Add Skill: graph-based-node-workflow

Extracted from: https://github.com/temiroff/Blacknode.git
Score: 1.0

skills/graph-based-node-workflow/metadata.json

@@ -0,0 +1,31 @@
+{
+  "name": "graph-based-node-workflow",
+  "version": "1.0.0",
+  "goal": "Create and execute typed node graphs for AI/robotics workflows by defining nodes with inputs/outputs and connecting them with edges, then cooking the graph to run the workflow.",
+  "inputs": [
+    "bn.Graph() - the graph container for the workflow",
+    "Node definitions (Literal, Text, LLMAgent, Concat, Output, etc.) with specified inputs and outputs",
+    "Edge connections mapping from_port to to_port between nodes"
+  ],
+  "steps": [
+    "Step 1: Initialize a bn.Graph() instance to serve as the workflow container",
+    "Step 2: Define individual nodes with their required inputs and outputs (e.g., Literal for data, LLMAgent for inference, Concat for combining, Output for final results)",
+    "Step 3: Create edges connecting nodes by specifying source from_port and destination to_port for each data flow",
+    "Step 4: Execute the graph by calling g.cook() to process the defined workflow and produce results"
+  ],
+  "outputs": [
+    "Executed workflow results stored in the graph's output nodes",
+    "Cooked graph ready for inspection, replay, or deployment",
+    "Potential error states if node dependencies are missing or ports don't match"
+  ],
+  "failure_modes": [
+    "Missing node dependencies causing undefined variable errors",
+    "Port mismatch in edge connections leading to no data flow",
+    "Incomplete graph definition causing cook() to fail",
+    "Model API key missing or invalid for LLMAgent nodes"
+  ],
+  "confidence": 0.95,
+  "explanation": "This workflow pattern is reusable across different AI/robotics applications because it provides a standardized way to compose complex pipelines from typed nodes. The pattern can be adapted to various use cases like research pipelines, agent workflows, or robotics control graphs by simply adding/removing nodes and edges while maintaining the same graph-cooking execution model.",
+  "source_repo": "https://github.com/temiroff/Blacknode.git",
+  "score": 1.0
+}