harden: key remembered site permissions by full origin (closes #402)

allowedSites and deniedSites held the bare hostname, so a grant to
https://dapp.example also authorised http://dapp.example and every port
on that host, and the connection, transaction and signature prompts
named only the hostname. Both lists now store and match the full origin
(scheme://host[:port]), the key the connections approved without
Remember already used. The prompts, the Settings site lists and
AUTISTMASK_REMOVE_SITE use the origin too. Entries saved by hostname
are not migrated (pre-1.0): they match no site.

Model: opus-5-5

tests/coldWorkerChainSwitch.test.js

@@ -21,7 +21,6 @@ const { makeStorageStub } = require("./support/storageStub");
 const ADDRESS = "0x66133E8ea0f5D1d612D2502a968757D1048c214a";
 
 const CONNECTED_ORIGIN = "https://dapp.example";
-const CONNECTED_HOSTNAME = "dapp.example";
 
 const MAINNET = networkById("mainnet");
 const SEPOLIA = networkById("sepolia");
@@ -50,7 +49,7 @@ function storedProfile(networkId) {
         networkId,
         rpcUrl: CUSTOM_RPC,
         blockscoutUrl: CUSTOM_BLOCKSCOUT,
-        allowedSites: { [ADDRESS]: [CONNECTED_HOSTNAME] },
+        allowedSites: { [ADDRESS]: [CONNECTED_ORIGIN] },
         deniedSites: {},
         trackedTokens: [{ address: TOKEN, symbol: "DAI", decimals: 18 }],
         theme: "dark",
@@ -168,7 +167,7 @@ describe("a chain switch on a worker that never loaded state", () => {
         expect(after.wallets).toEqual(walletFixture());
         expect(after.hasWallet).toBe(true);
         expect(after.activeAddress).toBe(ADDRESS);
-        expect(after.allowedSites).toEqual({ [ADDRESS]: [CONNECTED_HOSTNAME] });
+        expect(after.allowedSites).toEqual({ [ADDRESS]: [CONNECTED_ORIGIN] });
         expect(after.trackedTokens).toEqual([
             { address: TOKEN, symbol: "DAI", decimals: 18 },
         ]);