refactor: consolidate workflow documentation into unified architecture

- Create unified workflow-architecture.md combining:
  - data-model.md (JSON-only architecture, task schemas)
  - file-structure-standards.md (progressive structures, templates)
  - session-management-principles.md (marker files, session ops)
  - complexity-rules.md (classification thresholds, behaviors)

- Update 11 files with references to new consolidated document
- Remove redundant documentation while preserving all functionality
- Streamline maintenance with single source of truth

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

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

.claude/commands/workflow/execute.md

@@ -14,7 +14,7 @@ Coordinates multiple agents for executing existing workflow tasks through automa
 
 ## Core Principles
   
-**Session Management:** @~/.claude/workflows/session-management-principles.md
+**Session Management:** @~/.claude/workflows/workflow-architecture.md
 **Agent Orchestration:** @~/.claude/workflows/agent-orchestration-patterns.md
 
 ## Execution Philosophy

.claude/commands/workflow/plan.md

@@ -16,7 +16,7 @@ examples:
 Creates actionable implementation plans with intelligent input source detection. Supports text, files, issues, and templates through automatic recognition.
 
 ## Core Principles
-**File Structure:** @~/.claude/workflows/file-structure-standards.md
+**File Structure:** @~/.claude/workflows/workflow-architecture.md
 
 ## Usage
 ```bash

.claude/commands/workflow/review.md

@@ -13,7 +13,7 @@ examples:
 Final phase for quality validation, testing, and completion.
 
 ## Core Principles
-**Session Management:** @~/.claude/workflows/session-management-principles.md
+**Session Management:** @~/.claude/workflows/workflow-architecture.md
 
 ## Review Process