

How did you verify your code works?

• packages/core: bun test test/config/agent.test.ts test/plugin/plan.test.ts — 51 pass / 0 fail. The new cases assert a built-in override stays native: true, a config-defined agent is native: false, and the Plan agent is native: true.
• packages/app: bun test --conditions=solid --isolate --preload ../ui/test/solid-jsx.ts --preload ./happydom.ts src/runtime/server/global-sync/utils.test.ts src/providers/models/agent.test.ts — 14 pass / 0 fail. The adapter case now asserts native reaches the UI model.
• packages/schema: bun test — 89 pass / 0 fail.
• Turbo typecheck: 32/35 packages pass. The other three (www, posts, patchmark) fail only on this Windows machine because Device Guard blocks their freshly installed astro/tsc shims; running them through bunx passes (astro check 0 errors in both Astro packages, tsc --noEmit 0 errors in patchmark).
• Lint: oxlint reports 0 errors, the ast-grep scan passes, and the SDK docs check reports 0 problems.

No manual desktop/web QA was performed; the verification above covers each propagation step from the agent service through the generated client types to the app adapter.

Visual

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  <title>A custom agent appears in the composer</title>
  <style>
    .picker { opacity: 0; animation: picker 3s ease-in-out infinite; }
    .caret { animation: caret 1.2s steps(2) infinite; }
    @keyframes picker {
      0%, 18% { opacity: 0; transform: translate(4px, 2px); }
      32%, 82% { opacity: 1; transform: translate(0, 0); }
      96%, 100% { opacity: 0; transform: translate(4px, 2px); }
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      0%, 49% { opacity: 1; }
      50%, 100% { opacity: 0.35; }
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      .picker { opacity: 1; animation: none; transform: none; }
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Screenshots / recordings

Not applicable: schema field, core agent flags, and client type propagation. No visual changes.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

Added by the opencode bot (AI-generated).

Related: #57812, #59642, #48810

Public API: adds optional native to Agent.Info, returned by GET /api/agent and in the client AgentInfo type (backwards compatible)