diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9f1d39..eed2e15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -35,6 +35,13 @@ Todas as alterações materiais são registadas neste ficheiro. O formato segue
 - Associação do utilizador local ao ID Snipe-IT confirmada durante a entrega.
 - Bloqueios temporais de equipamento criados a partir de incidentes e considerados pelo motor de disponibilidade.
 - Tratamento e auditoria de falhas parciais em movimentos com vários equipamentos.
+- Gestão administrativa de utilizadores, perfis, estado, departamento, associação Snipe-IT e palavra-passe.
+- Regras de reserva editáveis com antecedência, duração, margem, prazo de aprovação e limite de equipamentos.
+- Buffers temporais por item e restrição GiST atualizada para garantir margens também sob concorrência.
+- Calendário global com identificação do requisitante e autorização por perfil.
+- Relatórios operacionais, métricas por dimensão e exportação CSV detalhada.
+- Consulta de auditoria filtrável e paginada para administradores e auditores.
+- Modelos editáveis para email e notificações internas com variáveis funcionais.
 
 ### Alterado
 
@@ -45,12 +52,16 @@ Todas as alterações materiais são registadas neste ficheiro. O formato segue
 - SSR de desenvolvimento ligado internamente de PHP para o serviço `node`, com o hostname Docker autorizado no Vite.
 - Catálogo sem período passa a distinguir equipamentos apenas requisitáveis; quando um período é selecionado, apresenta exclusivamente equipamentos livres nesse intervalo.
 - Máquina de estados passa a admitir incidentes durante preparação/utilização, atrasos e resolução por devolução.
+- Formulário de requisição apresenta as políticas atuais e o serviço de domínio volta a validá-las antes da transação.
+- Notificações passam a obter assunto e mensagem dos modelos administrativos, preservando defaults seguros.
 
 ### Segurança
 
 - Registo público desativado.
 - Variáveis para tokens Snipe-IT separados e credenciais Entra ID documentadas sem valores.
 - Rotas operacionais protegidas por Gate e verificação de perfil também no serviço de domínio; escritas externas não fazem retry automático.
+- Exportação CSV neutraliza células iniciadas por caracteres de fórmula e limita cada relatório a 366 dias.
+- Gestão administrativa impede auto-desativação e garante pelo menos um administrador ativo.
 
 ### Verificado
 
@@ -65,3 +76,4 @@ Todas as alterações materiais são registadas neste ficheiro. O formato segue
 - Builds Vite cliente e SSR com as páginas de disponibilidade, cancelamento e calendário concluídos.
 - Migration da caixa interna de notificações aplicada em PostgreSQL 17.
 - Fluxo operacional: autorização, checkout/check-in, entrega parcial, auditoria, incidentes e bloqueios validados com API Snipe-IT simulada.
+- Administração: utilizadores, políticas, buffers, calendário global, relatórios, CSV, auditoria e modelos de notificação validados por testes funcionais.
diff --git a/README.md b/README.md
index 32ad845..eeca940 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Portal interno para consultar, requisitar, aprovar, entregar e devolver equipame
 
 ## Estado atual
 
-O projeto concluiu as **Fases 1 a 5**: fundação técnica, integração Snipe-IT, motor de reservas, aprovações e operações físicas. Estão disponíveis autenticação local, catálogo temporal, pré-reservas, conflitos, calendário pessoal, decisões e notificações, checkout/check-in Snipe-IT, área diária do operador, entrega/devolução auditada, incidentes, atrasos e bloqueios. A próxima entrega é a administração e os relatórios.
+O projeto concluiu as **Fases 1 a 6**: fundação técnica, integração Snipe-IT, reservas, aprovações, operações físicas e administração/relatórios. Inclui gestão de utilizadores e perfis, regras editáveis com margens garantidas em PostgreSQL, calendário global, métricas, exportação CSV, auditoria e modelos de email. A próxima entrega é o hardening e a entrada em produção.
 
 Consulte sempre [docs/PROJECT_STATUS.md](docs/PROJECT_STATUS.md) antes de alterar o projeto. Esse documento contém o ponto de situação, riscos e próxima tarefa recomendada.
 
diff --git a/app/Domain/Administration/Models/PortalSetting.php b/app/Domain/Administration/Models/PortalSetting.php
new file mode 100644
index 0000000..e0290a8
--- /dev/null
+++ b/app/Domain/Administration/Models/PortalSetting.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Domain\Administration\Models;
+
+use App\Models\User;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class PortalSetting extends Model
+{
+    public $incrementing = false;
+
+    protected $primaryKey = 'key';
+
+    protected $keyType = 'string';
+
+    protected $fillable = ['key', 'value', 'description', 'updated_by'];
+
+    protected function casts(): array
+    {
+        return ['value' => 'json'];
+    }
+
+    /** @return BelongsTo<User, $this> */
+    public function updatedBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'updated_by');
+    }
+}
diff --git a/app/Domain/Administration/Services/NotificationTemplateService.php b/app/Domain/Administration/Services/NotificationTemplateService.php
new file mode 100644
index 0000000..cb6345f
--- /dev/null
+++ b/app/Domain/Administration/Services/NotificationTemplateService.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace App\Domain\Administration\Services;
+
+use App\Domain\Administration\Models\PortalSetting;
+use App\Domain\Audit\Models\AuditLog;
+use App\Domain\Reservations\Models\Reservation;
+use App\Models\User;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+
+final class NotificationTemplateService
+{
+    /** @return array<string, array{label:string,subject:string,message:string}> */
+    public function definitions(): array
+    {
+        return [
+            'submitted' => [
+                'label' => 'Nova requisição',
+                'subject' => 'Nova requisição {reference}',
+                'message' => '{requester} submeteu {reference} para decisão. Período: {starts_at} — {ends_at}.',
+            ],
+            'information_provided' => [
+                'label' => 'Esclarecimentos prestados',
+                'subject' => 'Resposta recebida para {reference}',
+                'message' => '{requester} prestou esclarecimentos para {reference}.',
+            ],
+            'approved' => [
+                'label' => 'Requisição aprovada',
+                'subject' => 'Requisição {reference} aprovada',
+                'message' => 'A sua requisição {reference} foi aprovada.',
+            ],
+            'rejected' => [
+                'label' => 'Requisição rejeitada',
+                'subject' => 'Requisição {reference} rejeitada',
+                'message' => 'A sua requisição {reference} foi rejeitada.',
+            ],
+            'information_requested' => [
+                'label' => 'Pedido de esclarecimentos',
+                'subject' => 'Esclarecimentos necessários para {reference}',
+                'message' => 'O aprovador pediu informações adicionais para {reference}.',
+            ],
+            'asset_substituted' => [
+                'label' => 'Equipamento substituído',
+                'subject' => 'Equipamento alterado em {reference}',
+                'message' => 'Um equipamento de {reference} foi substituído por outro equivalente.',
+            ],
+        ];
+    }
+
+    /** @return array<string, array{subject:string,message:string}> */
+    public function templates(): array
+    {
+        return Cache::remember('portal.notification_templates', now()->addHour(), function (): array {
+            $keys = [];
+            foreach (array_keys($this->definitions()) as $event) {
+                $keys[] = "notification.{$event}.subject";
+                $keys[] = "notification.{$event}.message";
+            }
+            $stored = PortalSetting::query()
+                ->whereIn('key', $keys)
+                ->get(['key', 'value'])
+                ->mapWithKeys(fn (PortalSetting $setting): array => [$setting->key => $setting->value]);
+
+            return collect($this->definitions())->mapWithKeys(function (array $definition, string $event) use ($stored): array {
+                return [$event => [
+                    'subject' => (string) ($stored["notification.{$event}.subject"] ?? $definition['subject']),
+                    'message' => (string) ($stored["notification.{$event}.message"] ?? $definition['message']),
+                ]];
+            })->all();
+        });
+    }
+
+    /** @return array{subject:string,message:string} */
+    public function render(string $event, Reservation $reservation, ?string $comment = null): array
+    {
+        $template = $this->templates()[$event] ?? [
+            'subject' => 'Atualização da requisição {reference}',
+            'message' => 'O estado da requisição {reference} foi atualizado.',
+        ];
+        $replacements = [
+            '{reference}' => $reservation->reference,
+            '{requester}' => $reservation->requester->name,
+            '{starts_at}' => $reservation->starts_at->format('d/m/Y H:i'),
+            '{ends_at}' => $reservation->ends_at->format('d/m/Y H:i'),
+            '{comment}' => $comment ?? '',
+        ];
+
+        return [
+            'subject' => strtr($template['subject'], $replacements),
+            'message' => strtr($template['message'], $replacements),
+        ];
+    }
+
+    /** @param array<string, array{subject:string,message:string}> $templates */
+    public function update(array $templates, User $actor): void
+    {
+        DB::transaction(function () use ($templates, $actor): void {
+            $before = $this->templates();
+            foreach ($templates as $event => $template) {
+                foreach (['subject', 'message'] as $field) {
+                    PortalSetting::query()->updateOrCreate(
+                        ['key' => "notification.{$event}.{$field}"],
+                        [
+                            'value' => $template[$field],
+                            'description' => "Modelo {$field} para {$event}",
+                            'updated_by' => $actor->id,
+                        ],
+                    );
+                }
+            }
+            AuditLog::create([
+                'actor_id' => $actor->id,
+                'event' => 'settings.notification_templates_updated',
+                'before' => $before,
+                'after' => $templates,
+            ]);
+        }, 3);
+
+        Cache::forget('portal.notification_templates');
+    }
+}
diff --git a/app/Domain/Administration/Services/ReservationPolicy.php b/app/Domain/Administration/Services/ReservationPolicy.php
new file mode 100644
index 0000000..b63fc4d
--- /dev/null
+++ b/app/Domain/Administration/Services/ReservationPolicy.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace App\Domain\Administration\Services;
+
+use App\Domain\Administration\Models\PortalSetting;
+use App\Domain\Audit\Models\AuditLog;
+use App\Models\User;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+
+final class ReservationPolicy
+{
+    /** @return array<string, array{label:string,description:string,default:int,min:int,max:int,unit:string}> */
+    public function definitions(): array
+    {
+        return [
+            'reservation.min_notice_hours' => [
+                'label' => 'Antecedência mínima',
+                'description' => 'Horas mínimas entre a submissão e o início da utilização.',
+                'default' => 0, 'min' => 0, 'max' => 720, 'unit' => 'horas',
+            ],
+            'reservation.max_duration_hours' => [
+                'label' => 'Duração máxima',
+                'description' => 'Duração máxima permitida para uma requisição.',
+                'default' => 168, 'min' => 1, 'max' => 2160, 'unit' => 'horas',
+            ],
+            'reservation.turnaround_minutes' => [
+                'label' => 'Margem entre reservas',
+                'description' => 'Tempo bloqueado antes e depois da utilização para preparação e conferência.',
+                'default' => 0, 'min' => 0, 'max' => 1440, 'unit' => 'minutos',
+            ],
+            'reservation.approval_deadline_hours' => [
+                'label' => 'Prazo de aprovação',
+                'description' => 'Tempo até uma pré-reserva pendente expirar.',
+                'default' => 48, 'min' => 1, 'max' => 336, 'unit' => 'horas',
+            ],
+            'reservation.max_assets' => [
+                'label' => 'Equipamentos por requisição',
+                'description' => 'Número máximo de equipamentos no mesmo pedido.',
+                'default' => 10, 'min' => 1, 'max' => 50, 'unit' => 'equipamentos',
+            ],
+        ];
+    }
+
+    public function integer(string $key): int
+    {
+        $definitions = $this->definitions();
+        if (! isset($definitions[$key])) {
+            throw new \InvalidArgumentException("Política desconhecida: {$key}");
+        }
+
+        return $this->values()[$key] ?? $definitions[$key]['default'];
+    }
+
+    /** @return array<string, int> */
+    public function values(): array
+    {
+        return Cache::remember('portal.reservation_policy', now()->addHour(), function (): array {
+            /** @var array<string, int> $stored */
+            $stored = PortalSetting::query()
+                ->whereIn('key', array_keys($this->definitions()))
+                ->pluck('value', 'key')
+                ->map(fn (mixed $value): int => (int) $value)
+                ->all();
+
+            return collect($this->definitions())
+                ->mapWithKeys(fn (array $definition, string $key): array => [
+                    $key => $stored[$key] ?? $definition['default'],
+                ])
+                ->all();
+        });
+    }
+
+    /** @param array<string, int> $values */
+    public function update(array $values, User $actor): void
+    {
+        DB::transaction(function () use ($values, $actor): void {
+            $before = $this->values();
+            foreach ($this->definitions() as $key => $definition) {
+                PortalSetting::query()->updateOrCreate(
+                    ['key' => $key],
+                    [
+                        'value' => $values[$key],
+                        'description' => $definition['description'],
+                        'updated_by' => $actor->id,
+                    ],
+                );
+            }
+
+            AuditLog::create([
+                'actor_id' => $actor->id,
+                'event' => 'settings.reservation_policy_updated',
+                'before' => $before,
+                'after' => $values,
+            ]);
+        }, 3);
+
+        Cache::forget('portal.reservation_policy');
+    }
+}
diff --git a/app/Domain/Approvals/Services/ApprovalService.php b/app/Domain/Approvals/Services/ApprovalService.php
index 2966ef7..b6f25d6 100644
--- a/app/Domain/Approvals/Services/ApprovalService.php
+++ b/app/Domain/Approvals/Services/ApprovalService.php
@@ -141,6 +141,8 @@ class ApprovalService
                 'snipe_asset_id' => $newAsset->id,
                 'starts_at' => $lockedItem->starts_at,
                 'ends_at' => $lockedItem->ends_at,
+                'buffer_starts_at' => $lockedItem->buffer_starts_at,
+                'buffer_ends_at' => $lockedItem->buffer_ends_at,
                 'status' => ReservationItemStatus::Held,
                 'notes' => "Substitui {$original->asset_tag}: {$reason}",
             ]);
diff --git a/app/Domain/Identity/Services/UserAdministrationService.php b/app/Domain/Identity/Services/UserAdministrationService.php
new file mode 100644
index 0000000..af2073c
--- /dev/null
+++ b/app/Domain/Identity/Services/UserAdministrationService.php
@@ -0,0 +1,135 @@
+<?php
+
+namespace App\Domain\Identity\Services;
+
+use App\Domain\Audit\Models\AuditLog;
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Models\User;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Validation\ValidationException;
+
+final class UserAdministrationService
+{
+    /**
+     * @param  array{name:string,email:string,department:?string,snipe_user_id:?int,password:string,active:bool,roles:list<string>}  $data
+     */
+    public function create(User $actor, array $data): User
+    {
+        return DB::transaction(function () use ($actor, $data): User {
+            $user = User::create([
+                'name' => $data['name'],
+                'email' => $data['email'],
+                'email_verified_at' => now(),
+                'department' => $data['department'],
+                'snipe_user_id' => $data['snipe_user_id'],
+                'password' => $data['password'],
+                'active' => $data['active'],
+            ]);
+            $user->roles()->sync($this->roleIds($data['roles']));
+
+            AuditLog::create([
+                'actor_id' => $actor->id,
+                'event' => 'user.created',
+                'auditable_type' => $user->getMorphClass(),
+                'auditable_id' => $user->id,
+                'after' => $this->snapshot($user),
+            ]);
+
+            return $user->load('roles');
+        }, 3);
+    }
+
+    /**
+     * @param  array{name:string,email:string,department:?string,snipe_user_id:?int,password:?string,active:bool,roles:list<string>}  $data
+     */
+    public function update(User $user, User $actor, array $data): User
+    {
+        return DB::transaction(function () use ($user, $actor, $data): User {
+            $locked = User::query()->whereKey($user->id)->lockForUpdate()->firstOrFail();
+            $before = $this->snapshot($locked);
+            $removesAdministrator = ! in_array(RoleName::Administrator->value, $data['roles'], true);
+
+            if ($locked->id === $actor->id && (! $data['active'] || $removesAdministrator)) {
+                throw ValidationException::withMessages([
+                    'roles' => 'Não pode desativar a própria conta nem remover o seu perfil de administrador.',
+                ]);
+            }
+
+            if ((! $data['active'] || $removesAdministrator)
+                && $locked->hasRole(RoleName::Administrator)
+                && $this->activeAdministratorCount() <= 1) {
+                throw ValidationException::withMessages([
+                    'roles' => 'O portal tem de manter pelo menos um administrador ativo.',
+                ]);
+            }
+
+            $attributes = [
+                'name' => $data['name'],
+                'email' => $data['email'],
+                'department' => $data['department'],
+                'snipe_user_id' => $data['snipe_user_id'],
+                'active' => $data['active'],
+            ];
+            if (filled($data['password'])) {
+                $attributes['password'] = $data['password'];
+            }
+
+            $locked->update($attributes);
+            $locked->roles()->sync($this->roleIds($data['roles']));
+            $locked->load('roles');
+
+            AuditLog::create([
+                'actor_id' => $actor->id,
+                'event' => 'user.updated',
+                'auditable_type' => $locked->getMorphClass(),
+                'auditable_id' => $locked->id,
+                'before' => $before,
+                'after' => $this->snapshot($locked),
+                'metadata' => ['password_changed' => filled($data['password'])],
+            ]);
+
+            return $locked;
+        }, 3);
+    }
+
+    /**
+     * @param  list<string>  $roles
+     * @return list<int>
+     */
+    private function roleIds(array $roles): array
+    {
+        $ids = array_values(Role::query()
+            ->whereIn('name', $roles)
+            ->pluck('id')
+            ->map(fn (int $id): int => $id)
+            ->all());
+
+        if (count($ids) !== count(array_unique($roles))) {
+            throw ValidationException::withMessages(['roles' => 'Um ou mais perfis selecionados não existem.']);
+        }
+
+        return $ids;
+    }
+
+    private function activeAdministratorCount(): int
+    {
+        return User::query()
+            ->where('active', true)
+            ->whereHas('roles', fn ($query) => $query->where('name', RoleName::Administrator->value))
+            ->count();
+    }
+
+    /** @return array<string, mixed> */
+    private function snapshot(User $user): array
+    {
+        return [
+            'name' => $user->name,
+            'email' => $user->email,
+            'department' => $user->department,
+            'snipe_user_id' => $user->snipe_user_id,
+            'active' => $user->active,
+            'roles' => $user->roles()->orderBy('name')->pluck('name')->all(),
+        ];
+    }
+}
diff --git a/app/Domain/Reservations/Models/ReservationItem.php b/app/Domain/Reservations/Models/ReservationItem.php
index 4b05948..597962b 100644
--- a/app/Domain/Reservations/Models/ReservationItem.php
+++ b/app/Domain/Reservations/Models/ReservationItem.php
@@ -19,7 +19,7 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 class ReservationItem extends Model
 {
     protected $fillable = [
-        'reservation_id', 'snipe_asset_id', 'starts_at', 'ends_at', 'status',
+        'reservation_id', 'snipe_asset_id', 'starts_at', 'ends_at', 'buffer_starts_at', 'buffer_ends_at', 'status',
         'delivered_at', 'returned_at', 'checkout_reference', 'checkin_reference',
         'condition_out', 'condition_in', 'notes',
     ];
@@ -30,6 +30,8 @@ class ReservationItem extends Model
             'status' => ReservationItemStatus::class,
             'starts_at' => 'immutable_datetime',
             'ends_at' => 'immutable_datetime',
+            'buffer_starts_at' => 'immutable_datetime',
+            'buffer_ends_at' => 'immutable_datetime',
             'delivered_at' => 'immutable_datetime',
             'returned_at' => 'immutable_datetime',
         ];
diff --git a/app/Domain/Reservations/Services/AvailabilityService.php b/app/Domain/Reservations/Services/AvailabilityService.php
index 218afe1..4f640c9 100644
--- a/app/Domain/Reservations/Services/AvailabilityService.php
+++ b/app/Domain/Reservations/Services/AvailabilityService.php
@@ -2,24 +2,30 @@
 
 namespace App\Domain\Reservations\Services;
 
+use App\Domain\Administration\Services\ReservationPolicy;
 use App\Domain\Inventory\Models\SnipeAsset;
 use App\Domain\Reservations\Enums\ReservationItemStatus;
+use Carbon\CarbonImmutable;
 use DateTimeInterface;
 use Illuminate\Database\Eloquent\Builder;
 
 class AvailabilityService
 {
+    public function __construct(private readonly ReservationPolicy $policy) {}
+
     /** @return Builder<SnipeAsset> */
     public function availableAssets(DateTimeInterface $startsAt, DateTimeInterface $endsAt): Builder
     {
+        [$bufferStartsAt, $bufferEndsAt] = $this->bufferedPeriod($startsAt, $endsAt);
+
         return SnipeAsset::query()
             ->where('active', true)
             ->where('requestable', true)
             ->whereNull('assigned_id')
             ->whereDoesntHave('reservationItems', fn (Builder $query): Builder => $query
                 ->whereIn('status', ReservationItemStatus::blockingValues())
-                ->where('starts_at', '<', $endsAt)
-                ->where('ends_at', '>', $startsAt))
+                ->whereRaw('COALESCE(buffer_starts_at, starts_at) < ?', [$bufferEndsAt])
+                ->whereRaw('COALESCE(buffer_ends_at, ends_at) > ?', [$bufferStartsAt]))
             ->whereDoesntHave('blocks', fn (Builder $query): Builder => $query
                 ->where('starts_at', '<', $endsAt)
                 ->where('ends_at', '>', $startsAt));
@@ -35,11 +41,12 @@ class AvailabilityService
             return false;
         }
 
+        [$bufferStartsAt, $bufferEndsAt] = $this->bufferedPeriod($startsAt, $endsAt);
         $hasReservationConflict = $asset->reservationItems()
             ->whereIn('status', ReservationItemStatus::blockingValues())
             ->when($exceptReservationId, fn (Builder $query): Builder => $query->where('reservation_id', '!=', $exceptReservationId))
-            ->where('starts_at', '<', $endsAt)
-            ->where('ends_at', '>', $startsAt)
+            ->whereRaw('COALESCE(buffer_starts_at, starts_at) < ?', [$bufferEndsAt])
+            ->whereRaw('COALESCE(buffer_ends_at, ends_at) > ?', [$bufferStartsAt])
             ->exists();
 
         if ($hasReservationConflict) {
@@ -51,4 +58,15 @@ class AvailabilityService
             ->where('ends_at', '>', $startsAt)
             ->exists();
     }
+
+    /** @return array{DateTimeInterface, DateTimeInterface} */
+    public function bufferedPeriod(DateTimeInterface $startsAt, DateTimeInterface $endsAt): array
+    {
+        $margin = $this->policy->integer('reservation.turnaround_minutes');
+
+        return [
+            CarbonImmutable::instance($startsAt)->subMinutes($margin),
+            CarbonImmutable::instance($endsAt)->addMinutes($margin),
+        ];
+    }
 }
diff --git a/app/Domain/Reservations/Services/ReservationService.php b/app/Domain/Reservations/Services/ReservationService.php
index d066160..2755bad 100644
--- a/app/Domain/Reservations/Services/ReservationService.php
+++ b/app/Domain/Reservations/Services/ReservationService.php
@@ -2,6 +2,7 @@
 
 namespace App\Domain\Reservations\Services;
 
+use App\Domain\Administration\Services\ReservationPolicy;
 use App\Domain\Approvals\Models\ApprovalAction;
 use App\Domain\Audit\Models\AuditLog;
 use App\Domain\Identity\Enums\RoleName;
@@ -20,7 +21,10 @@ use Illuminate\Validation\ValidationException;
 
 class ReservationService
 {
-    public function __construct(private readonly AvailabilityService $availability) {}
+    public function __construct(
+        private readonly AvailabilityService $availability,
+        private readonly ReservationPolicy $policy,
+    ) {}
 
     /**
      * @param  array{purpose:string, usage_location:string, starts_at:string, ends_at:string, asset_ids:list<int>}  $data
@@ -29,8 +33,10 @@ class ReservationService
     {
         $startsAt = CarbonImmutable::parse($data['starts_at']);
         $endsAt = CarbonImmutable::parse($data['ends_at']);
+        $this->validatePolicy($startsAt, $endsAt, count($data['asset_ids']));
+        [$bufferStartsAt, $bufferEndsAt] = $this->availability->bufferedPeriod($startsAt, $endsAt);
 
-        $reservation = DB::transaction(function () use ($requester, $data, $startsAt, $endsAt): Reservation {
+        $reservation = DB::transaction(function () use ($requester, $data, $startsAt, $endsAt, $bufferStartsAt, $bufferEndsAt): Reservation {
             $assets = SnipeAsset::query()
                 ->whereKey($data['asset_ids'])
                 ->lockForUpdate()
@@ -58,7 +64,7 @@ class ReservationService
                 'starts_at' => $startsAt,
                 'ends_at' => $endsAt,
                 'status' => ReservationStatus::PendingApproval,
-                'approval_deadline' => now()->addHours(48),
+                'approval_deadline' => now()->addHours($this->policy->integer('reservation.approval_deadline_hours')),
             ]);
 
             foreach ($assets as $asset) {
@@ -66,6 +72,8 @@ class ReservationService
                     'snipe_asset_id' => $asset->id,
                     'starts_at' => $startsAt,
                     'ends_at' => $endsAt,
+                    'buffer_starts_at' => $bufferStartsAt,
+                    'buffer_ends_at' => $bufferEndsAt,
                     'status' => ReservationItemStatus::Held,
                 ]);
             }
@@ -156,7 +164,7 @@ class ReservationService
 
             $locked->update([
                 'status' => ReservationStatus::PendingApproval,
-                'approval_deadline' => now()->addHours(48),
+                'approval_deadline' => now()->addHours($this->policy->integer('reservation.approval_deadline_hours')),
             ]);
             ApprovalAction::create([
                 'reservation_id' => $locked->id,
@@ -258,4 +266,21 @@ class ReservationService
 
         return $reference;
     }
+
+    private function validatePolicy(CarbonImmutable $startsAt, CarbonImmutable $endsAt, int $assetCount): void
+    {
+        $minNotice = $this->policy->integer('reservation.min_notice_hours');
+        $maxDuration = $this->policy->integer('reservation.max_duration_hours');
+        $maxAssets = $this->policy->integer('reservation.max_assets');
+
+        if ($startsAt->lessThan(now()->addHours($minNotice))) {
+            throw ValidationException::withMessages(['starts_at' => "A requisição exige pelo menos {$minNotice} horas de antecedência."]);
+        }
+        if ($startsAt->diffInMinutes($endsAt) > $maxDuration * 60) {
+            throw ValidationException::withMessages(['ends_at' => "A duração máxima permitida é de {$maxDuration} horas."]);
+        }
+        if ($assetCount > $maxAssets) {
+            throw ValidationException::withMessages(['asset_ids' => "Selecione no máximo {$maxAssets} equipamentos."]);
+        }
+    }
 }
diff --git a/app/Http/Controllers/Admin/NotificationTemplateController.php b/app/Http/Controllers/Admin/NotificationTemplateController.php
new file mode 100644
index 0000000..39c3bcb
--- /dev/null
+++ b/app/Http/Controllers/Admin/NotificationTemplateController.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Domain\Administration\Services\NotificationTemplateService;
+use App\Http\Controllers\Controller;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class NotificationTemplateController extends Controller
+{
+    public function edit(NotificationTemplateService $service): Response
+    {
+        return Inertia::render('admin/notification-templates', [
+            'definitions' => $service->definitions(),
+            'templates' => $service->templates(),
+            'variables' => ['{reference}', '{requester}', '{starts_at}', '{ends_at}', '{comment}'],
+        ]);
+    }
+
+    public function update(Request $request, NotificationTemplateService $service): RedirectResponse
+    {
+        $rules = [];
+        foreach (array_keys($service->definitions()) as $event) {
+            $rules["templates.{$event}.subject"] = ['required', 'string', 'max:200'];
+            $rules["templates.{$event}.message"] = ['required', 'string', 'max:2000'];
+        }
+        /** @var array{templates:array<string,array{subject:string,message:string}>} $data */
+        $data = $request->validate($rules);
+        $service->update($data['templates'], $request->user());
+
+        return back()->with('success', 'Modelos de notificação atualizados.');
+    }
+}
diff --git a/app/Http/Controllers/Admin/ReservationPolicyController.php b/app/Http/Controllers/Admin/ReservationPolicyController.php
new file mode 100644
index 0000000..11ecac0
--- /dev/null
+++ b/app/Http/Controllers/Admin/ReservationPolicyController.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Domain\Administration\Services\ReservationPolicy;
+use App\Http\Controllers\Controller;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class ReservationPolicyController extends Controller
+{
+    public function edit(ReservationPolicy $policy): Response
+    {
+        return Inertia::render('admin/reservation-policy', [
+            'definitions' => $policy->definitions(),
+            'values' => $policy->values(),
+        ]);
+    }
+
+    public function update(Request $request, ReservationPolicy $policy): RedirectResponse
+    {
+        $rules = [];
+        foreach ($policy->definitions() as $key => $definition) {
+            $rules[str_replace('.', '\\.', $key)] = ['required', 'integer', 'min:'.$definition['min'], 'max:'.$definition['max']];
+        }
+        $request->validate($rules);
+        /** @var array<string, int> $values */
+        $values = collect(array_keys($policy->definitions()))
+            ->mapWithKeys(fn (string $key): array => [$key => (int) $request->all()[$key]])
+            ->all();
+        $policy->update($values, $request->user());
+
+        return back()->with('success', 'Regras de reserva atualizadas e aplicadas a novos pedidos.');
+    }
+}
diff --git a/app/Http/Controllers/Admin/UserController.php b/app/Http/Controllers/Admin/UserController.php
new file mode 100644
index 0000000..29e746b
--- /dev/null
+++ b/app/Http/Controllers/Admin/UserController.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Domain\Identity\Services\UserAdministrationService;
+use App\Http\Controllers\Controller;
+use App\Models\User;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
+use Illuminate\Validation\Rules\Password;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class UserController extends Controller
+{
+    public function index(Request $request): Response
+    {
+        $filters = $request->validate([
+            'search' => ['nullable', 'string', 'max:100'],
+            'role' => ['nullable', Rule::enum(RoleName::class)],
+            'status' => ['nullable', Rule::in(['active', 'inactive'])],
+        ]);
+
+        return Inertia::render('admin/users/index', [
+            'users' => User::query()
+                ->with('roles:id,name,description')
+                ->when($filters['search'] ?? null, fn ($query, string $search) => $query
+                    ->where(fn ($query) => $query
+                        ->where('name', 'like', "%{$search}%")
+                        ->orWhere('email', 'like', "%{$search}%")
+                        ->orWhere('department', 'like', "%{$search}%")))
+                ->when($filters['role'] ?? null, fn ($query, string $role) => $query
+                    ->whereHas('roles', fn ($query) => $query->where('name', $role)))
+                ->when(($filters['status'] ?? null) === 'active', fn ($query) => $query->where('active', true))
+                ->when(($filters['status'] ?? null) === 'inactive', fn ($query) => $query->where('active', false))
+                ->orderBy('name')
+                ->paginate(20)
+                ->withQueryString(),
+            'roles' => Role::query()->orderBy('name')->get(['id', 'name', 'description']),
+            'filters' => $filters,
+        ]);
+    }
+
+    public function store(Request $request, UserAdministrationService $service): RedirectResponse
+    {
+        $data = $this->validatedData($request, null);
+        $user = $service->create($request->user(), $data);
+
+        return back()->with('success', "Utilizador {$user->name} criado.");
+    }
+
+    public function update(Request $request, User $user, UserAdministrationService $service): RedirectResponse
+    {
+        $data = $this->validatedData($request, $user);
+        $service->update($user, $request->user(), $data);
+
+        return back()->with('success', "Utilizador {$user->name} atualizado.");
+    }
+
+    /**
+     * @return array{name:string,email:string,department:?string,snipe_user_id:?int,password:?string,active:bool,roles:list<string>}
+     */
+    private function validatedData(Request $request, ?User $user): array
+    {
+        $roleNames = array_map(fn (RoleName $role): string => $role->value, RoleName::cases());
+        /** @var array{name:string,email:string,department:?string,snipe_user_id:?int,password:?string,active:bool,roles:list<string>} $data */
+        $data = $request->validate([
+            'name' => ['required', 'string', 'max:255'],
+            'email' => ['required', 'email', 'max:255', Rule::unique('users', 'email')->ignore($user?->id)],
+            'department' => ['nullable', 'string', 'max:255'],
+            'snipe_user_id' => ['nullable', 'integer', 'min:1'],
+            'password' => [$user === null ? 'required' : 'nullable', 'string', Password::min(12)],
+            'active' => ['required', 'boolean'],
+            'roles' => ['required', 'array', 'min:1'],
+            'roles.*' => ['required', 'string', 'distinct', Rule::in($roleNames)],
+        ]);
+
+        return $data;
+    }
+}
diff --git a/app/Http/Controllers/AuditController.php b/app/Http/Controllers/AuditController.php
new file mode 100644
index 0000000..4842e25
--- /dev/null
+++ b/app/Http/Controllers/AuditController.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Domain\Audit\Models\AuditLog;
+use App\Models\User;
+use Carbon\CarbonImmutable;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class AuditController extends Controller
+{
+    public function index(Request $request): Response
+    {
+        $filters = $request->validate([
+            'event' => ['nullable', 'string', 'max:100'],
+            'actor_id' => ['nullable', 'integer', 'exists:users,id'],
+            'date_from' => ['nullable', 'date'],
+            'date_to' => ['nullable', 'date', 'after_or_equal:date_from'],
+        ]);
+
+        return Inertia::render('audit/index', [
+            'logs' => AuditLog::query()
+                ->with('actor:id,name,email')
+                ->when($filters['event'] ?? null, fn ($query, string $event) => $query->where('event', 'like', "%{$event}%"))
+                ->when($filters['actor_id'] ?? null, fn ($query, int $actorId) => $query->where('actor_id', $actorId))
+                ->when($filters['date_from'] ?? null, fn ($query, string $date) => $query->where('created_at', '>=', $date.' 00:00:00'))
+                ->when($filters['date_to'] ?? null, fn ($query, string $date) => $query->where('created_at', '<', CarbonImmutable::parse($date)->addDay()))
+                ->latest('created_at')
+                ->paginate(50)
+                ->withQueryString(),
+            'actors' => User::query()->whereHas('roles')->orderBy('name')->get(['id', 'name']),
+            'events' => AuditLog::query()->distinct()->orderBy('event')->pluck('event'),
+            'filters' => $filters,
+        ]);
+    }
+}
diff --git a/app/Http/Controllers/GlobalCalendarController.php b/app/Http/Controllers/GlobalCalendarController.php
new file mode 100644
index 0000000..885258f
--- /dev/null
+++ b/app/Http/Controllers/GlobalCalendarController.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Domain\Reservations\Models\Reservation;
+use Carbon\CarbonImmutable;
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+use Inertia\Response;
+
+class GlobalCalendarController extends Controller
+{
+    public function __invoke(Request $request): Response
+    {
+        $filters = $request->validate(['month' => ['nullable', 'date_format:Y-m']]);
+        $month = isset($filters['month'])
+            ? CarbonImmutable::createFromFormat('!Y-m', $filters['month'])
+            : now()->startOfMonth();
+
+        return Inertia::render('reservations/calendar', [
+            'scope' => 'global',
+            'month' => $month->format('Y-m'),
+            'reservations' => Reservation::query()
+                ->with(['requester:id,name,department', 'items.asset:id,name,asset_tag'])
+                ->where('starts_at', '<', $month->addMonth())
+                ->where('ends_at', '>', $month)
+                ->orderBy('starts_at')
+                ->get(),
+        ]);
+    }
+}
diff --git a/app/Http/Controllers/ReportController.php b/app/Http/Controllers/ReportController.php
new file mode 100644
index 0000000..a8dc214
--- /dev/null
+++ b/app/Http/Controllers/ReportController.php
@@ -0,0 +1,109 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Domain\Audit\Models\AuditLog;
+use App\Domain\Reservations\Enums\ReservationItemStatus;
+use App\Domain\Reservations\Enums\ReservationStatus;
+use App\Domain\Reservations\Models\Reservation;
+use Carbon\CarbonImmutable;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Http\Request;
+use Illuminate\Validation\ValidationException;
+use Inertia\Inertia;
+use Inertia\Response;
+use Symfony\Component\HttpFoundation\StreamedResponse;
+
+class ReportController extends Controller
+{
+    public function index(Request $request): Response
+    {
+        [$filters, $from, $to] = $this->period($request);
+        $reservations = $this->query($from, $to)->get();
+        $items = $reservations->flatMap->items->where('status', '!=', ReservationItemStatus::Cancelled);
+
+        return Inertia::render('reports/index', [
+            'filters' => $filters,
+            'summary' => [
+                'total' => $reservations->count(),
+                'completed' => $reservations->where('status', ReservationStatus::Completed)->count(),
+                'incidents' => AuditLog::query()->where('event', 'reservation.incident_reported')->whereBetween('created_at', [$from, $to])->count(),
+                'overdue' => AuditLog::query()->where('event', 'reservation.overdue')->whereBetween('created_at', [$from, $to])->count(),
+                'utilizationHours' => round($items->sum(function ($item): float {
+                    $end = $item->returned_at ?? ($item->ends_at->isPast() ? $item->ends_at : now());
+
+                    return $item->delivered_at === null ? 0 : max(0, $item->delivered_at->diffInMinutes($end) / 60);
+                }), 1),
+            ],
+            'byStatus' => $reservations->countBy(fn ($reservation): string => $reservation->status->value)->sortDesc(),
+            'byCategory' => $items->countBy(fn ($item): string => $item->asset->category_name ?? 'Sem categoria')->sortDesc()->take(10),
+            'byDepartment' => $reservations->countBy(fn ($reservation): string => $reservation->requester->department ?? 'Sem departamento')->sortDesc()->take(10),
+            'topAssets' => $items->countBy(fn ($item): string => "{$item->asset->asset_tag} — {$item->asset->name}")->sortDesc()->take(10),
+        ]);
+    }
+
+    public function export(Request $request): StreamedResponse
+    {
+        [$filters, $from, $to] = $this->period($request);
+        $reservations = $this->query($from, $to)->lazy(200);
+
+        return response()->streamDownload(function () use ($reservations): void {
+            $output = fopen('php://output', 'w');
+            if ($output === false) {
+                return;
+            }
+            fwrite($output, "\xEF\xBB\xBF");
+            fputcsv($output, ['Referência', 'Requisitante', 'Departamento', 'Estado', 'Início', 'Fim', 'Equipamentos'], ';', '"', '');
+            foreach ($reservations as $reservation) {
+                fputcsv($output, [
+                    $this->csvCell($reservation->reference),
+                    $this->csvCell($reservation->requester->name),
+                    $this->csvCell($reservation->requester->department),
+                    $this->csvCell($reservation->status->value),
+                    $reservation->starts_at->toIso8601String(),
+                    $reservation->ends_at->toIso8601String(),
+                    $this->csvCell($reservation->items->pluck('asset.asset_tag')->join(', ')),
+                ], ';', '"', '');
+            }
+            fclose($output);
+        }, "reservas-{$filters['date_from']}-{$filters['date_to']}.csv", [
+            'Content-Type' => 'text/csv; charset=UTF-8',
+        ]);
+    }
+
+    /** @return array{array{date_from:string,date_to:string},CarbonImmutable,CarbonImmutable} */
+    private function period(Request $request): array
+    {
+        $filters = $request->validate([
+            'date_from' => ['nullable', 'date'],
+            'date_to' => ['nullable', 'date', 'after_or_equal:date_from'],
+        ]);
+        $from = isset($filters['date_from']) ? CarbonImmutable::parse($filters['date_from'])->startOfDay() : now()->subDays(29)->startOfDay();
+        $to = isset($filters['date_to']) ? CarbonImmutable::parse($filters['date_to'])->endOfDay() : now()->endOfDay();
+        if ($from->diffInDays($to) > 366) {
+            throw ValidationException::withMessages(['date_to' => 'O relatório está limitado a um período máximo de 366 dias.']);
+        }
+
+        return [[
+            'date_from' => $from->toDateString(),
+            'date_to' => $to->toDateString(),
+        ], $from, $to];
+    }
+
+    /** @return Builder<Reservation> */
+    private function query(CarbonImmutable $from, CarbonImmutable $to): Builder
+    {
+        return Reservation::query()
+            ->with(['requester:id,name,department', 'items.asset:id,name,asset_tag,category_name'])
+            ->where('starts_at', '<=', $to)
+            ->where('ends_at', '>=', $from)
+            ->orderBy('starts_at');
+    }
+
+    private function csvCell(?string $value): string
+    {
+        $value ??= '';
+
+        return preg_match('/^\s*[=+\-@]/', $value) === 1 ? "'{$value}" : $value;
+    }
+}
diff --git a/app/Http/Controllers/ReservationController.php b/app/Http/Controllers/ReservationController.php
index 4c1df2a..50977c8 100644
--- a/app/Http/Controllers/ReservationController.php
+++ b/app/Http/Controllers/ReservationController.php
@@ -2,6 +2,7 @@
 
 namespace App\Http\Controllers;
 
+use App\Domain\Administration\Services\ReservationPolicy;
 use App\Domain\Inventory\Models\SnipeAsset;
 use App\Domain\Reservations\Models\Reservation;
 use App\Domain\Reservations\Services\AvailabilityService;
@@ -46,7 +47,7 @@ class ReservationController extends Controller
         ]);
     }
 
-    public function create(Request $request, AvailabilityService $availability): Response
+    public function create(Request $request, AvailabilityService $availability, ReservationPolicy $policy): Response
     {
         $period = $request->validate([
             'starts_at' => ['nullable', 'date', 'required_with:ends_at', 'after:now'],
@@ -73,6 +74,12 @@ class ReservationController extends Controller
             'selectedAssetId' => $assets->contains('id', $requestedAssetId) ? $requestedAssetId : 0,
             'period' => $period,
             'periodSelected' => $periodSelected,
+            'policy' => [
+                'minNoticeHours' => $policy->integer('reservation.min_notice_hours'),
+                'maxDurationHours' => $policy->integer('reservation.max_duration_hours'),
+                'turnaroundMinutes' => $policy->integer('reservation.turnaround_minutes'),
+                'maxAssets' => $policy->integer('reservation.max_assets'),
+            ],
         ]);
     }
 
diff --git a/app/Http/Middleware/HandleInertiaRequests.php b/app/Http/Middleware/HandleInertiaRequests.php
index b2744d4..2e7b895 100644
--- a/app/Http/Middleware/HandleInertiaRequests.php
+++ b/app/Http/Middleware/HandleInertiaRequests.php
@@ -49,6 +49,9 @@ class HandleInertiaRequests extends Middleware
                 'administer' => fn (): bool => $request->user()?->can('administer') ?? false,
                 'approveReservations' => fn (): bool => $request->user()?->can('approve-reservations') ?? false,
                 'operateInventory' => fn (): bool => $request->user()?->can('operate-inventory') ?? false,
+                'viewGlobalCalendar' => fn (): bool => $request->user()?->can('view-global-calendar') ?? false,
+                'viewReports' => fn (): bool => $request->user()?->can('view-reports') ?? false,
+                'viewAudit' => fn (): bool => $request->user()?->can('view-audit') ?? false,
             ],
             'unreadNotifications' => fn (): int => $request->user()?->unreadNotifications()->count() ?? 0,
             'sidebarOpen' => ! $request->hasCookie('sidebar_state') || $request->cookie('sidebar_state') === 'true',
diff --git a/app/Http/Requests/StoreReservationRequest.php b/app/Http/Requests/StoreReservationRequest.php
index cc7fb27..5f28f6a 100644
--- a/app/Http/Requests/StoreReservationRequest.php
+++ b/app/Http/Requests/StoreReservationRequest.php
@@ -2,7 +2,10 @@
 
 namespace App\Http\Requests;
 
+use App\Domain\Administration\Services\ReservationPolicy;
+use Carbon\CarbonImmutable;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Validator;
 
 class StoreReservationRequest extends FormRequest
 {
@@ -14,14 +17,39 @@ class StoreReservationRequest extends FormRequest
     /** @return array<string, list<string>> */
     public function rules(): array
     {
+        $maxAssets = app(ReservationPolicy::class)->integer('reservation.max_assets');
+
         return [
             'purpose' => ['required', 'string', 'min:10', 'max:2000'],
             'usage_location' => ['required', 'string', 'max:255'],
             'starts_at' => ['required', 'date', 'after:now'],
             'ends_at' => ['required', 'date', 'after:starts_at'],
-            'asset_ids' => ['required', 'array', 'min:1', 'max:10'],
+            'asset_ids' => ['required', 'array', 'min:1', "max:{$maxAssets}"],
             'asset_ids.*' => ['required', 'integer', 'distinct', 'exists:snipe_assets,id'],
             'terms_accepted' => ['accepted'],
         ];
     }
+
+    /** @return list<callable(Validator): void> */
+    public function after(): array
+    {
+        return [function (Validator $validator): void {
+            if ($validator->errors()->hasAny(['starts_at', 'ends_at'])) {
+                return;
+            }
+
+            $policy = app(ReservationPolicy::class);
+            $startsAt = CarbonImmutable::parse((string) $this->input('starts_at'));
+            $endsAt = CarbonImmutable::parse((string) $this->input('ends_at'));
+            $minNotice = $policy->integer('reservation.min_notice_hours');
+            $maxDuration = $policy->integer('reservation.max_duration_hours');
+
+            if ($startsAt->lessThan(now()->addHours($minNotice))) {
+                $validator->errors()->add('starts_at', "A requisição exige pelo menos {$minNotice} horas de antecedência.");
+            }
+            if ($startsAt->diffInMinutes($endsAt) > $maxDuration * 60) {
+                $validator->errors()->add('ends_at', "A duração máxima permitida é de {$maxDuration} horas.");
+            }
+        }];
+    }
 }
diff --git a/app/Models/User.php b/app/Models/User.php
index 04d023d..981d7d4 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -33,7 +33,7 @@ use Laravel\Fortify\TwoFactorAuthenticatable;
  * @property Carbon|null $created_at
  * @property Carbon|null $updated_at
  */
-#[Fillable(['uuid', 'name', 'email', 'password', 'department', 'snipe_user_id', 'active', 'last_login_at'])]
+#[Fillable(['uuid', 'name', 'email', 'email_verified_at', 'password', 'department', 'snipe_user_id', 'active', 'last_login_at'])]
 #[Hidden(['password', 'two_factor_secret', 'two_factor_recovery_codes', 'remember_token'])]
 class User extends Authenticatable implements PasskeyUser
 {
diff --git a/app/Notifications/ReservationDecisionNotification.php b/app/Notifications/ReservationDecisionNotification.php
index 93788d2..8f40e23 100644
--- a/app/Notifications/ReservationDecisionNotification.php
+++ b/app/Notifications/ReservationDecisionNotification.php
@@ -2,6 +2,7 @@
 
 namespace App\Notifications;
 
+use App\Domain\Administration\Services\NotificationTemplateService;
 use App\Domain\Reservations\Models\Reservation;
 use Illuminate\Bus\Queueable;
 use Illuminate\Contracts\Queue\ShouldQueue;
@@ -28,10 +29,11 @@ class ReservationDecisionNotification extends Notification implements ShouldQueu
 
     public function toMail(object $notifiable): MailMessage
     {
+        $template = $this->template();
         $message = (new MailMessage)
-            ->subject($this->subject())
+            ->subject($template['subject'])
             ->greeting("Atualização da requisição {$this->reservation->reference}")
-            ->line($this->message());
+            ->line($template['message']);
 
         if (filled($this->comment)) {
             $message->line("Comentário: {$this->comment}");
@@ -43,35 +45,21 @@ class ReservationDecisionNotification extends Notification implements ShouldQueu
     /** @return array<string, mixed> */
     public function toArray(object $notifiable): array
     {
+        $template = $this->template();
+
         return [
             'reservation_uuid' => $this->reservation->uuid,
             'reference' => $this->reservation->reference,
             'event' => $this->event,
-            'message' => $this->message(),
+            'message' => $template['message'],
             'comment' => $this->comment,
             'url' => '/requisicoes',
         ];
     }
 
-    private function subject(): string
+    /** @return array{subject:string,message:string} */
+    private function template(): array
     {
-        return match ($this->event) {
-            'approved' => "Requisição {$this->reservation->reference} aprovada",
-            'rejected' => "Requisição {$this->reservation->reference} rejeitada",
-            'information_requested' => "Esclarecimentos necessários para {$this->reservation->reference}",
-            'asset_substituted' => "Equipamento alterado em {$this->reservation->reference}",
-            default => "Atualização da requisição {$this->reservation->reference}",
-        };
-    }
-
-    private function message(): string
-    {
-        return match ($this->event) {
-            'approved' => 'A sua requisição foi aprovada.',
-            'rejected' => 'A sua requisição foi rejeitada.',
-            'information_requested' => 'O aprovador pediu informações adicionais.',
-            'asset_substituted' => 'Um equipamento da sua requisição foi substituído por outro equivalente.',
-            default => 'O estado da sua requisição foi atualizado.',
-        };
+        return app(NotificationTemplateService::class)->render($this->event, $this->reservation, $this->comment);
     }
 }
diff --git a/app/Notifications/ReservationSubmittedNotification.php b/app/Notifications/ReservationSubmittedNotification.php
index d55b98a..06d6cc5 100644
--- a/app/Notifications/ReservationSubmittedNotification.php
+++ b/app/Notifications/ReservationSubmittedNotification.php
@@ -2,6 +2,7 @@
 
 namespace App\Notifications;
 
+use App\Domain\Administration\Services\NotificationTemplateService;
 use App\Domain\Reservations\Models\Reservation;
 use Illuminate\Bus\Queueable;
 use Illuminate\Contracts\Queue\ShouldQueue;
@@ -27,28 +28,27 @@ class ReservationSubmittedNotification extends Notification implements ShouldQue
 
     public function toMail(object $notifiable): MailMessage
     {
+        $template = app(NotificationTemplateService::class)->render($this->event, $this->reservation);
+
         return (new MailMessage)
-            ->subject($this->event === 'information_provided'
-                ? "Resposta recebida para {$this->reservation->reference}"
-                : "Nova requisição {$this->reservation->reference}")
+            ->subject($template['subject'])
             ->greeting($this->event === 'information_provided'
                 ? 'O requisitante respondeu ao pedido de esclarecimentos'
                 : 'Nova requisição para aprovação')
-            ->line("{$this->reservation->requester->name} submeteu a requisição {$this->reservation->reference} para decisão.")
-            ->line("Período: {$this->reservation->starts_at->format('d/m/Y H:i')} — {$this->reservation->ends_at->format('d/m/Y H:i')}.")
+            ->line($template['message'])
             ->action('Analisar requisição', url('/aprovacoes'));
     }
 
     /** @return array<string, mixed> */
     public function toArray(object $notifiable): array
     {
+        $template = app(NotificationTemplateService::class)->render($this->event, $this->reservation);
+
         return [
             'reservation_uuid' => $this->reservation->uuid,
             'reference' => $this->reservation->reference,
             'event' => $this->event,
-            'message' => $this->event === 'information_provided'
-                ? "Foram prestados esclarecimentos para {$this->reservation->reference}."
-                : "Nova requisição {$this->reservation->reference} aguarda decisão.",
+            'message' => $template['message'],
             'url' => '/aprovacoes',
         ];
     }
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 5e4ee98..4d075b1 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -42,6 +42,25 @@ class AppServiceProvider extends ServiceProvider
             fn (User $user): bool => $user->active
                 && ($user->hasRole(RoleName::InventoryOperator) || $user->hasRole(RoleName::Administrator)),
         );
+        Gate::define(
+            'view-global-calendar',
+            fn (User $user): bool => $user->active && (
+                $user->hasRole(RoleName::Approver)
+                || $user->hasRole(RoleName::InventoryOperator)
+                || $user->hasRole(RoleName::Administrator)
+                || $user->hasRole(RoleName::Auditor)
+            ),
+        );
+        Gate::define(
+            'view-reports',
+            fn (User $user): bool => $user->active
+                && ($user->hasRole(RoleName::Administrator) || $user->hasRole(RoleName::Auditor)),
+        );
+        Gate::define(
+            'view-audit',
+            fn (User $user): bool => $user->active
+                && ($user->hasRole(RoleName::Administrator) || $user->hasRole(RoleName::Auditor)),
+        );
     }
 
     /**
diff --git a/database/migrations/2026_08_04_000700_create_portal_settings_and_reservation_buffers.php b/database/migrations/2026_08_04_000700_create_portal_settings_and_reservation_buffers.php
new file mode 100644
index 0000000..4c9cbb5
--- /dev/null
+++ b/database/migrations/2026_08_04_000700_create_portal_settings_and_reservation_buffers.php
@@ -0,0 +1,65 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('portal_settings', function (Blueprint $table) {
+            $table->string('key')->primary();
+            $table->json('value');
+            $table->text('description')->nullable();
+            $table->foreignId('updated_by')->nullable()->constrained('users')->nullOnDelete();
+            $table->timestampsTz();
+        });
+
+        Schema::table('reservation_items', function (Blueprint $table) {
+            $table->timestampTz('buffer_starts_at')->nullable()->index()->after('ends_at');
+            $table->timestampTz('buffer_ends_at')->nullable()->index()->after('buffer_starts_at');
+        });
+        DB::table('reservation_items')->update([
+            'buffer_starts_at' => DB::raw('starts_at'),
+            'buffer_ends_at' => DB::raw('ends_at'),
+        ]);
+
+        if (DB::getDriverName() === 'pgsql') {
+            DB::statement('ALTER TABLE reservation_items DROP CONSTRAINT reservation_items_no_blocking_overlap');
+            DB::statement('ALTER TABLE reservation_items ALTER COLUMN buffer_starts_at SET NOT NULL');
+            DB::statement('ALTER TABLE reservation_items ALTER COLUMN buffer_ends_at SET NOT NULL');
+            DB::statement(<<<'SQL'
+                ALTER TABLE reservation_items
+                ADD CONSTRAINT reservation_items_no_blocking_overlap
+                EXCLUDE USING gist (
+                    snipe_asset_id WITH =,
+                    tstzrange(buffer_starts_at, buffer_ends_at, '[)') WITH &&
+                )
+                WHERE (status IN ('held', 'reserved', 'ready', 'delivered'))
+                SQL);
+        }
+    }
+
+    public function down(): void
+    {
+        if (DB::getDriverName() === 'pgsql') {
+            DB::statement('ALTER TABLE reservation_items DROP CONSTRAINT reservation_items_no_blocking_overlap');
+            DB::statement(<<<'SQL'
+                ALTER TABLE reservation_items
+                ADD CONSTRAINT reservation_items_no_blocking_overlap
+                EXCLUDE USING gist (
+                    snipe_asset_id WITH =,
+                    tstzrange(starts_at, ends_at, '[)') WITH &&
+                )
+                WHERE (status IN ('held', 'reserved', 'ready', 'delivered'))
+                SQL);
+        }
+
+        Schema::table('reservation_items', function (Blueprint $table) {
+            $table->dropColumn(['buffer_starts_at', 'buffer_ends_at']);
+        });
+        Schema::dropIfExists('portal_settings');
+    }
+};
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 20d8813..4d729c1 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -30,6 +30,7 @@ Nginx ──► Laravel + Inertia/React
 ## Módulos
 
 - `app/Domain/Identity`: perfis, permissões e identidades externas.
+- `app/Domain/Administration`: políticas persistentes, modelos de notificação e configuração funcional.
 - `app/Domain/Inventory`: cache local de ativos e consultas do catálogo.
 - `app/Domain/Reservations`: disponibilidade, estados, regras e requisições.
 - `app/Domain/Approvals`: decisões, histórico e concorrência de aprovação.
@@ -56,6 +57,12 @@ Pré-reservas ficam bloqueantes em `held` enquanto aguardam decisão. `Reservati
 
 Notificações implementam `ShouldQueue`, usam `afterCommit` e seguem dois canais: email e tabela `notifications`. A caixa interna consulta exclusivamente a relação polimórfica do utilizador autenticado, evitando acesso horizontal a notificações de terceiros.
 
+`ReservationPolicy` fornece defaults versionados e sobreposições guardadas em `portal_settings`. Antecedência, duração, limite de itens e prazo são validados no pedido e no serviço de domínio. A margem operacional é materializada em `reservation_items.buffer_starts_at`/`buffer_ends_at`; a restrição GiST usa estes campos, mantendo a proteção contra corridas. Uma alteração de política só afeta novas reservas, preservando o contrato temporal das existentes.
+
+Os relatórios usam consultas de leitura com período máximo de 366 dias. A exportação CSV é transmitida em blocos e neutraliza conteúdos interpretáveis como fórmulas. Auditoria, relatórios e calendário global têm Gates próprios; o perfil `auditor` permanece exclusivamente de leitura.
+
+`NotificationTemplateService` mantém defaults no código e sobreposições em `portal_settings`. Apenas variáveis conhecidas (`{reference}`, `{requester}`, `{starts_at}`, `{ends_at}`, `{comment}`) são substituídas; a alteração de modelos é auditada e nunca inclui credenciais ou configuração SMTP.
+
 ## Fluxo de dados Snipe-IT
 
 1. Um job consulta a API paginada com token de leitura.
diff --git a/docs/DECISIONS.md b/docs/DECISIONS.md
index 57cdfec..72ec4db 100644
--- a/docs/DECISIONS.md
+++ b/docs/DECISIONS.md
@@ -78,3 +78,17 @@ Notificações funcionais são colocadas na fila apenas depois da confirmação
 Checkout e check-in usam um token operacional distinto do token de leitura e nunca escrevem diretamente na base de dados do Snipe-IT. Cada equipamento é movimentado remotamente antes de o respetivo `reservation_item` e `handover_record` serem confirmados localmente. Escritas não têm retry automático: uma falha de ligação ou HTTP 5xx pode ser posterior à execução remota e a repetição cega não é segura. Numa operação com vários itens, sucessos confirmados são preservados e uma falha posterior coloca a requisição em `incident`, com IDs concluídos, item falhado e erro em auditoria. O operador reconcilia o ativo no Snipe-IT e repete apenas o movimento ainda pendente.
 
 O checkout é dirigido a `checkout_to_type=user`; o ID remoto confirmado pelo operador é guardado em `users.snipe_user_id`. O check-in usa o estado e a localização habitual provenientes da última sincronização. Esta opção segue os contratos oficiais de [checkout](https://snipe-it.readme.io/reference/hardware-checkout), [check-in](https://snipe-it.readme.io/reference/hardware-checkin) e o comportamento documentado de [erros em HTTP 200](https://snipe-it.readme.io/reference/api-overview).
+
+## ADR-012 — Políticas persistentes e buffers temporais imutáveis
+
+**Data:** 2026-08-04
+**Estado:** aceite
+
+Guardar parâmetros funcionais em `portal_settings`, mantendo defaults seguros no código. Antecedência, duração, prazo e limite de itens aplicam-se a novos pedidos. A margem é materializada em cada item através de `buffer_starts_at`/`buffer_ends_at` e protegida pela restrição de exclusão PostgreSQL. Alterar a política não recalcula reservas existentes: o período bloqueante aceite no momento da submissão permanece estável e auditável.
+
+## ADR-013 — Supervisão de leitura e exportações seguras
+
+**Data:** 2026-08-04
+**Estado:** aceite
+
+Separar Gates para calendário global, relatórios e auditoria. Administradores têm acesso integral; auditores consultam relatórios/auditoria sem mutações; aprovadores e operadores consultam o calendário global. Relatórios são limitados a 366 dias, exportados por streaming e neutralizam possíveis fórmulas em CSV. Modelos de notificação são conteúdo funcional persistente, mas credenciais SMTP e tokens continuam exclusivamente no ambiente.
diff --git a/docs/PROJECT_STATUS.md b/docs/PROJECT_STATUS.md
index afe0d21..0907685 100644
--- a/docs/PROJECT_STATUS.md
+++ b/docs/PROJECT_STATUS.md
@@ -1,7 +1,7 @@
 # Estado do projeto e handoff
 
 **Atualizado em:** 4 de agosto de 2026  
-**Fase:** Fases 1 a 5 concluídas; próxima entrega: Fase 6
+**Fase:** Fases 1 a 6 concluídas; próxima entrega: Fase 7
 **Último agente:** Codex
 
 ## Resultado disponível
@@ -40,6 +40,15 @@
 - Associação persistente entre o utilizador do portal e o respetivo ID no Snipe-IT, confirmada durante uma entrega bem-sucedida.
 - Tratamento explícito de falhas parciais: movimentos já aceites são preservados, a requisição passa a `incident` e a falha fica em `audit_logs` para reconciliação.
 - Registo de falta, atraso e incidente; um incidente pode criar um bloqueio temporal do equipamento que entra imediatamente no motor de disponibilidade.
+- Gestão administrativa de utilizadores com pesquisa, perfis múltiplos, estado ativo, departamento, ID Snipe-IT e reposição de palavra-passe.
+- Proteção contra desativação da própria conta administrativa e contra remoção do último administrador ativo.
+- Políticas de reserva editáveis para antecedência, duração, margem operacional, prazo de aprovação e limite de equipamentos.
+- Margens temporais persistidas por item e garantidas pela restrição de exclusão PostgreSQL, sem reescrever reservas existentes quando a política muda.
+- Calendário institucional global para aprovadores, operadores, administradores e auditores.
+- Relatórios por período com totais, horas de utilização, incidentes, atrasos, estados, categorias, departamentos e equipamentos mais requisitados.
+- Exportação CSV protegida contra formula injection e limitada a períodos de 366 dias.
+- Consulta paginada e filtrável de `audit_logs`, apenas para administradores e auditores.
+- Modelos editáveis de assunto/mensagem para os seis eventos de notificação, com variáveis validadas e auditoria das alterações.
 
 ## Limites conhecidos
 
@@ -49,36 +58,38 @@
 - O calendário atual é a vista mensal pessoal do MVP; vistas diária, semanal, global e por equipamento/categoria/localização ficam para as áreas operacional e administrativa.
 - O leitor operacional aceita scanners QR/código de barras que funcionem como teclado. A leitura direta pela câmara do navegador ainda não foi adicionada.
 - Uma falha depois de o Snipe-IT confirmar um movimento e antes do commit local é uma transação distribuída ambígua; não existe retry automático de escritas. O operador deve reconciliar pelos registos Snipe-IT e `audit_logs` conforme o runbook.
+- As exportações administrativas estão disponíveis em CSV; XLSX poderá ser acrescentado se o processo institucional o exigir.
 
 ## Próxima tarefa recomendada
 
-Implementar a **Fase 6 — administração e relatórios**:
+Implementar a **Fase 7 — hardening e entrada em produção**:
 
-1. criar a área administrativa de utilizadores, perfis e associação ao ID Snipe-IT;
-2. tornar configuráveis as políticas de antecedência, duração, margens, estados e categorias;
-3. criar calendário global e relatórios de utilização, atrasos, incidentes e ativos mais requisitados;
-4. adicionar exportação CSV/XLSX e filtros por período, categoria, departamento e estado;
-5. criar consulta de auditoria apenas de leitura para o perfil `auditor`;
-6. adicionar métricas operacionais e gestão de modelos de email;
-7. cobrir autorização, exportações e agregações com testes e atualizar toda a documentação.
+1. implementar Microsoft Entra ID/OIDC e associação segura a contas locais;
+2. validar a integração contra o Snipe-IT institucional e configurar tokens reais de menor privilégio;
+3. configurar SMTP institucional, domínio, HTTPS e gestão externa de segredos;
+4. adicionar health checks, monitorização, alertas, backups e teste de restauro;
+5. executar testes de segurança, concorrência, desempenho e end-to-end com equipamentos reais;
+6. preparar formação, dados iniciais e piloto com um grupo reduzido;
+7. corrigir resultados do piloto e preparar a disponibilização geral.
 
 ## Testes da última sessão
 
 Validação concluída em 4 de agosto de 2026:
 
 - `docker compose exec -T app composer test`: passou;
-- Laravel Pint: 117 ficheiros sem desvios;
-- PHPStan/Larastan nível 7: 89 ficheiros, zero erros;
-- Pest: 79 testes passaram, 412 asserções e 2 testes de registo ignorados por a funcionalidade estar deliberadamente desativada;
+- Laravel Pint: 132 ficheiros sem desvios;
+- PHPStan/Larastan nível 7: 100 ficheiros, zero erros;
+- Pest: 92 testes passaram, 522 asserções e 2 testes de registo ignorados por a funcionalidade estar deliberadamente desativada;
 - TypeScript (`tsc --noEmit`): passou;
 - ESLint: passou;
 - Prettier: passou;
-- Vite: builds cliente e SSR concluídos, 2309 módulos cliente e 98 módulos SSR transformados;
+- Vite: builds cliente e SSR concluídos, 2314 módulos cliente e 103 módulos SSR transformados;
 - PostgreSQL 17: `migrate:fresh --seed` concluído, incluindo extensão `btree_gist` e restrição de exclusão temporal;
 - PostgreSQL 17: migration incremental do marcador `last_seen_sync_run_id` aplicada com sucesso;
 - PostgreSQL 17: nenhuma migration pendente; comando de expiração executado e agendamentos horário/a cada cinco minutos confirmados;
 - PostgreSQL 17: migration `notifications` aplicada com sucesso;
 - PostgreSQL 17: migration `snipe_user_id` aplicada e fluxo operacional exercitado contra API simulada;
+- PostgreSQL 17: migration de `portal_settings` e buffers temporais aplicada; restrição GiST recriada sobre o intervalo com margem;
 - smoke test HTTP: `/login` respondeu com estado 200 através do Nginx;
 - Vite em Docker: URL pública, HMR e CORS verificados em `localhost:5173`; corrigida a página em branco causada pela publicação anterior de `0.0.0.0:5173`;
 - Inertia SSR: renderização do login validada através do serviço `node`; corrigido o componente de mensagens flash que usava `usePage()` fora do contexto Inertia;
diff --git a/docs/RUNBOOK.md b/docs/RUNBOOK.md
index 88da11b..5c7fa37 100644
--- a/docs/RUNBOOK.md
+++ b/docs/RUNBOOK.md
@@ -128,6 +128,19 @@ Utilizadores com perfil `approver` ou `administrator` acedem a `http://localhost
 
 As decisões geram jobs de notificação. Em desenvolvimento, confirmar o email em `http://localhost:8025` e a notificação interna em `http://localhost:8000/notificacoes`. Se uma mensagem não chegar, consultar primeiro `docker compose logs --tail=100 queue` e a tabela `failed_jobs`; não repetir a decisão já confirmada.
 
+## Administração e relatórios
+
+Administradores usam:
+
+- `http://localhost:8000/administracao/utilizadores` para contas, perfis e IDs Snipe-IT;
+- `http://localhost:8000/administracao/regras` para políticas aplicadas a novos pedidos;
+- `http://localhost:8000/administracao/notificacoes/modelos` para assuntos e mensagens;
+- `http://localhost:8000/administracao/snipe-it` para diagnóstico da integração.
+
+As alterações são registadas em `audit_logs`. A margem de uma reserva já submetida não muda quando a política é alterada; confirmar `buffer_starts_at` e `buffer_ends_at` do item ao investigar um conflito.
+
+Administradores e auditores consultam `http://localhost:8000/relatorios` e `http://localhost:8000/auditoria`. O CSV usa `;`, UTF-8 com BOM e neutralização de fórmulas para abertura segura em aplicações de folha de cálculo. Cada pedido está limitado a 366 dias; para análises plurianuais, exportar períodos separados. Aprovadores, operadores, administradores e auditores consultam o planeamento consolidado em `http://localhost:8000/calendario-global`.
+
 ## Produção
 
 Antes de disponibilizar:
diff --git a/resources/js/components/app-sidebar.tsx b/resources/js/components/app-sidebar.tsx
index d006a95..2829c22 100644
--- a/resources/js/components/app-sidebar.tsx
+++ b/resources/js/components/app-sidebar.tsx
@@ -1,6 +1,7 @@
 import { Link, usePage } from '@inertiajs/react';
 import {
     Bell,
+    BarChart3,
     CalendarDays,
     CalendarRange,
     LayoutGrid,
@@ -10,6 +11,10 @@ import {
     PlusCircle,
     ServerCog,
     ShieldCheck,
+    ScrollText,
+    UsersRound,
+    SlidersHorizontal,
+    Mails,
 } from 'lucide-react';
 import AppLogo from '@/components/app-logo';
 import { NavFooter } from '@/components/nav-footer';
@@ -82,16 +87,53 @@ export function AppSidebar() {
               },
           ]
         : roleNavItems;
-    const visibleNavItems = can.administer
+    const calendarNavItems = can.viewGlobalCalendar
         ? [
               ...operationalNavItems,
+              {
+                  title: 'Calendário global',
+                  href: '/calendario-global',
+                  icon: CalendarRange,
+              },
+          ]
+        : operationalNavItems;
+    const reportNavItems = can.viewReports
+        ? [
+              ...calendarNavItems,
+              { title: 'Relatórios', href: '/relatorios', icon: BarChart3 },
+          ]
+        : calendarNavItems;
+    const oversightNavItems = can.viewAudit
+        ? [
+              ...reportNavItems,
+              { title: 'Auditoria', href: '/auditoria', icon: ScrollText },
+          ]
+        : reportNavItems;
+    const visibleNavItems = can.administer
+        ? [
+              ...oversightNavItems,
+              {
+                  title: 'Utilizadores',
+                  href: '/administracao/utilizadores',
+                  icon: UsersRound,
+              },
+              {
+                  title: 'Regras de reserva',
+                  href: '/administracao/regras',
+                  icon: SlidersHorizontal,
+              },
+              {
+                  title: 'Modelos de email',
+                  href: '/administracao/notificacoes/modelos',
+                  icon: Mails,
+              },
               {
                   title: 'Integração Snipe-IT',
                   href: '/administracao/snipe-it',
                   icon: ServerCog,
               },
           ]
-        : operationalNavItems;
+        : oversightNavItems;
 
     return (
         <Sidebar collapsible="icon" variant="inset">
diff --git a/resources/js/pages/admin/notification-templates.tsx b/resources/js/pages/admin/notification-templates.tsx
new file mode 100644
index 0000000..835f29a
--- /dev/null
+++ b/resources/js/pages/admin/notification-templates.tsx
@@ -0,0 +1,144 @@
+import { Head, useForm } from '@inertiajs/react';
+import { Mails, Save } from 'lucide-react';
+import type { FormEvent } from 'react';
+import InputError from '@/components/input-error';
+import { PageHeading } from '@/components/page-heading';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+
+type Template = { subject: string; message: string };
+type Definition = Template & { label: string };
+
+export default function NotificationTemplates({
+    definitions,
+    templates,
+    variables,
+}: {
+    definitions: Record<string, Definition>;
+    templates: Record<string, Template>;
+    variables: string[];
+}) {
+    const form = useForm({ templates });
+
+    function submit(event: FormEvent) {
+        event.preventDefault();
+        form.put('/administracao/notificacoes/modelos', {
+            preserveScroll: true,
+        });
+    }
+
+    function update(eventName: string, field: keyof Template, value: string) {
+        form.setData('templates', {
+            ...form.data.templates,
+            [eventName]: { ...form.data.templates[eventName], [field]: value },
+        });
+    }
+
+    return (
+        <>
+            <Head title="Modelos de email" />
+            <main className="mx-auto flex w-full max-w-6xl flex-1 flex-col gap-7 p-5 sm:p-8">
+                <PageHeading
+                    eyebrow="Administração"
+                    title="Modelos de notificação"
+                    description="Personalize o assunto e a mensagem usados no email e na caixa interna, mantendo as variáveis funcionais."
+                />
+                <p className="rounded-xl border bg-muted/40 p-4 text-sm text-muted-foreground">
+                    Variáveis disponíveis:{' '}
+                    {variables.map((variable) => (
+                        <code
+                            key={variable}
+                            className="mx-1 rounded bg-background px-1.5 py-0.5"
+                        >
+                            {variable}
+                        </code>
+                    ))}
+                </p>
+                <form onSubmit={submit} className="space-y-4">
+                    <div className="grid gap-4 lg:grid-cols-2">
+                        {Object.entries(definitions).map(
+                            ([eventName, definition]) => (
+                                <Card
+                                    key={eventName}
+                                    className="gap-4 shadow-none"
+                                >
+                                    <CardHeader>
+                                        <CardTitle className="flex items-center gap-2 text-base">
+                                            <Mails className="size-4 text-primary" />
+                                            {definition.label}
+                                        </CardTitle>
+                                    </CardHeader>
+                                    <CardContent className="space-y-3">
+                                        <label className="space-y-1 text-sm font-medium">
+                                            Assunto
+                                            <Input
+                                                value={
+                                                    form.data.templates[
+                                                        eventName
+                                                    ].subject
+                                                }
+                                                onChange={(event) =>
+                                                    update(
+                                                        eventName,
+                                                        'subject',
+                                                        event.target.value,
+                                                    )
+                                                }
+                                            />
+                                        </label>
+                                        <InputError
+                                            message={
+                                                form.errors[
+                                                    `templates.${eventName}.subject`
+                                                ]
+                                            }
+                                        />
+                                        <label className="block space-y-1 text-sm font-medium">
+                                            Mensagem
+                                            <textarea
+                                                className="min-h-24 w-full rounded-md border bg-transparent px-3 py-2 text-sm"
+                                                value={
+                                                    form.data.templates[
+                                                        eventName
+                                                    ].message
+                                                }
+                                                onChange={(event) =>
+                                                    update(
+                                                        eventName,
+                                                        'message',
+                                                        event.target.value,
+                                                    )
+                                                }
+                                            />
+                                        </label>
+                                        <InputError
+                                            message={
+                                                form.errors[
+                                                    `templates.${eventName}.message`
+                                                ]
+                                            }
+                                        />
+                                    </CardContent>
+                                </Card>
+                            ),
+                        )}
+                    </div>
+                    <Button type="submit" disabled={form.processing}>
+                        <Save /> Guardar modelos
+                    </Button>
+                </form>
+            </main>
+        </>
+    );
+}
+
+NotificationTemplates.layout = {
+    breadcrumbs: [
+        { title: 'Administração', href: '/administracao/notificacoes/modelos' },
+        {
+            title: 'Modelos de email',
+            href: '/administracao/notificacoes/modelos',
+        },
+    ],
+};
diff --git a/resources/js/pages/admin/reservation-policy.tsx b/resources/js/pages/admin/reservation-policy.tsx
new file mode 100644
index 0000000..3a89003
--- /dev/null
+++ b/resources/js/pages/admin/reservation-policy.tsx
@@ -0,0 +1,112 @@
+import { Head, useForm } from '@inertiajs/react';
+import { Clock3, Save, ShieldCheck } from 'lucide-react';
+import type { FormEvent } from 'react';
+import InputError from '@/components/input-error';
+import { PageHeading } from '@/components/page-heading';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+
+type Definition = {
+    label: string;
+    description: string;
+    default: number;
+    min: number;
+    max: number;
+    unit: string;
+};
+
+export default function ReservationPolicyPage({
+    definitions,
+    values,
+}: {
+    definitions: Record<string, Definition>;
+    values: Record<string, number>;
+}) {
+    const form = useForm(values);
+
+    function submit(event: FormEvent) {
+        event.preventDefault();
+        form.put('/administracao/regras', { preserveScroll: true });
+    }
+
+    return (
+        <>
+            <Head title="Regras de reserva" />
+            <main className="mx-auto flex w-full max-w-5xl flex-1 flex-col gap-7 p-5 sm:p-8">
+                <PageHeading
+                    eyebrow="Administração"
+                    title="Regras de reserva"
+                    description="Parâmetros aplicados centralmente a novos pedidos, conflitos temporais e prazos de aprovação."
+                />
+
+                <div className="flex gap-3 rounded-xl border border-sky-200 bg-sky-50 p-4 text-sm text-sky-900 dark:bg-sky-950/30 dark:text-sky-100">
+                    <ShieldCheck className="mt-0.5 size-5 shrink-0" />
+                    <p>
+                        As margens já gravadas permanecem associadas às reservas
+                        existentes. Alterações entram em vigor imediatamente
+                        para novas requisições.
+                    </p>
+                </div>
+
+                <form onSubmit={submit} className="space-y-5">
+                    <div className="grid gap-4 md:grid-cols-2">
+                        {Object.entries(definitions).map(
+                            ([key, definition]) => (
+                                <Card key={key} className="gap-4 shadow-none">
+                                    <CardHeader>
+                                        <CardTitle className="flex items-center gap-2 text-base">
+                                            <Clock3 className="size-4 text-primary" />
+                                            {definition.label}
+                                        </CardTitle>
+                                    </CardHeader>
+                                    <CardContent className="space-y-3">
+                                        <p className="min-h-10 text-sm text-muted-foreground">
+                                            {definition.description}
+                                        </p>
+                                        <div className="flex items-center gap-3">
+                                            <Input
+                                                type="number"
+                                                min={definition.min}
+                                                max={definition.max}
+                                                value={form.data[key]}
+                                                onChange={(event) =>
+                                                    form.setData(
+                                                        key,
+                                                        Number(
+                                                            event.target.value,
+                                                        ),
+                                                    )
+                                                }
+                                            />
+                                            <span className="min-w-24 text-sm text-muted-foreground">
+                                                {definition.unit}
+                                            </span>
+                                        </div>
+                                        <InputError
+                                            message={form.errors[key]}
+                                        />
+                                        <p className="text-xs text-muted-foreground">
+                                            Intervalo permitido:{' '}
+                                            {definition.min}–{definition.max}
+                                        </p>
+                                    </CardContent>
+                                </Card>
+                            ),
+                        )}
+                    </div>
+                    <Button type="submit" disabled={form.processing}>
+                        <Save /> Guardar e aplicar regras
+                    </Button>
+                </form>
+            </main>
+        </>
+    );
+}
+
+ReservationPolicyPage.layout = {
+    breadcrumbs: [
+        { title: 'Administração', href: '/administracao/regras' },
+        { title: 'Regras de reserva', href: '/administracao/regras' },
+    ],
+};
diff --git a/resources/js/pages/admin/users/index.tsx b/resources/js/pages/admin/users/index.tsx
new file mode 100644
index 0000000..eeca87a
--- /dev/null
+++ b/resources/js/pages/admin/users/index.tsx
@@ -0,0 +1,423 @@
+import { Head, Link, router, usePage } from '@inertiajs/react';
+import { Plus, Search, UserCog } from 'lucide-react';
+import type { FormEvent } from 'react';
+import { useState } from 'react';
+import InputError from '@/components/input-error';
+import { PageHeading } from '@/components/page-heading';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+import type { Paginated } from '@/types';
+
+type Role = { id: number; name: string; description: string | null };
+type ManagedUser = {
+    id: number;
+    uuid: string;
+    name: string;
+    email: string;
+    department: string | null;
+    snipe_user_id: number | null;
+    active: boolean;
+    roles: Role[];
+};
+type UserFormState = {
+    name: string;
+    email: string;
+    department: string;
+    snipeUserId: string;
+    password: string;
+    active: boolean;
+    roles: string[];
+};
+
+const roleLabels: Record<string, string> = {
+    requester: 'Requisitante',
+    approver: 'Aprovador',
+    inventory_operator: 'Operador',
+    administrator: 'Administrador',
+    auditor: 'Auditor',
+};
+
+export default function UsersIndex({
+    users,
+    roles,
+    filters,
+}: {
+    users: Paginated<ManagedUser>;
+    roles: Role[];
+    filters: { search?: string; role?: string; status?: string };
+}) {
+    const [search, setSearch] = useState(filters.search ?? '');
+    const [role, setRole] = useState(filters.role ?? '');
+    const [status, setStatus] = useState(filters.status ?? '');
+    const [creating, setCreating] = useState(false);
+
+    function submitFilters(event: FormEvent) {
+        event.preventDefault();
+        router.get('/administracao/utilizadores', {
+            search: search || undefined,
+            role: role || undefined,
+            status: status || undefined,
+        });
+    }
+
+    return (
+        <>
+            <Head title="Utilizadores" />
+            <main className="mx-auto flex w-full max-w-7xl flex-1 flex-col gap-7 p-5 sm:p-8">
+                <PageHeading
+                    eyebrow="Administração"
+                    title="Utilizadores e perfis"
+                    description="Gerir acesso, responsabilidades e a associação de cada conta ao utilizador correspondente no Snipe-IT."
+                    action={
+                        <Button onClick={() => setCreating((value) => !value)}>
+                            <Plus /> Novo utilizador
+                        </Button>
+                    }
+                />
+
+                {creating && (
+                    <Card className="shadow-none">
+                        <CardHeader>
+                            <CardTitle>Criar conta institucional</CardTitle>
+                        </CardHeader>
+                        <CardContent>
+                            <UserForm
+                                roles={roles}
+                                initial={{
+                                    name: '',
+                                    email: '',
+                                    department: '',
+                                    snipeUserId: '',
+                                    password: '',
+                                    active: true,
+                                    roles: ['requester'],
+                                }}
+                                passwordRequired
+                                submitLabel="Criar utilizador"
+                                onSubmit={(data, finish) =>
+                                    router.post(
+                                        '/administracao/utilizadores',
+                                        payload(data),
+                                        {
+                                            preserveScroll: true,
+                                            onSuccess: () => setCreating(false),
+                                            onFinish: finish,
+                                        },
+                                    )
+                                }
+                            />
+                        </CardContent>
+                    </Card>
+                )}
+
+                <form
+                    onSubmit={submitFilters}
+                    className="grid gap-2 rounded-xl border bg-card p-4 md:grid-cols-[1fr_220px_180px_auto]"
+                >
+                    <div className="relative">
+                        <Search className="absolute top-2.5 left-3 size-4 text-muted-foreground" />
+                        <Input
+                            className="pl-9"
+                            value={search}
+                            onChange={(event) => setSearch(event.target.value)}
+                            placeholder="Nome, email ou departamento…"
+                        />
+                    </div>
+                    <select
+                        className="rounded-md border bg-transparent px-3 text-sm"
+                        value={role}
+                        onChange={(event) => setRole(event.target.value)}
+                    >
+                        <option value="">Todos os perfis</option>
+                        {roles.map((item) => (
+                            <option key={item.id} value={item.name}>
+                                {roleLabels[item.name] ?? item.name}
+                            </option>
+                        ))}
+                    </select>
+                    <select
+                        className="rounded-md border bg-transparent px-3 text-sm"
+                        value={status}
+                        onChange={(event) => setStatus(event.target.value)}
+                    >
+                        <option value="">Ativos e inativos</option>
+                        <option value="active">Ativos</option>
+                        <option value="inactive">Inativos</option>
+                    </select>
+                    <Button type="submit" variant="secondary">
+                        Pesquisar
+                    </Button>
+                </form>
+
+                <section className="space-y-4">
+                    {users.data.map((user) => (
+                        <Card key={user.id} className="gap-4 shadow-none">
+                            <CardHeader className="flex-row items-start justify-between gap-3">
+                                <div>
+                                    <CardTitle className="flex items-center gap-2 text-base">
+                                        <UserCog className="size-4 text-primary" />
+                                        {user.name}
+                                    </CardTitle>
+                                    <p className="mt-1 text-sm text-muted-foreground">
+                                        {user.email} ·{' '}
+                                        {user.department ?? 'Sem departamento'}
+                                    </p>
+                                </div>
+                                <div className="flex flex-wrap justify-end gap-1">
+                                    <Badge
+                                        variant={
+                                            user.active
+                                                ? 'default'
+                                                : 'secondary'
+                                        }
+                                    >
+                                        {user.active ? 'Ativo' : 'Inativo'}
+                                    </Badge>
+                                    {user.roles.map((item) => (
+                                        <Badge key={item.id} variant="outline">
+                                            {roleLabels[item.name] ?? item.name}
+                                        </Badge>
+                                    ))}
+                                </div>
+                            </CardHeader>
+                            <CardContent>
+                                <details>
+                                    <summary className="cursor-pointer text-sm font-medium text-primary">
+                                        Editar conta e perfis
+                                    </summary>
+                                    <div className="mt-4">
+                                        <UserForm
+                                            roles={roles}
+                                            initial={{
+                                                name: user.name,
+                                                email: user.email,
+                                                department:
+                                                    user.department ?? '',
+                                                snipeUserId:
+                                                    user.snipe_user_id?.toString() ??
+                                                    '',
+                                                password: '',
+                                                active: user.active,
+                                                roles: user.roles.map(
+                                                    (item) => item.name,
+                                                ),
+                                            }}
+                                            submitLabel="Guardar alterações"
+                                            onSubmit={(data, finish) =>
+                                                router.put(
+                                                    `/administracao/utilizadores/${user.id}`,
+                                                    payload(data),
+                                                    {
+                                                        preserveScroll: true,
+                                                        onFinish: finish,
+                                                    },
+                                                )
+                                            }
+                                        />
+                                    </div>
+                                </details>
+                            </CardContent>
+                        </Card>
+                    ))}
+                </section>
+
+                {users.last_page > 1 && (
+                    <nav
+                        className="flex flex-wrap gap-2"
+                        aria-label="Paginação"
+                    >
+                        {users.links.map((link) =>
+                            link.url ? (
+                                <Button
+                                    key={link.label}
+                                    asChild
+                                    variant={
+                                        link.active ? 'default' : 'outline'
+                                    }
+                                    size="sm"
+                                >
+                                    <Link
+                                        href={link.url}
+                                        dangerouslySetInnerHTML={{
+                                            __html: link.label,
+                                        }}
+                                    />
+                                </Button>
+                            ) : null,
+                        )}
+                    </nav>
+                )}
+            </main>
+        </>
+    );
+}
+
+function UserForm({
+    roles,
+    initial,
+    passwordRequired = false,
+    submitLabel,
+    onSubmit,
+}: {
+    roles: Role[];
+    initial: UserFormState;
+    passwordRequired?: boolean;
+    submitLabel: string;
+    onSubmit: (data: UserFormState, finish: () => void) => void;
+}) {
+    const [data, setData] = useState(initial);
+    const [processing, setProcessing] = useState(false);
+    const { errors } = usePage().props;
+
+    function submit(event: FormEvent) {
+        event.preventDefault();
+        setProcessing(true);
+        onSubmit(data, () => setProcessing(false));
+    }
+
+    function toggleRole(name: string) {
+        setData((current) => ({
+            ...current,
+            roles: current.roles.includes(name)
+                ? current.roles.filter((item) => item !== name)
+                : [...current.roles, name],
+        }));
+    }
+
+    return (
+        <form
+            onSubmit={submit}
+            className="grid gap-4 md:grid-cols-2 xl:grid-cols-3"
+        >
+            <Field label="Nome">
+                <Input
+                    value={data.name}
+                    onChange={(event) =>
+                        setData({ ...data, name: event.target.value })
+                    }
+                    required
+                />
+            </Field>
+            <Field label="Email institucional">
+                <Input
+                    type="email"
+                    value={data.email}
+                    onChange={(event) =>
+                        setData({ ...data, email: event.target.value })
+                    }
+                    required
+                />
+            </Field>
+            <Field label="Departamento">
+                <Input
+                    value={data.department}
+                    onChange={(event) =>
+                        setData({ ...data, department: event.target.value })
+                    }
+                />
+            </Field>
+            <Field label="ID do utilizador no Snipe-IT">
+                <Input
+                    type="number"
+                    min={1}
+                    value={data.snipeUserId}
+                    onChange={(event) =>
+                        setData({ ...data, snipeUserId: event.target.value })
+                    }
+                />
+            </Field>
+            <Field
+                label={
+                    passwordRequired
+                        ? 'Palavra-passe temporária'
+                        : 'Nova palavra-passe (opcional)'
+                }
+            >
+                <Input
+                    type="password"
+                    minLength={12}
+                    value={data.password}
+                    onChange={(event) =>
+                        setData({ ...data, password: event.target.value })
+                    }
+                    required={passwordRequired}
+                />
+            </Field>
+            <label className="flex items-center gap-2 self-end pb-2 text-sm font-medium">
+                <input
+                    type="checkbox"
+                    checked={data.active}
+                    onChange={(event) =>
+                        setData({ ...data, active: event.target.checked })
+                    }
+                />
+                Conta ativa
+            </label>
+            <fieldset className="space-y-2 md:col-span-2 xl:col-span-3">
+                <legend className="text-sm font-medium">Perfis</legend>
+                <div className="flex flex-wrap gap-3">
+                    {roles.map((role) => (
+                        <label
+                            key={role.id}
+                            className="flex items-center gap-2 rounded-lg border px-3 py-2 text-sm"
+                        >
+                            <input
+                                type="checkbox"
+                                checked={data.roles.includes(role.name)}
+                                onChange={() => toggleRole(role.name)}
+                            />
+                            {roleLabels[role.name] ?? role.name}
+                        </label>
+                    ))}
+                </div>
+            </fieldset>
+            <div className="space-y-1 md:col-span-2 xl:col-span-3">
+                {Object.values(errors).map((message, index) => (
+                    <InputError key={`${message}-${index}`} message={message} />
+                ))}
+                <Button
+                    type="submit"
+                    disabled={processing || data.roles.length === 0}
+                >
+                    {submitLabel}
+                </Button>
+            </div>
+        </form>
+    );
+}
+
+function Field({
+    label,
+    children,
+}: {
+    label: string;
+    children: React.ReactNode;
+}) {
+    return (
+        <label className="space-y-1 text-sm font-medium">
+            {label}
+            {children}
+        </label>
+    );
+}
+
+function payload(data: UserFormState) {
+    return {
+        name: data.name,
+        email: data.email,
+        department: data.department || null,
+        snipe_user_id: data.snipeUserId ? Number(data.snipeUserId) : null,
+        password: data.password || null,
+        active: data.active,
+        roles: data.roles,
+    };
+}
+
+UsersIndex.layout = {
+    breadcrumbs: [
+        { title: 'Administração', href: '/administracao/utilizadores' },
+        { title: 'Utilizadores', href: '/administracao/utilizadores' },
+    ],
+};
diff --git a/resources/js/pages/audit/index.tsx b/resources/js/pages/audit/index.tsx
new file mode 100644
index 0000000..7c8d7cc
--- /dev/null
+++ b/resources/js/pages/audit/index.tsx
@@ -0,0 +1,186 @@
+import { Head, Link, router } from '@inertiajs/react';
+import { Search, ScrollText } from 'lucide-react';
+import type { FormEvent } from 'react';
+import { useState } from 'react';
+import { PageHeading } from '@/components/page-heading';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+import type { Paginated } from '@/types';
+
+type AuditLog = {
+    id: number;
+    event: string;
+    auditable_type: string | null;
+    auditable_id: string | null;
+    before: Record<string, unknown> | null;
+    after: Record<string, unknown> | null;
+    metadata: Record<string, unknown> | null;
+    created_at: string;
+    actor: { name: string; email: string } | null;
+};
+
+export default function AuditIndex({
+    logs,
+    actors,
+    events,
+    filters,
+}: {
+    logs: Paginated<AuditLog>;
+    actors: { id: number; name: string }[];
+    events: string[];
+    filters: {
+        event?: string;
+        actor_id?: number;
+        date_from?: string;
+        date_to?: string;
+    };
+}) {
+    const [event, setEvent] = useState(filters.event ?? '');
+    const [actorId, setActorId] = useState(filters.actor_id?.toString() ?? '');
+    const [dateFrom, setDateFrom] = useState(filters.date_from ?? '');
+    const [dateTo, setDateTo] = useState(filters.date_to ?? '');
+
+    function filter(submitEvent: FormEvent) {
+        submitEvent.preventDefault();
+        router.get('/auditoria', {
+            event: event || undefined,
+            actor_id: actorId || undefined,
+            date_from: dateFrom || undefined,
+            date_to: dateTo || undefined,
+        });
+    }
+
+    return (
+        <>
+            <Head title="Auditoria" />
+            <main className="mx-auto flex w-full max-w-7xl flex-1 flex-col gap-7 p-5 sm:p-8">
+                <PageHeading
+                    eyebrow="Controlo"
+                    title="Registo de auditoria"
+                    description="Histórico imutável das decisões, operações e alterações administrativas do portal."
+                />
+                <form
+                    onSubmit={filter}
+                    className="grid gap-2 rounded-xl border bg-card p-4 lg:grid-cols-[1fr_220px_160px_160px_auto]"
+                >
+                    <div className="relative">
+                        <Search className="absolute top-2.5 left-3 size-4 text-muted-foreground" />
+                        <Input
+                            className="pl-9"
+                            list="audit-events"
+                            value={event}
+                            onChange={(e) => setEvent(e.target.value)}
+                            placeholder="Evento…"
+                        />
+                        <datalist id="audit-events">
+                            {events.map((item) => (
+                                <option key={item} value={item} />
+                            ))}
+                        </datalist>
+                    </div>
+                    <select
+                        className="rounded-md border bg-transparent px-3 text-sm"
+                        value={actorId}
+                        onChange={(e) => setActorId(e.target.value)}
+                    >
+                        <option value="">Todos os autores</option>
+                        {actors.map((actor) => (
+                            <option key={actor.id} value={actor.id}>
+                                {actor.name}
+                            </option>
+                        ))}
+                    </select>
+                    <Input
+                        type="date"
+                        value={dateFrom}
+                        onChange={(e) => setDateFrom(e.target.value)}
+                        aria-label="Data inicial"
+                    />
+                    <Input
+                        type="date"
+                        value={dateTo}
+                        onChange={(e) => setDateTo(e.target.value)}
+                        aria-label="Data final"
+                    />
+                    <Button type="submit" variant="secondary">
+                        Filtrar
+                    </Button>
+                </form>
+                <section className="space-y-3">
+                    {logs.data.map((log) => (
+                        <Card key={log.id} className="gap-3 py-4 shadow-none">
+                            <CardContent className="space-y-2">
+                                <div className="flex flex-wrap items-center justify-between gap-3">
+                                    <p className="flex items-center gap-2 font-mono text-sm font-semibold">
+                                        <ScrollText className="size-4 text-primary" />
+                                        {log.event}
+                                    </p>
+                                    <time className="text-xs text-muted-foreground">
+                                        {new Intl.DateTimeFormat('pt-PT', {
+                                            dateStyle: 'short',
+                                            timeStyle: 'medium',
+                                        }).format(new Date(log.created_at))}
+                                    </time>
+                                </div>
+                                <p className="text-sm text-muted-foreground">
+                                    {log.actor
+                                        ? `${log.actor.name} · ${log.actor.email}`
+                                        : 'Sistema'}
+                                    {log.auditable_type
+                                        ? ` · ${log.auditable_type} #${log.auditable_id}`
+                                        : ''}
+                                </p>
+                                {(log.before || log.after || log.metadata) && (
+                                    <details>
+                                        <summary className="cursor-pointer text-xs font-medium text-primary">
+                                            Ver dados técnicos
+                                        </summary>
+                                        <pre className="mt-2 overflow-x-auto rounded bg-slate-950 p-3 text-xs text-slate-100">
+                                            {JSON.stringify(
+                                                {
+                                                    before: log.before,
+                                                    after: log.after,
+                                                    metadata: log.metadata,
+                                                },
+                                                null,
+                                                2,
+                                            )}
+                                        </pre>
+                                    </details>
+                                )}
+                            </CardContent>
+                        </Card>
+                    ))}
+                </section>
+                {logs.last_page > 1 && (
+                    <nav className="flex flex-wrap gap-2">
+                        {logs.links.map((link) =>
+                            link.url ? (
+                                <Button
+                                    key={link.label}
+                                    asChild
+                                    size="sm"
+                                    variant={
+                                        link.active ? 'default' : 'outline'
+                                    }
+                                >
+                                    <Link
+                                        href={link.url}
+                                        dangerouslySetInnerHTML={{
+                                            __html: link.label,
+                                        }}
+                                    />
+                                </Button>
+                            ) : null,
+                        )}
+                    </nav>
+                )}
+            </main>
+        </>
+    );
+}
+
+AuditIndex.layout = {
+    breadcrumbs: [{ title: 'Auditoria', href: '/auditoria' }],
+};
diff --git a/resources/js/pages/reports/index.tsx b/resources/js/pages/reports/index.tsx
new file mode 100644
index 0000000..bc03cf4
--- /dev/null
+++ b/resources/js/pages/reports/index.tsx
@@ -0,0 +1,194 @@
+import { Head, router } from '@inertiajs/react';
+import {
+    AlertTriangle,
+    CheckCircle2,
+    Clock3,
+    Download,
+    FileText,
+} from 'lucide-react';
+import type { LucideIcon } from 'lucide-react';
+import type { FormEvent } from 'react';
+import { useState } from 'react';
+import { PageHeading } from '@/components/page-heading';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+
+type Summary = {
+    total: number;
+    completed: number;
+    incidents: number;
+    overdue: number;
+    utilizationHours: number;
+};
+
+export default function ReportsIndex({
+    filters,
+    summary,
+    byStatus,
+    byCategory,
+    byDepartment,
+    topAssets,
+}: {
+    filters: { date_from: string; date_to: string };
+    summary: Summary;
+    byStatus: Record<string, number>;
+    byCategory: Record<string, number>;
+    byDepartment: Record<string, number>;
+    topAssets: Record<string, number>;
+}) {
+    const [dateFrom, setDateFrom] = useState(filters.date_from);
+    const [dateTo, setDateTo] = useState(filters.date_to);
+
+    function filter(event: FormEvent) {
+        event.preventDefault();
+        router.get('/relatorios', { date_from: dateFrom, date_to: dateTo });
+    }
+
+    const exportUrl = `/relatorios/exportar?${new URLSearchParams({ date_from: dateFrom, date_to: dateTo })}`;
+
+    return (
+        <>
+            <Head title="Relatórios" />
+            <main className="mx-auto flex w-full max-w-7xl flex-1 flex-col gap-7 p-5 sm:p-8">
+                <PageHeading
+                    eyebrow="Gestão e análise"
+                    title="Relatórios operacionais"
+                    description="Indicadores consolidados por período, com exportação detalhada para tratamento externo."
+                    action={
+                        <Button asChild variant="outline">
+                            <a href={exportUrl}>
+                                <Download /> Exportar CSV
+                            </a>
+                        </Button>
+                    }
+                />
+                <form
+                    onSubmit={filter}
+                    className="flex flex-wrap items-end gap-3 rounded-xl border bg-card p-4"
+                >
+                    <label className="space-y-1 text-sm font-medium">
+                        De
+                        <Input
+                            type="date"
+                            value={dateFrom}
+                            onChange={(event) =>
+                                setDateFrom(event.target.value)
+                            }
+                        />
+                    </label>
+                    <label className="space-y-1 text-sm font-medium">
+                        Até
+                        <Input
+                            type="date"
+                            value={dateTo}
+                            onChange={(event) => setDateTo(event.target.value)}
+                        />
+                    </label>
+                    <Button type="submit" variant="secondary">
+                        Atualizar
+                    </Button>
+                </form>
+                <section className="grid gap-4 sm:grid-cols-2 xl:grid-cols-5">
+                    <Metric
+                        icon={FileText}
+                        label="Requisições"
+                        value={summary.total}
+                    />
+                    <Metric
+                        icon={CheckCircle2}
+                        label="Concluídas"
+                        value={summary.completed}
+                    />
+                    <Metric
+                        icon={Clock3}
+                        label="Horas de utilização"
+                        value={summary.utilizationHours}
+                    />
+                    <Metric
+                        icon={AlertTriangle}
+                        label="Incidentes"
+                        value={summary.incidents}
+                    />
+                    <Metric
+                        icon={AlertTriangle}
+                        label="Atrasos"
+                        value={summary.overdue}
+                    />
+                </section>
+                <section className="grid gap-4 lg:grid-cols-2">
+                    <Breakdown title="Por estado" values={byStatus} />
+                    <Breakdown title="Por categoria" values={byCategory} />
+                    <Breakdown title="Por departamento" values={byDepartment} />
+                    <Breakdown
+                        title="Equipamentos mais requisitados"
+                        values={topAssets}
+                    />
+                </section>
+            </main>
+        </>
+    );
+}
+
+function Metric({
+    icon: Icon,
+    label,
+    value,
+}: {
+    icon: LucideIcon;
+    label: string;
+    value: number;
+}) {
+    return (
+        <Card className="gap-3 py-5 shadow-none">
+            <CardContent>
+                <Icon className="mb-3 size-5 text-primary" />
+                <p className="text-2xl font-semibold">{value}</p>
+                <p className="text-sm text-muted-foreground">{label}</p>
+            </CardContent>
+        </Card>
+    );
+}
+
+function Breakdown({
+    title,
+    values,
+}: {
+    title: string;
+    values: Record<string, number>;
+}) {
+    const max = Math.max(1, ...Object.values(values));
+
+    return (
+        <Card className="shadow-none">
+            <CardHeader>
+                <CardTitle className="text-base">{title}</CardTitle>
+            </CardHeader>
+            <CardContent className="space-y-3">
+                {Object.keys(values).length === 0 && (
+                    <p className="text-sm text-muted-foreground">
+                        Sem dados no período.
+                    </p>
+                )}
+                {Object.entries(values).map(([label, value]) => (
+                    <div key={label}>
+                        <div className="mb-1 flex justify-between gap-3 text-sm">
+                            <span>{label}</span>
+                            <strong>{value}</strong>
+                        </div>
+                        <div className="h-2 rounded bg-muted">
+                            <div
+                                className="h-2 rounded bg-primary"
+                                style={{ width: `${(value / max) * 100}%` }}
+                            />
+                        </div>
+                    </div>
+                ))}
+            </CardContent>
+        </Card>
+    );
+}
+
+ReportsIndex.layout = {
+    breadcrumbs: [{ title: 'Relatórios', href: '/relatorios' }],
+};
diff --git a/resources/js/pages/reservations/calendar.tsx b/resources/js/pages/reservations/calendar.tsx
index d33cee4..d033452 100644
--- a/resources/js/pages/reservations/calendar.tsx
+++ b/resources/js/pages/reservations/calendar.tsx
@@ -10,9 +10,13 @@ const weekdays = ['Seg', 'Ter', 'Qua', 'Qui', 'Sex', 'Sáb', 'Dom'];
 export default function ReservationCalendar({
     month,
     reservations,
+    scope = 'personal',
 }: {
     month: string;
-    reservations: Reservation[];
+    reservations: (Reservation & {
+        requester?: { name: string; department: string | null };
+    })[];
+    scope?: 'personal' | 'global';
 }) {
     const [year, monthNumber] = month.split('-').map(Number);
     const monthStart = new Date(year, monthNumber - 1, 1);
@@ -32,21 +36,35 @@ export default function ReservationCalendar({
     }).format(monthStart);
     const previousMonth = monthKey(new Date(year, monthNumber - 2, 1));
     const nextMonth = monthKey(new Date(year, monthNumber, 1));
+    const global = scope === 'global';
+    const calendarUrl = global
+        ? '/calendario-global'
+        : '/requisicoes/calendario';
 
     return (
         <>
-            <Head title="O meu calendário" />
+            <Head title={global ? 'Calendário global' : 'O meu calendário'} />
             <main className="mx-auto flex w-full max-w-7xl flex-1 flex-col gap-7 p-5 sm:p-8">
                 <PageHeading
-                    eyebrow="Planeamento pessoal"
-                    title="O meu calendário"
-                    description="Consulte as suas requisições no mês e identifique rapidamente períodos sobrepostos."
+                    eyebrow={
+                        global
+                            ? 'Planeamento institucional'
+                            : 'Planeamento pessoal'
+                    }
+                    title={global ? 'Calendário global' : 'O meu calendário'}
+                    description={
+                        global
+                            ? 'Visão consolidada de todas as requisições, requisitantes e equipamentos.'
+                            : 'Consulte as suas requisições no mês e identifique rapidamente períodos sobrepostos.'
+                    }
                     action={
-                        <Button asChild>
-                            <Link href="/requisicoes/nova">
-                                <Plus /> Nova requisição
-                            </Link>
-                        </Button>
+                        !global ? (
+                            <Button asChild>
+                                <Link href="/requisicoes/nova">
+                                    <Plus /> Nova requisição
+                                </Link>
+                            </Button>
+                        ) : undefined
                     }
                 />
 
@@ -54,7 +72,7 @@ export default function ReservationCalendar({
                     <header className="flex items-center justify-between border-b p-4">
                         <Button asChild variant="outline" size="sm">
                             <Link
-                                href={`/requisicoes/calendario?month=${previousMonth}`}
+                                href={`${calendarUrl}?month=${previousMonth}`}
                             >
                                 <ArrowLeft /> Anterior
                             </Link>
@@ -63,9 +81,7 @@ export default function ReservationCalendar({
                             {title}
                         </h2>
                         <Button asChild variant="outline" size="sm">
-                            <Link
-                                href={`/requisicoes/calendario?month=${nextMonth}`}
-                            >
+                            <Link href={`${calendarUrl}?month=${nextMonth}`}>
                                 Seguinte <ArrowRight />
                             </Link>
                         </Button>
@@ -132,6 +148,10 @@ export default function ReservationCalendar({
                                                     )}
                                                 >
                                                     {reservation.reference}
+                                                    {global &&
+                                                    reservation.requester
+                                                        ? ` · ${reservation.requester.name}`
+                                                        : ''}
                                                 </div>
                                             ))}
                                         {entries.length > 3 && (
@@ -202,8 +222,5 @@ function statusBorder(status: string): string {
 }
 
 ReservationCalendar.layout = {
-    breadcrumbs: [
-        { title: 'Requisições', href: '/requisicoes' },
-        { title: 'Calendário', href: '/requisicoes/calendario' },
-    ],
+    breadcrumbs: [{ title: 'Calendário', href: '/requisicoes/calendario' }],
 };
diff --git a/resources/js/pages/reservations/create.tsx b/resources/js/pages/reservations/create.tsx
index f5da4db..7e4bf5d 100644
--- a/resources/js/pages/reservations/create.tsx
+++ b/resources/js/pages/reservations/create.tsx
@@ -21,11 +21,18 @@ export default function CreateReservation({
     selectedAssetId,
     period,
     periodSelected,
+    policy,
 }: {
     assets: Asset[];
     selectedAssetId: number;
     period: { starts_at?: string; ends_at?: string };
     periodSelected: boolean;
+    policy: {
+        minNoticeHours: number;
+        maxDurationHours: number;
+        turnaroundMinutes: number;
+        maxAssets: number;
+    };
 }) {
     const form = useForm({
         purpose: '',
@@ -70,6 +77,15 @@ export default function CreateReservation({
                         </Button>
                     }
                 />
+                <p className="rounded-xl border bg-muted/40 px-4 py-3 text-sm text-muted-foreground">
+                    Regras atuais: antecedência mínima de{' '}
+                    {policy.minNoticeHours} h, duração máxima de{' '}
+                    {policy.maxDurationHours} h, até {policy.maxAssets}{' '}
+                    equipamentos
+                    {policy.turnaroundMinutes > 0
+                        ? ` e margem operacional de ${policy.turnaroundMinutes} min.`
+                        : '.'}
+                </p>
                 <form
                     onSubmit={submit}
                     className="grid gap-6 lg:grid-cols-[1fr_320px]"
diff --git a/resources/js/types/global.d.ts b/resources/js/types/global.d.ts
index fa3cd85..b9b669c 100644
--- a/resources/js/types/global.d.ts
+++ b/resources/js/types/global.d.ts
@@ -20,6 +20,9 @@ declare module '@inertiajs/core' {
                 administer: boolean;
                 approveReservations: boolean;
                 operateInventory: boolean;
+                viewGlobalCalendar: boolean;
+                viewReports: boolean;
+                viewAudit: boolean;
             };
             unreadNotifications: number;
             sidebarOpen: boolean;
diff --git a/routes/web.php b/routes/web.php
index bd4890d..86ba416 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -1,11 +1,17 @@
 <?php
 
+use App\Http\Controllers\Admin\NotificationTemplateController;
+use App\Http\Controllers\Admin\ReservationPolicyController;
 use App\Http\Controllers\Admin\SnipeItController;
+use App\Http\Controllers\Admin\UserController;
 use App\Http\Controllers\ApprovalController;
 use App\Http\Controllers\AssetController;
+use App\Http\Controllers\AuditController;
 use App\Http\Controllers\DashboardController;
+use App\Http\Controllers\GlobalCalendarController;
 use App\Http\Controllers\NotificationController;
 use App\Http\Controllers\OperationController;
+use App\Http\Controllers\ReportController;
 use App\Http\Controllers\ReservationController;
 use Illuminate\Support\Facades\Route;
 
@@ -43,7 +49,21 @@ Route::middleware(['auth', 'verified'])->group(function () {
         Route::post('{reservation:uuid}/itens/{item}/incidente', [OperationController::class, 'incident'])->name('incident');
     });
 
+    Route::middleware('can:view-global-calendar')->get('calendario-global', GlobalCalendarController::class)->name('calendar.global');
+    Route::middleware('can:view-reports')->prefix('relatorios')->name('reports.')->group(function () {
+        Route::get('/', [ReportController::class, 'index'])->name('index');
+        Route::get('exportar', [ReportController::class, 'export'])->name('export');
+    });
+    Route::middleware('can:view-audit')->get('auditoria', [AuditController::class, 'index'])->name('audit.index');
+
     Route::middleware('can:administer')->prefix('administracao')->name('admin.')->group(function () {
+        Route::get('utilizadores', [UserController::class, 'index'])->name('users.index');
+        Route::post('utilizadores', [UserController::class, 'store'])->name('users.store');
+        Route::put('utilizadores/{user}', [UserController::class, 'update'])->name('users.update');
+        Route::get('regras', [ReservationPolicyController::class, 'edit'])->name('policy.edit');
+        Route::put('regras', [ReservationPolicyController::class, 'update'])->name('policy.update');
+        Route::get('notificacoes/modelos', [NotificationTemplateController::class, 'edit'])->name('notification-templates.edit');
+        Route::put('notificacoes/modelos', [NotificationTemplateController::class, 'update'])->name('notification-templates.update');
         Route::get('snipe-it', [SnipeItController::class, 'index'])->name('snipe-it.index');
         Route::post('snipe-it/testar', [SnipeItController::class, 'testConnection'])->name('snipe-it.test');
         Route::post('snipe-it/sincronizar', [SnipeItController::class, 'sync'])->name('snipe-it.sync');
diff --git a/tests/Feature/AdminNotificationTemplateTest.php b/tests/Feature/AdminNotificationTemplateTest.php
new file mode 100644
index 0000000..becf1b4
--- /dev/null
+++ b/tests/Feature/AdminNotificationTemplateTest.php
@@ -0,0 +1,50 @@
+<?php
+
+use App\Domain\Administration\Services\NotificationTemplateService;
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Domain\Reservations\Enums\ReservationStatus;
+use App\Domain\Reservations\Models\Reservation;
+use App\Models\User;
+use App\Notifications\ReservationDecisionNotification;
+
+it('personaliza modelos e aplica variáveis às notificações', function () {
+    $administrator = User::factory()->create();
+    $administrator->roles()->attach(Role::firstOrCreate(['name' => RoleName::Administrator->value]));
+    $requester = User::factory()->create(['name' => 'Maria Docente']);
+    $reservation = Reservation::create([
+        'reference' => 'REQ-TEMPLATE-001',
+        'requester_id' => $requester->id,
+        'purpose' => 'Validação dos modelos configuráveis.',
+        'usage_location' => 'Biblioteca',
+        'starts_at' => now()->addDay(),
+        'ends_at' => now()->addDay()->addHours(2),
+        'status' => ReservationStatus::Approved,
+    ])->load('requester');
+
+    $templates = app(NotificationTemplateService::class)->templates();
+    $templates['approved'] = [
+        'subject' => 'Pedido {reference} confirmado',
+        'message' => 'Olá {requester}, o pedido {reference} foi confirmado. {comment}',
+    ];
+
+    $this->actingAs($administrator)
+        ->put('/administracao/notificacoes/modelos', ['templates' => $templates])
+        ->assertRedirect()
+        ->assertSessionHas('success');
+
+    $notification = new ReservationDecisionNotification($reservation, 'approved', 'Pode levantar às 09:00.');
+    $mail = $notification->toMail($requester);
+    $database = $notification->toArray($requester);
+
+    expect($mail->subject)->toBe('Pedido REQ-TEMPLATE-001 confirmado')
+        ->and($mail->introLines)->toContain('Olá Maria Docente, o pedido REQ-TEMPLATE-001 foi confirmado. Pode levantar às 09:00.')
+        ->and($database['message'])->toBe('Olá Maria Docente, o pedido REQ-TEMPLATE-001 foi confirmado. Pode levantar às 09:00.');
+    $this->assertDatabaseHas('audit_logs', ['event' => 'settings.notification_templates_updated']);
+});
+
+it('impede requisitantes de editar modelos de notificação', function () {
+    $this->actingAs(User::factory()->create())
+        ->get('/administracao/notificacoes/modelos')
+        ->assertForbidden();
+});
diff --git a/tests/Feature/AdminReservationPolicyTest.php b/tests/Feature/AdminReservationPolicyTest.php
new file mode 100644
index 0000000..46df320
--- /dev/null
+++ b/tests/Feature/AdminReservationPolicyTest.php
@@ -0,0 +1,141 @@
+<?php
+
+use App\Domain\Administration\Services\ReservationPolicy;
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Domain\Inventory\Models\SnipeAsset;
+use App\Domain\Reservations\Enums\ReservationItemStatus;
+use App\Domain\Reservations\Enums\ReservationStatus;
+use App\Domain\Reservations\Models\Reservation;
+use App\Domain\Reservations\Services\AvailabilityService;
+use App\Domain\Reservations\Services\ReservationService;
+use App\Models\User;
+use Carbon\CarbonImmutable;
+
+function policyAdministrator(): User
+{
+    $administrator = User::factory()->create();
+    $role = Role::firstOrCreate(['name' => RoleName::Administrator->value]);
+    $administrator->roles()->attach($role);
+
+    return $administrator;
+}
+
+/** @return array<string, int> */
+function policyValues(array $overrides = []): array
+{
+    return array_replace([
+        'reservation.min_notice_hours' => 0,
+        'reservation.max_duration_hours' => 168,
+        'reservation.turnaround_minutes' => 0,
+        'reservation.approval_deadline_hours' => 48,
+        'reservation.max_assets' => 10,
+    ], $overrides);
+}
+
+it('permite ao administrador alterar políticas com auditoria', function () {
+    $administrator = policyAdministrator();
+    $values = policyValues([
+        'reservation.min_notice_hours' => 24,
+        'reservation.turnaround_minutes' => 30,
+    ]);
+
+    $this->actingAs($administrator)
+        ->put('/administracao/regras', $values)
+        ->assertRedirect()
+        ->assertSessionHas('success');
+
+    expect(app(ReservationPolicy::class)->integer('reservation.min_notice_hours'))->toBe(24)
+        ->and(app(ReservationPolicy::class)->integer('reservation.turnaround_minutes'))->toBe(30);
+    $this->assertDatabaseHas('portal_settings', [
+        'key' => 'reservation.min_notice_hours',
+        'updated_by' => $administrator->id,
+    ]);
+    $this->assertDatabaseHas('audit_logs', ['event' => 'settings.reservation_policy_updated']);
+});
+
+it('rejeita períodos fora da antecedência e duração configuradas', function () {
+    $administrator = policyAdministrator();
+    app(ReservationPolicy::class)->update(policyValues([
+        'reservation.min_notice_hours' => 24,
+        'reservation.max_duration_hours' => 4,
+    ]), $administrator);
+    $requester = User::factory()->create();
+    $asset = SnipeAsset::factory()->create();
+
+    $this->actingAs($requester)
+        ->from('/requisicoes/nova')
+        ->post('/requisicoes', [
+            'purpose' => 'Atividade audiovisual com duração demasiado longa.',
+            'usage_location' => 'Auditório',
+            'starts_at' => now()->addHours(2)->toDateTimeString(),
+            'ends_at' => now()->addHours(8)->toDateTimeString(),
+            'asset_ids' => [$asset->id],
+            'terms_accepted' => true,
+        ])
+        ->assertRedirect('/requisicoes/nova')
+        ->assertSessionHasErrors(['starts_at', 'ends_at']);
+
+    $this->assertDatabaseCount('reservations', 0);
+});
+
+it('aplica margem temporal na consulta e na garantia de conflito', function () {
+    $administrator = policyAdministrator();
+    app(ReservationPolicy::class)->update(policyValues([
+        'reservation.turnaround_minutes' => 60,
+    ]), $administrator);
+    $requester = User::factory()->create();
+    $asset = SnipeAsset::factory()->create();
+    $reservation = Reservation::create([
+        'reference' => 'REQ-POLICY-MARGIN',
+        'requester_id' => $requester->id,
+        'purpose' => 'Reserva existente para validar a margem.',
+        'usage_location' => 'Estúdio',
+        'starts_at' => '2026-09-10 09:00:00',
+        'ends_at' => '2026-09-10 11:00:00',
+        'status' => ReservationStatus::Approved,
+    ]);
+    $reservation->items()->create([
+        'snipe_asset_id' => $asset->id,
+        'starts_at' => '2026-09-10 09:00:00',
+        'ends_at' => '2026-09-10 11:00:00',
+        'buffer_starts_at' => '2026-09-10 09:00:00',
+        'buffer_ends_at' => '2026-09-10 11:00:00',
+        'status' => ReservationItemStatus::Reserved,
+    ]);
+
+    $availability = app(AvailabilityService::class);
+    expect($availability->isAvailable(
+        $asset,
+        new DateTimeImmutable('2026-09-10 11:30:00'),
+        new DateTimeImmutable('2026-09-10 12:30:00'),
+    ))->toBeFalse()
+        ->and($availability->isAvailable(
+            $asset,
+            new DateTimeImmutable('2026-09-10 12:00:00'),
+            new DateTimeImmutable('2026-09-10 13:00:00'),
+        ))->toBeTrue();
+});
+
+it('grava buffers e prazo de aprovação definidos pela política', function () {
+    $administrator = policyAdministrator();
+    app(ReservationPolicy::class)->update(policyValues([
+        'reservation.turnaround_minutes' => 30,
+        'reservation.approval_deadline_hours' => 12,
+    ]), $administrator);
+    $startsAt = CarbonImmutable::parse('2026-09-20 10:00:00');
+    $endsAt = $startsAt->addHours(2);
+
+    $reservation = app(ReservationService::class)->createPending(User::factory()->create(), [
+        'purpose' => 'Atividade para validar políticas configuráveis.',
+        'usage_location' => 'Sala multimédia',
+        'starts_at' => $startsAt->toDateTimeString(),
+        'ends_at' => $endsAt->toDateTimeString(),
+        'asset_ids' => [SnipeAsset::factory()->create()->id],
+    ]);
+    $item = $reservation->items()->firstOrFail();
+
+    expect($item->buffer_starts_at->equalTo($startsAt->subMinutes(30)))->toBeTrue()
+        ->and($item->buffer_ends_at->equalTo($endsAt->addMinutes(30)))->toBeTrue()
+        ->and($reservation->created_at->diffInHours($reservation->approval_deadline))->toBe(12.0);
+});
diff --git a/tests/Feature/AdminUserManagementTest.php b/tests/Feature/AdminUserManagementTest.php
new file mode 100644
index 0000000..61603c4
--- /dev/null
+++ b/tests/Feature/AdminUserManagementTest.php
@@ -0,0 +1,117 @@
+<?php
+
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Models\User;
+use Illuminate\Support\Facades\Hash;
+use Inertia\Testing\AssertableInertia as Assert;
+
+function userManagementAdministrator(): User
+{
+    $user = User::factory()->create();
+    $role = Role::firstOrCreate(['name' => RoleName::Administrator->value]);
+    $user->roles()->attach($role);
+
+    return $user;
+}
+
+function ensureManagementRoles(): void
+{
+    foreach (RoleName::cases() as $role) {
+        Role::firstOrCreate(['name' => $role->value]);
+    }
+}
+
+it('restringe a gestão de utilizadores a administradores', function () {
+    $this->actingAs(User::factory()->create())
+        ->get('/administracao/utilizadores')
+        ->assertForbidden();
+
+    ensureManagementRoles();
+    $this->actingAs(userManagementAdministrator())
+        ->get('/administracao/utilizadores')
+        ->assertOk()
+        ->assertInertia(fn (Assert $page) => $page
+            ->component('admin/users/index')
+            ->has('roles', count(RoleName::cases())));
+});
+
+it('cria uma conta verificada com perfis e associação Snipe-IT', function () {
+    ensureManagementRoles();
+    $administrator = userManagementAdministrator();
+
+    $this->actingAs($administrator)
+        ->post('/administracao/utilizadores', [
+            'name' => 'Operadora de Inventário',
+            'email' => 'operadora@escola.pt',
+            'department' => 'Serviços de Informática',
+            'snipe_user_id' => 172,
+            'password' => 'temporaria-segura-2026',
+            'active' => true,
+            'roles' => [RoleName::Requester->value, RoleName::InventoryOperator->value],
+        ])
+        ->assertRedirect()
+        ->assertSessionHas('success');
+
+    $user = User::query()->where('email', 'operadora@escola.pt')->firstOrFail();
+    expect($user->email_verified_at)->not->toBeNull()
+        ->and($user->snipe_user_id)->toBe(172)
+        ->and($user->roles()->pluck('name')->sort()->values()->all())->toBe([
+            RoleName::InventoryOperator->value,
+            RoleName::Requester->value,
+        ]);
+    $this->assertDatabaseHas('audit_logs', [
+        'actor_id' => $administrator->id,
+        'event' => 'user.created',
+        'auditable_id' => $user->id,
+    ]);
+});
+
+it('atualiza dados perfis estado e palavra-passe com auditoria', function () {
+    ensureManagementRoles();
+    $administrator = userManagementAdministrator();
+    $user = User::factory()->create();
+    $user->roles()->attach(Role::query()->where('name', RoleName::Requester->value)->firstOrFail());
+
+    $this->actingAs($administrator)
+        ->put("/administracao/utilizadores/{$user->id}", [
+            'name' => 'Utilizador Atualizado',
+            'email' => $user->email,
+            'department' => 'Direção',
+            'snipe_user_id' => 88,
+            'password' => 'nova-palavra-passe-2026',
+            'active' => false,
+            'roles' => [RoleName::Auditor->value],
+        ])
+        ->assertRedirect()
+        ->assertSessionHas('success');
+
+    $user->refresh();
+    expect($user->name)->toBe('Utilizador Atualizado')
+        ->and($user->active)->toBeFalse()
+        ->and($user->hasRole(RoleName::Auditor))->toBeTrue()
+        ->and(Hash::check('nova-palavra-passe-2026', $user->password))->toBeTrue();
+    $this->assertDatabaseHas('audit_logs', ['event' => 'user.updated', 'auditable_id' => $user->id]);
+});
+
+it('impede o administrador de remover o próprio acesso', function () {
+    ensureManagementRoles();
+    $administrator = userManagementAdministrator();
+
+    $this->actingAs($administrator)
+        ->from('/administracao/utilizadores')
+        ->put("/administracao/utilizadores/{$administrator->id}", [
+            'name' => $administrator->name,
+            'email' => $administrator->email,
+            'department' => $administrator->department,
+            'snipe_user_id' => null,
+            'password' => null,
+            'active' => false,
+            'roles' => [RoleName::Requester->value],
+        ])
+        ->assertRedirect('/administracao/utilizadores')
+        ->assertSessionHasErrors('roles');
+
+    expect($administrator->fresh()->active)->toBeTrue()
+        ->and($administrator->hasRole(RoleName::Administrator))->toBeTrue();
+});
diff --git a/tests/Feature/PhaseSixReportingTest.php b/tests/Feature/PhaseSixReportingTest.php
new file mode 100644
index 0000000..f773fb1
--- /dev/null
+++ b/tests/Feature/PhaseSixReportingTest.php
@@ -0,0 +1,120 @@
+<?php
+
+use App\Domain\Audit\Models\AuditLog;
+use App\Domain\Identity\Enums\RoleName;
+use App\Domain\Identity\Models\Role;
+use App\Domain\Inventory\Models\SnipeAsset;
+use App\Domain\Reservations\Enums\ReservationItemStatus;
+use App\Domain\Reservations\Enums\ReservationStatus;
+use App\Domain\Reservations\Models\Reservation;
+use App\Models\User;
+use Inertia\Testing\AssertableInertia as Assert;
+
+function phaseSixUser(RoleName $role): User
+{
+    $user = User::factory()->create();
+    $user->roles()->attach(Role::firstOrCreate(['name' => $role->value]));
+
+    return $user;
+}
+
+function completedReportedReservation(User $requester): Reservation
+{
+    $asset = SnipeAsset::factory()->create([
+        'asset_tag' => 'REPORT-001',
+        'name' => 'Câmara de relatório',
+        'category_name' => 'Fotografia',
+    ]);
+    $reservation = Reservation::create([
+        'reference' => 'REQ-REPORT-001',
+        'requester_id' => $requester->id,
+        'purpose' => 'Produção de conteúdos para relatório.',
+        'usage_location' => 'Estúdio',
+        'starts_at' => now()->subDays(2),
+        'ends_at' => now()->subDays(2)->addHours(3),
+        'status' => ReservationStatus::Completed,
+    ]);
+    $reservation->items()->create([
+        'snipe_asset_id' => $asset->id,
+        'starts_at' => $reservation->starts_at,
+        'ends_at' => $reservation->ends_at,
+        'buffer_starts_at' => $reservation->starts_at,
+        'buffer_ends_at' => $reservation->ends_at,
+        'status' => ReservationItemStatus::Returned,
+        'delivered_at' => $reservation->starts_at,
+        'returned_at' => $reservation->ends_at,
+    ]);
+
+    return $reservation;
+}
+
+it('apresenta o calendário global apenas a perfis autorizados', function () {
+    $requester = phaseSixUser(RoleName::Requester);
+    $reservation = completedReportedReservation($requester);
+    $month = $reservation->starts_at->format('Y-m');
+
+    $this->actingAs($requester)->get("/calendario-global?month={$month}")->assertForbidden();
+
+    $this->actingAs(phaseSixUser(RoleName::Approver))
+        ->get("/calendario-global?month={$month}")
+        ->assertOk()
+        ->assertInertia(fn (Assert $page) => $page
+            ->component('reservations/calendar')
+            ->where('scope', 'global')
+            ->has('reservations', 1)
+            ->where('reservations.0.reference', 'REQ-REPORT-001')
+            ->where('reservations.0.requester.id', $requester->id));
+});
+
+it('calcula indicadores e exporta detalhe em CSV', function () {
+    $requester = User::factory()->create([
+        'name' => '=HYPERLINK("https://invalid.test")',
+        'department' => 'Comunicação',
+    ]);
+    completedReportedReservation($requester);
+    $auditor = phaseSixUser(RoleName::Auditor);
+    $query = http_build_query([
+        'date_from' => now()->subDays(7)->toDateString(),
+        'date_to' => now()->toDateString(),
+    ]);
+
+    $this->actingAs($auditor)
+        ->get("/relatorios?{$query}")
+        ->assertOk()
+        ->assertInertia(fn (Assert $page) => $page
+            ->component('reports/index')
+            ->where('summary.total', 1)
+            ->where('summary.completed', 1)
+            ->where('summary.utilizationHours', 3)
+            ->where('byCategory.Fotografia', 1)
+            ->where('byDepartment.Comunicação', 1));
+
+    $response = $this->actingAs($auditor)->get("/relatorios/exportar?{$query}");
+    $response->assertOk()->assertDownload();
+    expect($response->streamedContent())->toContain(
+        'REQ-REPORT-001',
+        'REPORT-001',
+        'Comunicação',
+        "'=HYPERLINK",
+    );
+});
+
+it('disponibiliza auditoria imutável a auditores e administradores', function () {
+    $actor = User::factory()->create();
+    AuditLog::create([
+        'actor_id' => $actor->id,
+        'event' => 'reservation.test_audit',
+        'metadata' => ['reference' => 'REQ-AUDIT-001'],
+    ]);
+
+    $this->actingAs(User::factory()->create())->get('/auditoria')->assertForbidden();
+
+    $this->actingAs(phaseSixUser(RoleName::Auditor))
+        ->get('/auditoria?event=test_audit')
+        ->assertOk()
+        ->assertInertia(fn (Assert $page) => $page
+            ->component('audit/index')
+            ->has('logs.data', 1)
+            ->where('logs.data.0.event', 'reservation.test_audit')
+            ->where('logs.data.0.actor.name', $actor->name));
+});