reze: Add Node.js password generator with memorable and random modes

Public password generator with no auth and no npm dependencies.

- Server-side generation using crypto.randomInt; two levels: diceware-style
  memorable passphrases (42abacus-91abdomen) and fully random characters.
- Configurable word list (EFF Large / EFF Short), digits per word, separators,
  capitalization, length, character class toggles, custom symbols and
  ambiguous-character exclusion.
- Light/dark theme matching druid520/site, entropy estimate and strength bar,
  clipboard copy, options persisted in localStorage.
- Dockerfile for Dokploy plus a Woodpecker deploy hook on trunk.

public/404.html

@@ -0,0 +1,19 @@
+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>Not found · reze-test</title>
+<link rel="stylesheet" href="/style.css">
+<script src="/theme.js"></script>
+</head>
+<body>
+<main class="error">
+  <div class="topbar"><button id="theme-toggle" class="theme-toggle" type="button" hidden>Dark mode</button></div>
+  <h2>Error 404</h2>
+  <h1>Not found</h1>
+  <p>There's nothing at this address.</p>
+  <a href="/">Back to reze-test</a>
+</main>
+</body>
+</html>