feat: expand companion platform, device controls, and memoir workflows

Add customer and operator login, BLE provisioning, device fleet controls, call memory, memoir generation, and refreshed family and maintenance portals. Include API contracts, migrations, firmware sources, tests, assets, and deployment documentation.

firmware/echoear-platform-agent/tests/network-reconnect-host.cjs

@@ -0,0 +1,5 @@
+// Compile the production network driver against SDK spies; no firmware logic is copied.
+const fs = require('node:fs'), path = require('node:path');
+const source = fs.readFileSync(path.join(__dirname, '../main/network.c'), 'utf8');
+const harness = fs.readFileSync(path.join(__dirname, 'network-reconnect-host.c'), 'utf8');
+process.stdout.write(harness.replace('/* PRODUCTION_SOURCE */', source.replace(/^#include[^\n]*$/gm, '')));