feat(install): add claude-code context preset for Serena MCP

feat(install): update MCP servers and track .mcp.json in git

Sprint Runner with Reflection Loop (#5)

fix(orchestrator): remove redundant index refresh before fix pass

fix(orchestrator): use cly-clean alias in handoff session

fix(orchestrator): suggest orch-clean instead of /cleanup in handoff session

feat(orchestrator): add interactive handoff session after implement phase

refactor(orchestrator): remove all Ralph naming references

refactor(orchestrator): replace build loop with single /implement_plan call

fix(install): use .mcp.json instead of .claude.json for MCP servers

feat(install): always overwrite .claude.json on install

feat(install): include Playwright MCP server in default .claude.json

feat(install): create skeleton .claude.json for MCP server config

docs(cleanup): add Parnas & Clements paper reference as comment

feat(cleanup): add doc rewrite step to present final state as intended design