feat(fase2): wire local + Foundry profiles + model-map + env template

src/portfolio_optimiser/data/model_map.json

@@ -0,0 +1,13 @@
+{
+  "_note": "Role -> model/deployment map (B12). Validated by contracts.py (Step 11). LOCAL uses an Ollama model id; AZURE deployment names are tenant-specific — the operator replaces the placeholders (or supplies them via env).",
+  "local": {
+    "default": "qwen3:4b",
+    "proposer": "qwen3:4b",
+    "checker": "qwen3:4b"
+  },
+  "azure": {
+    "default": "REPLACE-WITH-FOUNDRY-DEPLOYMENT",
+    "proposer": "REPLACE-WITH-FOUNDRY-DEPLOYMENT",
+    "checker": "REPLACE-WITH-FOUNDRY-DEPLOYMENT"
+  }
+}