fix(keyword-routing): resolve i18n, error handling, and observability issues

drizzle/0106_stale_demogoblin.sql

@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS "keyword_routing_rules" (
+	"id" serial PRIMARY KEY NOT NULL,
+	"keyword" varchar(500) NOT NULL,
+	"source_model" varchar(128),
+	"target_model" varchar(128) NOT NULL,
+	"case_sensitive" boolean DEFAULT true NOT NULL,
+	"priority" integer DEFAULT 0 NOT NULL,
+	"description" text,
+	"is_enabled" boolean DEFAULT true NOT NULL,
+	"created_at" timestamp with time zone DEFAULT now(),
+	"updated_at" timestamp with time zone DEFAULT now()
+);
+--> statement-breakpoint
+ALTER TABLE "system_settings" ADD COLUMN IF NOT EXISTS "enable_keyword_model_routing" boolean DEFAULT false NOT NULL;--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "idx_keyword_routing_rules_enabled" ON "keyword_routing_rules" USING btree ("is_enabled","priority");--> statement-breakpoint
+CREATE INDEX IF NOT EXISTS "idx_keyword_routing_rules_created_at" ON "keyword_routing_rules" USING btree ("created_at");