diff --git a/conductor/product.md b/conductor/product.md
index ff2eb9a..ee2f616 100644
--- a/conductor/product.md
+++ b/conductor/product.md
@@ -10,7 +10,13 @@ To serve as an expert-level utility for personal developer use on small projects
 
 ## Key Features
 - **Multi-Provider Integration:** Supports both Gemini and Anthropic with seamless switching.
-- **4-Tier Hierarchical Multi-Model Architecture:** Orchestrates an intelligent cascade of specialized models (Product Manager, Tech Lead, Contributor, QA) to isolate cognitive loads and minimize token burn.
+- **4-Tier Hierarchical Multi-Model Architecture:** Orchestrates an intelligent cascade of specialized models to isolate cognitive loads and minimize token burn.
+  - **Tier 1 (Orchestrator):** Product alignment and high-level strategy using `gemini-3.1-pro-preview`.
+  - **Tier 2 (Tech Lead):** Architectural design and technical planning using `gemini-3-flash-preview`.
+  - **Tier 3 (Worker):** Focused implementation and surgical code changes using `gemini-2.5-flash-lite`.
+  - **Tier 4 (QA):** Bug reproduction, test analysis, and error translation using `gemini-2.5-flash-lite`.
+  - **MMA Delegation Engine:** Utilizes the `mma-exec` CLI and `mma.ps1` helper to route tasks, ensuring each tier receives role-scoped context (e.g., Orchestrators get Product docs; Workers get Workflow specs).
+  - **Role-Scoped Documentation:** Automated mapping of foundational documents to specific tiers to prevent token bloat and maintain high-signal context.
 - **Strict Memory Siloing:** Employs AST-based interface extraction and "Context Amnesia" to provide workers only with the absolute minimum context required, preventing hallucination loops.
 - **Explicit Execution Control:** All AI-generated PowerShell scripts require explicit human confirmation via interactive UI dialogs before execution, supported by a global "Linear Execution Clutch" for deterministic debugging.
 - **Detailed History Management:** Rich discussion history with branching, timestamping, and specific git commit linkage per conversation.
diff --git a/conductor/tech-stack.md b/conductor/tech-stack.md
index 0337357..0cabf24 100644
--- a/conductor/tech-stack.md
+++ b/conductor/tech-stack.md
@@ -19,6 +19,9 @@
 - **google-genai:** For Google Gemini API interaction and explicit context caching.
 - **anthropic:** For Anthropic Claude API interaction, supporting ephemeral prompt caching.
 - **Gemini CLI:** Integrated as a headless backend provider, utilizing a custom subprocess adapter and bridge script for tool execution control.
+- **Gemini 3.1 Pro Preview:** Tier 1 Orchestrator model for complex reasoning.
+- **Gemini 3 Flash Preview:** Tier 2 Tech Lead model for rapid architectural planning.
+- **Gemini 2.5 Flash Lite:** High-performance, low-latency model for Tier 3 Workers and Tier 4 QA.
 
 ## Configuration & Tooling
 
@@ -29,6 +32,7 @@
 - **uv:** An extremely fast Python package and project manager.
 - **pytest:** For unit and integration testing, leveraging custom fixtures for live GUI verification.
 - **ApiHookClient:** A dedicated IPC client for automated GUI interaction and state inspection.
+- **mma-exec / mma.ps1:** Python-based execution engine and PowerShell wrapper for managing the 4-Tier MMA hierarchy and automated documentation mapping.
 
 ## Architectural Patterns