feat: order and label per-chain token breakdown by ecosystem + standard

The per-chain list shown when picking an action (Send/Receive/Swap/Buy/Sell/
Gift) for a token that exists on multiple chains (e.g. USDT) now orders
Ethereum and Tron right after the existing Pezkuwi/Polkadot/Kusama priority
chains instead of falling into the alphabetical "everything else" bucket,
and appends a token-standard label - "(PEZ-20)"/"(ERC-20)"/"(TRC-20)" - to
disambiguate which issuance this is, since a bare chain name alone doesn't
convey that.

The label is intentionally chain-specific, not derived from Chain.Asset.Type,
since every Statemine-type chain (Polkadot AH, Kusama AH, Pezkuwi AH) shares
the same asset type but only Pezkuwi AH's issuance needs the PEZ-20 label.

runtime/src/main/java/io/novafoundation/nova/runtime/ext/ChainExt.kt

@@ -488,6 +488,7 @@ object ChainGeneses {
 object ChainIds {
 
     const val ETHEREUM = "$EIP_155_PREFIX:1"
+    const val TRON = "tron:0x2b6653dc"
 
     const val MOONBEAM = ChainGeneses.MOONBEAM
     const val MOONRIVER = ChainGeneses.MOONRIVER
@@ -499,6 +500,21 @@ val Chain.Companion.Geneses
 val Chain.Companion.Ids
     get() = ChainIds
 
+/**
+ * A short, user-facing token-standard label for chains where disambiguating "which token standard is this"
+ * is actually useful (multiple ecosystems all issue their own USDT/USDC etc., so a bare chain name isn't
+ * always enough context). Deliberately NOT derived from [Chain.Asset.Type] (e.g. every Statemine-type chain
+ * would get the same label) - this is chain-specific by design, matching exactly which labels are
+ * recognizable/expected by users (PEZ-20, ERC-20, TRC-20), not a mechanical one-label-per-asset-type mapping.
+ */
+val Chain.assetStandardLabelOrNull: String?
+    get() = when {
+        genesisHash == Chain.Geneses.PEZKUWI_ASSET_HUB -> "PEZ-20"
+        id == Chain.Ids.ETHEREUM -> "ERC-20"
+        id == Chain.Ids.TRON -> "TRC-20"
+        else -> null
+    }
+
 fun Chain.Asset.requireStatemine(): Type.Statemine {
     require(type is Type.Statemine)
 

runtime/src/main/java/io/novafoundation/nova/runtime/ext/ChainSorting.kt

@@ -3,19 +3,23 @@ package io.novafoundation.nova.runtime.ext
 import io.novafoundation.nova.runtime.multiNetwork.chain.model.Chain
 
 val Chain.mainChainsFirstAscendingOrder
-    get() = when (genesisHash) {
+    get() = when {
         // Pezkuwi ecosystem first
-        Chain.Geneses.PEZKUWI -> 0
-        Chain.Geneses.PEZKUWI_ASSET_HUB -> 1
-        Chain.Geneses.PEZKUWI_PEOPLE -> 2
+        genesisHash == Chain.Geneses.PEZKUWI -> 0
+        genesisHash == Chain.Geneses.PEZKUWI_ASSET_HUB -> 1
+        genesisHash == Chain.Geneses.PEZKUWI_PEOPLE -> 2
         // Then Polkadot ecosystem
-        Chain.Geneses.POLKADOT -> 3
-        Chain.Geneses.POLKADOT_ASSET_HUB -> 4
+        genesisHash == Chain.Geneses.POLKADOT -> 3
+        genesisHash == Chain.Geneses.POLKADOT_ASSET_HUB -> 4
         // Then Kusama ecosystem
-        Chain.Geneses.KUSAMA -> 5
-        Chain.Geneses.KUSAMA_ASSET_HUB -> 6
+        genesisHash == Chain.Geneses.KUSAMA -> 5
+        genesisHash == Chain.Geneses.KUSAMA_ASSET_HUB -> 6
+        // Then Ethereum, then Tron - not identified by genesisHash (that's substrate-only), so this can't
+        // stay a `when (genesisHash)` subject match once these two are added
+        id == Chain.Ids.ETHEREUM -> 7
+        id == Chain.Ids.TRON -> 8
         // Everything else
-        else -> 7
+        else -> 9
     }
 
 val Chain.testnetsLastAscendingOrder