fix: 'Not checked' routes to DuckDB, not SQLite

prescreen_status='none' was truthy so it triggered /api/enriched, which only
finds rows already in enriched_domains with NULL status — missing all the
unprocessed domains that only exist in the 72M DuckDB index.

- exclude 'none' from the hasEnrichFilter check
- 'Not checked' now uses /api/domains (DuckDB) and filters client-side:
  rows where prescreen_status is absent = never touched
- all other prescreen status values (live/dead/parked/error) still use
  /api/enriched server-side

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

app/static/beauty/index.html

@@ -493,23 +493,29 @@ function app() {
         if (this.f.alpha_only) p.set('alpha_only', 'true');
         if (this.f.no_sld)     p.set('no_sld',     'true');
 
-        const hasEnrichFilter = this.f.prescreen_status || this.f.niche || this.f.site_type || this.f.country;
+        // 'none' (Not checked) = domains never in the pipeline → must search DuckDB.
+        // Any other enrichment filter (live/dead/parked, niche, site_type, country)
+        // requires the SQLite enriched_domains table.
+        const hasEnrichFilter = (this.f.prescreen_status && this.f.prescreen_status !== 'none')
+                               || this.f.niche || this.f.site_type || this.f.country;
         let endpoint;
         if (hasEnrichFilter) {
-          // Enrichment filters require the SQLite table — add them server-side
           if (this.f.prescreen_status) p.set('prescreen_status', this.f.prescreen_status);
           if (this.f.niche)            p.set('niche',            this.f.niche);
           if (this.f.site_type)        p.set('site_type',        this.f.site_type);
           if (this.f.country)          p.set('country',          this.f.country.trim().toUpperCase());
           endpoint = '/api/enriched';
         } else {
-          // Discovery mode: search full 72M DuckDB index (e.g. "Not checked" keyword search)
           endpoint = '/api/domains';
         }
 
         const d = await fetch(endpoint + '?' + p).then(r=>r.json());
         this.domainsTotal = d.total || 0;
-        this.domains      = d.results || [];
+        let rows = d.results || [];
+        // 'Not checked': DuckDB returns all domains joined with enriched data;
+        // filter client-side to keep only those with no prescreen_status yet.
+        if (this.f.prescreen_status === 'none') rows = rows.filter(r => !r.prescreen_status);
+        this.domains = rows;
       } catch(e) { this.notify('Failed to load: '+e.message, 'error'); }
       finally { this.loading = false; }
     },