fix(auth): align SchemaShape type with sveltekit-superforms to resolve pnpm check errors

[KATO-Hiro]

close #3702

Summary by CodeRabbit

リリースノート

• Refactor
  • 認証フォームの内部型構造を最適化し、フォーム処理の一貫性を向上させました。

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 28fac1b2-d5bb-4c16-b138-e550cb2d7eeb

📥 Commits

Reviewing files that changed from the base of the PR and between abac128 and ed8d469.

📒 Files selected for processing (1)

• src/test/lib/utils/auth_forms.test.ts

📝 Walkthrough

Walkthrough

SchemaShape 型エイリアスを Record<string, unknown> から再帰的 index-signature 型 { [K in string]: SchemaShape } に変更し、sveltekit-superforms の型と整合させた。合わせて、基底フォームの username/password shape ノードを { type: 'string' } から {} に変更。

Changes

SchemaShape 型互換修正

Layer / File(s)	Summary
SchemaShape 型定義と shape ノード修正 src/lib/types/auth_forms.ts, src/lib/utils/auth_forms.ts	SchemaShape を再帰的 index-signature 型に変更（循環参照エラー回避のコメント付き）。username/password の shape ノードを { type: 'string' } から {} に統一し、schemaShape の説明コメントを追加。

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• AtCoder-NoviSteps/AtCoderNoviSteps#2453: 同じく auth_forms.ts のスキーマ/shape ロジックを修正しており、"No shape could be created for schema" 問題への対処として直接関連する。

Poem

🔄 型の迷宮、ぐるりと回る
Record では循環が邪魔をして
再帰の index-signature、すっきり解決
{} でノードを静かに空にして
pnpm check よ、もう怒らないで 🎉

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	タイトルはSchemaShape型のsveltekit-superformsへの整合化とpnpmチェックエラー解決という、変更セットの主要な目的を明確に要約しています。
Linked Issues check	✅ Passed	PR は#3702で指摘されたpnpmチェック失敗の根本原因（SchemaShape型の不整合）を解決し、反復的な失敗を防ぐという目標を達成しています。
Out of Scope Changes check	✅ Passed	すべての変更（型定義の整合化とshape定義の修正）は、pnpmチェックエラー解決という#3702の目標に直結しており、スコープ外の変更はありません。
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch #3702

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/lib/utils/auth_forms.ts`:
- Around line 167-171: The test expectations in auth_forms.test.ts (around lines
203-211) still expect the old shape format with { type: 'string' } for primitive
fields, but the code in auth_forms.ts has been updated to use empty objects {}
for primitive shape nodes (username and password). Update the test expectations
in auth_forms.test.ts to match the new specification by replacing { type:
'string' } with {} for all primitive field assertions to align with the updated
shape definition.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: 63a60071-10f3-4c41-aace-80368a582ec1

📥 Commits

Reviewing files that changed from the base of the PR and between d58af37 and abac128.

📒 Files selected for processing (2)

• src/lib/types/auth_forms.ts
• src/lib/utils/auth_forms.ts

[KATO-Hiro]

LGTM