Add clinical device registry, browser wedge scan, and local agent API.

Branch-scoped Care devices with hashed agent tokens, patient barcode lookup/labels, and provenance-aware vitals from a minimal device agent (Pro for agent hardware; wedge free).

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/2026_07_17_140000_create_care_devices_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('care_devices', function (Blueprint $table) {
+            $table->id();
+            $table->string('owner_ref')->index();
+            $table->foreignId('organization_id')->constrained('care_organizations')->cascadeOnDelete();
+            $table->foreignId('branch_id')->nullable()->constrained('care_branches')->nullOnDelete();
+            $table->string('name');
+            $table->string('type'); // barcode_scanner, thermometer, …
+            $table->string('status')->default('offline'); // active, offline, disabled
+            $table->string('connection_mode')->default('manual'); // browser_wedge, agent, web_bluetooth, manual
+            $table->string('device_token_hash')->nullable()->unique();
+            $table->timestamp('last_seen_at')->nullable();
+            $table->json('metadata')->nullable();
+            $table->timestamps();
+            $table->softDeletes();
+
+            $table->index(['organization_id', 'branch_id', 'status']);
+            $table->index(['owner_ref', 'type']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('care_devices');
+    }
+};

database/migrations/2026_07_17_140100_add_device_provenance_to_care_vital_signs.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('care_vital_signs', function (Blueprint $table) {
+            $table->string('source')->default('manual')->after('recorded_at'); // manual, device, import
+            $table->foreignId('device_id')->nullable()->after('source')
+                ->constrained('care_devices')->nullOnDelete();
+            $table->json('raw_payload')->nullable()->after('device_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('care_vital_signs', function (Blueprint $table) {
+            $table->dropConstrainedForeignId('device_id');
+            $table->dropColumn(['source', 'raw_payload']);
+        });
+    }
+};