Add site connection permissions, approval flow, and active address

- Add activeAddress, allowedSites, deniedSites, rememberSiteChoice to
  persisted state
- Replace auto-connect with permission checks: allowed sites connect
  automatically, denied sites are rejected, unknown sites trigger an
  approval popup
- Add approval popup UI with hostname display, active address preview,
  remember checkbox, and allow/deny buttons
- Add ACTIVE/[select] indicator on address rows in the main view to
  set the active web3 address
- Add allowed/denied site list management in settings with delete buttons
- Broadcast accountsChanged to connected dapps when active address changes
- Handle approval window close as implicit denial

src/popup/views/settings.js

@@ -3,6 +3,44 @@ const { state, saveState } = require("../../shared/state");
 const { ETHEREUM_MAINNET_CHAIN_ID } = require("../../shared/constants");
 const { log } = require("../../shared/log");
 
+const runtime =
+    typeof browser !== "undefined" ? browser.runtime : chrome.runtime;
+
+function renderSiteList(containerId, list, stateKey) {
+    const container = $(containerId);
+    if (list.length === 0) {
+        container.innerHTML = '<p class="text-xs text-muted">None</p>';
+        return;
+    }
+    let html = "";
+    list.forEach((hostname, i) => {
+        html += `<div class="flex justify-between items-center text-xs py-1 border-b border-border-light">`;
+        html += `<span>${hostname}</span>`;
+        html += `<button class="btn-remove-site border border-border px-1 hover:bg-fg hover:text-bg cursor-pointer" data-key="${stateKey}" data-index="${i}">[x]</button>`;
+        html += `</div>`;
+    });
+    container.innerHTML = html;
+    container.querySelectorAll(".btn-remove-site").forEach((btn) => {
+        btn.addEventListener("click", async () => {
+            const key = btn.dataset.key;
+            const idx = parseInt(btn.dataset.index, 10);
+            state[key].splice(idx, 1);
+            await saveState();
+            runtime.sendMessage({ type: "AUTISTMASK_REMOVE_SITE" });
+            renderSiteList(containerId, state[key], key);
+        });
+    });
+}
+
+function renderSiteLists() {
+    renderSiteList(
+        "settings-allowed-sites",
+        state.allowedSites,
+        "allowedSites",
+    );
+    renderSiteList("settings-denied-sites", state.deniedSites, "deniedSites");
+}
+
 function init(ctx) {
     $("btn-save-rpc").addEventListener("click", async () => {
         const url = $("settings-rpc").value.trim();
@@ -77,4 +115,4 @@ function init(ctx) {
     });
 }
 
-module.exports = { init };
+module.exports = { init, renderSiteLists };