feat(gui): Implement RAG Settings panel in AI Settings

src/gui_2.py

@@ -672,8 +672,9 @@ class App:
       self._render_provider_panel()
      if imgui.collapsing_header("System Prompts"):
       self._render_system_prompts_panel()
+     if imgui.collapsing_header("RAG Settings"):
+      self._render_rag_panel()
      self._render_agent_tools_panel()
-
     imgui.end()
    if self.ui_separate_usage_analytics and self.show_windows.get("Usage Analytics", False):
     exp, opened = imgui.begin("Usage Analytics", self.show_windows["Usage Analytics"])
@@ -4372,6 +4373,44 @@ def hello():
    self.show_preset_manager_window = True
   imgui.set_item_tooltip("Open preset management modal")
   ch, self.ui_project_system_prompt = imgui.input_text_multiline("##psp", self.ui_project_system_prompt, imgui.ImVec2(-1, 100))
+ def _render_rag_panel(self) -> None:
+  conf = self.controller.rag_config
+  if not conf: return
+  ch, conf.enabled = imgui.checkbox("Enable RAG", conf.enabled)
+  
+  imgui.text("Vector Store Provider")
+  providers = ['chroma', 'qdrant', 'mock']
+  try:
+   idx = providers.index(conf.vector_store.provider)
+  except (ValueError, AttributeError):
+   idx = 0
+  ch2, next_idx = imgui.combo("##rag_provider", idx, providers)
+  if ch2:
+   conf.vector_store.provider = providers[next_idx]
+   
+  imgui.text("Embedding Provider")
+  emb_providers = ['gemini', 'local']
+  try:
+   idx_e = emb_providers.index(conf.embedding_provider)
+  except (ValueError, AttributeError):
+   idx_e = 0
+  ch3, next_idx_e = imgui.combo("##rag_emb_provider", idx_e, emb_providers)
+  if ch3:
+   conf.embedding_provider = emb_providers[next_idx_e]
+   
+  imgui.text("Chunk Size")
+  imgui.set_next_item_width(150)
+  ch4, conf.chunk_size = imgui.input_int("##rag_chunk_size", conf.chunk_size)
+  imgui.text("Chunk Overlap")
+  imgui.set_next_item_width(150)
+  ch5, conf.chunk_overlap = imgui.input_int("##rag_chunk_overlap", conf.chunk_overlap)
+  
+  imgui.separator()
+  imgui.text(f"Status: {self.controller.rag_status}")
+  
+  if imgui.button("Rebuild Index"):
+   self.controller._rebuild_rag_index()
+
  def _render_agent_tools_panel(self) -> None:
   if imgui.collapsing_header("Active Tool Presets & Biases", imgui.TreeNodeFlags_.default_open):
    imgui.text("Tool Preset")