release: v3.23.4 - Agent Anti-Patterns & Scope-Focused Refactoring

Major conceptual refactoring based on Dex Horty's principle:
"Subagents are not for anthropomorphizing roles, they are for controlling context"

### Added (1 new section)
- Agent Anti-Patterns section (§9.17, line 3662)
  - Wrong vs Right table (anthropomorphizing vs context control)
  - When to use agents (context isolation, parallel processing, scope limitation)
  - When NOT to use agents (fake teams, roleplaying, mimicking org structure)

### Changed (18 files, 200+ lines)
- Section rename: "Split-Role Sub-Agents" → "Scope-Focused Agents"
- Agent definitions: "Specialized role" → "Context isolation tool"
- 8 custom agent examples refactored (guide + examples/agents/)
- 10+ prompt examples with explicit scope boundaries
- 4 workflow files updated (agent-teams, TDD, iterative refinement)
- Terminology replacements:
  * "Specialized agents" → "Scope-focused agents"
  * "Expert personas" → "Context boundaries"
  * "Multi-domain expertise" → "Multi-scope analysis"

### Fixed
- Methodologies: Clarification note for BMAD role-based naming

Breaking change: Conceptual shift from role-based to scope-based agent usage.
All examples now demonstrate context isolation instead of persona simulation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

guide/workflows/agent-teams.md

@@ -295,12 +295,12 @@ claude --session infra-setup
 
 **Organization**: Fountain (frontline workforce management platform)
 **Challenge**: Comprehensive codebase review across multiple concerns (security, API design, frontend)
-**Solution**: Deployed hierarchical multi-agent orchestration with specialized sub-agents
+**Solution**: Deployed hierarchical multi-agent orchestration with scope-focused sub-agents
 
-**Agent assignment**:
-- **Agent 1 (Security)**: Scan for vulnerabilities, auth issues, data exposure
-- **Agent 2 (API)**: Review endpoint design, request/response validation, error handling
-- **Agent 3 (Frontend)**: Check UI patterns, accessibility, performance
+**Agent scopes** (Fountain's approach):
+- **Scope 1 (Security)**: Scan for vulnerabilities, auth issues, data exposure
+- **Scope 2 (API)**: Review endpoint design, request/response validation, error handling
+- **Scope 3 (Frontend)**: Check UI patterns, accessibility, performance
 
 **Results**:
 - ✅ **50% faster** candidate screening
@@ -314,10 +314,10 @@ claude --session infra-setup
 
 **Example prompt** (team lead):
 ```
-Review this PR comprehensively:
-- Security agent: Check for vulnerabilities and auth issues
-- API agent: Review endpoint design and error handling
-- Frontend agent: Check UI patterns and accessibility
+Review this PR comprehensively with scope-focused analysis:
+- Security Scope: Check for vulnerabilities and auth issues (context: auth code, input validation)
+- API Design Scope: Review endpoint design and error handling (context: API routes, controllers)
+- Frontend Scope: Check UI patterns and accessibility (context: components, styles)
 
 PR: https://github.com/company/repo/pull/123
 ```

guide/workflows/iterative-refinement.md

@@ -370,7 +370,7 @@ Specialized iterative pattern for code review where Claude reviews → fixes →
 
 ```
 Review this PR with auto-correction:
-1. Multi-agent review (3 specialized agents)
+1. Multi-agent review (3 scope-focused agents)
 2. Fix all 🔴 Must Fix issues
 3. Re-review to verify fixes didn't introduce new issues
 4. Fix all 🟡 Should Fix issues

guide/workflows/tdd-with-claude.md

@@ -183,7 +183,7 @@ post_edit:
 
 ### With Sub-Agents
 
-Delegate test writing to specialized agent:
+Delegate test writing to scope-focused agent:
 
 ```
 Use the test-writer agent to create comprehensive tests for