refactor: rename "Main" organization to "Default" across codebase

"Default" better communicates the role of the primary organization —
it is the fallback context, not necessarily the most important one.

Renames: is_main → is_default column, Organization::main() → Organization::default(),
factory state main() → default(), and all references in app code, migrations,
factories, seeders, tests, and docs.

Author: David-Crty

app/Actions/Fortify/CreateNewUser.php

@@ -48,10 +48,10 @@ public function create(array $input): User
 
         $createDemoBackup = ! empty($input['create_demo_backup']);
 
-        // Ensure main org exists (migration creates it, but handle fresh install)
-        $mainOrg = Organization::firstOrCreate(
-            ['is_main' => true],
-            ['name' => 'Main']
+        // Ensure default org exists (migration creates it, but handle fresh install)
+        $defaultOrg = Organization::firstOrCreate(
+            ['is_default' => true],
+            ['name' => 'Default']
         );
 
         // First user is always super_admin
@@ -64,7 +64,7 @@ public function create(array $input): User
         ]);
 
         // Attach to main org as admin
-        $user->organizations()->attach($mainOrg->id, ['role' => UserRole::Admin->value]);
+        $user->organizations()->attach($defaultOrg->id, ['role' => UserRole::Admin->value]);
 
         if ($createDemoBackup) {
             try {

app/Http/Middleware/DemoModeMiddleware.php

@@ -64,7 +64,7 @@ protected function ensureDemoUserExists(): void
         );
 
         $user->organizations()->syncWithoutDetaching([
-            Organization::main()->id => ['role' => UserRole::Demo->value],
+            Organization::default()->id => ['role' => UserRole::Demo->value],
         ]);
     }
 }

app/Http/Resources/OrganizationResource.php

@@ -21,7 +21,7 @@ public function toArray(Request $request): array
         return [
             'id' => $this->id,
             'name' => $this->name,
-            'is_main' => $this->is_main,
+            'is_default' => $this->is_default,
             'role' => $this->whenPivotLoaded('organization_user', fn () => $this->pivot->role), // @phpstan-ignore property.notFound
         ];
     }

app/Livewire/Configuration/Organization.php

@@ -51,7 +51,7 @@ public function organizations(): Collection
             'volumes' => fn ($q) => $q->withoutGlobalScope(OrganizationScope::class),
             'agents' => fn ($q) => $q->withoutGlobalScope(OrganizationScope::class),
         ])
-            ->orderByDesc('is_main')
+            ->orderByDesc('is_default')
             ->orderBy('name')
             ->get();
     }

app/Livewire/OrganizationSwitcher.php

@@ -39,10 +39,10 @@ public function getOrganizations(): array
         $user = auth()->user();
 
         if ($user->isSuperAdmin()) {
-            return Organization::orderByDesc('is_main')->orderBy('name')->get(['id', 'name'])->toArray();
+            return Organization::orderByDesc('is_default')->orderBy('name')->get(['id', 'name'])->toArray();
         }
 
-        return $user->organizations()->orderByDesc('organizations.is_main')->orderBy('organizations.name')->get(['organizations.id', 'organizations.name'])->toArray();
+        return $user->organizations()->orderByDesc('organizations.is_default')->orderBy('organizations.name')->get(['organizations.id', 'organizations.name'])->toArray();
     }
 
     public function render(): View

app/Mcp/Tools/ListOrganizationsTool.php

@@ -31,7 +31,7 @@ public function handle(Request $request): Response
             $active = $org->id === $currentOrgId ? ' **(active)**' : '';
             $role = $org->pivot->role ?? 'unknown';
 
-            return "- **{$org->name}** (ID: {$org->id}){$active}\n  Role: {$role}".($org->is_main ? ' | Main organization' : '');
+            return "- **{$org->name}** (ID: {$org->id}){$active}\n  Role: {$role}".($org->is_default ? ' | Default organization' : '');
         });
 
         return Response::text("Your Organizations ({$orgs->count()}):\n\n".implode("\n\n", $lines->all()));

app/Models/Organization.php

@@ -16,7 +16,7 @@
 /**
  * @property string $id
  * @property string $name
- * @property bool $is_main
+ * @property bool $is_default
  * @property Carbon|null $created_at
  * @property Carbon|null $updated_at
  * @property-read Collection<int, User> $users
@@ -44,13 +44,13 @@ class Organization extends Model
 
     protected $fillable = [
         'name',
-        'is_main',
+        'is_default',
     ];
 
     protected function casts(): array
     {
         return [
-            'is_main' => 'boolean',
+            'is_default' => 'boolean',
         ];
     }
 
@@ -95,11 +95,11 @@ public function sshConfigs(): HasMany
     }
 
     /**
-     * Get the main organization.
+     * Get the default organization.
      */
-    public static function main(): self
+    public static function default(): self
     {
-        return static::where('is_main', true)->firstOrFail();
+        return static::where('is_default', true)->firstOrFail();
     }
 
     /**

app/Policies/OrganizationPolicy.php

@@ -34,20 +34,20 @@ public function update(User $user, Organization $organization): bool
             return false;
         }
 
-        // Main org name cannot be changed
-        return ! $organization->is_main;
+        // Default org name cannot be changed
+        return ! $organization->is_default;
     }
 
     /**
      * Determine whether the user can delete the organization.
-     * Only super admins can delete non-main orgs.
+     * Only super admins can delete non-default orgs.
      */
     public function delete(User $user, Organization $organization): bool
     {
         if (! $user->isSuperAdmin()) {
             return false;
         }
 
-        return ! $organization->is_main;
+        return ! $organization->is_default;
     }
 }

app/Services/CurrentOrganization.php

@@ -115,9 +115,9 @@ public function resolveForUser(User $user, ?string $cookieOrgId = null): void
             return;
         }
 
-        // 3. Super admins with no membership fall back to main org
+        // 3. Super admins with no membership fall back to default org
         if ($user->isSuperAdmin()) {
-            $this->switchTo(Organization::main());
+            $this->switchTo(Organization::default());
 
             return;
         }

app/Services/OAuthService.php

@@ -219,7 +219,7 @@ private function resolveDefaultOrganization(): Organization
             }
         }
 
-        return Organization::main();
+        return Organization::default();
     }
 
     /**