Phase 5: Add immutable file headers to all protected files

Added protection headers to 9 critical files:

JSON Files (x-immutable-notice field):
- .dss/schema/api.schema.json
- .dss/schema/tokens.schema.json
- .dss/schema/components.schema.json
- .dss/schema/workflows.schema.json
- .dss/schema/guardrails.schema.json
- dss-claude-plugin/.mcp.json

YAML File (comment header):
- .dss-boundaries.yaml

Markdown File (HTML comment):
- API_SPECIFICATION_IMMUTABLE.md

Python File (docstring header):
- dss-mvp1/dss/validators/schema.py

Each header includes:
- Protection notice
- Reason for immutability
- Last modified date
- Bypass instructions (DSS_IMMUTABLE_BYPASS=1)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docs/DSS_CODING_PRINCIPLES.md

@@ -12,7 +12,7 @@ Comprehensive principles for building the Design System Server (DSS) - a living,
 
 1. [Architectural Principles](#1-architectural-principles)
 2. [Code Quality Standards](#2-code-quality-standards)
-3. [Organism Framework Principles](#3-component-framework-principles)
+3. [Component Framework Principles](#3-component-framework-principles)
 4. [Keyboard Accessibility](#4-keyboard-accessibility)
 5. [Web Component Standards](#5-web-component-standards)
 6. [Security Guidelines](#6-security-guidelines)
@@ -280,7 +280,7 @@ class Result:
 
 ---
 
-## 3. Organism Framework Principles
+## 3. Component Framework Principles
 
 DSS is a **living component** with organ systems. Understand and design for these systems.
 
@@ -894,7 +894,7 @@ class MyComponent extends HTMLElement {
 
 ---
 
-## 11. Logging with Organism Awareness
+## 11. Logging with Component Awareness
 
 Use structured logging that helps understand system state and consciousness.
 
@@ -910,7 +910,7 @@ Use structured logging that helps understand system state and consciousness.
 
 - **Log Levels**
   - `DEBUG` - Deep thought, internal analysis
-  - `INFO` - Organism awareness, normal operations
+  - `INFO` - Component awareness, normal operations
   - `WARN` - Symptom detection, unusual conditions
   - `ERROR` - Immune alert, critical threats