Add shift templates, unit duty roster grid, and Nursing Services hub.

Phase 3 staff management: real shift entities, week roster linked to temporary assignments, and a nursing ops module surface (registry, today’s allocation, unit shortcuts).

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

database/migrations/2026_07_20_180000_create_care_shifts_and_roster.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Phase 3: org shift templates + duty roster entries (unit × date × shift).
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('care_shifts', function (Blueprint $table) {
+            $table->id();
+            $table->string('owner_ref')->index();
+            $table->foreignId('organization_id')->constrained('care_organizations')->cascadeOnDelete();
+            $table->string('code'); // day, evening, night, custom…
+            $table->string('label');
+            $table->time('start_time');
+            $table->time('end_time');
+            $table->string('color')->nullable();
+            $table->unsignedSmallInteger('sort_order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+            $table->softDeletes();
+
+            $table->unique(['organization_id', 'code']);
+            $table->index(['organization_id', 'is_active']);
+        });
+
+        Schema::create('care_roster_entries', function (Blueprint $table) {
+            $table->id();
+            $table->string('owner_ref')->index();
+            $table->foreignId('organization_id')->constrained('care_organizations')->cascadeOnDelete();
+            $table->foreignId('care_unit_id')->constrained('care_care_units')->cascadeOnDelete();
+            $table->foreignId('shift_id')->constrained('care_shifts')->cascadeOnDelete();
+            $table->foreignId('member_id')->constrained('care_members')->cascadeOnDelete();
+            $table->date('duty_date');
+            /** scheduled | confirmed | completed | cancelled */
+            $table->string('status')->default('scheduled');
+            $table->foreignId('staff_assignment_id')->nullable()
+                ->constrained('care_staff_assignments')->nullOnDelete();
+            $table->text('notes')->nullable();
+            $table->string('created_by')->nullable();
+            $table->timestamps();
+            $table->softDeletes();
+
+            $table->unique(['care_unit_id', 'shift_id', 'member_id', 'duty_date'], 'care_roster_unit_shift_member_date');
+            $table->index(['care_unit_id', 'duty_date']);
+            $table->index(['member_id', 'duty_date']);
+            $table->index(['organization_id', 'duty_date']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('care_roster_entries');
+        Schema::dropIfExists('care_shifts');
+    }
+};