feat: add options panel embedded in about:addons

options/options.html

@@ -0,0 +1,60 @@
+<!-- Rendered inline inside about:addons. Keep it narrow-friendly and do not
+     rely on window sizing; a pref can degrade this to a standalone tab. -->
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1" />
+<title>Search with ChatGPT — Options</title>
+<link rel="stylesheet" href="options.css" />
+
+<form id="settings" autocomplete="off">
+  <div class="field">
+    <label for="model">Model <span class="tag">experimental</span></label>
+    <input type="text" id="model" placeholder="auto" spellcheck="false" />
+    <p class="hint">
+      ChatGPT may ignore this and use your account default. Leave blank to
+      always use your account default.
+    </p>
+  </div>
+
+  <div class="field checkbox">
+    <label><input type="checkbox" id="temporaryChat" /> Request a temporary chat</label>
+    <p class="hint">
+      ChatGPT may not honour this. Check ChatGPT's own indicator before sending
+      anything sensitive.
+    </p>
+  </div>
+
+  <div class="field checkbox">
+    <label><input type="checkbox" id="webSearch" /> Ask ChatGPT to use web search (hint only)</label>
+    <p class="hint">A hint to ChatGPT's interface, not a guarantee.</p>
+  </div>
+
+  <div class="field">
+    <label for="openIn">Open in</label>
+    <select id="openIn">
+      <option value="new-tab">A new tab</option>
+      <option value="background-tab">A new background tab</option>
+      <option value="new-window">A new window</option>
+    </select>
+  </div>
+
+  <div class="field">
+    <label for="promptTemplate">Prompt template</label>
+    <input type="text" id="promptTemplate" spellcheck="false" />
+    <p class="hint"><code>{query}</code> is replaced with your selected text.</p>
+  </div>
+
+  <div class="actions">
+    <button type="button" id="restore">Restore defaults</button>
+    <span id="status" role="status" aria-live="polite"></span>
+  </div>
+</form>
+
+<p class="note">
+  Selecting text and choosing <strong>Ask ChatGPT</strong> — or pressing
+  <kbd>Alt</kbd>+<kbd>Shift</kbd>+<kbd>G</kbd> — opens ChatGPT with your text
+  filled in. ChatGPT no longer submits prompts that arrive from a link, so press
+  Enter there to send. Change the shortcut under
+  <em>Manage Extension Shortcuts</em> in Add-ons.
+</p>
+
+<script type="module" src="options.js"></script>