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

src/shared/persistedState.js

@@ -102,11 +102,11 @@ function tokenRefs(value) {
 
 // A list of strings, for the fields whose entries are dereferenced as text:
 // fraudContracts (`a.toLowerCase()` in src/popup/views/send.js and
-// src/shared/transactions.js) and each address's hostname list in the site maps
-// below (`h !== host` filters, `list.includes(hostname)` in the background).
+// src/shared/transactions.js) and each address's origin list in the site maps
+// below (`o !== origin` filters, `list.includes(origin)` in the background).
 //
 // Same rule as tokenRefs(), for the same reason: the container AND the entries,
-// with a malformed entry DROPPED rather than repaired. A number in a hostname
+// with a malformed entry DROPPED rather than repaired. A number in an origin
 // list names no site and a number in fraudContracts names no contract, so there
 // is nothing to repair either to, and the empty list is a legitimate value that
 // survives. The result is a fresh array of primitives, so it shares no
@@ -116,21 +116,22 @@ function textList(value) {
     return value.filter((entry) => typeof entry === "string");
 }
 
-// allowedSites / deniedSites: { [address]: [hostname, ...] }.
+// allowedSites / deniedSites: { [address]: [origin, ...] }, each origin the
+// full scheme://host[:port] of a site.
 //
 // The container check these had (truthy and not an array) is not the floor:
 // `{"0xabc…": "notalist"}` IS a non-array object, and the dereference is one
-// level below it. saveState() merges these maps per key and then per hostname
+// level below it. saveState() merges these maps per key and then per origin
 // WITHIN each key, so a stored value that is not a list reaches `base.map()` in
 // mergeListByIdentity() (src/shared/state.js) and throws — after the popup has
 // rendered, which is why every save from then on failed while the UI looked
 // healthy (https://git.eeqj.de/sneak/AutistMask/issues/362). The Settings
 // revoke button (`list.filter()`), and the background's
-// `allowed.includes(hostname)` gate, dereference it the same way; on that last
+// `allowed.includes(origin)` gate, dereference it the same way; on that last
 // one a stored string would also answer a SUBSTRING match, so a corrupt map
 // could widen a site permission rather than merely throw.
 //
-// An address key whose value is not a list of hostnames is dropped entirely: it
+// An address key whose value is not a list of origins is dropped entirely: it
 // grants and denies nothing, and dropping it fails closed. A stored own
 // "__proto__" key — which JSON can carry — is dropped for the same reason: it
 // can never be a wallet address, so it grants nothing either, and keeping it
@@ -143,9 +144,9 @@ function siteMap(value) {
     if (!isRecord(value)) return out;
     for (const address of Object.keys(value)) {
         if (address === "__proto__") continue;
-        const hostnames = textList(value[address]);
-        if (hostnames.length === 0) continue;
-        defineOwn(out, address, hostnames);
+        const origins = textList(value[address]);
+        if (origins.length === 0) continue;
+        defineOwn(out, address, origins);
     }
     return out;
 }

src/shared/state.js

@@ -304,7 +304,7 @@ function mergeAddress(base, ours, theirs) {
 }
 
 // Merge a plain object keyed by string (allowedSites/deniedSites: address ->
-// hostname list; networkEndpoints: networkId -> {rpcUrl, blockscoutUrl}) the
+// origin list; networkEndpoints: networkId -> {rpcUrl, blockscoutUrl}) the
 // same way mergeListByIdentity() merges an array — by key, not by whole-
 // object diff — so a key one page added or removed applies independently of
 // a key another page edited. Unlike an array's identity function, an object
@@ -353,25 +353,25 @@ function mergeMapByKey(base, ours, theirs, mergeLeaf) {
     return result;
 }
 
-// allowedSites/deniedSites: { [address]: [hostname, ...] }. The hostname
+// allowedSites/deniedSites: { [address]: [origin, ...] }. The origin
 // list is itself membership, not a leaf — the background appends a newly
-// approved/denied hostname to it, and the Settings "revoke" button
-// (src/popup/views/settings.js) filters a hostname out of it in place, from a
+// approved/denied origin to it, and the Settings "revoke" button
+// (src/popup/views/settings.js) filters an origin out of it in place, from a
 // different page. Merge it the same way wallets are merged: identity is the
-// hostname itself, so a merged pair is always equal and mergeItem is a no-op
+// origin itself, so a merged pair is always equal and mergeItem is a no-op
 // pick.
-function mergeHostnameList(base, ours, theirs) {
+function mergeOriginList(base, ours, theirs) {
     return mergeListByIdentity(
         base,
         ours,
         theirs,
-        (hostname) => hostname,
+        (origin) => origin,
         (b, o, t) => t,
     );
 }
 
 function mergeSiteMap(base, ours, theirs) {
-    return mergeMapByKey(base, ours, theirs, mergeHostnameList);
+    return mergeMapByKey(base, ours, theirs, mergeOriginList);
 }
 
 // networkEndpoints: { [networkId]: {rpcUrl, blockscoutUrl} }.
@@ -422,8 +422,8 @@ function mergeNetworkEndpoints(base, ours, theirs) {
 // address) apply independently instead of colliding as the same field.
 //
 // `allowedSites` and `deniedSites` get the same treatment (mergeSiteMap(),
-// by address key and then by hostname within each address's list), for the
-// identical reason: the background appends a newly approved/denied hostname
+// by address key and then by origin within each address's list), for the
+// identical reason: the background appends a newly approved/denied origin
 // to them, and the Settings "revoke" button (src/popup/views/settings.js)
 // filters one out in place, from a different page. A whole-field diff here
 // doesn't just lose data, it is a security defect — a stale page's save can