Rename Liens étudiant·e, add link name + edit dialog

- Rename 'Accès étudiant·e' → 'Liens étudiant·e' in acces.php
- Add 'name' column to share_links (schema.sql + ALTER TABLE migration)
- ShareLink::create() now accepts optional  parameter
- Add ShareLink::update() method for name/password/expiration
- Add 'update' action to acces-etudiante.php controller
- Remove Visiter (play) button; row click opens link in new tab
- Add edit dialog with name, password, expiration fields
- Add pen icon button to open edit dialog per row
- Add Nom column to table (also in archived links section)

app/src/Database.php

@@ -29,12 +29,26 @@ class Database
             $this->pdo->exec('PRAGMA journal_mode = WAL');
             $this->pdo->exec('PRAGMA synchronous = NORMAL');
             $this->pdo->exec('PRAGMA cache_size = -8000');
+            $this->runMigrations();
         } catch (PDOException $e) {
             error_log('Database connection failed: ' . $e->getMessage());
             throw new Exception('Impossible de se connecter à la base de données.');
         }
     }
 
+    /**
+     * Run one-off schema migrations.
+     */
+    private function runMigrations(): void
+    {
+        // Add 'name' column to share_links if missing
+        try {
+            $this->pdo->exec("ALTER TABLE share_links ADD COLUMN name TEXT");
+        } catch (\PDOException $e) {
+            // Column already exists — ignore
+        }
+    }
+
     /**
      * Determine database path.
      * Priority: explicit override → APP_ROOT /storage/xamxam.db.