Update GOVERNANCE.md

Author: GsCommand

GOVERNANCE.md

@@ -37,10 +37,10 @@ It MUST protect:
 - TXT keys that bind semantic truth (`cl.schema.*`)
 
 ### Commons MUST NOT govern:
-- Pricing or economics  
-- Runtime topology  
-- Execution performance or SLAs  
-- Vendor-specific commercial logic  
+- Pricing or economics
+- Runtime topology
+- Execution performance or SLAs
+- Vendor-specific commercial logic
 
 Commercial and Runtime layers MUST remain **subordinate**:
 
@@ -49,6 +49,10 @@ Commercial and Runtime layers MUST remain **subordinate**:
 
 Commercial schemas may reference Commons semantics — they **may not alter them**.
 
+
+- **SPEC.md is the single source of normative truth.**  
+- Where documents disagree, **SPEC.md SHALL prevail** without exception.
+
 ---
 
 ## 3. Stewardship — Bootstrap to Neutrality
@@ -134,6 +138,12 @@ No single key may modify canonical semantics.
 
 ## 7. Change Classification
 
+**All** normative proposals **MUST** originate from a public GitHub Issue linked to a PR.  
+Silent or undocumented changes are **STRICTLY FORBIDDEN.**
+
+
+
+
 | Change Class | Version Rule | Required Log |
 |--------------|--------------|--------------|
 | **Normative** (behavior change) | `1 → 2` | `RESOLUTION.md` |