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+# Workflow Architecture Visualization
+
+## System Overview
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                        AutoMetabuilder                          │
+│                                                                 │
+│  ┌──────────────────────────────────────────────────────────┐  │
+│  │                   Workflow Engine                        │  │
+│  │  ┌────────────────────────────────────────────────────┐  │  │
+│  │  │            Plugin Registry (78 plugins)           │  │  │
+│  │  │  ┌────────────────────────────────────────────┐   │  │  │
+│  │  │  │  Backend Infrastructure (8)                │   │  │  │
+│  │  │  │  Logic & Comparison (9)                    │   │  │  │
+│  │  │  │  List Operations (7)                       │   │  │  │
+│  │  │  │  Dictionary Operations (6)                 │   │  │  │
+│  │  │  │  String Manipulation (8)                   │   │  │  │
+│  │  │  │  Math Operations (10)                      │   │  │  │
+│  │  │  │  Type Conversions (7)                      │   │  │  │
+│  │  │  │  Control Flow (1)                          │   │  │  │
+│  │  │  │  State Management (4)                      │   │  │  │
+│  │  │  │  Core AI & Tools (19 existing)            │   │  │  │
+│  │  │  └────────────────────────────────────────────┘   │  │  │
+│  │  └────────────────────────────────────────────────────┘  │  │
+│  │                                                           │  │
+│  │  ┌────────────────────────────────────────────────────┐  │  │
+│  │  │              Workflow Packages                     │  │  │
+│  │  │  • backend_bootstrap                               │  │  │
+│  │  │  • data_processing_demo                            │  │  │
+│  │  │  • conditional_logic_demo                          │  │  │
+│  │  │  • single_pass, iterative_loop, etc. (existing)   │  │  │
+│  │  └────────────────────────────────────────────────────┘  │  │
+│  │                                                           │  │
+│  │  ┌────────────────────────────────────────────────────┐  │  │
+│  │  │              Workflow Runtime                      │  │  │
+│  │  │  • Store (mutable state)                           │  │  │
+│  │  │  • Context (immutable config)                      │  │  │
+│  │  │  • Variable Binding ($var syntax)                  │  │  │
+│  │  │  • Error Handling                                  │  │  │
+│  │  └────────────────────────────────────────────────────┘  │  │
+│  └──────────────────────────────────────────────────────────┘  │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+## Plugin Execution Flow
+
+```
+┌─────────────┐
+│   Start     │
+│  Workflow   │
+└──────┬──────┘
+       │
+       ▼
+┌─────────────────────────────────────────────┐
+│  Load Workflow Definition (JSON)            │
+│  • nodes: array of plugin instances         │
+│  • connections: node linkages                │
+└──────┬──────────────────────────────────────┘
+       │
+       ▼
+┌─────────────────────────────────────────────┐
+│  Initialize Runtime                          │
+│  • store = {} (empty state)                  │
+│  • context = {config, clients, tools}        │
+└──────┬──────────────────────────────────────┘
+       │
+       ▼
+┌─────────────────────────────────────────────┐
+│  Execute Node (example: logic.and)           │
+│  1. Resolve inputs from store                │
+│     values = [$is_adult, $is_passing]        │
+│  2. Call plugin: run(runtime, inputs)        │
+│  3. Store outputs to runtime.store           │
+│     store["result"] = True/False             │
+└──────┬──────────────────────────────────────┘
+       │
+       ▼
+┌─────────────────────────────────────────────┐
+│  Execute Next Connected Node                 │
+│  (repeat until all nodes executed)           │
+└──────┬──────────────────────────────────────┘
+       │
+       ▼
+┌─────────────┐
+│   Workflow  │
+│   Complete  │
+└─────────────┘
+```
+
+## Plugin Structure
+
+```python
+# Generic plugin template
+def run(runtime, inputs):
+    """
+    Args:
+        runtime: WorkflowRuntime
+            - runtime.store: dict (shared state)
+            - runtime.context: dict (config)
+            - runtime.logger: Logger
+        
+        inputs: dict
+            - Parameters from workflow definition
+            - Can reference store variables with $name
+    
+    Returns:
+        dict: Output values stored in runtime.store
+            - Keys become available as $key in later nodes
+            - Optional "error" field for error handling
+    """
+    # Example: math.add
+    numbers = inputs.get("numbers", [])
+    result = sum(numbers)
+    return {"result": result}
+```
+
+## Variable Binding Example
+
+```json
+{
+  "nodes": [
+    {
+      "id": "node1",
+      "type": "var.set",
+      "parameters": {
+        "key": "user_age",
+        "value": 25
+      }
+    },
+    {
+      "id": "node2",
+      "type": "logic.gte",
+      "parameters": {
+        "a": "$user_age",      // References store["user_age"]
+        "b": 18
+      }
+    },
+    {
+      "id": "node3",
+      "type": "string.format",
+      "parameters": {
+        "template": "Age {age} is adult: {is_adult}",
+        "variables": {
+          "age": "$user_age",       // From node1
+          "is_adult": "$result"     // From node2
+        }
+      }
+    }
+  ]
+}
+```
+
+## Backend Bootstrap Workflow
+
+```
+┌──────────────────┐
+│ Load Messages    │  → store["messages"] = {...}
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Load Metadata    │  → store["metadata"] = {...}
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Load Prompt      │  → store["prompt"] = {...}
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Create GitHub    │  → store["gh"] = GitHubIntegration(...)
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Create OpenAI    │  → store["client"] = OpenAI(...)
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Load Tools       │  → store["tools"] = [...]
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Build Tool Map   │  → store["tool_map"] = {...}
+└────────┬─────────┘
+         │
+         ▼
+┌──────────────────┐
+│ Load Plugins     │  → Registers all plugins
+└──────────────────┘
+```
+
+## Data Processing Demo Workflow
+
+```
+┌────────────────┐
+│ Create Data    │  numbers = [1,2,3,4,5,6,7,8,9,10]
+└───────┬────────┘
+        │
+        ▼
+┌────────────────┐
+│ Filter Even    │  filtered = [2,4,6,8,10]
+└───────┬────────┘
+        │
+        ▼
+┌────────────────┐
+│ Square Values  │  squared = [4,16,36,64,100]
+└───────┬────────┘
+        │
+        ▼
+┌────────────────┐
+│ Sum Values     │  sum = 220
+└───────┬────────┘
+        │
+        ▼
+┌────────────────┐
+│ Check > 50     │  is_greater = True
+└───────┬────────┘
+        │
+        ▼
+┌────────────────┐
+│ Branch Result  │  → output[0] if True
+└───┬────────┬───┘    → output[1] if False
+    │        │
+    ▼        ▼
+  [True]  [False]
+    │        │
+    ▼        ▼
+┌─────────┐ ┌─────────┐
+│Success  │ │Failure  │
+│Message  │ │Message  │
+└────┬────┘ └────┬────┘
+     └──────┬────┘
+            ▼
+    ┌──────────────┐
+    │ Store Result │
+    └──────────────┘
+```
+
+## Plugin Categories & Use Cases
+
+### Backend Infrastructure
+**Purpose**: System initialization  
+**Use Case**: Replace imperative setup code with declarative workflow
+
+### Logic & Comparison
+**Purpose**: Boolean operations  
+**Use Case**: Conditional branching, validation rules
+
+### List Operations
+**Purpose**: Collection manipulation  
+**Use Case**: Data filtering, searching, aggregation
+
+### Dictionary Operations
+**Purpose**: Object/map manipulation  
+**Use Case**: Configuration management, data extraction
+
+### String Manipulation
+**Purpose**: Text processing  
+**Use Case**: Formatting, parsing, report generation
+
+### Math Operations
+**Purpose**: Arithmetic calculations  
+**Use Case**: Score calculations, statistics, metrics
+
+### Type Conversions
+**Purpose**: Data type transformations  
+**Use Case**: API data normalization, serialization
+
+### Control Flow
+**Purpose**: Execution branching  
+**Use Case**: State machines, routing logic
+
+### State Management
+**Purpose**: Variable storage/retrieval  
+**Use Case**: Passing data between distant nodes
+
+## Benefits of This Architecture
+
+### 1. Declarative Programming
+- Logic expressed as data (JSON)
+- Visual representation possible
+- Version controllable
+
+### 2. Composability
+- Small plugins combine into complex workflows
+- Reusable patterns as packages
+- No code duplication
+
+### 3. Testability
+- Plugins testable in isolation
+- Workflows testable as units
+- Mock-free testing
+
+### 4. Extensibility
+- New plugins easy to add
+- No changes to core engine
+- Backward compatible
+
+### 5. Low-Code Capability
+- Non-programmers can build workflows
+- Drag-and-drop potential
+- Template-based development
+
+## Performance Characteristics
+
+- **Plugin Loading**: O(1) - cached after first load
+- **Node Execution**: O(n) - linear in number of nodes
+- **Variable Resolution**: O(1) - dict lookup
+- **Memory Usage**: O(m) - proportional to store size
+- **Scalability**: Each workflow runs independently
+
+## Future Extensions
+
+### More Plugins
+- File I/O operations
+- HTTP/REST calls
+- Database queries
+- Date/time operations
+- Regular expressions
+- Crypto operations
+
+### Advanced Features
+- Parallel execution
+- Async operations
+- Error recovery
+- Workflow versioning
+- Performance profiling
+
+### Developer Tools
+- Visual workflow editor
+- Plugin scaffolding CLI
+- Workflow debugger
+- Performance analyzer
+- Template marketplace