refactor: responsibility-driven component architecture

Rename components to reflect their responsibilities:
- framework_docs.py → knowledge_base.py (KnowledgeBaseComponent)
- modes.py → behavior_modes.py (BehaviorModesComponent)
- agents.py → agent_personas.py (AgentPersonasComponent)
- commands.py → slash_commands.py (SlashCommandsComponent)
- mcp.py → mcp_integration.py (MCPIntegrationComponent)

Each component now clearly documents its responsibility:
- knowledge_base: Framework knowledge initialization
- behavior_modes: Execution mode definitions
- agent_personas: AI agent personality definitions
- slash_commands: CLI command registration
- mcp_integration: External tool integration

Benefits:
- Self-documenting architecture
- Clear responsibility boundaries
- Easy to navigate and extend
- Scalable for future hierarchical organization

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

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

setup/core/installer.py

@@ -149,7 +149,7 @@ class Installer:
 
         # Framework components are ALWAYS updated to latest version
         # These are SuperClaude implementation files, not user configurations
-        framework_components = {'framework_docs', 'agents', 'commands', 'modes', 'core', 'mcp'}
+        framework_components = {'knowledge_base', 'agents', 'commands', 'modes', 'core', 'mcp'}
 
         if component_name in framework_components:
             # Always update framework components to latest version