fix(kimi-code): format IPv6 server origins correctly

[VectorPeak]

Related Issue

No linked issue; this is a focused, reproducible CLI server URL formatting bug fix.

Problem

serverOrigin(host, port) builds the shared server origin used by multiple kimi server subcommands. It currently interpolates the host directly into a URL string:

`http://${host}:${port}`

That works for IPv4 addresses and hostnames, but it produces an invalid URL for IPv6 literal hosts. IPv6 addresses contain : characters, so a raw value such as ::1 conflicts with the URL's host:port separator:

serverOrigin('::1', 58627)
// before: http://::1:58627
// expected: http://[::1]:58627

This is not just a display issue. serverOrigin() is shared by server lifecycle, daemon, status, kill, and health-check paths, so a malformed origin can be passed into new URL(...) / fetch-style call sites that require bracketed IPv6 host literals.

The behavior should match URL syntax and the existing server access URL formatter: IPv6 literal hosts must be wrapped in brackets, while IPv4 addresses and hostnames should remain unchanged.

What changed

• Updated serverOrigin() to format IPv6 hosts with the existing formatHostForUrl() helper.
• Preserved already-bracketed IPv6 hosts so they are not double-wrapped.
• Preserved IPv4 and hostname output unchanged.
• Added focused tests for raw IPv6, already-bracketed IPv6, and IPv4 server origins.
• Added a patch changeset for @moonshot-ai/kimi-code.

Validation run locally:

node -e "for (const u of ['http://::1:58627','http://[::1]:58627']) { try { console.log(u + ' -> ' + new URL(u).href) } catch (e) { console.log(u + ' -> ' + e.name + ': ' + e.message) } }"
corepack pnpm --filter @moonshot-ai/kimi-code exec vitest run test/cli/server/server.test.ts -t "wraps IPv6 hosts when formatting server origins"
corepack pnpm --filter @moonshot-ai/kimi-code exec vitest run test/cli/server/server.test.ts
git diff --check

Observed URL-construction proof:

http://::1:58627 -> TypeError: Invalid URL
http://[::1]:58627 -> http://[::1]:58627/

Note: local validation used ELECTRON_SKIP_BINARY_DOWNLOAD=1 / ELECTRON_SKIP_DOWNLOAD=1; this parser/URL formatting test path does not require the Electron binary.

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]

🦋 Changeset detected

Latest commit: 2b1236a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@moonshot-ai/kimi-code	Patch

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