Add Skill: blacknode-text-concatenation-workflow

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

skills/blacknode-text-concatenation-workflow/metadata.json

@@ -0,0 +1,33 @@
+{
+  "name": "blacknode-text-concatenation-workflow",
+  "version": "1.0.0",
+  "goal": "Concatenate two text strings using a Blacknode graph of Text, Concat, and Output nodes.",
+  "inputs": [
+    "text_a: string",
+    "text_b: string"
+  ],
+  "steps": [
+    "Initialize a Blacknode Graph object.",
+    "Add a Text node with parameter value set to text_a.",
+    "Add a second Text node with parameter value set to text_b.",
+    "Add a Concat node (no parameters required).",
+    "Add an Output node (no parameters required).",
+    "Connect the 'value' output port of the first Text node to the 'a' input port of the Concat node.",
+    "Connect the 'value' output port of the second Text node to the 'b' input port of the Concat node.",
+    "Connect the 'value' output port of the Concat node to the 'value' input port of the Output node.",
+    "Evaluate the graph by cooking the Output node's 'value' port to obtain the concatenated result."
+  ],
+  "outputs": [
+    "concatenated_text: string"
+  ],
+  "failure_modes": [
+    "Node types 'Text', 'Concat', or 'Output' not registered in Blacknode runtime",
+    "Port name mismatches during edge creation",
+    "Missing input values causing empty concatenation",
+    "Graph evaluation error if cycles or disconnected required ports"
+  ],
+  "confidence": 0.95,
+  "explanation": "Extracted from examples/converted_text_pipeline.py and referenced templates/text-pipeline.json in the Blacknode repo. This workflow is a foundational, dependency-free pattern for building directed graphs of typed nodes and is applicable to any simple data combination task.",
+  "source_repo": "https://github.com/temiroff/Blacknode.git",
+  "score": 1.0
+}