fix: move puzzle next level source selection server side

src/components/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -23,7 +23,6 @@ import type {
   PuzzleAgentActionRequest,
   PuzzleAgentOperationRecord,
 } from '../../../packages/shared/src/contracts/puzzleAgentActions';
-import type { PuzzleGeneratedImageCandidate } from '../../../packages/shared/src/contracts/puzzleAgentDraft';
 import type {
   PuzzleAgentSessionSnapshot,
   SendPuzzleAgentMessageRequest,
@@ -68,13 +67,9 @@ import {
   getPuzzleAgentSession,
   streamPuzzleAgentMessage,
 } from '../../services/puzzle-agent';
+import { getPuzzleGalleryDetail } from '../../services/puzzle-gallery';
+import { advanceLocalPuzzleNextLevel } from '../../services/puzzle-runtime';
 import {
-  getPuzzleGalleryDetail,
-  listPuzzleGallery,
-} from '../../services/puzzle-gallery';
-import {
-  advanceLocalPuzzleLevel,
-  advanceLocalPuzzleLevelWithWork,
   dragLocalPuzzlePiece,
   startLocalPuzzleRun,
   swapLocalPuzzlePieces,
@@ -114,53 +109,6 @@ type AgentResultPublishGateView = {
   publishReady: boolean;
 };
 
-function buildPuzzleCandidateWorkSummary(
-  candidate: PuzzleGeneratedImageCandidate,
-  session: PuzzleAgentSessionSnapshot,
-  levelIndex: number,
-): PuzzleWorkSummary {
-  const draft = session.draft;
-  const nowIso = new Date().toISOString();
-  return {
-    workId: `${session.sessionId}-${candidate.candidateId}-level-${levelIndex}-runtime-work`,
-    profileId: `${session.sessionId}-${candidate.candidateId}-level-${levelIndex}-runtime-profile`,
-    ownerUserId: 'local-runtime',
-    sourceSessionId: session.sessionId,
-    authorDisplayName: '当前草稿',
-    levelName: draft?.levelName
-      ? `${draft.levelName} · 候选 ${levelIndex}`
-      : `候选拼图 ${levelIndex}`,
-    summary: draft?.summary ?? candidate.prompt,
-    themeTags: draft?.themeTags ?? [],
-    coverImageSrc: candidate.imageSrc,
-    coverAssetId: candidate.assetId,
-    publicationStatus: 'published',
-    updatedAt: nowIso,
-    publishedAt: nowIso,
-    playCount: 0,
-    publishReady: true,
-  };
-}
-
-function pickPuzzleCandidateForLevel(
-  candidates: PuzzleGeneratedImageCandidate[],
-  playedProfileIds: string[],
-) {
-  return candidates.find(
-    (candidate) =>
-      candidate.imageSrc &&
-      !playedProfileIds.some((profileId) =>
-        profileId.includes(candidate.candidateId),
-      ),
-  );
-}
-
-function pickFreshGeneratedPuzzleCandidate(
-  candidates: PuzzleGeneratedImageCandidate[],
-) {
-  return candidates.find((candidate) => candidate.imageSrc);
-}
-
 type AgentResultBlockerView = {
   code?: string;
   message: string;
@@ -1226,104 +1174,16 @@ export function PlatformEntryFlowShellImpl({
     }
 
     setIsPuzzleBusy(true);
+    setIsPuzzleNextLevelGenerating(true);
     setPuzzleError(null);
 
     try {
-      const galleryResponse = await listPuzzleGallery();
-      setPuzzleWorks(galleryResponse.items);
-      const galleryNext = galleryResponse.items.find(
-        (item) =>
-          item.publicationStatus === 'published' &&
-          item.coverImageSrc &&
-          !puzzleRun.playedProfileIds.includes(item.profileId),
-      );
-      if (galleryNext) {
-        const { item } = await getPuzzleGalleryDetail(galleryNext.profileId);
-        setSelectedPuzzleDetail(item);
-        setPuzzleRun(advanceLocalPuzzleLevelWithWork(puzzleRun, item));
-        return;
-      }
-
-      const existingCandidate = pickPuzzleCandidateForLevel(
-        puzzleSession?.draft?.candidates ?? [],
-        puzzleRun.playedProfileIds,
-      );
-      if (existingCandidate && puzzleSession) {
-        setPuzzleRun(
-          advanceLocalPuzzleLevelWithWork(
-            puzzleRun,
-            buildPuzzleCandidateWorkSummary(
-              existingCandidate,
-              puzzleSession,
-              puzzleRun.currentLevelIndex + 1,
-            ),
-          ),
-        );
-        return;
-      }
-
-      if (!puzzleSession?.draft) {
-        const sourceSessionId = selectedPuzzleDetail?.sourceSessionId?.trim();
-        if (sourceSessionId) {
-          const { session } = await getPuzzleAgentSession(sourceSessionId);
-          setPuzzleSession(session);
-          if (session.draft) {
-            setIsPuzzleNextLevelGenerating(true);
-            const response = await executePuzzleAgentAction(session.sessionId, {
-              action: 'generate_puzzle_images',
-              candidateCount: 2,
-            });
-            setPuzzleOperation(response.operation);
-            setPuzzleSession(response.session);
-            const sourceSessionCandidate = pickPuzzleCandidateForLevel(
-              response.session.draft?.candidates ?? [],
-              puzzleRun.playedProfileIds,
-            );
-            if (sourceSessionCandidate) {
-              setPuzzleRun(
-                advanceLocalPuzzleLevelWithWork(
-                  puzzleRun,
-                  buildPuzzleCandidateWorkSummary(
-                    sourceSessionCandidate,
-                    response.session,
-                    puzzleRun.currentLevelIndex + 1,
-                  ),
-                ),
-              );
-              return;
-            }
-          }
-        }
-        throw new Error('当前拼图缺少可用于生成下一关的草稿会话。');
-      }
-
-      setIsPuzzleNextLevelGenerating(true);
-      const response = await executePuzzleAgentAction(puzzleSession.sessionId, {
-        action: 'generate_puzzle_images',
-        candidateCount: 2,
+      const { run } = await advanceLocalPuzzleNextLevel({
+        run: puzzleRun,
+        sourceSessionId:
+          selectedPuzzleDetail?.sourceSessionId ?? puzzleSession?.sessionId ?? null,
       });
-      setPuzzleOperation(response.operation);
-      setPuzzleSession(response.session);
-
-      const generatedCandidate = pickPuzzleCandidateForLevel(
-        response.session.draft?.candidates ?? [],
-        puzzleRun.playedProfileIds,
-      );
-      if (generatedCandidate) {
-        setPuzzleRun(
-          advanceLocalPuzzleLevelWithWork(
-            puzzleRun,
-            buildPuzzleCandidateWorkSummary(
-              generatedCandidate,
-              response.session,
-              puzzleRun.currentLevelIndex + 1,
-            ),
-          ),
-        );
-        return;
-      }
-
-      setPuzzleRun(advanceLocalPuzzleLevel(puzzleRun));
+      setPuzzleRun(run);
     } catch (error) {
       setPuzzleError(resolvePuzzleErrorMessage(error, '准备下一关失败。'));
     } finally {