Simplify change tracking

inventory-server/db/metrics-schema.sql

@@ -1,44 +1,6 @@
 -- Disable foreign key checks
 SET FOREIGN_KEY_CHECKS = 0;
 
--- Create metric status tracking table
-CREATE TABLE IF NOT EXISTS product_metric_status (
-    pid BIGINT NOT NULL,
-    last_calculated_at TIMESTAMP NULL,
-    needs_recalculation BOOLEAN DEFAULT TRUE,
-    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-    PRIMARY KEY (pid),
-    INDEX idx_needs_recalc (needs_recalculation),
-    INDEX idx_last_calc (last_calculated_at),
-    FOREIGN KEY (pid) REFERENCES products(pid) ON DELETE CASCADE
-) ENGINE=InnoDB;
-
--- Add triggers for metric recalculation
-DROP TRIGGER IF EXISTS orders_after_insert_update;
-CREATE TRIGGER orders_after_insert_update AFTER INSERT ON orders FOR EACH ROW 
-    INSERT INTO product_metric_status (pid, needs_recalculation)
-    VALUES (NEW.pid, TRUE)
-    ON DUPLICATE KEY UPDATE 
-        needs_recalculation = TRUE,
-        updated_at = CURRENT_TIMESTAMP;
-
-DROP TRIGGER IF EXISTS purchase_orders_after_insert_update;
-CREATE TRIGGER purchase_orders_after_insert_update AFTER INSERT ON purchase_orders FOR EACH ROW 
-    INSERT INTO product_metric_status (pid, needs_recalculation)
-    VALUES (NEW.pid, TRUE)
-    ON DUPLICATE KEY UPDATE 
-        needs_recalculation = TRUE,
-        updated_at = CURRENT_TIMESTAMP;
-
-DROP TRIGGER IF EXISTS products_after_insert_update;
-CREATE TRIGGER products_after_insert_update AFTER INSERT ON products FOR EACH ROW 
-    INSERT INTO product_metric_status (pid, needs_recalculation)
-    VALUES (NEW.pid, TRUE)
-    ON DUPLICATE KEY UPDATE 
-        needs_recalculation = TRUE,
-        updated_at = CURRENT_TIMESTAMP;
-
 -- Temporary tables for batch metrics processing
 CREATE TABLE IF NOT EXISTS temp_sales_metrics (
     pid BIGINT NOT NULL,