WIP: stage all uncommitted work — sprints 46-221, graduation headers, specialist fleet, test steps 909-1988

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sprint107_plan.md

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+# Sprint 107 Plan: Safety-Critical Deployment Profiles
+
+## Context
+
+Some environments demand stricter deployment profiles than general stable tiers.
+Sprint 107 introduces safety-critical deployment profiles and evidence requirements.
+
+---
+
+## Goals
+
+1. Define safety-critical deployment profiles with stricter gates
+2. Require enhanced evidence and reviewer quorum for promotion
+3. Add traceable hazard/risk linkage to migration decisions
+4. Support safe downgrade pathways when profiles cannot be met
+
+---
+
+## Steps
+
+### Step 1299: Safety-critical profile schema (`silver`, `gold`, `platinum`) (12 tests)
+### Step 1300: Enhanced evidence requirements engine (10 tests)
+### Step 1301: Reviewer quorum policy model for critical approvals (10 tests)
+### Step 1302: Hazard-to-evidence linkage validator (10 tests)
+### Step 1303: Profile compliance auditor integration (10 tests)
+### Step 1304: Safe downgrade workflow model (8 tests)
+### Step 1305: `whetstone_get_safety_profile_requirements` MCP tool (8 tests)
+### Step 1306: `whetstone_verify_safety_profile_compliance` MCP tool (8 tests)
+### Step 1307: Safety-critical deployment dossier artifact (8 tests)
+### Step 1308: Sprint 107 integration summary + regression (8 tests)
+
+---
+
+## Safety Rule
+
+- Safety-critical promotions require quorum and complete profile evidence.