chore(frontend): drop dead settings toggle, types, and store list-surface

Drift-audit Group 7 frontend cleanup (no behavioral change):

- SettingsView: remove the 'auto-consolidate task bodies' toggle and its
  saveAutoConsolidate handler. The auto_consolidate_tasks setting has zero
  backend readers (curator removed in Phase 8); the control did nothing.
- AppSettings type: drop the dead assistant_name / default_model hints (kept
  the open string index signature the store actually uses). Delete the fully
  orphaned types/chat.ts (zero importers).
- notes/tasks Pinia stores: remove the list/filter/sort/pagination surface
  that backed the removed /notes and /tasks list views (verified no consumer
  uses the tasks/notes arrays, refresh, or any filter/sort/pagination method).
  Kept currentNote/currentTask, loading, fetch/create/update/delete, convert,
  patchStatus, startPlanning, backlinks, tags.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/types/chat.ts

@@ -1,67 +0,0 @@
-export interface GenerationTiming {
-  total_ms: number;
-  intent_ms: number | null;
-  ttft_ms: number | null;
-  generation_ms: number | null;
-  tools: Array<{ name: string; ms: number }>;
-}
-
-export interface ToolCallRecord {
-  function: string;
-  arguments: Record<string, unknown>;
-  result: { success: boolean; type?: string; data?: Record<string, unknown>; error?: string; suggested_tags?: string[]; requires_confirmation?: boolean; similar_note?: { id: number; title: string } };
-  status: "running" | "success" | "error" | "declined";
-}
-
-export interface ToolPendingRecord {
-  function: string;
-  arguments: Record<string, unknown>;
-  label?: string;
-}
-
-export interface Message {
-  id: number;
-  conversation_id: number;
-  role: "system" | "user" | "assistant";
-  content: string;
-  status?: "complete" | "generating" | "error";
-  context_note_id: number | null;
-  context_note_title?: string | null;
-  tool_calls?: ToolCallRecord[] | null;
-  metadata?: Record<string, unknown> | null;
-  created_at: string;
-  timing?: GenerationTiming;
-  thinking?: string;
-}
-
-export interface SendMessageResponse {
-  assistant_message_id: number;
-  status: string;
-}
-
-export interface Conversation {
-  id: number;
-  title: string;
-  model: string;
-  message_count: number;
-  rag_project_id: number | null;
-  created_at: string;
-  updated_at: string;
-}
-
-export interface ConversationDetail extends Conversation {
-  messages: Message[];
-}
-
-export interface ContextMeta {
-  context_note_id: number | null;
-  context_note_title: string | null;
-  auto_notes: { id: number; title: string; score?: number | null; auto_injected?: boolean }[];
-  auto_injected_notes?: { id: number; title: string; score?: number | null }[];
-}
-
-export interface OllamaStatus {
-  ollama: "available" | "unavailable";
-  model: "loaded" | "cold" | "not_found";
-  default_model: string;
-}

frontend/src/types/settings.ts

@@ -1,5 +1,6 @@
+// Settings are free-form string key/value pairs keyed by setting name; the
+// backend has no fixed schema, so this is an open string map. (The former
+// assistant_name/default_model hints were dead after the Phase-8 chat removal.)
 export interface AppSettings {
-  assistant_name?: string;
-  default_model?: string;
   [key: string]: string | undefined;
 }