Let the in-play Scripts panel show each script's code

The panel only showed a name + on/off toggle, so demo (server-owned)
scripts — which never appear on the personal Scripts page — had no
in-app way to inspect their code. AdventureScriptOut already ships the
hook sources, so add a "View code" expander that renders the non-empty
hooks (library / onInput / onModelContext / onOutput) read-only.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TEpWMjnfPqzZ13nPMoGhs5

frontend/src/index.css

@@ -440,6 +440,45 @@ button:disabled { opacity: 0.45; cursor: default; transform: none; box-shadow: n
   animation: panel-in 0.25s ease both;
 }
 
+/* ---------- In-play script viewer ---------- */
+
+.adv-script {
+  border-bottom: 1px solid var(--border);
+  padding: 10px 0;
+}
+.adv-script-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
+.adv-script-desc { font-size: 0.82rem; margin-top: 4px; }
+.linklike {
+  border: none;
+  background: none;
+  padding: 0;
+  color: var(--accent-bright);
+  font-size: 0.8rem;
+  cursor: pointer;
+  flex-shrink: 0;
+}
+.linklike:hover { text-decoration: underline; }
+.adv-script-code { margin-top: 8px; }
+.adv-script-hook {
+  font-size: 0.72rem;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: var(--text-dim);
+  margin: 8px 0 2px;
+}
+.adv-script-code pre {
+  margin: 0;
+  padding: 10px;
+  background: var(--bg-input);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  overflow-x: auto;
+  font-family: var(--font-mono, monospace);
+  font-size: 0.76rem;
+  line-height: 1.5;
+  white-space: pre;
+}
+
 /* ---------- Left status drawer (script state) ---------- */
 
 .status-drawer {

frontend/src/pages/Play.jsx

@@ -283,8 +283,16 @@ function MemoryPanel({ adventure, setAdventure, refreshKey }) {
   )
 }
 
+const SCRIPT_HOOKS = [
+  ['Shared library', 'library_js'],
+  ['onInput', 'input_js'],
+  ['onModelContext', 'context_js'],
+  ['onOutput', 'output_js'],
+]
+
 function ScriptsPanel({ advId }) {
   const [scripts, setScripts] = useState(null)
+  const [openId, setOpenId] = useState(null)
 
   useEffect(() => {
     api.listAdventureScripts(advId).then(setScripts).catch(() => setScripts([]))
@@ -306,13 +314,38 @@ function ScriptsPanel({ advId }) {
   }
   return (
     <div>
-      {scripts.map((s) => (
-        <label key={s.id} className="script-attach">
-          <input type="checkbox" checked={s.enabled} onChange={() => toggle(s)} />
-          <span>{s.name}</span>
-          <span className="dim">{s.description}</span>
-        </label>
-      ))}
+      {scripts.map((s) => {
+        const hooks = SCRIPT_HOOKS.filter(([, f]) => (s[f] || '').trim())
+        const open = openId === s.id
+        return (
+          <div key={s.id} className="adv-script">
+            <div className="adv-script-head">
+              <label className="script-attach" style={{ margin: 0 }}>
+                <input type="checkbox" checked={s.enabled} onChange={() => toggle(s)} />
+                <span>{s.name}</span>
+              </label>
+              <button className="linklike" onClick={() => setOpenId(open ? null : s.id)}>
+                {open ? 'Hide code' : 'View code'}
+              </button>
+            </div>
+            {s.description && <div className="dim adv-script-desc">{s.description}</div>}
+            {open && (
+              <div className="adv-script-code">
+                {hooks.length === 0 ? (
+                  <div className="empty">This script has no code.</div>
+                ) : (
+                  hooks.map(([label, f]) => (
+                    <div key={f}>
+                      <div className="adv-script-hook">{label}</div>
+                      <pre>{s[f]}</pre>
+                    </div>
+                  ))
+                )}
+              </div>
+            )}
+          </div>
+        )
+      })}
     </div>
   )
 }