Add oracle pricing source registry

oracle/sources.json

@@ -0,0 +1,40 @@
+{
+  "version": "0.1",
+  "updated": "2026-03-14",
+
+  "sources": {
+
+    "coingecko": {
+      "type": "api",
+      "url": "https://api.coingecko.com/api/v3/simple/price",
+      "description": "Primary global crypto price source",
+      "rate_limit_seconds": 60
+    },
+
+    "dexscreener": {
+      "type": "api",
+      "url": "https://api.dexscreener.com/latest/dex/tokens",
+      "description": "DEX-based fallback pricing source",
+      "rate_limit_seconds": 60
+    },
+
+    "nonkyc": {
+      "type": "api",
+      "url": "https://nonkyc.io/api",
+      "description": "Exchange price source used for EGAZ and ETI",
+      "rate_limit_seconds": 60
+    },
+
+    "static_usd": {
+      "type": "static",
+      "value": 1.0,
+      "description": "Fallback static USD value for stablecoins"
+    },
+
+    "local": {
+      "type": "local",
+      "description": "Local derived pricing based on other assets"
+    }
+
+  }
+}