5.4.0

Restructure
New Journal entries
Colour tabs update with wind

api/register.php

@@ -0,0 +1,30 @@
+<?php
+// POST { email, password } -> creates an account, signs the user in.
+require __DIR__ . '/../lib/bootstrap.php';
+require_method('POST');
+
+$body     = json_body();
+$email    = strtolower(trim($body['email'] ?? ''));
+$password = (string)($body['password'] ?? '');
+
+if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+    json_error('Enter a valid email address.');
+}
+if (strlen($password) < 8) {
+    json_error('Password must be at least 8 characters.');
+}
+
+$stmt = db()->prepare('SELECT id FROM users WHERE email = ?');
+$stmt->execute([$email]);
+if ($stmt->fetch()) {
+    json_error('An account with that email already exists.', 409);
+}
+
+$hash = password_hash($password, PASSWORD_ARGON2ID);
+$stmt = db()->prepare(
+    'INSERT INTO users (public_id, email, password_hash) VALUES (?, ?, ?)'
+);
+$stmt->execute([new_public_id(), $email, $hash]);
+
+issue_session((int)db()->lastInsertId());
+json_out(['ok' => true, 'email' => $email]);