fix: add missing crystallizes column to SELECT queries and remove duplicate

- Remove duplicate crystallizes column from schema.go
- Add crystallizes to SELECT in transaction.go SearchIssues
- Add crystallizes to SELECT in ready.go GetReadyWork and GetNewlyUnblockedByClose
- Add crystallizes to SELECT in labels.go GetIssuesByLabel
- Add missing placeholder in issues.go INSERT VALUES
- Update migrations_test.go schema to include crystallizes column

Fixes test failures caused by schema/query column count mismatches.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/storage/sqlite/transaction.go

@@ -1259,7 +1259,7 @@ func (t *sqliteTxStorage) SearchIssues(ctx context.Context, query string, filter
 		       created_at, created_by, owner, updated_at, closed_at, external_ref,
 		       compaction_level, compacted_at, compacted_at_commit, original_size, source_repo, close_reason,
 		       deleted_at, deleted_by, delete_reason, original_type,
-		       sender, ephemeral, pinned, is_template,
+		       sender, ephemeral, pinned, is_template, crystallizes,
 		       await_type, await_id, timeout_ns, waiters
 		FROM issues
 		%s