chore: sync submodule state (parent ref update)

Made-with: Cursor

docs/deployment/CRONOS_TRUSTLESS_BRIDGE_DESIGN.md

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+# Cronos Trustless Bridge Design
+
+Design for adapting the trustless bridge to Cronos (Chain 25). The existing trustless bridge targets Chain 138 ↔ Ethereum Mainnet and uses Mainnet DEX addresses.
+
+## Current Architecture (Chain 138 ↔ Mainnet)
+
+- Lockbox138 — On Chain 138
+- InboxETH, BondManager, ChallengeManager, LiquidityPoolETH, SwapRouter — On Mainnet
+- SwapRouter uses Uniswap V3, Curve 3Pool, 1inch
+
+## Cronos Adaptations
+
+### Option A: Cronos ↔ Chain 138
+
+- Lockbox on Cronos; Inbox on Chain 138
+- SwapRouter uses Chain 138 or Cronos DEXes
+
+### Option B: Cronos ↔ Mainnet
+
+- Lockbox on Cronos (Cronos WETH 0x99B3511A...)
+- Inbox/LiquidityPool/SwapRouter on Mainnet (unchanged)
+
+### Cronos DEX Addresses
+
+- VVS Finance, CronaSwap — lookup router addresses from official docs
+
+## Implementation
+
+1. Add Cronos config (WETH, LINK, stables)
+2. Create SwapRouterCronos or parameterize SwapRouter
+3. Deploy Lockbox on Cronos
+4. Deploy Inbox on destination chain
+
+## Related
+
+- script/bridge/trustless/DeployTrustlessBridge.s.sol
+- docs/bridge/trustless/DEPLOYMENT_GUIDE.md