fix(acp): normalize file change path expectation on macOS

[AsperforMias]

Summary

• Canonicalize ACP file change paths so macOS and Linux report the same canonical path.
• Update the ACP file system test to assert against the canonical path and ignore unrelated extra fields.

Validation

• bun test tests/acp-file-system.test.ts
• bun test tests/acp-*.test.ts
• bun test tests

Closes #93

[Copilot]

🟡 Not ready to approve

Canonicalization misses final-component symlinks, and the required sourceEventId validation was removed.

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Pull request overview

Canonicalizes ACP file-change paths across macOS and Linux and updates related assertions.

Changes:

• Resolves writable paths to canonical locations.
• Uses partial event matching while preserving event-count validation.

File summaries

File	Description
src/runtimes/acp/acp-file-system.ts	Canonicalizes written and reported paths.
tests/acp-file-system.test.ts	Updates cross-platform path expectations.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 2
• Review effort level: Balanced

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[Copilot]

🟢 Ready to approve

The focused portability fix satisfies the issue’s acceptance criteria without changing production behavior.

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Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0 new
• Review effort level: Balanced

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[AsperforMias]

@Yevanchen needs help for running CI

[Copilot]

🟡 Not ready to approve

The revised process test no longer exercises the force-kill fallback because the descendant accepts SIGTERM.

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Review details

Suppressed comments (1)

tests/openai-app-server-client.test.ts:966

• The descendant no longer ignores SIGTERM, so stop() can take the early return after graceful termination (app-server-client.ts:634-645) and this test no longer exercises the advertised force-SIGKILL fallback. Keep a SIGTERM listener installed so the descendant remains alive until the force-kill path, then retain the new PID-exit assertion to verify that fallback actually removed it.

writeFileSync(${JSON.stringify(descendantReadyPath)}, "ready");
setInterval(() => {}, 1000);

• Files reviewed: 2/2 changed files
• Comments generated: 0 new
• Review effort level: Balanced

We're testing this review assessment. Please use 👍 or 👎 to tell us if it's correct.