Line 52: .claude/agents/playwright-test-reviewer.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.808Z [ERROR] .claude/agents/playwright-test-reviewer.md: custom agent markdown frontmatter is malfor...)

Line 47: .claude/agents/playwright-test-planner.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.808Z [ERROR] .claude/agents/playwright-test-planner.md: custom agent markdown frontmatter is malform...)

Line 42: .claude/agents/playwright-test-healer.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.808Z [ERROR] .claude/agents/playwright-test-healer.md: custom agent markdown frontmatter is malforme...)

Line 37: .claude/agents/playwright-test-generator.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.808Z [ERROR] .claude/agents/playwright-test-generator.md: custom agent markdown frontmatter is malfo...)

Line 32: .claude/agents/playwright-e2e-pr-updater.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.807Z [ERROR] .claude/agents/playwright-e2e-pr-updater.md: custom agent markdown frontmatter is malfo...)

Line 27: .claude/agents/docs-update-writer.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.807Z [ERROR] .claude/agents/docs-update-writer.md: custom agent markdown frontmatter is malformed: f...)

Line 22: .claude/agents/docs-update-reviewer.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.807Z [ERROR] .claude/agents/docs-update-reviewer.md: custom agent markdown frontmatter is malformed:...)

Line 17: .claude/agents/docs-update-planner.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.807Z [ERROR] .claude/agents/docs-update-planner.md: custom agent markdown frontmatter is malformed: ...)

Line 12: .claude/agents/docs-screenshot-capturer.md: custom agent markdown frontmatter is malformed: failed to parse YAML frontmatter: Nested mappings are not allowed in compact mappings at line 2, column 14: (Pattern: Copilot CLI timestamped ERROR messages, Raw log: 2026-03-06T00:50:00.807Z [ERROR] .claude/agents/docs-screenshot-capturer.md: custom agent markdown frontmatter is malfor...)

Line 89: spawn gt ENOENT (Pattern: Generic ERROR messages, Raw log: 2026-03-06T00:50:00.851Z [ERROR] Failed to start MCP client for graphite: Error: spawn gt ENOENT)