Add Edge Agent implementation for gateway connection lifecycle, agent commands, Shelly device discovery, relay control, and WebSocket communication with broker. Include unit tests for critical flows.

services/nginx/app/tests/Unit/Selfserve/EdgeGatewaySchemaBootstrapTest.php

@@ -0,0 +1,24 @@
+<?php
+
+it('defines the edge gateway runtime schema bootstrap tables', function (): void {
+    $bootstrapContent = file_get_contents(app_path('classes/edge_gateway_schema_bootstrap.php'));
+
+    expect($bootstrapContent)->not->toBeFalse();
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateways');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_claim_tokens');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_device_inventory');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_relay_bindings');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_command_jobs');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_update_jobs');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_shell_sessions');
+    expect($bootstrapContent)->toContain('CREATE TABLE IF NOT EXISTS edge_gateway_audit_logs');
+});
+
+it('stores edge gateway heartbeats, bindings, and shell transcript data', function (): void {
+    $bootstrapContent = file_get_contents(app_path('classes/edge_gateway_schema_bootstrap.php'));
+
+    expect($bootstrapContent)->toContain('last_heartbeat_at DATETIME NULL');
+    expect($bootstrapContent)->toContain('channel INT NOT NULL DEFAULT 0');
+    expect($bootstrapContent)->toContain('transcript_text LONGTEXT NULL');
+    expect($bootstrapContent)->toContain('context_json JSON NULL');
+});