fix: avoid runtime check rpc

[7Sageer]

Related Issue

No linked issue; follow-up to #430.

Problem

The Windows Git Bash preflight merged in #430 added a dedicated checkRuntimeEnvironment method through CoreAPI, the SDK RPC client, and KimiHarness. That made the fix wider than necessary because the shell runtime is already a core session dependency.

What changed

Removed the dedicated runtime-check RPC and harness method, and stopped calling it from CLI startup. The Git Bash failure still surfaces from core when creating or resuming a session through the lazy Kaos initialization path. Added core regression coverage for create and resume failures, and adjusted CLI tests so they no longer mock the removed API.

Checklist

• I have read the CONTRIBUTING document.
• I have linked a related issue, or explained the problem above.
• I have added tests that prove my feature works.
• Ran gen-changesets skill, or this PR needs no changeset.
• Ran gen-docs skill, or this PR needs no doc update.

[changeset-bot]

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Latest commit: b7ffda0

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[pkg-pr-new]

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commit: b7ffda0

[chatgpt-codex-connector]

💡 Codex Review

kimi-code/packages/agent-core/src/rpc/core-impl.ts

Lines 191 to 194 in 03324ff

	const summary = await this.sessionStore.create({
	id,
	workDir,
	});

Check runtime before persisting new sessions

When Git Bash is missing on Windows, the new startup path relies on createSession() to surface the Kaos failure, but this call has already created and indexed the session directory before getKaos() runs below. That leaves a failed, empty session in listSessions()/kimi -c results and can later be selected/resumed even though startup never succeeded; move the Kaos/runtime check before sessionStore.create() or roll the store entry back on this failure.

---

kimi-code/apps/kimi-code/src/cli/run-prompt.ts

Lines 280 to 281 in 03324ff

	resumed: true,
	restorePermission,

Surface missing Git Bash before model validation

For a fresh headless prompt on Windows with Git Bash missing and no configured model, startup now reaches requireConfiguredModel() before it ever calls into createSession(), so the user gets the “No model configured” error instead of the Git Bash preflight error and cannot follow the suggested kimi login flow until the shell runtime is fixed. If the runtime check is going to live on session creation, this path still needs to probe it before model validation or otherwise preserve the preflight behavior for first-run users.

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