better filtering and searching

migrations/012_create_saved_filters.sql

@@ -0,0 +1,15 @@
+-- Create saved_filters table for storing user's custom search filters
+CREATE TABLE IF NOT EXISTS saved_filters (
+    filter_id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT NOT NULL,
+    filter_name VARCHAR(100) NOT NULL,
+    filter_criteria JSON NOT NULL,
+    is_default BOOLEAN DEFAULT FALSE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE,
+    UNIQUE KEY unique_user_filter_name (user_id, filter_name)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Create index for faster lookups
+CREATE INDEX idx_user_filters ON saved_filters(user_id, is_default);