[Repo Assist] test: add unit tests for PHPCBF.findFiles config-search logic

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🤖 This is an automated draft PR from Repo Assist, an AI assistant.

Summary

Replaces the placeholder "Something 1" test with six meaningful unit tests for PHPCBF.findFiles() — the core method behind the phpcbf.configSearch feature.

Also exports the PHPCBF class from extension.js so it can be imported in the test suite.

Tests Added (test/extension.test.js)

Test	What it checks
finds config file in the same directory	Basic discovery when config sits next to the PHP file
finds config file in a parent directory (walks up)	The walk-up traversal that makes configSearch useful
returns null when no config file exists anywhere	Graceful fallback when nothing is found
returns the first matching file when multiple names given	Priority order of config file name candidates
prefers a closer (deeper) config file over a parent one	Correct scoping in nested projects
does not search above the workspace root	Prevents leaking into OS-level directories

Each test uses a fresh fs.mkdtempSync directory (created in setup, cleaned up in teardown) so tests are isolated and side-effect-free.

Why findFiles is the right target

• It is pure filesystem logic — no VS Code UI or editor state needed, so tests run reliably in the extension host
• It is non-trivial (path walking with multiple filename candidates, parent-stop boundary) and lacked any test coverage
• Bugs here would silently break phpcbf.configSearch for all users

Test Status

These tests require the VS Code extension host (vscode/lib/testrunner) to run. The findFiles logic itself was manually verified with Node.js to confirm all six assertions hold before opening this PR. Infrastructure (no VS Code in CI) prevents automated test execution.

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[github-actions]

🤖 This is an automated comment from Repo Assist.

This PR has a merge conflict (mergeable_state: dirty) with master that cannot be automatically resolved because the branch diverged when PR #66 was merged.

The tests in this PR target test/extension.test.js (VS Code extension host runner), which can't execute in CI without a full VS Code instance.

Recommendation: close this PR. The underlying functionality is better covered by:

• PR [Repo Assist] test: add edge case tests for findFiles utility #76 — adds 3 edge-case unit tests for findFiles to test/unit.test.js (these actually run in CI via npm run test:unit)
• PR [Repo Assist] test: extract expandHomedir & resolveVars utilities and add unit tests #87 — extracts and unit-tests the expandHomedir / resolveVars path utilities

If a maintainer wants to preserve the exports.PHPCBF = PHPCBF export, that can be added as a separate small PR.

Generated by Repo Assist · ◷

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gh aw add githubnext/agentics/workflows/repo-assist.md@346204513ecfa08b81566450d7d599556807389f