fix: restore embedded wiki images and optimize vector sync

offline-backend-20260512/backend/packages/harness/deerflow/config/llmwiki_config.py

@@ -59,7 +59,7 @@ class LocalWikiEmbeddingConfig(BaseModel):
     base_url: str = ""
     api_key: str = Field(default="", repr=False)
     dimensions: int | None = Field(
-        default=1024,
+        default=None,
         ge=1,
         le=65536,
         description="Expected response vector dimensions; not sent to the embedding endpoint.",
@@ -108,9 +108,7 @@ class LocalWikiIndexConfig(BaseModel):
     """DeerFlow-owned mirror and exact-vector index for WeKnora Wiki pages."""
 
     enabled: bool = False
-    sync_enabled: bool = False
-    internal_search_enabled: bool = False
-    reference_ui_enabled: bool = False
+    auto_sync: bool = False
     sync_interval_seconds: int = Field(default=120, ge=10, le=86400)
     sync_page_size: int = Field(default=100, ge=1, le=500)
     sync_concurrency: int = Field(default=3, ge=1, le=32)
@@ -133,9 +131,31 @@ class LocalWikiIndexConfig(BaseModel):
     keyword_boost_weight: float = Field(default=0.15, ge=0, le=1)
     cache_max_knowledge_bases: int = Field(default=20, ge=1, le=1000)
     cache_revision_check_seconds: float = Field(default=5, ge=0, le=3600)
+    database_batch_size: int = Field(default=50, ge=1, le=500)
     external_api: LocalWikiExternalApiConfig = Field(default_factory=LocalWikiExternalApiConfig)
     model_config = ConfigDict(extra="ignore")
 
+    @model_validator(mode="before")
+    @classmethod
+    def _migrate_legacy_flags(cls, value):
+        if isinstance(value, dict) and "auto_sync" not in value and "sync_enabled" in value:
+            value = {**value, "auto_sync": value.get("sync_enabled")}
+        return value
+
+    @property
+    def sync_enabled(self) -> bool:
+        """Backward-compatible status name; automatic work is one explicit switch."""
+
+        return self.auto_sync
+
+    @property
+    def internal_search_enabled(self) -> bool:
+        return self.enabled
+
+    @property
+    def reference_ui_enabled(self) -> bool:
+        return self.enabled
+
     @model_validator(mode="after")
     def _validate_index(self):
         if self.chunk_overlap_chars >= self.chunk_max_chars: