chore(conductor): Add new track '4-Tier MMA Architecture Formalization'

conductor/tracks/mma_formalization_20260225/spec.md

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+# Specification: 4-Tier MMA Architecture Formalization
+
+## Overview
+This track aims to formalize and automate the 4-Tier Hierarchical Multi-Model Architecture (MMA) within the Conductor framework. It introduces specialized skills for each tier and a new specialized CLI tool (`mma-exec`) to handle role-specific context gathering and "Context Amnesia" protocols.
+
+## Goals
+- Isolate cognitive load for sub-agents by providing only domain-specific context.
+- Minimize token burn through "Context Amnesia" and AST-based skeleton views.
+- Formalize the Orchestrator (Tier 1), Tech Lead (Tier 2), Worker (Tier 3), and QA (Tier 4) roles.
+
+## Functional Requirements
+
+### 1. Specialized Tier Skills
+Create four new Gemini CLI skills located in `.gemini/skills/`:
+- **mma-tier1-orchestrator:** Focused on product alignment, high-level planning, and track management.
+- **mma-tier2-tech-lead:** Focused on architectural design, tech stack alignment, and code review.
+- **mma-tier3-worker:** Focused on TDD implementation, surgical code changes, and following specific specs.
+- **mma-tier4-qa:** Focused on test analysis, error summarization, and bug reproduction.
+
+### 2. Specialized CLI: `mma-exec`
+A new Python-based CLI tool to replace/extend `run_subagent.ps1`:
+- **Role Scoping:** Automatically determines which project documents (Product, Tech Stack, etc.) to include based on the active role.
+- **AST Skeleton Views:** Integrates with `tree-sitter` to generate and provide only the interface/signature skeletons of dependency files to Tier 3 Workers.
+- **Context Amnesia Protocol:** Ensures each role execution starts with a fresh, scoped context to prevent history-induced hallucinations.
+- **Conductor Integration:** Designed to be called by the Conductor agent or manually by the developer.
+
+### 3. Workflow Integration
+- Update `conductor/workflow.md` to formalize the use of `mma-exec` and the tiered skills.
+- Add specific commands/aliases within the Conductor context to trigger role hand-offs.
+
+## Non-Functional Requirements
+- **Performance:** Context gathering (including AST parsing) must be fast enough for interactive use.
+- **Transparency:** All hand-offs and context inclusions must be logged for developer auditing.
+
+## Acceptance Criteria
+- [ ] Four new skills are registered and accessible.
+- [ ] `mma-exec` tool can successfully spawn a worker with only AST skeleton views of requested dependencies.
+- [ ] A test task can be implemented using the tiered delegation flow without manual context curation.
+- [ ] `workflow.md` documentation is fully updated.
+
+## Out of Scope
+- Migrating existing tracks to the new architecture (only new tasks/tracks are required to use it).
+- Automating the *decision* of when to hand off (remains semi-automated/manual per user preference).