fix: the swap decoder reads who the router's transfer commands pay (closes #599)

TRANSFER, PAY_PORTION, PAY_PORTION_FULL_PRECISION (0x07, on the 0x7f-mask
routers), PERMIT2_TRANSFER_FROM, ACROSS_V4_DEPOSIT_V3 (0x40) and V4
TAKE_PORTION were payouts the decoder did not read. Each recipient is now
read: the sender, the router, a hop into the next V2 pair, or another
address, which is named. Paying all the router holds of a token pays it out
as SWEEP does; a TRANSFER of CONTRACT_BALANCE of ETH reverts. A
PERMIT2_TRANSFER_FROM into the router shows the amount it moves and the
token's address, and a bridge deposit names each of its recipient and
depositor that is not the sender; either keeps the minimum from reading
received.

Model: opus-5-5

tests/uniswap.test.js

@@ -954,7 +954,28 @@ describe("uniswap decoder", () => {
             router: "UniversalRouterV2_1_2",
             address: ROUTER_V2_1_2_ADDR,
             command: "0x40",
-            steps: "Command 0x40",
+            steps: "Across Bridge Deposit",
+        },
+        // Only the routers with the 0x7f mask have 0x07, as
+        // PAY_PORTION_FULL_PRECISION; the others revert on it
+        // (https://git.eeqj.de/sneak/AutistMask/issues/599).
+        {
+            router: "UniversalRouterV1",
+            address: ROUTER_V1_ADDR,
+            command: "0x07",
+            steps: "Command 0x07",
+        },
+        {
+            router: "UniversalRouterV2",
+            address: ROUTER_ADDR,
+            command: "0x07",
+            steps: "Command 0x07",
+        },
+        {
+            router: "UniversalRouterV2_1_2",
+            address: ROUTER_V2_1_2_ADDR,
+            command: "0x07",
+            steps: "Pay Portion (Full Precision)",
         },
     ])(
         "command $command sent to $router is listed as $steps",