feat: life-script AI 运行时和视图优化

life-script/src/services/aiRuntime.js

@@ -18,6 +18,33 @@ const parseSseFrame = (frame) => {
   }
 };
 
+const findOverlapLength = (current, next) => {
+  const max = Math.min(current.length, next.length);
+  for (let size = max; size > 0; size -= 1) {
+    if (current.slice(-size) === next.slice(0, size)) return size;
+  }
+  return 0;
+};
+
+const mergeStreamOutput = (current, chunk) => {
+  const next = String(chunk || '');
+  if (!next) return { output: current, delta: '' };
+  if (!current) return { output: next, delta: next };
+  if (next === current) return { output: current, delta: '' };
+  if (next.length >= 16 && current.endsWith(next)) return { output: current, delta: '' };
+  if (next.startsWith(current)) {
+    return { output: next, delta: next.slice(current.length) };
+  }
+  const currentIndex = next.length > current.length ? next.indexOf(current) : -1;
+  if (currentIndex >= 0) {
+    return { output: next, delta: next.slice(currentIndex + current.length) };
+  }
+  const overlap = findOverlapLength(current, next);
+  if (overlap < 8) return { output: current + next, delta: next };
+  const delta = next.slice(overlap);
+  return { output: current + delta, delta };
+};
+
 const authHeaders = () => {
   const token = localStorage.getItem('access_token');
   return token ? { Authorization: `Bearer ${token}` } : {};
@@ -73,6 +100,7 @@ export const streamAiScene = async ({
   let output = '';
   let closed = false;
   let recovered = false;
+  let streamStarted = false;
   let recoveryTimer;
   let recoveryPromise;
 
@@ -92,6 +120,7 @@ export const streamAiScene = async ({
 
   const completeFromRecoveredOutput = async () => {
     if (closed) return;
+    if (streamStarted || output.trim()) return;
     try {
       const recoveredOutput = await recoverOnce();
       if (closed) return;
@@ -107,7 +136,7 @@ export const streamAiScene = async ({
 
   recoveryTimer = setTimeout(() => {
     completeFromRecoveredOutput();
-  }, 8000);
+  }, 25000);
 
   const finishRecovered = (event, message) => {
     if (!output.trim()) return false;
@@ -127,13 +156,13 @@ export const streamAiScene = async ({
   };
 
   const recoverOrThrow = async (message, event) => {
-    if (finishRecovered(event, message)) return;
     try {
       output = await recoverOnce();
       recovered = true;
       closed = true;
       clearRecoveryTimer();
     } catch (error) {
+      if (finishRecovered(event, message || error?.message)) return;
       const finalMessage = message || error?.message || 'AI 生成结果暂时没有返回';
       onError?.(finalMessage, event);
       throw new Error(finalMessage);
@@ -148,12 +177,19 @@ export const streamAiScene = async ({
       const event = parseSseFrame(frame);
       if (!event) return;
       if (event.type === 'start') {
+        streamStarted = true;
+        clearRecoveryTimer();
         onStart?.(event);
       } else if (event.type === 'delta') {
-        const delta = event.content || '';
-        output += delta;
-        onDelta?.(delta, output, event);
+        streamStarted = true;
+        clearRecoveryTimer();
+        const merged = mergeStreamOutput(output, event.content);
+        output = merged.output;
+        if (merged.delta) {
+          onDelta?.(merged.delta, output, event);
+        }
       } else if (event.type === 'done') {
+        streamStarted = true;
         closed = true;
         clearRecoveryTimer();
         onDone?.(event, output);
@@ -191,6 +227,8 @@ export const streamAiScene = async ({
     while (true) {
       const { value, done } = await reader.read();
       if (done) break;
+      streamStarted = true;
+      clearRecoveryTimer();
       consumeText(decoder.decode(value, { stream: true }));
       if (closed || recovered) break;
     }

life-script/src/views/PathView.jsx

@@ -18,7 +18,7 @@ const PathView = ({ onGoToScript }) => {
   const [isLoading, setIsLoading] = useState(false);
   const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
   const [streamPath, setStreamPath] = useState('');
-  const pathWriter = useTypewriterStream({ interval: 18, step: 1 });
+  const pathWriter = useTypewriterStream({ interval: 30, step: 1 });
 
   const selectedScript = getSelectedScript();
 

life-script/src/views/ScriptView.jsx

@@ -40,7 +40,7 @@ const ScriptView = ({ onOpenProfile }) => {
   const [length, setLength] = useState(scriptLengths[0].value);
   const [isLoading, setIsLoading] = useState(false);
   const [streamContent, setStreamContent] = useState('');
-  const scriptWriter = useTypewriterStream({ interval: 18, step: 1 });
+  const scriptWriter = useTypewriterStream({ interval: 30, step: 1 });
 
   // 编辑模态框状态
   const [isEditModalOpen, setIsEditModalOpen] = useState(false);

life-script/src/views/TimelineView.jsx

@@ -94,7 +94,7 @@ const TimelineView = () => {
   const [isModalOpen, setIsModalOpen] = useState(false);
   const [isLoading, setIsLoading] = useState(false);
   const [streamFeedback, setStreamFeedback] = useState('');
-  const feedbackWriter = useTypewriterStream({ interval: 18, step: 1 });
+  const feedbackWriter = useTypewriterStream({ interval: 30, step: 1 });
 
   // 编辑模式状态：null 表示新增模式，有值表示编辑模式（存储事件 ID）
   const [editingEventId, setEditingEventId] = useState(null);