🔧 chore(spec): add spec workflow management system

- Add comprehensive template system for specification documents
- Include templates for requirements, design, tasks, and steering documents
- Support custom user templates with override capability
- Add approval and archive directories for workflow management

The system provides structured templates for:
- Requirements documents (business and technical requirements)
- Design documents (technical design and architecture)
- Tasks documents (implementation tasks breakdown)
- Steering documents (product, tech, and structure guidance)

Author: ccinoo

.spec-workflow/templates/design-template.md

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+# Design Document
+
+## Overview
+
+[High-level description of the feature and its place in the overall system]
+
+## Steering Document Alignment
+
+### Technical Standards (tech.md)
+[How the design follows documented technical patterns and standards]
+
+### Project Structure (structure.md)
+[How the implementation will follow project organization conventions]
+
+## Code Reuse Analysis
+[What existing code will be leveraged, extended, or integrated with this feature]
+
+### Existing Components to Leverage
+- **[Component/Utility Name]**: [How it will be used]
+- **[Service/Helper Name]**: [How it will be extended]
+
+### Integration Points
+- **[Existing System/API]**: [How the new feature will integrate]
+- **[Database/Storage]**: [How data will connect to existing schemas]
+
+## Architecture
+
+[Describe the overall architecture and design patterns used]
+
+### Modular Design Principles
+- **Single File Responsibility**: Each file should handle one specific concern or domain
+- **Component Isolation**: Create small, focused components rather than large monolithic files
+- **Service Layer Separation**: Separate data access, business logic, and presentation layers
+- **Utility Modularity**: Break utilities into focused, single-purpose modules
+
+```mermaid
+graph TD
+    A[Component A] --> B[Component B]
+    B --> C[Component C]
+```
+
+## Components and Interfaces
+
+### Component 1
+- **Purpose:** [What this component does]
+- **Interfaces:** [Public methods/APIs]
+- **Dependencies:** [What it depends on]
+- **Reuses:** [Existing components/utilities it builds upon]
+
+### Component 2
+- **Purpose:** [What this component does]
+- **Interfaces:** [Public methods/APIs]
+- **Dependencies:** [What it depends on]
+- **Reuses:** [Existing components/utilities it builds upon]
+
+## Data Models
+
+### Model 1
+```
+[Define the structure of Model1 in your language]
+- id: [unique identifier type]
+- name: [string/text type]
+- [Additional properties as needed]
+```
+
+### Model 2
+```
+[Define the structure of Model2 in your language]
+- id: [unique identifier type]
+- [Additional properties as needed]
+```
+
+## Error Handling
+
+### Error Scenarios
+1. **Scenario 1:** [Description]
+   - **Handling:** [How to handle]
+   - **User Impact:** [What user sees]
+
+2. **Scenario 2:** [Description]
+   - **Handling:** [How to handle]
+   - **User Impact:** [What user sees]
+
+## Testing Strategy
+
+### Unit Testing
+- [Unit testing approach]
+- [Key components to test]
+
+### Integration Testing
+- [Integration testing approach]
+- [Key flows to test]
+
+### End-to-End Testing
+- [E2E testing approach]
+- [User scenarios to test]

.spec-workflow/templates/product-template.md

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+# Product Overview
+
+## Product Purpose
+[Describe the core purpose of this product/project. What problem does it solve?]
+
+## Target Users
+[Who are the primary users of this product? What are their needs and pain points?]
+
+## Key Features
+[List the main features that deliver value to users]
+
+1. **Feature 1**: [Description]
+2. **Feature 2**: [Description]
+3. **Feature 3**: [Description]
+
+## Business Objectives
+[What are the business goals this product aims to achieve?]
+
+- [Objective 1]
+- [Objective 2]
+- [Objective 3]
+
+## Success Metrics
+[How will we measure the success of this product?]
+
+- [Metric 1]: [Target]
+- [Metric 2]: [Target]
+- [Metric 3]: [Target]
+
+## Product Principles
+[Core principles that guide product decisions]
+
+1. **[Principle 1]**: [Explanation]
+2. **[Principle 2]**: [Explanation]
+3. **[Principle 3]**: [Explanation]
+
+## Monitoring & Visibility (if applicable)
+[How do users track progress and monitor the system?]
+
+- **Dashboard Type**: [e.g., Web-based, CLI, Desktop app]
+- **Real-time Updates**: [e.g., WebSocket, polling, push notifications]
+- **Key Metrics Displayed**: [What information is most important to surface]
+- **Sharing Capabilities**: [e.g., read-only links, exports, reports]
+
+## Future Vision
+[Where do we see this product evolving in the future?]
+
+### Potential Enhancements
+- **Remote Access**: [e.g., Tunnel features for sharing dashboards with stakeholders]
+- **Analytics**: [e.g., Historical trends, performance metrics]
+- **Collaboration**: [e.g., Multi-user support, commenting]

.spec-workflow/templates/requirements-template.md

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+# Requirements Document
+
+## Introduction
+
+[Provide a brief overview of the feature, its purpose, and its value to users]
+
+## Alignment with Product Vision
+
+[Explain how this feature supports the goals outlined in product.md]
+
+## Requirements
+
+### Requirement 1
+
+**User Story:** As a [role], I want [feature], so that [benefit]
+
+#### Acceptance Criteria
+
+1. WHEN [event] THEN [system] SHALL [response]
+2. IF [precondition] THEN [system] SHALL [response]
+3. WHEN [event] AND [condition] THEN [system] SHALL [response]
+
+### Requirement 2
+
+**User Story:** As a [role], I want [feature], so that [benefit]
+
+#### Acceptance Criteria
+
+1. WHEN [event] THEN [system] SHALL [response]
+2. IF [precondition] THEN [system] SHALL [response]
+
+## Non-Functional Requirements
+
+### Code Architecture and Modularity
+- **Single Responsibility Principle**: Each file should have a single, well-defined purpose
+- **Modular Design**: Components, utilities, and services should be isolated and reusable
+- **Dependency Management**: Minimize interdependencies between modules
+- **Clear Interfaces**: Define clean contracts between components and layers
+
+### Performance
+- [Performance requirements]
+
+### Security
+- [Security requirements]
+
+### Reliability
+- [Reliability requirements]
+
+### Usability
+- [Usability requirements]

.spec-workflow/templates/structure-template.md

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+# Project Structure
+
+## Directory Organization
+
+```
+[Define your project's directory structure. Examples below - adapt to your project type]
+
+Example for a library/package:
+project-root/
+├── src/                    # Source code
+├── tests/                  # Test files  
+├── docs/                   # Documentation
+├── examples/               # Usage examples
+└── [build/dist/out]        # Build output
+
+Example for an application:
+project-root/
+├── [src/app/lib]           # Main source code
+├── [assets/resources]      # Static resources
+├── [config/settings]       # Configuration
+├── [scripts/tools]         # Build/utility scripts
+└── [tests/spec]            # Test files
+
+Common patterns:
+- Group by feature/module
+- Group by layer (UI, business logic, data)
+- Group by type (models, controllers, views)
+- Flat structure for simple projects
+```
+
+## Naming Conventions
+
+### Files
+- **Components/Modules**: [e.g., `PascalCase`, `snake_case`, `kebab-case`]
+- **Services/Handlers**: [e.g., `UserService`, `user_service`, `user-service`]
+- **Utilities/Helpers**: [e.g., `dateUtils`, `date_utils`, `date-utils`]
+- **Tests**: [e.g., `[filename]_test`, `[filename].test`, `[filename]Test`]
+
+### Code
+- **Classes/Types**: [e.g., `PascalCase`, `CamelCase`, `snake_case`]
+- **Functions/Methods**: [e.g., `camelCase`, `snake_case`, `PascalCase`]
+- **Constants**: [e.g., `UPPER_SNAKE_CASE`, `SCREAMING_CASE`, `PascalCase`]
+- **Variables**: [e.g., `camelCase`, `snake_case`, `lowercase`]
+
+## Import Patterns
+
+### Import Order
+1. External dependencies
+2. Internal modules
+3. Relative imports
+4. Style imports
+
+### Module/Package Organization
+```
+[Describe your project's import/include patterns]
+Examples:
+- Absolute imports from project root
+- Relative imports within modules
+- Package/namespace organization
+- Dependency management approach
+```
+
+## Code Structure Patterns
+
+[Define common patterns for organizing code within files. Below are examples - choose what applies to your project]
+
+### Module/Class Organization
+```
+Example patterns:
+1. Imports/includes/dependencies
+2. Constants and configuration
+3. Type/interface definitions
+4. Main implementation
+5. Helper/utility functions
+6. Exports/public API
+```
+
+### Function/Method Organization
+```
+Example patterns:
+- Input validation first
+- Core logic in the middle
+- Error handling throughout
+- Clear return points
+```
+
+### File Organization Principles
+```
+Choose what works for your project:
+- One class/module per file
+- Related functionality grouped together
+- Public API at the top/bottom
+- Implementation details hidden
+```
+
+## Code Organization Principles
+
+1. **Single Responsibility**: Each file should have one clear purpose
+2. **Modularity**: Code should be organized into reusable modules
+3. **Testability**: Structure code to be easily testable
+4. **Consistency**: Follow patterns established in the codebase
+
+## Module Boundaries
+[Define how different parts of your project interact and maintain separation of concerns]
+
+Examples of boundary patterns:
+- **Core vs Plugins**: Core functionality vs extensible plugins
+- **Public API vs Internal**: What's exposed vs implementation details  
+- **Platform-specific vs Cross-platform**: OS-specific code isolation
+- **Stable vs Experimental**: Production code vs experimental features
+- **Dependencies direction**: Which modules can depend on which
+
+## Code Size Guidelines
+[Define your project's guidelines for file and function sizes]
+
+Suggested guidelines:
+- **File size**: [Define maximum lines per file]
+- **Function/Method size**: [Define maximum lines per function]
+- **Class/Module complexity**: [Define complexity limits]
+- **Nesting depth**: [Maximum nesting levels]
+
+## Dashboard/Monitoring Structure (if applicable)
+[How dashboard or monitoring components are organized]
+
+### Example Structure:
+```
+src/
+└── dashboard/          # Self-contained dashboard subsystem
+    ├── server/        # Backend server components
+    ├── client/        # Frontend assets
+    ├── shared/        # Shared types/utilities
+    └── public/        # Static assets
+```
+
+### Separation of Concerns
+- Dashboard isolated from core business logic
+- Own CLI entry point for independent operation
+- Minimal dependencies on main application
+- Can be disabled without affecting core functionality
+
+## Documentation Standards
+- All public APIs must have documentation
+- Complex logic should include inline comments
+- README files for major modules
+- Follow language-specific documentation conventions