fix: write .claude.json to ~/.claude/ instead of homedir root

[p2p3p]

将 .claude.json 写入路径从 homedir() 根目录改为 getClaudeConfigHomeDir() 对应的 ~/.claude/ 目录。

Summary by CodeRabbit

• Bug Fixes
  • Improved configuration file discovery by respecting the configured Claude settings directory.
  • Preserved support for custom configuration directory overrides.

[coderabbitai]

📝 Walkthrough

Walkthrough

getGlobalClaudeFile now uses getClaudeConfigHomeDir() when CLAUDE_CONFIG_DIR is not set. The override and filename construction remain unchanged.

Changes

Configuration directory resolution

Layer / File(s)	Summary
Global Claude file path resolution src/utils/env.ts	getGlobalClaudeFile retains the CLAUDE_CONFIG_DIR override and uses getClaudeConfigHomeDir() as the fallback directory.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• claude-code-best/claude-code#1335: Makes the same getGlobalClaudeFile fallback change.

🚥 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	The title clearly and concisely describes the change to write .claude.json under ~/.claude/.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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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/utils/env.ts`:
- Around line 25-28: Update getClaudeConfigHomeDir in envUtils.ts to treat an
empty CLAUDE_CONFIG_DIR as unset, while preserving its existing
configured-directory behavior; then update the path construction in the shown
utility to use getClaudeConfigHomeDir as the sole source of the base directory.
Add a regression test covering CLAUDE_CONFIG_DIR="" and verify the resulting
path remains under the default Claude configuration directory rather than
becoming relative.

🪄 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: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 8958d2b0-d4bd-477e-8b9c-a0330c4e3495

📥 Commits

Reviewing files that changed from the base of the PR and between 2ccc216 and c72b7f5.

📒 Files selected for processing (1)

• src/utils/env.ts