feat: add Robinhood Chain hop tokens and chain config

chains.yaml

@@ -0,0 +1,20 @@
+# Custom chain registry for Robinhood Chain.
+#
+# Fynd / tycho-common use this to register "robinhood" as a custom chain until
+# Chain::Robinhood ships as a first-class variant in the upstream tycho-common crate.
+# Pass via `--chains-config chains.yaml` or `TYCHO_CHAINS_CONFIG=chains.yaml`.
+chains:
+  - name: robinhood
+    chain_id: 4663
+    block_time_secs: 1
+    native:
+      address: "0x0000000000000000000000000000000000000000"
+      symbol: "ETH"
+      decimals: 18
+    wrapped_native:
+      address: "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73"
+      symbol: "WETH"
+      decimals: 18
+    default_tvl_thresholds:
+      low: 10
+      medium: 100

fynd-rpc/src/config.rs

@@ -181,6 +181,7 @@ pub mod defaults {
             "bsc" => Ok("https://bsc-dataseed.bnbchain.org"),
             "arbitrum" => Ok("https://arbitrum.drpc.org"),
             "polygon" => Ok("https://polygon.drpc.org"),
+            "robinhood" => Ok("https://rpc.mainnet.chain.robinhood.com"),
             other => Err(format!(
                 "no default RPC URL for chain '{}'. Please provide --rpc-url explicitly.",
                 other
@@ -205,6 +206,7 @@ pub mod defaults {
             "bsc" => Ok("tycho-bsc-beta.propellerheads.xyz"),
             "arbitrum" => Ok("tycho-arbitrum-beta.propellerheads.xyz"),
             "polygon" => Ok("tycho-polygon-beta.propellerheads.xyz"),
+            "robinhood" => Ok("tycho-robinhood-beta.propellerheads.xyz"),
             other => Err(format!(
                 "no default Tycho URL for chain '{}'. Please provide --tycho-url explicitly.",
                 other

robinhood_pools.toml

@@ -0,0 +1,31 @@
+# Worker-pools config for running Fynd on Robinhood Chain (chain-id 4663) — pass with
+# `--worker-pools-config robinhood_pools.toml` (e.g. `hindsight monitor --chain robinhood`).
+#
+# Two pools run concurrently; the router keeps the best result by amount_out_net_gas.
+# most_liquid is the cheap single-path baseline; path_frank_wolfe adds split routing that
+# helps larger trades. Both restrict intermediate hops to Robinhood Chain's most-connected
+# tokens. Robinhood Chain uses USDG as its stablecoin (no USDC/USDT/DAI/WBTC).
+
+[pools.most_liquid_robinhood]
+algorithm           = "most_liquid"
+num_workers         = 3
+task_queue_capacity = 1000
+max_hops            = 3
+timeout_ms          = 500
+connector_tokens = [
+    "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73", # WETH
+    "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168", # USDG
+    "0x0000000000000000000000000000000000000000", # ETH (native gas)
+]
+
+[pools.path_frank_wolfe_robinhood]
+algorithm           = "path_frank_wolfe"
+num_workers         = 3
+task_queue_capacity = 1000
+max_hops            = 3
+timeout_ms          = 1000
+connector_tokens = [
+    "0x0Bd7D308f8E1639FAb988df18A8011f41EAcAD73", # WETH
+    "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168", # USDG
+    "0x0000000000000000000000000000000000000000", # ETH (native gas)
+]

tools/hindsight/src/resolve/monitor.rs

@@ -323,6 +323,7 @@ async fn build_solver(
 fn default_lag_blocks(chain: &str) -> u64 {
     let block_secs = match chain.to_lowercase().as_str() {
         "base" => 2,
+        "robinhood" => 1,
         _ => 12,
     };
     (20 * 60 / block_secs).max(1)