Fix line/subline regressions, add in AI validation tracking and improve AI results dialog

inventory-server/db/setup-schema.sql

@@ -23,6 +23,20 @@ CREATE TABLE IF NOT EXISTS templates (
     UNIQUE(company, product_type)
 );
 
+-- AI Validation Performance Tracking
+CREATE TABLE IF NOT EXISTS ai_validation_performance (
+    id SERIAL PRIMARY KEY,
+    prompt_length INTEGER NOT NULL,
+    product_count INTEGER NOT NULL,
+    start_time TIMESTAMP WITH TIME ZONE NOT NULL,
+    end_time TIMESTAMP WITH TIME ZONE NOT NULL,
+    duration_seconds DECIMAL(10,2) GENERATED ALWAYS AS (EXTRACT(EPOCH FROM (end_time - start_time))) STORED,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create index on prompt_length for efficient querying
+CREATE INDEX IF NOT EXISTS idx_ai_validation_prompt_length ON ai_validation_performance(prompt_length);
+
 -- Function to update the updated_at timestamp
 CREATE OR REPLACE FUNCTION update_updated_at_column()
 RETURNS TRIGGER AS $$