feat: Add comprehensive test generation and evaluation commands

- Introduced `/workflow:test-gen` command to automate test workflow generation based on completed implementation tasks, including detailed lifecycle phases, task decomposition, and agent assignment.
- Implemented `/workflow:concept-eval` command for pre-planning evaluation of concepts, assessing feasibility, risks, and optimization recommendations using strategic and technical analysis tools.
- Added `/workflow:docs` command for generating hierarchical architecture and API documentation, with structured task creation and session management.
- Developed `/workflow:status` command to provide on-demand views of workflow state, supporting multiple formats and validation checks for task integrity and relationships.

.claude/commands/workflow/session/start.md

@@ -1,69 +1,82 @@
 ---
 name: start
-description: Start a new workflow session
-usage: /workflow:session:start "task description"
-
+description: Discover existing sessions or start a new workflow session with intelligent session management
+usage: /workflow:session:start [task_description]
+argument-hint: [optional: task description for new session]
 examples:
   - /workflow:session:start "implement OAuth2 authentication"
   - /workflow:session:start "fix login bug"
+  - /workflow:session:start
 ---
 
 # Start Workflow Session (/workflow:session:start)
 
-## Purpose
-Initialize a new workflow session for the given task description.
+## Overview
+Manages workflow sessions - discovers existing active sessions or creates new ones.
 
 ## Usage
 ```bash
-/workflow/session/start "task description"
+/workflow:session:start                    # Discover/select existing sessions
+/workflow:session:start "task description" # Create new session
 ```
 
-## Automatic Behaviors
+## Implementation Flow
 
-### Session Creation
-- Generates unique session ID: WFS-[topic-slug]
-- Creates `.workflow/.active-[session-name]` marker file
-- Deactivates any existing active session
-
-### Complexity Detection
-Automatically determines complexity based on task description:
-- **Simple**: Single module, <5 tasks
-- **Medium**: Multiple modules, 5-15 tasks  
-- **Complex**: Large scope, >15 tasks
-
-### Directory Structure
-Creates session directory with:
-```
-.workflow/WFS-[topic-slug]/
-├── workflow-session.json    # Session metadata
-├── IMPL_PLAN.md            # Initial planning template
-├── .task/                  # Task management
-└── reports/                # Report generation
+### Step 1: Check for Active Sessions
+```bash
+ls .workflow/.active-* 2>/dev/null
 ```
 
-### Phase Initialization
-- **Simple**: Ready for direct implementation
-- **Medium/Complex**: Ready for planning phase
+### Step 2: List Existing Sessions
+```bash
+ls -1 .workflow/WFS-* 2>/dev/null | head -5
+```
 
-## Session State
-Creates `workflow-session.json` with:
-- Session ID and description
-- Current phase: INIT → PLAN
-- Document tracking
-- Task system configuration
-- Active marker reference
+### Step 3: Create New Session (if needed)
+```bash
+mkdir -p .workflow
+echo "auth-system" | sed 's/[^a-zA-Z0-9]/-/g' | tr '[:upper:]' '[:lower:]'
+```
 
-## Next Steps
-After starting a session:
-- Use `/workflow/plan` to create implementation plan
-- Use `/workflow/execute` to begin implementation
-- Use `/context` to view session status
+### Step 4: Create Session Directory Structure
+```bash
+mkdir -p .workflow/WFS-auth-system/.process
+mkdir -p .workflow/WFS-auth-system/.task
+mkdir -p .workflow/WFS-auth-system/.summaries
+```
 
-## Error Handling
-- **Duplicate session**: Warns if similar session exists
-- **Invalid description**: Prompts for valid task description
-- **Directory conflicts**: Handles existing directories gracefully
+### Step 5: Create Session Metadata
+```bash
+echo '{"session_id":"WFS-auth-system","project":"authentication system","status":"planning"}' > .workflow/WFS-auth-system/workflow-session.json
+```
 
----
+### Step 6: Mark Session as Active
+```bash
+touch .workflow/.active-WFS-auth-system
+```
 
-**Creates**: New active workflow session ready for planning and execution
+### Step 7: Clean Old Active Markers (if creating new)
+```bash
+rm .workflow/.active-WFS-* 2>/dev/null
+```
+
+## Simple Bash Commands
+
+### Basic Operations
+- **Check sessions**: `ls .workflow/.active-*`
+- **List sessions**: `ls .workflow/WFS-*`
+- **Create directory**: `mkdir -p .workflow/WFS-session-name/.process`
+- **Create file**: `echo 'content' > .workflow/session/file.json`
+- **Mark active**: `touch .workflow/.active-WFS-session-name`
+- **Clean markers**: `rm .workflow/.active-*`
+
+### No Complex Logic
+- No variables or functions
+- No conditional statements
+- No loops or pipes
+- Direct bash commands only
+
+## Related Commands
+- `/workflow:plan` - Uses this for session management
+- `/workflow:execute` - Uses this for session discovery
+- `/workflow:session:status` - Shows session information