feat(editor): console copy button + collapsible DOM-floor console + one blue family

The first prod blue screen (finally!) also surfaced the console UX gaps: the
in-app log had to be hand-copied (and arrived truncated — the flight-recorder
dump missing), and the DOM-floor screen's log was a fixed block.

- React console: a copy button beside the toggle (writes the full log to the
  clipboard, confirms in the log); stays collapsible on a fatal as in normal
  editing.
- DOM-floor screen: its console mirrors the editor one — toggle bar
  (▾/▸ console) + copy, collapsible — and its content is ring + trace dump.
- One blue family: both fatal screens now use the boot overlay's #1a1a2e, so
  every full-screen state (boot, consent, fatal, floor) is coherent.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019SE4o46Lnq3hF574FFq8x4

web/standalone/src/components/WasmTool.tsx

@@ -2373,7 +2373,7 @@ export function WasmTool({
       {fatal && (
         <div
           data-testid="fatal-overlay"
-          className="absolute inset-0 z-[35] flex flex-col items-center justify-center gap-3 bg-[#1e3a8a] text-white"
+          className="absolute inset-0 z-[35] flex flex-col items-center justify-center gap-3 bg-[#1a1a2e] text-white"
         >
           <p className="font-mono text-4xl text-white/90">:(</p>
           <p className="font-mono text-sm text-white">
@@ -2403,13 +2403,28 @@ export function WasmTool({
           visible on a fatal even with chrome hidden, for the same reason. */}
       {(!effectiveChromeHidden || fatal) && (
         <div className="absolute bottom-0 left-0 right-0 z-40">
-          <button
-            className="flex items-center gap-1 bg-black/70 px-3 py-1 font-mono text-xs text-white"
-            onClick={() => setShowLog((s) => !s)}
-          >
-            {showLog ? <ChevronDown size={14} /> : <ChevronUp size={14} />} console
-            ({logs.length})
-          </button>
+          <div className="flex items-center bg-black/70">
+            <button
+              className="flex items-center gap-1 px-3 py-1 font-mono text-xs text-white"
+              onClick={() => setShowLog((s) => !s)}
+            >
+              {showLog ? <ChevronDown size={14} /> : <ChevronUp size={14} />} console
+              ({logs.length})
+            </button>
+            {showLog && (
+              <button
+                className="ml-auto px-3 py-1 font-mono text-xs text-white/70 hover:text-white"
+                onClick={() => {
+                  void navigator.clipboard.writeText(logs.join("\n")).then(
+                    () => append("[console] copied to clipboard"),
+                    () => append("[console] clipboard copy failed"),
+                  );
+                }}
+              >
+                copy
+              </button>
+            )}
+          </div>
           {showLog && (
             <pre className="max-h-64 overflow-auto bg-black/85 p-3 font-mono text-[11px] leading-tight text-green-300">
               {logs.join("\n")}

web/standalone/src/wasm/fatal-screen.ts

@@ -36,8 +36,10 @@ function buildDom(): void {
   const root = doc.createElement("div");
   root.id = "pcbjam-fatal-screen";
   root.setAttribute("data-testid", "fatal-screen-dom");
+  // Same blue as the boot overlay / React fatal screen (#1a1a2e) — one
+  // coherent family across every full-screen state.
   root.style.cssText =
-    "position:fixed;inset:0;z-index:2147483000;background:#1e3a8a;color:#fff;" +
+    "position:fixed;inset:0;z-index:2147483000;background:#1a1a2e;color:#fff;" +
     "display:flex;flex-direction:column;align-items:center;justify-content:center;" +
     "gap:12px;font-family:ui-monospace,Menlo,monospace;padding:24px;box-sizing:border-box;";
 
@@ -67,14 +69,48 @@ function buildDom(): void {
     "padding:4px 14px;font-size:12px;cursor:pointer;font-family:inherit;";
   reload.onclick = () => window.location.reload();
 
+  // Console block mirroring the in-editor one: toggle bar + copy, collapsible.
+  const consoleWrap = doc.createElement("div");
+  consoleWrap.style.cssText = "position:absolute;bottom:0;left:0;right:0;text-align:left;";
+
+  const bar = doc.createElement("div");
+  bar.style.cssText =
+    "display:flex;align-items:center;background:#000000b3;font-size:11px;";
+
+  const logText = () => [...ring, "", dump()].join("\n");
+
+  const toggle = doc.createElement("button");
+  toggle.textContent = "▾ console";
+  toggle.style.cssText =
+    "border:0;background:transparent;color:#fff;padding:4px 12px;cursor:pointer;font:inherit;";
+
+  const copy = doc.createElement("button");
+  copy.textContent = "copy";
+  copy.style.cssText =
+    "border:0;background:transparent;color:#ffffffb3;padding:4px 12px;cursor:pointer;" +
+    "font:inherit;margin-left:auto;";
+  copy.onclick = () => {
+    navigator.clipboard.writeText(logText()).then(
+      () => { copy.textContent = "copied ✓"; },
+      () => { copy.textContent = "copy failed"; },
+    );
+  };
+
   const log = doc.createElement("pre");
   log.style.cssText =
-    "position:absolute;bottom:0;left:0;right:0;max-height:38vh;overflow:auto;" +
-    "margin:0;padding:10px 12px;background:#000000d9;color:#86efac;" +
-    "font-size:11px;line-height:1.35;text-align:left;";
-  log.textContent = [...ring, "", dump()].join("\n");
+    "max-height:38vh;overflow:auto;margin:0;padding:10px 12px;background:#000000d9;" +
+    "color:#86efac;font-size:11px;line-height:1.35;";
+  log.textContent = logText();
 
-  root.append(face, title, err, hint, reload, log);
+  toggle.onclick = () => {
+    const hidden = log.style.display === "none";
+    log.style.display = hidden ? "" : "none";
+    toggle.textContent = hidden ? "▾ console" : "▸ console";
+  };
+
+  bar.append(toggle, copy);
+  consoleWrap.append(bar, log);
+  root.append(face, title, err, hint, reload, consoleWrap);
   doc.body.appendChild(root);
 }