refactor: implement proper middleware architecture (SPEC-21)

fix(tests): Address CodeRabbit review feedback

fix(orchestrator): P2 - Silence ExecutorCompletedEvent UI noise

style: Address CodeRabbit nitpicks

refactor(orchestrator): implement semantic progress tracking

fix(deps): SPEC-18 Agent Framework Core Upgrade to 1.0.0b251204 (#131)

refactor(orchestrator): Introduce WorkflowState dataclass (Priority 7) (#129)

refactor(orchestrator): DRY synthesis + constants + clean imports

fix(orchestrator): Force synthesis when ReportAgent doesn't run (P1)

fix(p2): Resolve duplicate report content and first-turn timeout bugs (#123)

fix(arch): End-to-end BYOK support for unified architecture

fix(P1): Replace stale 72B model fallbacks with 7B to avoid Novita 500 errors

fix(P0): Implement Accumulator Pattern to resolve Repr Bug (#117)

fix: Address CodeRabbit review feedback

fix(P0): Add function invoking marker and improve ChatMessage extraction

fix(P1): Switch from Llama-3.1-70B to Qwen2.5-72B for HuggingFace free tier

feat(SPEC-16): Unified Chat Client Architecture (#115)

fix: Address all CodeRabbit review nitpicks

fix(advanced): P2 dead zones granular init events

chore: Address CodeRabbit review feedback

fix: P1 Advanced Mode chain-of-thought interpretability (#106)

docs: Clarify config parameter behavior in factory.py

fix: P0 Advanced Mode timeout synthesis + CodeRabbit recommendations

feat: Implement Free Tier synthesis using HuggingFace Inference

fix: P0 provider mismatch and code quality audit fixes (#102)

feat: SPEC_15 Advanced Mode Performance Optimization (#101)

fix: use logger.error with stack trace for synthesis failures (CodeRabbit)

feat(ui): force dark mode for api key input and enhance synthesis error handling

fix(SPEC_11): address CodeRabbit review feedback (#92)

feat(SPEC_11): finalize transition to Sexual Health Research Specialist

feat: SPEC_10 - Domain-Agnostic Refactor + License Fix (#87)

feat: Wire LlamaIndex RAG into Simple Mode (Tiered Embedding) (#83)

feat(SPEC-08): Integrate shared memory layer + CodeRabbit fixes (#74)

feat: Enhance research workflow with embedding service integration

feat: Integrate LangGraph for enhanced research orchestration

fix(P0): Implement SPEC_06 - Simple Mode Synthesis Fix (#71)

feat: add service loader + SPEC_06 + P0 bug report

fix: Address audit findings in orchestrators package

refactor: Organize orchestrators into dedicated package