v0.11.0

• Keep an unknown submission's key Pending instead of releasing it for a second payment
• Sign Solana and EVM sends once and broadcast the same bytes to every endpoint
• Price Bitcoin fees from the chain source, capped at 1000 sat/vB
• Fail EVM quotes instead of pricing gas at zero
• Report a Lightning 200 that does not identify the payment as unknown
• Refuse an unreadable BDK changeset instead of starting a fresh wallet
• Keep PostgreSQL backup passwords out of process arguments