🔒 Add Nostr authentication support with custom guard and user provider

🛠️ Integrate Nostr auth across relevant components and views
📦 Update config, routes, and service provider for Nostr auth

app/Auth/NostrSessionGuard.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Auth;
+
+use Illuminate\Auth\SessionGuard;
+use Illuminate\Contracts\Auth\Authenticatable;
+
+class NostrSessionGuard extends SessionGuard
+{
+    public function loginByPubkey(string $pubkey): void
+    {
+        $user = new NostrUser($pubkey);
+
+        $this->updateSession($user->getAuthIdentifier());
+
+        $this->setUser($user);
+
+        $this->fireLoginEvent($user, false);
+    }
+
+    protected function updateSession($id): void
+    {
+        $this->session->put($this->getName(), $id);
+        $this->session->migrate(true);
+    }
+
+    public function user(): ?Authenticatable
+    {
+        if ($this->user !== null) {
+            return $this->user;
+        }
+
+        $id = $this->session->get($this->getName());
+
+        if ($id !== null) {
+            $this->user = $this->provider->retrieveById($id);
+        }
+
+        return $this->user;
+    }
+}

app/Auth/NostrUser.php

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+<?php
+
+namespace App\Auth;
+
+use Illuminate\Contracts\Auth\Authenticatable;
+
+class NostrUser implements Authenticatable
+{
+    protected string $pubkey;
+    protected ?object $pleb;
+
+    public function __construct(string $pubkey)
+    {
+        $this->pubkey = $pubkey;
+        $this->pleb = \App\Models\EinundzwanzigPleb::query()
+            ->where('pubkey', $pubkey)
+            ->first();
+    }
+
+    public function getAuthIdentifierName(): string
+    {
+        return 'pubkey';
+    }
+
+    public function getAuthIdentifier(): string
+    {
+        return $this->pubkey;
+    }
+
+    public function getAuthPassword(): string
+    {
+        return '';
+    }
+
+    public function getRememberToken(): ?string
+    {
+        return null;
+    }
+
+    public function setRememberToken($value): void
+    {
+        //
+    }
+
+    public function getRememberTokenName(): ?string
+    {
+        return null;
+    }
+
+    public function getAuthPasswordName(): string
+    {
+        return 'password';
+    }
+
+    public function getPubkey(): string
+    {
+        return $this->pubkey;
+    }
+
+    public function getPleb(): ?object
+    {
+        return $this->pleb;
+    }
+}

app/Auth/NostrUserProvider.php

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+<?php
+
+namespace App\Auth;
+
+use Illuminate\Contracts\Auth\Authenticatable;
+use Illuminate\Contracts\Auth\UserProvider;
+
+class NostrUserProvider implements UserProvider
+{
+    public function retrieveById($identifier): ?Authenticatable
+    {
+        return new NostrUser($identifier);
+    }
+
+    public function retrieveByToken($identifier, $token): ?Authenticatable
+    {
+        return null;
+    }
+
+    public function updateRememberToken(Authenticatable $user, $token): void
+    {
+        //
+    }
+
+    public function retrieveByCredentials(array $credentials): ?Authenticatable
+    {
+        if (isset($credentials['pubkey'])) {
+            return new NostrUser($credentials['pubkey']);
+        }
+
+        return null;
+    }
+
+    public function validateCredentials(Authenticatable $user, array $credentials): bool
+    {
+        return $user instanceof NostrUser && $user->getPubkey() === ($credentials['pubkey'] ?? null);
+    }
+
+    public function rehashPasswordIfRequired(Authenticatable $user, array $credentials, bool $force = false): void
+    {
+        //
+    }
+}