rdmbair15m5-changelog-20260822-0402-chrome-mcp-fleetwide-setup

Configured Google Chrome MCP (chrome-devtools-mcp v1.7.0) across all agent harnesses (Antigravity CLI, Claude Code, Codex CLI) with pre-edit backups, unprompted subagent permissions, isolated process lifecycle, diagnostic health probing, and 145-test 5-tier E2E verification.

Scope & Target Hosts

• Primary Node: rdmbair15m5 (Apple Silicon M5, macOS 27.0.0)
• Fleet Standard: Applies to all macOS nodes in ~/.agent-coordination/FLEET.md (rdmsm4x, rdmbair13m5, rdmbair15m5, rdmpw3265m, rdmpw3275m).

Files Touched

1. ~/.gemini/config/mcp_config.json: Registered mcpServers.chrome-devtools (command: "npx", args: ["-y", "chrome-devtools-mcp@latest", "--headless", "--isolated", "--no-usage-statistics"]).
2. ~/.claude.json: Non-destructively added mcpServers.chrome-devtools while preserving existing rdworkbench server.
3. ~/.codex/config.toml: Non-destructively added [mcp_servers.chrome-devtools] while preserving node_repl, computer-use, and rdworkbench.
4. /Users/richh/teamwork_projects/chrome_mcp_setup/scripts/register_chrome_mcp.py & .sh: Pre-edit backup creation, non-destructive JSON/TOML mutation, syntax validation (json.tool / tomllib), and rollback mechanics.
5. /Users/richh/teamwork_projects/chrome_mcp_setup/scripts/verify_lifecycle.py & .sh: Subagent permission auditor and process lifecycle teardown tester (EOF, SIGTERM, SIGINT).
6. /Users/richh/teamwork_projects/chrome_mcp_setup/tools/chrome_mcp_health.py: Unified cross-harness diagnostic health probe.
7. /Users/richh/teamwork_projects/chrome_mcp_setup/tests/test_chrome_mcp_suite.py & tests/mcp_test_client.py: 145-test 5-tier E2E test suite.
8. /Users/richh/teamwork_projects/chrome_mcp_setup/reports/health_report.json & reports/health_report.md: Health status reports (HEALTHY, 29 tools discovered, 0 process leaks).

Pre-Edit Backups Created

• /Users/richh/.claude.json.bak-chromemcp-20260822-034550 (59,875 bytes)
• /Users/richh/.codex/config.toml.bak-chromemcp-20260822-034550 (10,108 bytes)

Commands Run & Verification Evidence

• bash scripts/register_chrome_mcp.sh --check: Returned exit code 0; all 3 harnesses verified valid and registered.
• bash scripts/verify_lifecycle.sh: Returned exit code 0; unprompted execution confirmed across Antigravity (always-proceed), Claude Code (bypassPermissions), and Codex CLI (approval_policy = "never"), with 0 leaked processes across EOF, SIGTERM, and SIGINT teardown.
• python3 tools/chrome_mcp_health.py: Discovered 29 tools, executed real DOM navigation, accessibility snapshots, script evaluations, and screenshot capture with 0 process net change. Status: HEALTHY.
• python3 tests/test_chrome_mcp_suite.py: 145/145 tests passed (100.0% pass rate) across all 5 tiers.
• Concurrency testing: Verified up to 10 parallel isolated instances with zero process leaks and private pipe IPC (--remote-debugging-pipe).
• Forensic Integrity Audit: Unanimous CLEAN verdict; zero mocks, zero facades, 100% authentic live execution.

Undo & Rollback Procedure

To rollback configurations to their pre-edit state:

python3 /Users/richh/teamwork_projects/chrome_mcp_setup/scripts/register_chrome_mcp.py --rollback
# OR manually restore backups:
cp -p /Users/richh/.claude.json.bak-chromemcp-20260822-034550 /Users/richh/.claude.json
cp -p /Users/richh/.codex/config.toml.bak-chromemcp-20260822-034550 /Users/richh/.codex/config.toml

Outstanding Owner Actions

• None. Background sync to Apple Notes will be performed automatically by com.rdm.claude-notes-autopublish during the next desktop Aqua GUI session.