diff --git a/api/ebay_webhook.py b/api/ebay_webhook.py
index 0719455..7f59254 100644
--- a/api/ebay_webhook.py
+++ b/api/ebay_webhook.py
@@ -26,11 +26,11 @@ from pathlib import Path
 from typing import Optional
 
 import requests
-from fastapi import APIRouter, Header, HTTPException, Request
 from cryptography.exceptions import InvalidSignature
 from cryptography.hazmat.primitives.asymmetric.ec import ECDSA
 from cryptography.hazmat.primitives.hashes import SHA1
 from cryptography.hazmat.primitives.serialization import load_pem_public_key
+from fastapi import APIRouter, Header, HTTPException, Request
 
 from app.db.store import Store
 
diff --git a/app/db/models.py b/app/db/models.py
index 3f0acde..08a3eaa 100644
--- a/app/db/models.py
+++ b/app/db/models.py
@@ -1,5 +1,6 @@
 """Dataclasses for all Snipe domain objects."""
 from __future__ import annotations
+
 from dataclasses import dataclass, field
 from typing import Optional
 
diff --git a/app/db/store.py b/app/db/store.py
index b246fa8..513fb63 100644
--- a/app/db/store.py
+++ b/app/db/store.py
@@ -1,5 +1,6 @@
 """Thin SQLite read/write layer for all Snipe models."""
 from __future__ import annotations
+
 import json
 from datetime import datetime, timezone
 from pathlib import Path
@@ -7,7 +8,7 @@ from typing import Optional
 
 from circuitforge_core.db import get_connection, run_migrations
 
-from .models import Listing, Seller, TrustScore, MarketComp, SavedSearch, ScammerEntry
+from .models import Listing, MarketComp, SavedSearch, ScammerEntry, Seller, TrustScore
 
 MIGRATIONS_DIR = Path(__file__).parent / "migrations"
 
@@ -381,6 +382,59 @@ class Store:
             for r in rows
         ]
 
+    def save_community_signal(self, seller_id: str, confirmed: bool) -> None:
+        """Record a user's trust-score feedback signal into the shared DB."""
+        self._conn.execute(
+            "INSERT INTO community_signals (seller_id, confirmed) VALUES (?, ?)",
+            (seller_id, 1 if confirmed else 0),
+        )
+        self._conn.commit()
+
+    # --- User Preferences ---
+
+    def get_user_preference(self, path: str, default=None):
+        """Read a preference value at dot-separated path (e.g. 'affiliate.opt_out').
+
+        Reads from the singleton user_preferences row; returns *default* if the
+        table is empty or the path is not set.
+        """
+        from circuitforge_core.preferences.paths import get_path
+        row = self._conn.execute(
+            "SELECT prefs_json FROM user_preferences WHERE id=1"
+        ).fetchone()
+        if not row:
+            return default
+        return get_path(json.loads(row[0]), path, default=default)
+
+    def set_user_preference(self, path: str, value) -> None:
+        """Write *value* at dot-separated path (immutable JSON update).
+
+        Creates the singleton row on first write; merges subsequent updates
+        so sibling paths are preserved.
+        """
+        from circuitforge_core.preferences.paths import set_path
+        row = self._conn.execute(
+            "SELECT prefs_json FROM user_preferences WHERE id=1"
+        ).fetchone()
+        prefs = json.loads(row[0]) if row else {}
+        updated = set_path(prefs, path, value)
+        self._conn.execute(
+            "INSERT INTO user_preferences (id, prefs_json, updated_at) "
+            "VALUES (1, ?, strftime('%Y-%m-%dT%H:%M:%SZ', 'now')) "
+            "ON CONFLICT(id) DO UPDATE SET "
+            "  prefs_json = excluded.prefs_json, "
+            "  updated_at = excluded.updated_at",
+            (json.dumps(updated),),
+        )
+        self._conn.commit()
+
+    def get_all_preferences(self) -> dict:
+        """Return all preferences as a plain dict (empty dict if not yet set)."""
+        row = self._conn.execute(
+            "SELECT prefs_json FROM user_preferences WHERE id=1"
+        ).fetchone()
+        return json.loads(row[0]) if row else {}
+
     def get_market_comp(self, platform: str, query_hash: str) -> Optional[MarketComp]:
         row = self._conn.execute(
             "SELECT platform, query_hash, median_price, sample_count, expires_at, id, fetched_at "
diff --git a/app/platforms/__init__.py b/app/platforms/__init__.py
index 93bd054..1ed2dd0 100644
--- a/app/platforms/__init__.py
+++ b/app/platforms/__init__.py
@@ -1,8 +1,10 @@
 """PlatformAdapter abstract base and shared types."""
 from __future__ import annotations
+
 from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from typing import Optional
+
 from app.db.models import Listing, Seller
 
 
diff --git a/app/platforms/ebay/adapter.py b/app/platforms/ebay/adapter.py
index 75ccafa..4b729b9 100644
--- a/app/platforms/ebay/adapter.py
+++ b/app/platforms/ebay/adapter.py
@@ -1,10 +1,12 @@
 """eBay Browse API adapter."""
 from __future__ import annotations
+
 import hashlib
 import logging
 from dataclasses import replace
 from datetime import datetime, timedelta, timezone
 from typing import Optional
+
 import requests
 
 log = logging.getLogger(__name__)
@@ -18,7 +20,7 @@ _SHOPPING_API_MAX_PER_SEARCH = 5          # sellers enriched per search call
 _SHOPPING_API_INTER_REQUEST_DELAY = 0.5   # seconds between successive calls
 _SELLER_ENRICH_TTL_HOURS = 24             # skip re-enrichment within this window
 
-from app.db.models import Listing, Seller, MarketComp
+from app.db.models import Listing, MarketComp, Seller
 from app.db.store import Store
 from app.platforms import PlatformAdapter, SearchFilters
 from app.platforms.ebay.auth import EbayTokenManager
diff --git a/app/platforms/ebay/auth.py b/app/platforms/ebay/auth.py
index f04c4cd..c20a06d 100644
--- a/app/platforms/ebay/auth.py
+++ b/app/platforms/ebay/auth.py
@@ -1,8 +1,10 @@
 """eBay OAuth2 client credentials token manager."""
 from __future__ import annotations
+
 import base64
 import time
 from typing import Optional
+
 import requests
 
 EBAY_OAUTH_URLS = {
diff --git a/app/platforms/ebay/normaliser.py b/app/platforms/ebay/normaliser.py
index 99f4921..063a104 100644
--- a/app/platforms/ebay/normaliser.py
+++ b/app/platforms/ebay/normaliser.py
@@ -1,8 +1,10 @@
 """Convert raw eBay API responses into Snipe domain objects."""
 from __future__ import annotations
+
 import json
 from datetime import datetime, timezone
 from typing import Optional
+
 from app.db.models import Listing, Seller
 
 
diff --git a/app/tasks/scheduler.py b/app/tasks/scheduler.py
index 74fabd4..962666d 100644
--- a/app/tasks/scheduler.py
+++ b/app/tasks/scheduler.py
@@ -9,6 +9,7 @@ from circuitforge_core.tasks.scheduler import (
 )
 from circuitforge_core.tasks.scheduler import (
     get_scheduler as _base_get_scheduler,
+    reset_scheduler,  # re-export for lifespan teardown
 )
 
 from app.tasks.runner import LLM_TASK_TYPES, VRAM_BUDGETS, run_task
diff --git a/app/trust/metadata.py b/app/trust/metadata.py
index 9ce88a6..f672c6d 100644
--- a/app/trust/metadata.py
+++ b/app/trust/metadata.py
@@ -1,7 +1,9 @@
 """Five metadata trust signals, each scored 0–20."""
 from __future__ import annotations
+
 import json
 from typing import Optional
+
 from app.db.models import Seller
 
 ELECTRONICS_CATEGORIES = {"ELECTRONICS", "COMPUTERS_TABLETS", "VIDEO_GAMES", "CELL_PHONES"}
diff --git a/app/trust/photo.py b/app/trust/photo.py
index 78301b9..9fb541f 100644
--- a/app/trust/photo.py
+++ b/app/trust/photo.py
@@ -1,7 +1,9 @@
 """Perceptual hash deduplication within a result set (free tier, v0.1)."""
 from __future__ import annotations
-from typing import Optional
+
 import io
+from typing import Optional
+
 import requests
 
 try:
diff --git a/app/ui/Search.py b/app/ui/Search.py
index 0b65650..5130d81 100644
--- a/app/ui/Search.py
+++ b/app/ui/Search.py
@@ -1,19 +1,24 @@
 """Main search + results page."""
 from __future__ import annotations
+
 import logging
 import os
 from pathlib import Path
+
 import streamlit as st
 from circuitforge_core.config import load_env
+
 from app.db.store import Store
 from app.platforms import PlatformAdapter, SearchFilters
 from app.trust import TrustScorer
-from app.ui.components.filters import build_filter_options, render_filter_sidebar, FilterState
-from app.ui.components.listing_row import render_listing_row
 from app.ui.components.easter_eggs import (
-    inject_steal_css, check_snipe_mode, render_snipe_mode_banner,
     auction_hours_remaining,
+    check_snipe_mode,
+    inject_steal_css,
+    render_snipe_mode_banner,
 )
+from app.ui.components.filters import FilterState, build_filter_options, render_filter_sidebar
+from app.ui.components.listing_row import render_listing_row
 
 log = logging.getLogger(__name__)
 
diff --git a/app/ui/components/easter_eggs.py b/app/ui/components/easter_eggs.py
index fddf033..4df09a7 100644
--- a/app/ui/components/easter_eggs.py
+++ b/app/ui/components/easter_eggs.py
@@ -22,7 +22,6 @@ import streamlit as st
 
 from app.db.models import Listing, TrustScore
 
-
 # ---------------------------------------------------------------------------
 # 1. Konami → Snipe Mode
 # ---------------------------------------------------------------------------
diff --git a/app/ui/components/filters.py b/app/ui/components/filters.py
index 6756939..09fffbb 100644
--- a/app/ui/components/filters.py
+++ b/app/ui/components/filters.py
@@ -1,9 +1,12 @@
 """Build dynamic filter options from a result set and render the Streamlit sidebar."""
 from __future__ import annotations
+
 import json
 from dataclasses import dataclass, field
 from typing import Optional
+
 import streamlit as st
+
 from app.db.models import Listing, TrustScore
 
 
diff --git a/app/ui/components/listing_row.py b/app/ui/components/listing_row.py
index 17056be..256fb98 100644
--- a/app/ui/components/listing_row.py
+++ b/app/ui/components/listing_row.py
@@ -1,13 +1,17 @@
 """Render a single listing row with trust score, badges, and error states."""
 from __future__ import annotations
+
 import json
 from typing import Optional
 
 import streamlit as st
 
-from app.db.models import Listing, TrustScore, Seller
+from app.db.models import Listing, Seller, TrustScore
 from app.ui.components.easter_eggs import (
-    is_steal, render_steal_banner, render_auction_notice, auction_hours_remaining,
+    auction_hours_remaining,
+    is_steal,
+    render_auction_notice,
+    render_steal_banner,
 )
 
 
diff --git a/app/wizard/setup.py b/app/wizard/setup.py
index 2ac8187..0bd3552 100644
--- a/app/wizard/setup.py
+++ b/app/wizard/setup.py
@@ -1,6 +1,8 @@
 """First-run wizard: collect eBay credentials and write .env."""
 from __future__ import annotations
+
 from pathlib import Path
+
 import streamlit as st
 from circuitforge_core.wizard import BaseWizard
 
diff --git a/streamlit_app.py b/streamlit_app.py
index c616633..1c21ffd 100644
--- a/streamlit_app.py
+++ b/streamlit_app.py
@@ -1,6 +1,8 @@
 """Streamlit entrypoint."""
 from pathlib import Path
+
 import streamlit as st
+
 from app.wizard import SnipeSetupWizard
 
 st.set_page_config(
@@ -16,6 +18,7 @@ if not wizard.is_configured():
     st.stop()
 
 from app.ui.components.easter_eggs import inject_konami_detector
+
 inject_konami_detector()
 
 with st.sidebar:
@@ -27,4 +30,5 @@ with st.sidebar:
     )
 
 from app.ui.Search import render
+
 render(audio_enabled=audio_enabled)
diff --git a/tests/platforms/test_ebay_auth.py b/tests/platforms/test_ebay_auth.py
index e16b517..3944c7c 100644
--- a/tests/platforms/test_ebay_auth.py
+++ b/tests/platforms/test_ebay_auth.py
@@ -1,7 +1,9 @@
 import time
-import requests
-from unittest.mock import patch, MagicMock
+from unittest.mock import MagicMock, patch
+
 import pytest
+import requests
+
 from app.platforms.ebay.auth import EbayTokenManager
 
 
diff --git a/tests/platforms/test_ebay_normaliser.py b/tests/platforms/test_ebay_normaliser.py
index ebb75fa..e8b0eaa 100644
--- a/tests/platforms/test_ebay_normaliser.py
+++ b/tests/platforms/test_ebay_normaliser.py
@@ -1,4 +1,5 @@
 import pytest
+
 from app.platforms.ebay.normaliser import normalise_listing, normalise_seller
 
 
diff --git a/tests/platforms/test_ebay_scraper.py b/tests/platforms/test_ebay_scraper.py
index a4c8519..a9cae13 100644
--- a/tests/platforms/test_ebay_scraper.py
+++ b/tests/platforms/test_ebay_scraper.py
@@ -3,16 +3,18 @@
 Uses a minimal HTML fixture mirroring eBay's current s-card markup.
 No HTTP requests are made — all tests operate on the pure parsing functions.
 """
-import pytest
 from datetime import timedelta
+
+import pytest
+from bs4 import BeautifulSoup
+
 from app.platforms.ebay.scraper import (
-    scrape_listings,
-    scrape_sellers,
+    _extract_seller_from_card,
     _parse_price,
     _parse_time_left,
-    _extract_seller_from_card,
+    scrape_listings,
+    scrape_sellers,
 )
-from bs4 import BeautifulSoup
 
 # ---------------------------------------------------------------------------
 # Minimal eBay search results HTML fixture (li.s-card schema)
diff --git a/tests/test_feedback.py b/tests/test_feedback.py
index e5e7e89..f75ff8c 100644
--- a/tests/test_feedback.py
+++ b/tests/test_feedback.py
@@ -4,12 +4,10 @@ from __future__ import annotations
 from collections.abc import Callable
 from unittest.mock import MagicMock, patch
 
+from circuitforge_core.api.feedback import make_feedback_router
 from fastapi import FastAPI
 from fastapi.testclient import TestClient
 
-from circuitforge_core.api.feedback import make_feedback_router
-
-
 # ── Test app factory ──────────────────────────────────────────────────────────
 
 def _make_client(demo_mode_fn: Callable[[], bool] | None = None) -> TestClient:
diff --git a/web/src/App.vue b/web/src/App.vue
index 39bf49d..592f820 100644
--- a/web/src/App.vue
+++ b/web/src/App.vue
@@ -2,10 +2,10 @@
   <!-- Root uses .app-root class, NOT id="app" — index.html owns #app.
        Nested #app elements cause ambiguous CSS specificity. Gotcha #1. -->
   <div class="app-root" :class="{ 'rich-motion': motion.rich.value }">
+    <!-- Skip to main content — must be first focusable element before the nav -->
+    <a href="#main-content" class="skip-link">Skip to main content</a>
     <AppNav />
     <main class="app-main" id="main-content" tabindex="-1">
-      <!-- Skip to main content link (screen reader / keyboard nav) -->
-      <a href="#main-content" class="skip-link">Skip to main content</a>
       <RouterView />
     </main>
 
@@ -22,6 +22,7 @@ import { useSnipeMode } from './composables/useSnipeMode'
 import { useKonamiCode } from './composables/useKonamiCode'
 import { useSessionStore } from './stores/session'
 import { useBlocklistStore } from './stores/blocklist'
+import { usePreferencesStore } from './stores/preferences'
 import AppNav from './components/AppNav.vue'
 import FeedbackButton from './components/FeedbackButton.vue'
 
@@ -29,14 +30,16 @@ const motion = useMotion()
 const { activate, restore } = useSnipeMode()
 const session = useSessionStore()
 const blocklistStore = useBlocklistStore()
+const preferencesStore = usePreferencesStore()
 const route = useRoute()
 
 useKonamiCode(activate)
 
-onMounted(() => {
-  restore()                      // re-apply snipe mode from localStorage on hard reload
-  session.bootstrap()            // fetch tier + feature flags from API
-  blocklistStore.fetchBlocklist() // pre-load so card block buttons reflect state immediately
+onMounted(async () => {
+  restore()                           // re-apply snipe mode from localStorage on hard reload
+  await session.bootstrap()           // fetch tier + feature flags from API
+  blocklistStore.fetchBlocklist()     // pre-load so card block buttons reflect state immediately
+  preferencesStore.load()             // load user preferences after session resolves
 })
 </script>
 
diff --git a/web/src/composables/useTrustFeedback.ts b/web/src/composables/useTrustFeedback.ts
index 66a0e77..a2bca32 100644
--- a/web/src/composables/useTrustFeedback.ts
+++ b/web/src/composables/useTrustFeedback.ts
@@ -10,8 +10,9 @@ export function useTrustFeedback(sellerId: string) {
   async function submitFeedback(confirmed: boolean): Promise<void> {
     if (state.value !== 'idle') return
     state.value = 'sending'
+    const apiBase = (import.meta.env.VITE_API_BASE as string) ?? ''
     try {
-      await fetch('/api/community/signal', {
+      await fetch(`${apiBase}/api/community/signal`, {
         method: 'POST',
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ seller_id: sellerId, confirmed }),
diff --git a/web/src/stores/search.ts b/web/src/stores/search.ts
index 042e4c0..c85a4eb 100644
--- a/web/src/stores/search.ts
+++ b/web/src/stores/search.ts
@@ -163,8 +163,11 @@ export const useSearchStore = defineStore('search', () => {
       // VITE_API_BASE is '' in dev; '/snipe' under menagerie (baked at build time by Vite)
       const apiBase = (import.meta.env.VITE_API_BASE as string) ?? ''
       const params = new URLSearchParams({ q })
-      if (filters.maxPrice != null) params.set('max_price', String(filters.maxPrice))
-      if (filters.minPrice != null) params.set('min_price', String(filters.minPrice))
+      // v-model.number sends empty string when a number input is cleared — guard against that
+      const maxPrice = Number(filters.maxPrice)
+      const minPrice = Number(filters.minPrice)
+      if (Number.isFinite(maxPrice) && maxPrice > 0) params.set('max_price', String(maxPrice))
+      if (Number.isFinite(minPrice) && minPrice > 0) params.set('min_price', String(minPrice))
       if (filters.pages != null && filters.pages > 1) params.set('pages', String(filters.pages))
       if (filters.mustInclude?.trim()) params.set('must_include', filters.mustInclude.trim())
       if (filters.mustIncludeMode) params.set('must_include_mode', filters.mustIncludeMode)