fix(hooks): use path.isAbsolute() for cross-platform path detection on Windows

[MoerAI]

Summary

• Replace path.startsWith('/') with path.isAbsolute() in directory injector hooks for proper Windows path support

Problem

resolveFilePath() in both directory-agents-injector and directory-readme-injector uses path.startsWith('/') to detect absolute paths. This only works on Unix-like systems where absolute paths begin with /.

On Windows, absolute paths start with drive letters (e.g., C:\Users\...), so the check fails and the function incorrectly treats them as relative paths, prepending ctx.directory.

Fix

Use Node.js built-in path.isAbsolute() which correctly handles both Unix (/path) and Windows (C:\path, \server\share) absolute path formats.

This follows the same pattern already used in src/features/claude-tasks/storage.ts (commit 8e349aa).

Changes (2 files)

File	Change
src/hooks/directory-agents-injector/index.ts	path.startsWith('/') → isAbsolute(path)
src/hooks/directory-readme-injector/index.ts	path.startsWith('/') → isAbsolute(path)

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Summary by cubic

Use Node’s path.isAbsolute() in the directory-agents-injector and directory-readme-injector finders to correctly detect absolute paths on all platforms, fixing Windows path resolution for AGENTS.md and README.md injection.

• Bug Fixes
  • Windows absolute paths (e.g., C:..., \server\share) are no longer treated as relative or prefixed with the project directory.

^{Written for commit c298351. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

[MoerAI]

Rebased onto latest dev. After rebase, the fix targets finder.ts instead of index.ts since resolveFilePath() was refactored into separate files upstream.

Updated changes:

File	Change
src/hooks/directory-agents-injector/finder.ts	path.startsWith('/') → isAbsolute(path)
src/hooks/directory-readme-injector/finder.ts	path.startsWith('/') → isAbsolute(path)