Add CalDAV calendar integration, LLM-suggested tags, and settings refinements

- CalDAV integration: per-user calendar config, create/list/search events
  via caldav library, LLM tools for calendar operations from chat
- LLM-suggested tags: new tag_suggestions service prompts LLM with existing
  tags and note content to suggest 3-5 relevant tags; exposed via API
  endpoints (suggest-tags, append-tag); integrated into editor views
  (suggest button + clickable pills) and chat tool calls (pills in
  ToolCallCard with one-click apply)
- Settings/model UI refinements, generation task improvements

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/stores/chat.ts

@@ -13,9 +13,7 @@ import type {
   ConversationDetail,
   ContextMeta,
   Message,
-  OllamaModel,
   OllamaStatus,
-  RunningModel,
   SendMessageResponse,
   ToolCallRecord,
 } from "@/types/chat";
@@ -29,8 +27,6 @@ export const useChatStore = defineStore("chat", () => {
   const streamingContent = ref("");
   const streamingToolCalls = ref<ToolCallRecord[]>([]);
   const lastContextMeta = ref<ContextMeta | null>(null);
-  const models = ref<OllamaModel[]>([]);
-  const runningModels = ref<RunningModel[]>([]);
   const ollamaStatus = ref<"checking" | "available" | "unavailable">("checking");
   const modelStatus = ref<"checking" | "ready" | "not_found">("checking");
   const defaultModel = ref("");
@@ -56,14 +52,10 @@ export const useChatStore = defineStore("chat", () => {
     }
   }
 
-  async function createConversation(
-    title = "",
-    model = ""
-  ): Promise<Conversation> {
+  async function createConversation(title = ""): Promise<Conversation> {
     try {
       const conv = await apiPost<Conversation>("/api/chat/conversations", {
         title,
-        model,
       });
       conversations.value.unshift(conv);
       return conv;
@@ -319,24 +311,6 @@ export const useChatStore = defineStore("chat", () => {
     }
   }
 
-  async function fetchModels() {
-    try {
-      const data = await apiGet<{ models: OllamaModel[] }>("/api/chat/models");
-      models.value = data.models;
-    } catch {
-      models.value = [];
-    }
-  }
-
-  async function fetchRunningModels() {
-    try {
-      const data = await apiGet<{ models: RunningModel[] }>("/api/chat/ps");
-      runningModels.value = data.models;
-    } catch {
-      runningModels.value = [];
-    }
-  }
-
   async function warmModel(model: string) {
     try {
       await apiPost("/api/chat/warm", { model });
@@ -345,25 +319,6 @@ export const useChatStore = defineStore("chat", () => {
     }
   }
 
-  async function updateConversationModel(id: number, model: string) {
-    try {
-      const updated = await apiPatch<Conversation>(
-        `/api/chat/conversations/${id}`,
-        { model }
-      );
-      const idx = conversations.value.findIndex((c) => c.id === id);
-      if (idx !== -1) {
-        conversations.value[idx] = { ...conversations.value[idx], ...updated };
-      }
-      if (currentConversation.value?.id === id) {
-        currentConversation.value.model = updated.model;
-      }
-    } catch (e) {
-      useToastStore().show("Failed to update model", "error");
-      throw e;
-    }
-  }
-
   return {
     conversations,
     currentConversation,
@@ -373,8 +328,6 @@ export const useChatStore = defineStore("chat", () => {
     streamingContent,
     streamingToolCalls,
     lastContextMeta,
-    models,
-    runningModels,
     ollamaStatus,
     modelStatus,
     defaultModel,
@@ -388,10 +341,7 @@ export const useChatStore = defineStore("chat", () => {
     cancelGeneration,
     saveMessageAsNote,
     summarizeAsNote,
-    fetchModels,
-    fetchRunningModels,
     warmModel,
-    updateConversationModel,
     fetchStatus,
     startStatusPolling,
     stopStatusPolling,

frontend/src/stores/settings.ts

@@ -1,13 +1,12 @@
 import { ref, computed } from "vue";
 import { defineStore } from "pinia";
-import { apiGet, apiPut, apiPost, apiStreamPost } from "@/api/client";
+import { apiGet, apiPut } from "@/api/client";
 import { useToastStore } from "@/stores/toast";
 import type { AppSettings } from "@/types/settings";
 
 export const useSettingsStore = defineStore("settings", () => {
   const settings = ref<AppSettings>({});
   const loading = ref(false);
-  const installedModels = ref<string[]>([]);
 
   const assistantName = computed(
     () => settings.value.assistant_name || "Fable"
@@ -40,44 +39,12 @@ export const useSettingsStore = defineStore("settings", () => {
     }
   }
 
-  async function fetchInstalledModels() {
-    try {
-      const data = await apiGet<{ models: { name: string }[] }>("/api/chat/models");
-      installedModels.value = data.models.map((m) => m.name);
-    } catch {
-      installedModels.value = [];
-    }
-  }
-
-  async function pullModel(
-    model: string,
-    onProgress?: (data: Record<string, unknown>) => void,
-  ) {
-    await apiStreamPost("/api/chat/models/pull", { model }, (data) => {
-      if (onProgress) onProgress(data);
-    });
-  }
-
-  async function deleteModel(model: string) {
-    try {
-      await apiPost("/api/chat/models/delete", { model });
-      await fetchInstalledModels();
-    } catch (e) {
-      useToastStore().show("Failed to delete model", "error");
-      throw e;
-    }
-  }
-
   return {
     settings,
     loading,
-    installedModels,
     assistantName,
     defaultModel,
     fetchSettings,
     updateSettings,
-    fetchInstalledModels,
-    pullModel,
-    deleteModel,
   };
 });