diff --git a/media/preview.css b/media/preview.css
index 0e10047..87aeb9e 100644
--- a/media/preview.css
+++ b/media/preview.css
@@ -56,14 +56,26 @@ pre.mermaid[data-cw-error] { color: var(--vscode-errorForeground); }
 .cw-by-claude { background: var(--vscode-editorInfo-foreground, rgba(64, 120, 242, 0.18)); text-decoration: none; }
 .cw-by-human { background: var(--vscode-gitDecoration-addedResourceForeground, rgba(46, 160, 67, 0.18)); text-decoration: none; }
 .cw-blk.cw-by-claude, .cw-blk.cw-by-human, .cw-blk.cw-mixed { outline: 2px solid currentColor; outline-offset: 2px; background: transparent; }
-.cw-seg {
-  background: transparent; color: var(--vscode-foreground);
-  border: 1px solid var(--vscode-panel-border); padding: 0 0.5em; cursor: pointer; font-size: 0.9em;
-}
-.cw-seg:first-child { border-radius: 3px 0 0 3px; }
-.cw-seg:last-child { border-radius: 0 3px 3px 0; border-left: none; }
-.cw-seg-on { background: var(--vscode-button-background); color: var(--vscode-button-foreground); }
 #cw-legend .cw-swatch { padding: 0 0.4em; border-radius: 3px; }
+#cw-summary .cw-prop { opacity: 0.85; }
+
+/* F10 interactive review — annotations toggle + ✓/✗ proposal blocks. */
+#cw-toggle { display: inline-flex; align-items: center; gap: 0.35em; cursor: pointer; }
+.cw-proposal {
+  position: relative;
+  border-left: 3px solid var(--vscode-charts-blue, #4daafc);
+  background: color-mix(in srgb, var(--vscode-charts-blue, #4daafc) 12%, transparent);
+  padding: 0.4em 0.6em; margin: 0.4em 0; border-radius: 3px;
+}
+.cw-proposal-unanchored { border-left-style: dashed; opacity: 0.85; }
+.cw-actions { position: absolute; top: 0.2em; right: 0.4em; display: inline-flex; gap: 0.25em; }
+.cw-actions button {
+  cursor: pointer; border: 1px solid var(--vscode-button-border, transparent);
+  border-radius: 3px; font-size: 0.9em; line-height: 1; padding: 0.1em 0.35em;
+  background: var(--vscode-button-secondaryBackground); color: var(--vscode-button-secondaryForeground);
+}
+.cw-accept:hover { background: var(--vscode-testing-iconPassed, #2ea043); color: #fff; }
+.cw-reject:hover { background: var(--vscode-errorForeground, #f14c4c); color: #fff; }
 
 /* F7.1 (#22) intra-diagram mermaid diff legend. */
 .cw-mermaid-legend { display: flex; gap: 0.6rem; font-size: 0.75em; opacity: 0.85; margin: 0.2rem 0 0.6rem; }
diff --git a/media/preview.ts b/media/preview.ts
index 4492857..d4e58c7 100644
--- a/media/preview.ts
+++ b/media/preview.ts
@@ -14,11 +14,10 @@ declare function acquireVsCodeApi(): { postMessage(m: unknown): void };
 
 interface RenderMessage {
   type: "render";
-  mode: "changes" | "authorship";
+  mode: "on" | "off";
   html: string;
   epoch?: string;
-  summary?: { added: number; removed: number; changed: number };
-  legend?: { claude: boolean; human: boolean };
+  summary?: { added: number; removed: number; proposals: number };
 }
 
 const vscodeApi = acquireVsCodeApi();
@@ -26,13 +25,24 @@ const body = document.getElementById("cw-body")!;
 const header = document.getElementById("cw-epoch")!;
 const summary = document.getElementById("cw-summary")!;
 const legend = document.getElementById("cw-legend")!;
-const segs = Array.from(document.querySelectorAll<HTMLButtonElement>(".cw-seg"));
+const annotationsEl = document.getElementById("cw-annotations") as HTMLInputElement | null;
 
-for (const seg of segs) {
-  seg.addEventListener("click", () => {
-    vscodeApi.postMessage({ type: "setMode", mode: seg.dataset.mode });
-  });
-}
+// F10: the annotations on/off toggle.
+annotationsEl?.addEventListener("change", () => {
+  vscodeApi.postMessage({ type: "setMode", mode: annotationsEl.checked ? "on" : "off" });
+});
+
+// F10: delegated ✓/✗ accept/reject of pending proposals (routed back to the F4 seam).
+body.addEventListener("click", (e) => {
+  const btn = (e.target as HTMLElement)?.closest<HTMLElement>(".cw-actions button");
+  if (!btn) return;
+  const block = btn.closest<HTMLElement>(".cw-proposal");
+  const id = block?.dataset.proposalId;
+  const action = btn.dataset.action;
+  if (id && (action === "accept" || action === "reject")) {
+    vscodeApi.postMessage({ type: action, proposalId: id });
+  }
+});
 
 function themeFor(): "dark" | "default" {
   return document.body.classList.contains("vscode-dark") ||
@@ -59,21 +69,18 @@ window.addEventListener("message", (event: MessageEvent<RenderMessage>) => {
   const msg = event.data;
   if (msg?.type !== "render") return;
   body.innerHTML = msg.html;
-  for (const seg of segs) seg.classList.toggle("cw-seg-on", seg.dataset.mode === msg.mode);
-  const authorship = msg.mode === "authorship";
-  header.hidden = authorship;
-  summary.hidden = authorship;
-  legend.hidden = !authorship;
-  if (authorship) {
-    const parts: string[] = [];
-    if (msg.legend?.claude) parts.push('<span class="cw-by-claude cw-swatch">Claude</span>');
-    if (msg.legend?.human) parts.push('<span class="cw-by-human cw-swatch">You</span>');
-    legend.innerHTML = parts.join(" ") || "no attribution yet";
-  } else {
-    header.textContent = `Track changes since ${msg.epoch ?? ""}`;
+  const on = msg.mode === "on";
+  if (annotationsEl) annotationsEl.checked = on;
+  // Off-state is a clean preview: hide the review chrome.
+  header.hidden = !on;
+  summary.hidden = !on;
+  legend.hidden = true;
+  if (on) {
+    header.textContent = `Review since ${msg.epoch ?? ""}`;
     summary.innerHTML =
-      `<span class="cw-add">+${(msg.summary?.added ?? 0) + (msg.summary?.changed ?? 0)}</span> ` +
-      `<span class="cw-del">−${(msg.summary?.removed ?? 0) + (msg.summary?.changed ?? 0)}</span>`;
+      `<span class="cw-add">+${msg.summary?.added ?? 0}</span> ` +
+      `<span class="cw-del">−${msg.summary?.removed ?? 0}</span> ` +
+      `<span class="cw-prop">${msg.summary?.proposals ?? 0} proposal${(msg.summary?.proposals ?? 0) === 1 ? "" : "s"}</span>`;
   }
   void renderMermaid();
 });