feat: Complete all 10 legal flows, OpenRouter/Gemini integration, and tests
- Switch LLM provider to OpenRouter with Gemini 2.5 Flash as default
- Add 4 trabalhista flows: rescisão indireta, dano moral, acúmulo de
função, contestação trabalhista
- Add 5 cível flows: cobrança, indenização, obrigação de fazer,
contestação cível, contrato (revisão)
- Register all 10 flows in the flow registry
- Write 36 unit tests (sanitize, parse-flow-state, prompt-builder,
url-builder, flow-engine, llm-client)
- Write 24 integration tests (all routes, deep links, step flow)
- All 60 tests passing, all 12 routes verified at runtime
https://claude.ai/code/session_01CvrcMDqfCKWV2hC3xpRbx3
e966049169