Add Zod validation to server actions and API chat route; replace root interfaces with Zod schemas

[Copilot]

app/actions/ server action parameters and the app/api/chat/ POST body lacked runtime validation. Types like MarkdownSection, ReplCommand, etc. were defined as bare interfaces, requiring a separate schema to validate — so the types themselves are rewritten as Zod schemas with z.output<typeof schema>.

Type definitions replaced with Zod schemas

• app/lib/docs.ts — interface PagePath → PagePathSchema, interface MarkdownSection → MarkdownSectionSchema. Also adds ReplacedRangeSchema and DynamicMarkdownSectionSchema (consolidated here from client files to make schemas server-importable).
• packages/runtime/src/interface.ts — ReplOutputType, ReplOutput, UpdatedFile, ReplCommand interfaces all replaced with Zod schemas + z.output<> types. Added zod to the package's deps.
• app/markdown/multiHighlight.tsx / pageContent.tsx — local interface ReplacedRange / interface DynamicMarkdownSection removed; re-export the types from @/lib/docs.

// Before
export interface MarkdownSection { file: string; id: SectionId; ... }

// After
export const MarkdownSectionSchema = z.object({
  file: z.string(),
  id: z.string().transform((s) => s as SectionId),
  ...
});
export type MarkdownSection = z.output<typeof MarkdownSectionSchema>;

Validation added

• app/api/chat/route.ts — type ChatParams replaced by ChatParamsSchema (composed from all sub-schemas above); POST body is now validated via safeParse, returning HTTP 400 on invalid input.
• app/actions/deleteChat.ts / app/actions/getRedirectFromChat.ts — chatId parameter validated with z.string().uuid() before use.

Warning

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I tried to connect to the following addresses, but was blocked by firewall rules:

• workers.cloudflare.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node node_modules/.bin/next lint (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	my-code	f759e87	Commit Preview URL Branch Preview URL	Mar 19 2026, 02:16 PM

[na-trium-144]

@copilot

  const parsed = chatIdSchema.safeParse(chatId);
  if (!parsed.success) {
    throw new Error(parsed.error.issues.map((e) => e.message).join(", "));
  }

これは const parsed = chatIdSchema.parse(chatId); (エラー時にはZodErrorがthrowされる) と書いた方がシンプルだと思ったのですが、何が違う?

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

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If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: b3a0cf5f-611a-4591-a903-2e07980acf6b

[Copilot]

@na-trium-144 The model claude-sonnet-4.6 is not available for your account. This can happen if the model was disabled by your organization's policy or if your Copilot plan doesn't include access to it.

You can try again without specifying a model (just @copilot) to use the default, or choose a different model from the model picker.

If you want to contact GitHub about this error, please mention the following identifier so they can better serve you: 078caba8-8e39-400c-8e51-87bb82c37e7b

[na-trium-144]

@copilot

  const parsed = chatIdSchema.safeParse(chatId);
  if (!parsed.success) {
    throw new Error(parsed.error.issues.map((e) => e.message).join(", "));
  }

これは const parsed = chatIdSchema.parse(chatId); (エラー時にはZodErrorがthrowされる) と書いた方がシンプルだと思ったのですが、何が違う?

[Copilot]

@copilot

  const parsed = chatIdSchema.safeParse(chatId);

...

違いは主に2点です。parse は失敗時に ZodError をそのまま throw し、safeParse は { success: false, error } を返すので、こちらで Error(message) 形式に整形して投げられます。今回の実装では呼び出し側へ返る例外メッセージ形式を明示的にそろえるために safeParse + 手動 throw を使っています。

@copilot

...

おっしゃる通り、シンプルさだけなら parse で書けます。違いは、parse だと ZodError がそのまま伝播し、safeParse だと失敗時の文言・形式をこちらで統一できる点です。ここでは throw new Error(issues.join(", ")) にして呼び出し側へ返るメッセージを一定にする意図で safeParse を選んでいます。

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• workers.cloudflare.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node node_modules/.bin/next lint (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)