test: fall back to rm for recursive deletion in proot

[Rely-xcy]

Summary

• fall back to the system rm -rf when JVM recursive deletion fails
• keep the workaround scoped to the test file access provider used by unit tests

This addresses the stable SkillRepositoryTest.safeDeleteSkillDir_deletesOnlySkillDirectories failure in the arm64 Alpine proot environment.

Fixes #8

Summary by CodeRabbit

• Tests
  • Improved test-environment cleanup reliability with platform-appropriate fallback handling for recursive file deletion.
  • Cleanup operations now report failures when the fallback process does not complete successfully.
  • Improved visibility into cleanup problems by preserving process output during fallback operations.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 7fac5ae3-25ef-47f3-9c1c-b6ce3573eaa7

📥 Commits

Reviewing files that changed from the base of the PR and between ef12d0d and a7a7cca.

📒 Files selected for processing (1)

• app/src/test/java/com/aicode/testutil/TestFileAccessProvider.kt

🚧 Files skipped from review as they are similar to previous changes (1)

• app/src/test/java/com/aicode/testutil/TestFileAccessProvider.kt

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📝 Walkthrough

Walkthrough

Changes

The test utility keeps JVM recursive deletion as the first path. If it fails, it runs rmdir on Windows and rm -rf -- elsewhere. The fallback inherits process output and error streams and requires exit code 0.

Test deletion behavior

Layer / File(s)	Summary
Recursive deletion fallback app/src/test/java/com/aicode/testutil/TestFileAccessProvider.kt	deleteRecursively uses an operating-system-specific fallback. Windows uses cmd /c rmdir /s /q; other hosts use rm -rf --. The process inherits stdout and stderr, and cleanup requires a zero exit code.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix · Severity of issue fixed: Medium

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: adding an rm fallback for recursive deletion in proot test environments. It is concise and specific, although it does not mention the Windows-specific fa…
Linked Issues check	✅ Passed	The change satisfies the coding requirements in issue #8. TestFileAccessProvider.deleteRecursively keeps File.deleteRecursively() as the first operation. When it returns false, test code runs `r…
Out of Scope Changes check	✅ Passed	The change stays within issue #8. It modifies the test file access provider to add the requested recursive-deletion fallback and platform handling. It does not change production code or unrelated appl…

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Actionable comments posted: 2

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Inline comments:
In `@app/src/test/java/com/aicode/testutil/TestFileAccessProvider.kt`:
- Line 93: Update the recursive deletion logic around File.deleteRecursively()
and the ProcessBuilder invocation so cleanup does not fail when the Unix rm
command is unavailable. Add a platform-compatible fallback, or explicitly limit
this test utility to Unix hosts while preserving successful recursive deletion
behavior.
- Line 93: Update the ProcessBuilder invocation in the fallback cleanup path to
redirect both output and error streams before starting the process, then wait on
the returned process and preserve the existing exit-code check.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: a74d9d73-787d-4ce9-a5b3-10c9b53ff35e

📥 Commits

Reviewing files that changed from the base of the PR and between 461ef8c and ef12d0d.

📒 Files selected for processing (1)

• app/src/test/java/com/aicode/testutil/TestFileAccessProvider.kt

Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review.

[jieapi]

关于 Issue #8：本环境（arm64 Alpine 3.24 + PRoot，JDK 17）未能复现。

在 main（未含本 PR）跑全量 :app:testUniversalDebugUnitTest：
943 个测试全部通过（failures=0, errors=0），含 safeDeleteSkillDir_deletesOnlySkillDirectories。
JVM 递归删除正常，所述「稳定失败」未出现。