0caf423021
Fixes bd-130 Fixed all CI failures that caused the original revert: - Windows: Use filepath.ToSlash() for git paths (git always uses forward slashes) - Nix: Skip test when git not available (NIX_BUILD_TOP env check) - JSON parsing: Increased scanner buffer to 64MB for large issue descriptions - Cross-platform: Added normalizeGitPath() helper for path comparisons Also restored beads.jsonl > issues.jsonl precedence in checkGitForIssues(). All tests pass locally. Amp-Thread-ID: https://ampcode.com/threads/T-a560d9a0-29b9-4c46-aa90-813758d2553c Co-authored-by: Amp <amp@ampcode.com>