fix(web-clipper): bouton rond transparent draggable + toggle affichage + refresh auto sidebar + fix bloc bookmark (v6.2.1)

- bouton flottant rond (44px), semi-transparent blur, hover plus fonce, deplacable souris (pos persistee storage)
- option afficher/cacher dans popup extension (showButton)
- clipper: notification instantanee des onglets FlowDeck via tabs.sendMessage + polling 15s + BroadcastChannel + visibilitychange
- fix bookmark template literal '+title+' -> \/\/\/\/\ (_page_editor_scripts.html)
- sync static/extension + zip

extension/popup.js

@@ -5,19 +5,36 @@ async function load() {
   const cfg = await chrome.runtime.sendMessage({ action: "getConfig" });
   $("serverUrl").value = cfg.serverUrl || "http://localhost:8080";
   $("token").value = cfg.token || "";
+  const sb = $("showButton");
+  if (sb) sb.checked = cfg.showButton !== false;
 }
 
 async function save() {
   const serverUrl = $("serverUrl").value.trim() || "http://localhost:8080";
   const token = $("token").value.trim();
-  // deviceId preserved
+  const showButton = $("showButton") ? $("showButton").checked : true;
   const cfg = await chrome.runtime.sendMessage({ action: "getConfig" });
   cfg.serverUrl = serverUrl.replace(/\/$/, "");
   cfg.token = token;
+  cfg.showButton = showButton;
   await chrome.runtime.sendMessage({ action: "setConfig", config: cfg });
   show("Saved ✓", "ok");
 }
 
+async function toggleButton(show) {
+  const cfg = await chrome.runtime.sendMessage({ action: "getConfig" });
+  cfg.showButton = show;
+  await chrome.runtime.sendMessage({ action: "setConfig", config: cfg });
+  // Notify all tabs immediately for instant UX
+  try {
+    const tabs = await chrome.tabs.query({});
+    for (const t of tabs) {
+      if (!t.id) continue;
+      chrome.tabs.sendMessage(t.id, { action: "toggleButton", show }).catch(() => {});
+    }
+  } catch (_e) {}
+}
+
 async function verify() {
   await save();
   const res = await chrome.runtime.sendMessage({ action: "auth" });
@@ -72,5 +89,7 @@ $("clipBookmark").addEventListener("click", () => doClip("bookmark"));
 $("clipSelection").addEventListener("click", () => doClip("selection"));
 $("openFlowDeck").addEventListener("click", (e) => { e.preventDefault(); chrome.tabs.create({ url: $("serverUrl").value || "http://localhost:8080" }); });
 $("openExtensions").addEventListener("click", (e) => { e.preventDefault(); chrome.tabs.create({ url: ($("serverUrl").value || "http://localhost:8080") + "/extensions" }); });
+const _sb = $("showButton");
+if (_sb) _sb.addEventListener("change", (e) => toggleButton(e.target.checked));
 
 load();