fix: AI worker crash-proof + GDPR/hosting/accessibility analysis

AI worker fixes (root cause of "nothing reaches Replicate"):
- Worker task died silently — no exception handler around while loop
- Added try/except around entire loop body with exc_info logging
- Added watchdog task that restarts dead workers every 10 seconds
- ensure_workers_alive() called on every /api/ai/assess/batch POST
- _assess_one() is now a top-level function (not closure) — avoids
  subtle scoping bugs with async inner functions in while loops
- /api/ai/debug endpoint: shows worker alive status, task exception,
  last 10 queue entries — browse to /api/ai/debug to diagnose
- /api/ai/worker/restart endpoint + UI button
- "Restart AI worker" button + "Debug AI queue" link in enrichment tab

site_analyzer.py — new signals:
- IP resolution + ip-api.com for ASN, org, ISP, host country
- EU hosting detection (27 EU + EEA + adequacy countries)
- GDPR: detects Cookiebot, OneTrust, CookiePro, Osano, Iubenda,
  Borlabs, CookieYes, Complianz, Usercentrics + text signals
- Privacy policy and GDPR text presence
- Accessibility: html lang missing, images without alt count,
  skip nav link, empty links, inputs without labels

Gemini prompt additions:
- Hosting section: IP, ASN, org/ISP, EU vs non-EU flag
- GDPR section: cookie tool, notice, privacy policy
- Accessibility section: all quick-scan results
- New output fields: hosting_notes, gdpr_compliance,
  accessibility_issues[]

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

app/static/index.html

@@ -179,7 +179,9 @@ tr:hover td{background:rgba(255,255,255,.025)}
     <div class="mrow"><span class="mlabel">Reasoning</span><span x-text="modal.ai.lead_reasoning||'—'"></span></div>
     <div class="mrow"><span class="mlabel">KD notes</span><span x-text="modal.ai.kit_digital_reasoning||'—'"></span></div>
     <div class="mrow"><span class="mlabel">Performance</span><span x-text="modal.ai.performance_notes||'—'"></span></div>
-    <div class="mrow"><span class="mlabel">SEO status</span><span x-text="modal.ai.seo_status||'—'"></span></div>
+    <div class="mrow"><span class="mlabel">SEO</span><span x-text="modal.ai.seo_status||'—'"></span></div>
+    <div class="mrow"><span class="mlabel">Hosting</span><span x-text="(modal.sa?.org||'?') + ' / ' + (modal.sa?.ip_country||'?') + (modal.sa?.eu_hosted===false?' ❌ Non-EU':modal.sa?.eu_hosted?' ✅ EU':'')"></span></div>
+    <div class="mrow"><span class="mlabel">GDPR</span><span :style="(!modal.sa?.has_cookie_notice)?'color:var(--danger)':''" x-text="modal.ai.gdpr_compliance||'—'"></span></div>
 
     <!-- Content issues -->
     <div x-show="(modal.ai.content_issues||[]).length>0" style="margin:8px 0">
@@ -225,6 +227,14 @@ tr:hover td{background:rgba(255,255,255,.025)}
       <div style="font-size:13px;font-style:italic;color:var(--accent2)" x-text="modal.ai.pitch_angle||'—'"></div>
     </div>
 
+    <!-- Accessibility issues -->
+    <div x-show="(modal.ai.accessibility_issues||[]).length>0" style="margin:8px 0">
+      <div style="font-size:10px;color:var(--muted);text-transform:uppercase;margin-bottom:4px">Accessibility Issues</div>
+      <template x-for="issue in (modal.ai.accessibility_issues||[])">
+        <div style="font-size:12px;color:var(--warn);padding:2px 0">♿ <span x-text="issue"></span></div>
+      </template>
+    </div>
+
     <div class="mrow"><span class="mlabel">Services</span><span x-text="(modal.ai.services_needed||[]).join(', ')||'—'"></span></div>
     <div class="mrow"><span class="mlabel">Notes</span><span x-text="modal.ai.outreach_notes||'—'"></span></div>
 
@@ -431,7 +441,11 @@ tr:hover td{background:rgba(255,255,255,.025)}
       <div style="font-size:12px;color:var(--muted);margin-bottom:8px">
         Auto-assesses enriched domains via Gemini. Detects Kit Digital confirmation, extracts best contact channel, writes pitch.
       </div>
-      <button class="btn bai" @click="aiAssessAllKD()">🤖 AI Assess all Kit Digital domains</button>
+      <div style="display:flex;gap:6px;flex-wrap:wrap">
+        <button class="btn bai" @click="aiAssessAllKD()">🤖 AI Assess all Kit Digital domains</button>
+        <button class="btn bg sm" @click="restartAiWorker()">↺ Restart AI worker</button>
+        <a class="btn bg sm" href="/api/ai/debug" target="_blank" style="text-decoration:none">🔍 Debug AI queue</a>
+      </div>
     </div>
 
     <div style="margin-top:18px;padding-top:14px;border-top:1px solid var(--border)">
@@ -616,6 +630,7 @@ function app() {
       try { this.qst = await fetch('/api/enrich/status').then(r=>r.json()); } catch(e){}
     },
 
+    async restartAiWorker() { const r=await fetch('/api/ai/worker/restart',{method:'POST'}); this.notify('AI worker restarted','info'); await this.loadAiStatus(); },
     async startEnrich()  { await fetch('/api/enrich/resume',{method:'POST'}); this.notify('Worker started','success'); await this.loadQueue(); },
     async pauseEnrich()  { await fetch('/api/enrich/pause',{method:'POST'}); this.notify('Worker paused','success'); await this.loadQueue(); },
     async retryFailed()  { await fetch('/api/enrich/retry',{method:'POST'}); this.notify('Retrying failed','success'); await this.loadQueue(); },