Refactor test documentation and improve consistency in comments

Add comprehensive documentation and guidelines for various roles

Add comprehensive tests for cache management, composite indexes, enum fields, and Pinecone integration

fix(tests): graceful skip on LLM unavailability, clear failure in _ensure_session_with_options

test: add integration tests for architecture chat and conversation

fix(db): add FK and time-column indexes (DS-02)

fix(alembic): squash 6 broken migrations into single initial_schema, fix env.py to use settings

feat(05): add quality metrics API endpoint and SRS rubric scores

feat(04): Consistency node + SRS KG + SSE PRD + integration test

feat(04): ConsistencyValidator module with 7 passing tests

feat(04): KGService find_contradictions + state.contradictions + IPC cleanup

test(03): add integration tests covering V-01 through V-10 criteria

feat(03): refactor JudgeGate to accept quality metrics with arbitration hierarchy

feat(03): integrate QualityEngine re-prompt routing into pipeline orchestrator

feat(03): add QualityEngine, DomainTermWhitelist, calibrated budgets, and quality schemas

test(02-kg): add E2E integration tests for KG pipeline

feat(02-kg): implement BookIndexer, book pipeline, and prompt integration

feat(02-kg): implement KG-to-SRS deterministic renderer

feat(02-kg): implement KGService with semantic search and role-scoped isolation

feat(02-kg): implement KG schemas, entity models, and state integration

feat(phase01-p01-06): rebuild orchestrator as clean ~300-line StateGraph

feat(01-01): consolidate SQLAlchemy models into single models.py

updated with new prompts and new workflow to generate a document

Refactor code structure for improved readability and maintainability

Refactor documentation and role structures; update auth and web routers

chore: clean up code structure and remove redundant changes