feat(sentiment): add trade asset aliases & known entities; add Glassnode/WSJ RSS sources

- Added 15 trade assets (ZIL, ONG, ONE, STX, ALGO, DASH, LTC, FET, XTZ, ENJ, XLM, ETC, TRX) to asset_aliases.yaml
- Added same assets with metadata to known_entities.yaml (chain, type, market_cap_rank)
- Added Glassnode Insights (0.85 cred) and WSJ Crypto (0.85 cred) to sources.yaml
- Trade log analysis shows these small-caps had zero news coverage - aliases enable entity extraction

sentiment_engine/config/known_entities.yaml

@@ -83,3 +83,94 @@ entities:
     chain: "ethereum"
     contracts: ["0x514910771AF9Ca656af840dff83E8264EcF986CA"]
     market_cap_rank: 18
+
+  ZIL:
+    name: "Zilliqa"
+    type: "crypto"
+    chain: "zilliqa"
+    contracts: []
+    market_cap_rank: 80
+
+  ONG:
+    name: "Ontology Gas"
+    type: "crypto"
+    chain: "ontology"
+    contracts: []
+    market_cap_rank: 200
+
+  ONE:
+    name: "Harmony"
+    type: "crypto"
+    chain: "harmony"
+    contracts: []
+    market_cap_rank: 120
+
+  STX:
+    name: "Stacks"
+    type: "crypto"
+    chain: "stacks"
+    contracts: []
+    market_cap_rank: 60
+
+  ALGO:
+    name: "Algorand"
+    type: "crypto"
+    chain: "algorand"
+    contracts: []
+    market_cap_rank: 45
+
+  DASH:
+    name: "Dash"
+    type: "crypto"
+    chain: "dash"
+    contracts: []
+    market_cap_rank: 90
+
+  LTC:
+    name: "Litecoin"
+    type: "crypto"
+    chain: "litecoin"
+    contracts: []
+    market_cap_rank: 20
+
+  FET:
+    name: "Fetch.ai"
+    type: "crypto"
+    chain: "ethereum"
+    contracts: ["0x031b41e504677879370e9dbcf937283a8691fa7f"]
+    market_cap_rank: 100
+
+  XTZ:
+    name: "Tezos"
+    type: "crypto"
+    chain: "tezos"
+    contracts: []
+    market_cap_rank: 70
+
+  ENJ:
+    name: "Enjin Coin"
+    type: "crypto"
+    chain: "ethereum"
+    contracts: ["0xF4A6c8b57d3F8d41E9E119D2E69524D3a0832e97"]
+    market_cap_rank: 110
+
+  XLM:
+    name: "Stellar"
+    type: "crypto"
+    chain: "stellar"
+    contracts: []
+    market_cap_rank: 30
+
+  ETC:
+    name: "Ethereum Classic"
+    type: "crypto"
+    chain: "ethereumclassic"
+    contracts: []
+    market_cap_rank: 35
+
+  TRX:
+    name: "TRON"
+    type: "crypto"
+    chain: "tron"
+    contracts: []
+    market_cap_rank: 15