Add comprehensive thesis management system with database migration

This commit introduces a complete thesis management interface and migrates
the system from YAML-based storage to SQLite:

Core Changes:
- Add Database.php helper class with PDO connection and entity management
- Add list.php for viewing all theses with filtering and sorting
- Add edit.php for modifying existing thesis records
- Add import.php for migrating legacy YAML data to SQLite
- Add justfile with development tasks (serve, init-test-db, etc.)

Documentation:
- Add MIGRATION.md with complete migration guide and architecture docs
- Update README.md with database setup and Just recipe instructions
- Update .gitignore to exclude test databases and error logs

Modified Forms:
- Enhanced formulaire.php with transaction-based SQLite processing
- Updated index.php with database-driven form options
- Improved thanks.php to read from database views

The new architecture provides:
- Normalized database schema (19 tables, 2 views)
- Transaction safety and referential integrity
- CRUD operations for thesis management
- Filtering by year, orientation, AP program, publication status
- Secure file handling with metadata tracking

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

front-backend/memoire.php

@@ -5,16 +5,27 @@ ini_set('log_errors', 1);
 ini_set('error_log', 'error.log');
 
 // Load required libraries and classes
-require_once 'vendor/autoload.php';
-use Symfony\Component\Yaml\Yaml;
+require_once 'Database.php';
 
-// Check if a file parameter is provided in the URL
-if (isset($_GET['file'])) {
-  // Decode the URL parameter and parse the YAML file
-  $yamlFile = urldecode($_GET['file']);
-  $data = Yaml::parseFile($yamlFile);
+// Check if an id parameter is provided in the URL
+if (isset($_GET['id'])) {
+  $thesisId = intval($_GET['id']);
+  try {
+    $db = Database::getInstance();
+    $data = $db->getThesisById($thesisId);
+
+    if (!$data) {
+      // Thesis not found or not published
+      header('Location: index.php');
+      exit;
+    }
+  } catch (Exception $e) {
+    error_log("Error loading thesis: " . $e->getMessage());
+    header('Location: index.php');
+    exit;
+  }
 } else {
-  // Redirect to the index page if no file parameter is provided
+  // Redirect to the index page if no id parameter is provided
   header('Location: index.php');
   exit;
 }
@@ -29,74 +40,119 @@ include 'inc/header.php'; ?>
       <div class="column is-one-third">
         <div class="card">
           <div class="card-content">
-            <!-- Display the title and author from the YAML data -->
+            <!-- Display the title and author from the database -->
             <h1 class="title">
-              <?= $data['titre']; ?>
+              <?= htmlspecialchars($data['title']); ?>
+              <?php if (!empty($data['subtitle'])): ?>
+                <br><small><?= htmlspecialchars($data['subtitle']); ?></small>
+              <?php endif; ?>
             </h1>
             <h2 class="subtitle">par
-              <?= $data['auteurice']; ?>
+              <?= htmlspecialchars($data['authors'] ?? 'Auteur inconnu'); ?>
             </h2>
 
             <h3 class="subtitle"></h3>
             <div class="columns">
               <div class="column is-half ">
-                <h3 class="subtitle">
-                  <?= $data['orientation']; ?> et
-                  <?= $data['ap']; ?>
-                </h3>
+                <?php if (!empty($data['orientation']) || !empty($data['ap_program'])): ?>
+                  <h3 class="subtitle">
+                    <?php if (!empty($data['orientation'])): ?>
+                      <?= htmlspecialchars($data['orientation']); ?>
+                    <?php endif; ?>
+                    <?php if (!empty($data['orientation']) && !empty($data['ap_program'])): ?>
+                      et
+                    <?php endif; ?>
+                    <?php if (!empty($data['ap_program'])): ?>
+                      <?= htmlspecialchars($data['ap_program']); ?>
+                    <?php endif; ?>
+                  </h3>
+                <?php endif; ?>
                 <p class="block tag subtitle is-6">
-                  <?= $data['année']; ?>
+                  <?= htmlspecialchars($data['year']); ?>
                 </p>
+                <?php if (!empty($data['finality_type'])): ?>
+                  <p class="block">
+                    <strong>Finalité:</strong> <?= htmlspecialchars($data['finality_type']); ?>
+                  </p>
+                <?php endif; ?>
               </div>
 
               <div class="column">
-                <p class="block">
-                  <?= $data['problématique']; ?>
-                </p>
+                <?php if (!empty($data['context_note'])): ?>
+                  <p class="block">
+                    <em><?= htmlspecialchars($data['context_note']); ?></em>
+                  </p>
+                <?php endif; ?>
 
-                <p class="block">
-                  <strong>Contact:</strong>
-                  <?= $data['email']; ?>
-                </p>
-                <p class="block">
-                  <strong>Promoteur.ice.s:</strong>
-                  <?= $data['promoteurice']; ?>
-                </p>
+                <?php if (!empty($data['supervisors'])): ?>
+                  <p class="block">
+                    <strong>Promoteur.ice.s:</strong>
+                    <?= htmlspecialchars($data['supervisors']); ?>
+                  </p>
+                <?php endif; ?>
+
+                <?php if (!empty($data['languages'])): ?>
+                  <p class="block">
+                    <strong>Langue(s):</strong>
+                    <?= htmlspecialchars($data['languages']); ?>
+                  </p>
+                <?php endif; ?>
+
+                <?php if (!empty($data['formats'])): ?>
+                  <p class="block">
+                    <strong>Format(s):</strong>
+                    <?= htmlspecialchars($data['formats']); ?>
+                  </p>
+                <?php endif; ?>
+
+                <?php if (!empty($data['keywords'])): ?>
+                  <p class="block">
+                    <strong>Mots-clés:</strong>
+                    <?= htmlspecialchars($data['keywords']); ?>
+                  </p>
+                <?php endif; ?>
               </div>
             </div>
           </div>
         </div>
         <div class="box">
-          <?= $data['description']; ?>
+          <?php if (!empty($data['synopsis'])): ?>
+            <?= nl2br(htmlspecialchars($data['synopsis'])); ?>
+          <?php endif; ?>
         </div>
       </div>
 
       <div class="column is-two-third">
         <div class="content">
-          <!-- Check if there are any files in the YAML data -->
-          <?php if (isset($data['files'])): ?>
+          <!-- Check if there are any files in the database -->
+          <?php if (isset($data['files']) && count($data['files']) > 0): ?>
             <!-- Loop through the files and display them based on their file type -->
             <?php foreach ($data['files'] as $file): ?>
-              <?php $ext = pathinfo($file, PATHINFO_EXTENSION); ?>
+              <?php $ext = strtolower(pathinfo($file['file_path'], PATHINFO_EXTENSION)); ?>
               <div class="block">
                 <?php if ($ext === 'pdf'): ?>
                   <!-- Display PDF files using the embed element -->
-                  <embed src="<?= $file; ?>" type="application/pdf" width="100%" height="600px" />
+                  <embed src="<?= htmlspecialchars($file['file_path']); ?>" type="application/pdf" width="100%" height="600px" />
                 <?php elseif (in_array($ext, ['jpg', 'jpeg', 'png', 'gif', 'bmp'])): ?>
                   <!-- Display image files using the img element -->
                   <figure>
-                    <img src="<?= $file; ?>" alt="Image file">
+                    <img src="<?= htmlspecialchars($file['file_path']); ?>" alt="<?= htmlspecialchars($file['file_name']); ?>">
                   </figure>
                 <?php elseif ($ext === 'mp4'): ?>
                   <!-- Display MP4 video files using the video element -->
                   <video width="100%" height="auto" controls>
-                    <source src="<?= $file; ?>" type="video/mp4">
+                    <source src="<?= htmlspecialchars($file['file_path']); ?>" type="video/mp4">
                     Your browser does not support the video tag.
                   </video>
                 <?php endif; ?>
+                <?php if (!empty($file['description'])): ?>
+                  <p class="help"><?= htmlspecialchars($file['description']); ?></p>
+                <?php endif; ?>
               </div>
 
             <?php endforeach; ?>
+          <?php else: ?>
+            <p class="notification is-warning">Aucun fichier disponible pour ce mémoire.</p>
           <?php endif; ?>
         </div>