feat: 重构知识库系统，移除Hermes集成，增强RAG和同步功能

主要变更:
- 移除Hermes智能体及相关回调服务
- 新增知识库RAG、同步、调度、规范化和索引任务服务
- 重构orchestrator服务，增强运行时聊天功能
- 更新前端聊天、政策制度、设置等页面样式和逻辑
- 更新expense_claims和document_intelligence服务
- 删除llm_wiki相关服务和测试文件
- 更新docker-compose配置和启动脚本

server/src/app/services/ontology.py

@@ -243,6 +243,7 @@ STATUS_KEYWORDS = {
 
 PRIVILEGED_ROLE_CODES = {"manager", "finance", "approver", "executive"}
 CONTEXTUAL_SCENARIOS = {"expense", "accounts_receivable", "accounts_payable", "knowledge"}
+KNOWLEDGE_INTENTS = {"query", "explain", "compare"}
 
 
 @dataclass(slots=True)
@@ -356,7 +357,7 @@ class SemanticOntologyService:
                 rule_scenario = inferred_scenario
                 scenario_score = 0.18
 
-        if self._looks_like_expense_narrative(
+        if session_scenario != "knowledge" and self._looks_like_expense_narrative(
             compact_query,
             scenario=rule_scenario,
             entities=entities,
@@ -371,7 +372,7 @@ class SemanticOntologyService:
             entities=entities,
             time_range=time_range,
         )
-        if self._should_inherit_expense_draft(
+        if session_scenario != "knowledge" and self._should_inherit_expense_draft(
             compact_query,
             scenario=rule_scenario,
             entities=entities,
@@ -384,17 +385,19 @@ class SemanticOntologyService:
             intent_score = max(intent_score, 0.18)
         metrics = self._extract_metrics(compact_query)
         constraints = self._extract_constraints(compact_query, entities)
-        model_parse = self._parse_with_model(
-            payload=payload,
-            query=query,
-            compact_query=compact_query,
-            fallback_scenario=rule_scenario,
-            fallback_intent=rule_intent,
-            entities=entities,
-            time_range=time_range,
-            metrics=metrics,
-            constraints=constraints,
-        )
+        model_parse = None
+        if session_scenario != "knowledge":
+            model_parse = self._parse_with_model(
+                payload=payload,
+                query=query,
+                compact_query=compact_query,
+                fallback_scenario=rule_scenario,
+                fallback_intent=rule_intent,
+                entities=entities,
+                time_range=time_range,
+                metrics=metrics,
+                constraints=constraints,
+            )
         scenario = self._resolve_scenario(rule_scenario, model_parse)
         if session_scenario == "knowledge":
             scenario = "knowledge"
@@ -968,6 +971,12 @@ class SemanticOntologyService:
         model_parse: LlmOntologyParseResult | None,
     ) -> str:
         candidate = model_parse.intent if model_parse is not None else fallback_intent
+        if scenario == "knowledge":
+            if candidate in KNOWLEDGE_INTENTS:
+                return candidate
+            if fallback_intent in KNOWLEDGE_INTENTS:
+                return fallback_intent
+            return "query"
         if candidate == "query" and scenario == "expense":
             if self._is_generic_expense_prompt(compact_query) or fallback_intent == "draft":
                 return "draft"