fix: remove semicolons from SQL comments that broke schema initializer

The ClickHouseSchemaInitializer splits on semicolons before filtering
comments, so semicolons inside comment text created invalid statements.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/resources/clickhouse/init.sql

@@ -228,8 +228,8 @@ FROM executions
 GROUP BY tenant_id, application_id, route_id, bucket, environment;
 
 -- stats_1m_processor (per-processor-type)
--- Migration: count() double-counted duplicate inserts; replaced with uniq(execution_id).
--- DROP + CREATE ensures schema migration; backfill rebuilds from raw data on startup.
+-- Migration: replaced count() with uniq(execution_id) to deduplicate
+-- DROP + CREATE + backfill rebuilds from raw data on startup
 
 DROP VIEW IF EXISTS stats_1m_processor_mv;
 DROP TABLE IF EXISTS stats_1m_processor;