Add contract management and invoice settings pages

- Created a new Blade view for managing brand contracts with forms for adding and editing contracts, including client and category selection.
- Implemented success message notifications for contract actions.
- Added a new Blade view for invoice settings, allowing customization of invoice number format, header branding, and default values for new invoices.
- Introduced a new PDF view for generating rate cards with customizable styles based on user profile settings.
- Developed a profile management page for rate cards, enabling users to update their identity, appearance, and visibility settings.

app/Models/BrandContract.php

@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class BrandContract extends Model
+{
+    protected $fillable = [
+        'title', 'client_id', 'category_id',
+        'start_date', 'end_date', 'notes', 'is_active',
+    ];
+
+    protected $casts = [
+        'start_date' => 'date',
+        'end_date'   => 'date',
+        'is_active'  => 'boolean',
+    ];
+
+    // ── Relationships ────────────────────────────────────────────
+
+    public function client(): BelongsTo
+    {
+        return $this->belongsTo(Client::class);
+    }
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(ClientCategory::class, 'category_id');
+    }
+
+    // ── Scopes ───────────────────────────────────────────────────
+
+    public function scopeActive($query)
+    {
+        return $query->where('is_active', true)
+                     ->where('start_date', '<=', today())
+                     ->where('end_date', '>=', today());
+    }
+
+    // ── Helpers ──────────────────────────────────────────────────
+
+    public function isCurrentlyActive(): bool
+    {
+        return $this->is_active
+            && $this->start_date->lte(today())
+            && $this->end_date->gte(today());
+    }
+
+    public function getDaysRemainingAttribute(): int
+    {
+        return (int) max(0, today()->diffInDays($this->end_date, false));
+    }
+
+    public function getStatusLabelAttribute(): string
+    {
+        if (! $this->is_active) return 'Inactive';
+        if ($this->start_date->gt(today())) return 'Upcoming';
+        if ($this->end_date->lt(today())) return 'Expired';
+        return 'Active';
+    }
+
+    public function getStatusColorAttribute(): string
+    {
+        return match ($this->statusLabel) {
+            'Active'    => 'badge-success',
+            'Upcoming'  => 'badge-info',
+            'Expired'   => 'badge-neutral',
+            default     => 'badge-ghost',
+        };
+    }
+}