Delta team/fix comment ui (#10)

fix các bug theo yêu cầu
https://fptsoftware362-my.sharepoint.com/❌/g/personal/nampdt_fpt_com/IQAHBJ4A9xqDTLgvt2bhukJEAdRB5LRz2hbJpTivvIiBSYM?wdExp=TEAMS-TREATMENT&web=1&isSPOFile=1&ovuser=f01e930a-b52e-42b1-b70f-a8882b5d043b%2CAnhTNM1%40fpt.com&clickparams=eyJBcHBOYW1lIjoiVGVhbXMtRGVza3RvcCIsIkFwcFZlcnNpb24iOiI0OS8yNjA4MTMxOTMxNyIsIkhhc0ZlZGVyYXRlZFVzZXIiOmZhbHNlfQ%3D%3D

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Co-authored-by: Duy Le Huu <duylh19@fpt.com>
Reviewed-on: #10
Co-authored-by: Anh Tran Nguyen Minh <anhtnm1@fpt.com>

ui/help_agent_widget.py

@@ -23,7 +23,7 @@ from PySide6.QtWidgets import (
     QVBoxLayout, QWidget,
 )
 
-from ..core import admin_agents
+from ..core import admin_agents, help_knowledge
 from ..core.worker import AgentWorker
 from ..i18n import tr
 from .icons import icon
@@ -217,8 +217,7 @@ class HelpAgentWidget(QWidget):
     # ---- greeting / labels ------------------------------------------------
     def _greeting(self) -> str:
         """Câu chào mở đầu, có tên người dùng nếu biết."""
-        name = self._user_name or tr("help_agent.default_user")
-        return tr("help_agent.greeting", name=name)
+        return help_knowledge.greeting(self._user_name)
 
     # ---- construction -----------------------------------------------------
     def _build_edge_tab(self) -> None:
@@ -464,11 +463,12 @@ class HelpAgentWidget(QWidget):
         agent = admin_agents.ensure_help_agent(
             admin_agents.agents_admin_dir(self.ctx.config.shared_dir))
         history = list(self._history)
+        sys_prompt = help_knowledge.build_prompt(agent.effective_prompt(), getattr(self.parent(), "help_context", lambda: "")())
 
         def job(worker):
             """Chạy nền: gọi provider của Help Agent kèm prompt hệ thống của nó."""
             provider = admin_agents.build_agent_provider(self.ctx, agent)
-            messages = [{"role": "system", "content": agent.effective_prompt()}] + history
+            messages = [{"role": "system", "content": sys_prompt}] + history
             result = provider.chat(messages, tools=None, cancel=worker.is_cancelled)
             content = result.get("content", "") if isinstance(result, dict) else str(result)
             return {"content": provider.strip_think(content) or ""}