fix(prompt): 修复 PromptComponentManager 的方法定义在类外部的问题

将多个本应属于 `PromptComponentManager` 的实例方法（如 `get_injections_for_prompt`, `get_rules_for_target` 等）移回正确的类定义内。

这些方法之前因缩进错误被意外地定义在了类外部，导致它们无法作为实例方法被正确调用。本次提交修正了这个问题，确保了类的封装性和方法的正确作用域。

src/chat/utils/prompt_component_manager.py

@@ -206,7 +206,7 @@ class PromptComponentManager:
                 injection_map[target] = info_list
         return injection_map
 
-async def get_injections_for_prompt(self, target_prompt_name: str) -> list[dict]:
+    async def get_injections_for_prompt(self, target_prompt_name: str) -> list[dict]:
         """获取指定核心提示词模板的所有注入信息（增强版，包含更多细节）。"""
         rules_for_target = self._dynamic_rules.get(target_prompt_name, {})
         if not rules_for_target:
@@ -226,7 +226,7 @@ async def get_injections_for_prompt(self, target_prompt_name: str) -> list[dict]
         info_list.sort(key=lambda x: x["priority"])
         return info_list
 
-def get_all_dynamic_rules(self) -> dict[str, dict[str, "InjectionRule"]]:
+    def get_all_dynamic_rules(self) -> dict[str, dict[str, "InjectionRule"]]:
         """获取所有当前的动态注入规则，以 InjectionRule 对象形式返回。"""
         rules_copy = {}
         # 只返回规则对象，隐藏 provider 实现细节
@@ -237,7 +237,7 @@ def get_all_dynamic_rules(self) -> dict[str, dict[str, "InjectionRule"]]:
             rules_copy[target] = target_copy
         return copy.deepcopy(rules_copy)
 
-def get_rules_for_target(self, target_prompt: str) -> dict[str, InjectionRule]:
+    def get_rules_for_target(self, target_prompt: str) -> dict[str, InjectionRule]:
         """
         获取所有注入到指定核心提示词的动态规则。
 
@@ -262,7 +262,7 @@ def get_rules_for_target(self, target_prompt: str) -> dict[str, InjectionRule]:
         target_rules = self._dynamic_rules.get(target_prompt, {})
         return {name: copy.deepcopy(rule_info[0]) for name, rule_info in target_rules.items()}
 
-def get_rules_by_component(self, component_name: str) -> dict[str, InjectionRule]:
+    def get_rules_by_component(self, component_name: str) -> dict[str, InjectionRule]:
         """
         获取由指定的单个注入组件定义的所有动态规则。
 
@@ -291,9 +291,9 @@ def get_rules_by_component(self, component_name: str) -> dict[str, InjectionRule
                 found_rules[target] = copy.deepcopy(rule_info[0])
         return found_rules
 
-async def preview_prompt_injections(
+    async def preview_prompt_injections(
         self, target_prompt_name: str, params: PromptParameters
-) -> str:
+    ) -> str:
         """
         【预览功能】模拟应用所有注入规则，返回最终生成的模板字符串，而不实际修改任何状态。
         """