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/index.html

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+<!doctype html>
+<html lang="en">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>reze-test</title>
+<meta name="description" content="Password generator: diceware-style passphrases or fully random characters. Nothing is stored.">
+<link rel="stylesheet" href="/style.css">
+<script src="/theme.js"></script>
+</head>
+<body>
+<main>
+  <div class="topbar"><button id="theme-toggle" class="theme-toggle" type="button" hidden>Dark mode</button></div>
+  <h1>reze-test</h1>
+  <p class="lead">Password generator. Diceware-style passphrases or fully random characters &mdash; generated locally on the server with a CSPRNG. Nothing you generate is stored.</p>
+
+  <h2>Mode</h2>
+  <div class="radios">
+    <label class="radio"><input type="radio" name="mode" value="memorable" checked> Memorable</label>
+    <label class="radio"><input type="radio" name="mode" value="random"> Random</label>
+  </div>
+
+  <section id="panel-memorable">
+    <h2>Passphrase</h2>
+
+    <div class="field">
+      <label for="words">Words per passphrase</label>
+      <input type="number" id="words" min="2" max="10" step="1" value="4">
+    </div>
+
+    <div class="field">
+      <label for="digits">Digits per word</label>
+      <input type="number" id="digits" min="0" max="4" step="1" value="2">
+    </div>
+
+    <div class="field">
+      <label for="digitSeparator">Digit separator</label>
+      <select id="digitSeparator">
+        <option value="" selected>none</option>
+        <option value="-">- (hyphen)</option>
+      </select>
+    </div>
+
+    <div class="field">
+      <label for="separator">Group separator</label>
+      <select id="separator">
+        <option value="-">- (hyphen)</option>
+        <option value="_">_ (underscore)</option>
+        <option value=".">. (dot)</option>
+        <option value=" ">space</option>
+        <option value="">none</option>
+      </select>
+    </div>
+
+    <div class="field">
+      <label for="capitalization">Capitalization</label>
+      <select id="capitalization">
+        <option value="none" selected>none</option>
+        <option value="title">Title case</option>
+        <option value="upper">UPPERCASE</option>
+      </select>
+    </div>
+
+    <div class="field">
+      <label for="list">Word set</label>
+      <select id="list">
+        <option value="eff-large">EFF Large Word List</option>
+        <option value="eff-short">EFF Short Word List (2.0)</option>
+      </select>
+    </div>
+  </section>
+
+  <section id="panel-random" hidden>
+    <h2>Random</h2>
+
+    <div class="field">
+      <label for="length">Length</label>
+      <div class="range-row">
+        <input type="range" id="length" min="8" max="64" step="1" value="20">
+        <output id="length-out" for="length">20</output>
+      </div>
+    </div>
+
+    <div class="checks">
+      <label class="check"><input type="checkbox" id="useLower" checked> lowercase</label>
+      <label class="check"><input type="checkbox" id="useUpper" checked> uppercase</label>
+      <label class="check"><input type="checkbox" id="useDigits" checked> digits</label>
+      <label class="check"><input type="checkbox" id="useSymbols"> symbols</label>
+      <label class="check"><input type="checkbox" id="excludeAmbiguous"> exclude ambiguous characters</label>
+      <label class="check"><input type="checkbox" id="requireEach" checked> require at least one of each selected set</label>
+    </div>
+
+    <div class="field">
+      <label for="customSymbols">Custom symbols</label>
+      <input type="text" id="customSymbols" value="" placeholder="!@#$%^&amp;*()-_=+[]{};:,.&lt;&gt;?" autocomplete="off" spellcheck="false">
+    </div>
+  </section>
+
+  <h2>Output</h2>
+
+  <div class="field">
+    <label for="count">How many passwords</label>
+    <input type="number" id="count" min="1" max="10" step="1" value="1">
+  </div>
+
+  <div class="actions">
+    <button id="generate" class="button primary" type="button">Generate</button>
+    <button id="regenerate" class="button" type="button">Regenerate</button>
+  </div>
+
+  <p id="error" class="error-line" hidden></p>
+
+  <div id="results"></div>
+</main>
+<script src="/app.js"></script>
+</body>
+</html>