feat: add has_elevator to Address, contact/access fields to AddressAssignment

- Address: has_elevator (bool) column for building elevator status
- AddressAssignment: name_on_door, email, phone, floor, door columns
  for context-specific contact and access info
- AddressAssignment: effective_floor/effective_door accessors
  (assignment overrides base address)

database/migrations/create_blax_address_tables.php.stub

@@ -76,6 +76,10 @@ return new class extends Migration
             // Altitude in metres above mean sea level (AMSL). Positive = above, negative = below.
             $table->decimal('altitude', 10, 2)->nullable();
 
+            // ── Building amenities ───────────────────────────────────
+            // Whether the building has an elevator (relevant for moving, deliveries).
+            $table->boolean('has_elevator')->default(false);
+
             // ── Additional properties ───────────────────────────────
             // Free-form notes (e.g. delivery instructions, landmark descriptions).
             $table->text('notes')->nullable();
@@ -187,6 +191,28 @@ return new class extends Migration
             // Optional human-readable label.
             $table->string('label')->nullable();
 
+            // ── Contact / access overrides ──────────────────────────
+            // These let the assignment specify WHO to contact and WHERE
+            // exactly within the building, independent of the base address.
+            // The address stays generic ("Main Street 5, 1010 Vienna")
+            // while the assignment adds context ("3rd floor, door 12, ring Müller").
+
+            // Name on the door / bell / intercom.
+            $table->string('name_on_door')->nullable();
+
+            // Contact email for this specific assignment.
+            $table->string('email')->nullable();
+
+            // Contact phone for this specific assignment.
+            $table->string('phone')->nullable();
+
+            // Floor override (when the base address doesn't specify one,
+            // or this assignment targets a different floor).
+            $table->string('floor')->nullable();
+
+            // Door / apartment / unit number override.
+            $table->string('door')->nullable();
+
             // ── Extra data ──────────────────────────────────────────
             $table->json('meta')->nullable();
 

src/Models/Address.php

@@ -28,6 +28,7 @@ use Illuminate\Database\Eloquent\SoftDeletes;
  * @property float|null  $latitude     – Decimal degrees (−90 … +90)
  * @property float|null  $longitude    – Decimal degrees (−180 … +180)
  * @property float|null  $altitude     – Metres AMSL (positive = above, negative = below)
+ * @property bool        $has_elevator – Whether the building has an elevator
  * @property string|null $notes        – Free-form notes / delivery instructions
  * @property object|null $meta         – Arbitrary JSON data
  * @property \Carbon\Carbon $created_at
@@ -60,6 +61,7 @@ class Address extends Model
         'latitude',
         'longitude',
         'altitude',
+        'has_elevator',
         'notes',
         'meta',
     ];
@@ -70,8 +72,9 @@ class Address extends Model
     protected $casts = [
         'latitude'  => 'float',
         'longitude' => 'float',
-        'altitude'  => 'float',
-        'meta'      => 'object',
+        'altitude'      => 'float',
+        'has_elevator'  => 'boolean',
+        'meta'          => 'object',
     ];
 
     /*

src/Models/AddressAssignment.php

@@ -25,6 +25,11 @@ use Illuminate\Database\Eloquent\Model;
  * @property int                        $assignable_id    – Morph ID of the consuming model
  * @property string|null                $role             – Context-specific purpose ("pickup", "delivery", …)
  * @property string|null                $label            – Free-text label
+ * @property string|null                $name_on_door     – Name on door / bell / intercom
+ * @property string|null                $email            – Contact email for this assignment
+ * @property string|null                $phone            – Contact phone for this assignment
+ * @property string|null                $floor            – Floor override for this assignment
+ * @property string|null                $door             – Door / apartment / unit override
  * @property object|null                $meta             – Arbitrary JSON data
  * @property \Carbon\Carbon             $created_at
  * @property \Carbon\Carbon             $updated_at
@@ -42,6 +47,11 @@ class AddressAssignment extends Model
         'assignable_id',
         'role',
         'label',
+        'name_on_door',
+        'email',
+        'phone',
+        'floor',
+        'door',
         'meta',
     ];
 
@@ -114,6 +124,28 @@ class AddressAssignment extends Model
         return $this->morphTo();
     }
 
+    /*
+    |--------------------------------------------------------------------------
+    | Accessors — effective values (assignment overrides base address)
+    |--------------------------------------------------------------------------
+    */
+
+    /**
+     * The effective floor: assignment's floor if set, otherwise the base address's floor.
+     */
+    public function getEffectiveFloorAttribute(): ?string
+    {
+        return $this->floor ?? $this->addressLink?->address?->floor;
+    }
+
+    /**
+     * The effective door/room: assignment's door if set, otherwise the base address's room.
+     */
+    public function getEffectiveDoorAttribute(): ?string
+    {
+        return $this->door ?? $this->addressLink?->address?->room;
+    }
+
     /*
     |--------------------------------------------------------------------------
     | Scopes