docs(mux-loop): add multi-agent architecture consensus & review reports for CLI redesign

.agents/reports/reviewer-cline-01/report-eb53c7f8.md

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+# 📋 Review & Verdict on Grok's Critique and Updated Consensus (Job eb53c7f8)
+
+- **Reviewer**: reviewer-cline-01
+- **Job ID**: eb53c7f8
+- **Role**: Reviewer
+- **Target**: Review of Grok's 5 Critiques + Updated Architecture Consensus
+
+---
+
+## 1. Executive Summary & Verdict
+- **Verdict**: **STRONGLY ENDORSED (100% PASS)**
+- **Rationale**: Grok's critique was exceptionally sharp and caught a fatal bug in the preliminary checklist (parser variable collapse) along with 5 vital specification clarifications. The updated consensus specification (Rev.3) incorporates all these corrections.
+
+---
+
+## 2. Reviewer Detailed Evaluation of Grok's Points
+
+1. **Parser Variable Separation (CREATOR_OPT vs TARGET_AGENT_OPT)**:
+   - **Status**: Verified and fixed in Rev.3 specification. Separate parser branches enable true fail-fast on mismatch.
+
+2. **Skipping resolve_planner_session() on Explicit --planner**:
+   - **Status**: Verified and adopted. Prevents unnecessary queries and ensures deterministic session binding.
+
+3. **2-Branch Session Validation**:
+   - **Status**: Verified and adopted. Distinguishes 'is not registered' from 'is not running (status: ...)'.
+
+4. **Composite Role Substring Matching**:
+   - **Status**: Verified and adopted. Allows composite roles such as 'planner,reviewer'.
+
+5. **Test Scope & Document Extension**:
+   - **Status**: Verified and adopted. Separates pre-freeze exit 1 tests into lightweight unit tests, and adds deploy/INSTALL.md to documentation updates.
+
+[VERDICT: PASS]