fix: join through document_intelligence in patterns endpoint

The inline catalyst_type query in GET /api/patterns/{ticker} referenced
dir.document_id which does not exist on document_impact_records. The
table links to documents via intelligence_id -> document_intelligence ->
document_id. Added the missing JOIN to match the pattern used in
_SELF_PATTERN_QUERY.

services/api/app.py

@@ -2717,7 +2717,8 @@ async def get_patterns_for_ticker(
         rows = await pool.fetch(
             """SELECT DISTINCT dir.catalyst_type
                FROM document_impact_records dir
-               JOIN documents d ON d.id = dir.document_id
+               JOIN document_intelligence di ON di.id = dir.intelligence_id
+               JOIN documents d ON d.id = di.document_id
                WHERE dir.ticker = $1
                  AND d.status != 'rejected'
                  AND dir.catalyst_type IS NOT NULL""",