feat: implement internship journal entry system with printable reports and approval workflow

app/Models/CareerApplication.php

@@ -32,8 +32,21 @@ class CareerApplication extends Model
         'github_repo',
         'certificate_code',
         'transcript_markdown',
+        'notebook_supervisor_signed',
+        'notebook_supervisor_name',
+        'notebook_unit_signed',
+        'notebook_unit_name',
+        'notebook_approved',
     ];
 
+    /**
+     * Get the journal entries for the internship application.
+     */
+    public function journalEntries()
+    {
+        return $this->hasMany(InternshipJournalEntry::class);
+    }
+
     protected static function booted()
     {
         static::saving(function ($model) {
@@ -58,6 +71,9 @@ class CareerApplication extends Model
     {
         return [
             'password' => 'hashed',
+            'notebook_supervisor_signed' => 'boolean',
+            'notebook_unit_signed' => 'boolean',
+            'notebook_approved' => 'boolean',
         ];
     }
 }

app/Models/InternshipJournalEntry.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class InternshipJournalEntry extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'career_application_id',
+        'day_number',
+        'date',
+        'content',
+    ];
+
+    /**
+     * Get the career application that owns this journal entry.
+     */
+    public function careerApplication()
+    {
+        return $this->belongsTo(CareerApplication::class);
+    }
+}