[1] MCP initialize handshake + serverInfo
PASS: handshake ok: serverInfo: {"name": "codegraph", "version": "1.6.0"}
[2] tools/list enumerates the default single-tool surface
PASS: , includes codegraph_explore (single-tool default per README)
[3] tools/call codegraph_explore positive: real call chain from the indexed fixture
PASS: explore over MCP returns the route->service->db chain (23 lines)
[4] tools/call negative: projectPath with no index returns guidance, not an error dump
PASS: unindexed path -> guidance text, exit 0
[5] CODEGRAPH_MCP_TOOLS re-enables the hidden tool surface
PASS: env var expands the tool list: 
[6] Hermes Agent wiring (isolated HERMES_HOME): install --target=hermes
PASS: config.yaml gains mcp_servers.codegraph AND platform_toolsets mcp-codegraph entry
[7] pre-existing Hermes config is preserved (upsert, not clobber)
PASS: model, other MCP server, and codegraph block coexist
[8] Hermes uninstall removes exactly the codegraph entries
PASS: codegraph entries removed, other config intact
[9] --print-config hermes is non-destructive
PASS: print-config renders the snippet without writing files
[10] version alignment: installed bundle vs npm registry latest
PASS: npm latest 1.6.0 == installed 1.6.0 == GitHub tag v1.6.0