fix: evidence articles missing on recommendations + Lucide title prop CI failure

- recommendation worker: filter out non-UUID document IDs (synthetic
  pattern:* IDs from competitive signals) before inserting into
  recommendation_evidence table — the uuid cast was failing and
  silently dropping all evidence rows
- wrap executemany in try/except so partial failures don't lose all evidence
- SqlExplorer: wrap Lucide icons in <span title=...> instead of passing
  title prop directly (not supported by lucide-react, broke CI build)

frontend/src/pages/SqlExplorer.tsx

@@ -282,8 +282,8 @@ export function SqlExplorerPage() {
                   {t.columns.map((c) => (
                     <div key={c.name} className="flex items-center justify-between text-[10px]">
                       <span className="flex items-center gap-1 text-gray-400">
-                        {c.primary_key && <Key size={9} className="text-amber-500" title="Primary key" />}
-                        {c.references && <Link size={9} className="text-blue-400" title={`FK → ${c.references}`} />}
+                        {c.primary_key && <span title="Primary key"><Key size={9} className="text-amber-500" /></span>}
+                        {c.references && <span title={`FK → ${c.references}`}><Link size={9} className="text-blue-400" /></span>}
                         {c.name}
                       </span>
                       <span className="text-gray-600">{c.type}</span>