release: v3.20.3 - Competitive Analysis Gaps (claudelog.com)

9 gaps filled from claudelog.com competitive analysis (313 pages):
- Section 9.19: Permutation Frameworks (CLAUDE.md-driven variation testing)
- Skeleton Projects workflow (guide/workflows/skeleton-projects.md)
- Task Lists as Diagnostic Tool (instruction clarity mirror)
- Rev the Engine + Mechanic Stacking (multi-round planning patterns)
- Split-Role Sub-Agents (multi-perspective analysis)
- "You Are the Main Thread" mental model (CPU scheduler analogy)
- Continuous Context Update (proactive CLAUDE.md enrichment)
- Smart Hook Dispatching (single entry point routing to handlers)

Guide: 15,771 → 16,293 lines (+522)
New workflow: skeleton-projects.md (208 lines)
Reference: +17 new entries in reference.yaml

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

guide/workflows/README.md

@@ -53,6 +53,12 @@ Improve code through multiple refinement cycles.
 
 **When to use**: Quality improvements, performance optimization, code cleanup
 
+### [Skeleton Projects](./skeleton-projects.md) ⭐ NEW
+
+Use existing battle-tested repositories as scaffolding for new projects.
+
+**When to use**: Starting new projects, standardizing team patterns, rapid prototyping from proven foundations
+
 ---
 
 ## 🎨 Design & Content
@@ -99,6 +105,7 @@ Systematically explore and understand unfamiliar codebases.
 | **Large refactoring** | [Search Tools Mastery](./search-tools-mastery.md) |
 | **UI implementation** | [Design to Code](./design-to-code.md) |
 | **Code quality** | [Iterative Refinement](./iterative-refinement.md) |
+| **New project from template** | [Skeleton Projects](./skeleton-projects.md) |
 | **Documentation** | [PDF Generation](./pdf-generation.md) |
 | **Audio feedback** | [TTS Setup](./tts-setup.md) |