diff --git a/.github/workflows/pr-agent.yml b/.github/workflows/pr-agent.yml
index 39d0509..afe8df4 100644
--- a/.github/workflows/pr-agent.yml
+++ b/.github/workflows/pr-agent.yml
@@ -11,7 +11,9 @@ jobs:
     if: >
       github.event_name == 'pull_request' ||
       (github.event_name == 'issue_comment' &&
-       startsWith(github.event.comment.body, '/'))
+       github.event.issue.pull_request &&
+       startsWith(github.event.comment.body, '/') &&
+       contains(fromJSON('["OWNER","MEMBER","COLLABORATOR"]'), github.event.comment.author_association))
     runs-on: ubuntu-latest
     permissions:
       issues: write
@@ -36,7 +38,9 @@ jobs:
     if: >
       github.event_name == 'pull_request' ||
       (github.event_name == 'issue_comment' &&
-       startsWith(github.event.comment.body, '/'))
+       github.event.issue.pull_request &&
+       startsWith(github.event.comment.body, '/') &&
+       contains(fromJSON('["OWNER","MEMBER","COLLABORATOR"]'), github.event.comment.author_association))
     runs-on: ubuntu-latest
     permissions:
       issues: write
diff --git a/app/api/gallery-pack/route.ts b/app/api/gallery-pack/route.ts
index 9fd5667..818b65e 100644
--- a/app/api/gallery-pack/route.ts
+++ b/app/api/gallery-pack/route.ts
@@ -27,7 +27,7 @@ export async function POST(req: Request): Promise<Response> {
     return Response.json({ error: "Bad JSON" }, { status: 400 });
   }
 
-  if (docStr.length > MAX_DOC_BYTES) {
+  if (new TextEncoder().encode(docStr).byteLength > MAX_DOC_BYTES) {
     return Response.json(
       { error: "图集数据太大,无法打包分享" },
       { status: 413 },
diff --git a/app/play/page.tsx b/app/play/page.tsx
index 66a8a48..0787ab4 100644
--- a/app/play/page.tsx
+++ b/app/play/page.tsx
@@ -1171,7 +1171,10 @@ function PlayInner() {
             if (sessionOrientation === "portrait") {
               console.warn(`[play] portrait firstact missing for ${cardName} (HTTP ${r.status}), falling back to landscape`);
               const fb = await fetch(`/home/firstact/${encodeURIComponent(cardName)}.json`);
-              if (fb.ok) return (await fb.json()) as PrebakedFirstAct;
+              if (fb.ok) {
+                const fallback = (await fb.json()) as PrebakedFirstAct;
+                return { ...fallback, scene: { ...fallback.scene, orientation: "landscape" as const } };
+              }
             }
             throw new Error(`找不到精选剧情：${cardName}`);
           },
@@ -1500,10 +1503,12 @@ function PlayInner() {
           ...currentScene,
           beats: [...currentScene.beats, newBeat],
         };
+        const nextVisited = [...visitedBeatsRef.current, newBeatId];
+        visitedBeatsRef.current = nextVisited;
         const nextSession: Session = {
           ...session,
           history: session.history.map((h, i, arr) =>
-            i === arr.length - 1 ? { ...h, scene: patched } : h,
+            i === arr.length - 1 ? { ...h, scene: patched, visitedBeatIds: nextVisited } : h,
           ),
           characters: mergeCharactersPreserveVoice(
             session.characters,
diff --git a/components/SettingsModal.tsx b/components/SettingsModal.tsx
index 14b832e..607a872 100644
--- a/components/SettingsModal.tsx
+++ b/components/SettingsModal.tsx
@@ -100,10 +100,9 @@ export function SettingsModal({
       const presetId = keyType === "payg" ? PAYG_PRESET_ID : regionId;
       writeStoredTtsConfig({ presetId, apiKey: key });
       ttsConfigured = true;
-    } else if (!ttsAlreadyConfigured) {
-      ttsConfigured = false;
     } else {
-      ttsConfigured = true;
+      clearStoredTtsConfig();
+      ttsConfigured = false;
     }
 
     onSaved({ ttsConfigured, playerName: name, visionClickEnabled: visionClick });
diff --git a/lib/engine/agents/styleSelector.ts b/lib/engine/agents/styleSelector.ts
index abacf8c..647437d 100644
--- a/lib/engine/agents/styleSelector.ts
+++ b/lib/engine/agents/styleSelector.ts
@@ -28,7 +28,9 @@ export async function selectStyle(
   if (STYLE_MAP[picked]) {
     return STYLE_MAP[picked];
   }
-  const fuzzy = STYLE_NAMES.find((s) => picked.includes(s) || s.includes(picked));
+  const fuzzy = picked
+    ? STYLE_NAMES.find((s) => picked.includes(s) || s.includes(picked))
+    : undefined;
   if (fuzzy) {
     return STYLE_MAP[fuzzy]!;
   }