feat: add paired Chrome bridge authentication

chrome-extension/options.js

@@ -0,0 +1,61 @@
+'use strict';
+
+const PAIRING_STORAGE_KEY = 'aptPairingSecret';
+const PAIRING_SECRET_PATTERN = /^[A-Za-z0-9_-]{43}$/;
+
+const pairingForm = document.getElementById('pairingForm');
+const pairingSecretInput = document.getElementById('pairingSecret');
+const pairingStatus = document.getElementById('pairingStatus');
+const currentState = document.getElementById('currentState');
+const forgetBtn = document.getElementById('forgetBtn');
+
+function setStatus(message, type) {
+  pairingStatus.textContent = message;
+  pairingStatus.className = `status ${type}`;
+}
+
+function renderPairingState(paired) {
+  currentState.textContent = paired ? 'Paired on this Chrome profile.' : 'Not paired.';
+  currentState.className = paired ? 'paired' : 'unpaired';
+  forgetBtn.disabled = !paired;
+}
+
+async function refreshPairingState() {
+  const stored = await chrome.storage.local.get(PAIRING_STORAGE_KEY);
+  const candidate = stored && stored[PAIRING_STORAGE_KEY];
+  renderPairingState(PAIRING_SECRET_PATTERN.test(typeof candidate === 'string' ? candidate : ''));
+}
+
+pairingForm.addEventListener('submit', async (event) => {
+  event.preventDefault();
+  const candidate = pairingSecretInput.value.trim();
+  pairingSecretInput.value = '';
+
+  if (!PAIRING_SECRET_PATTERN.test(candidate)) {
+    setStatus('That secret is not valid. Generate a new pairing secret in APT and paste it exactly.', 'error');
+    return;
+  }
+
+  try {
+    await chrome.storage.local.set({ [PAIRING_STORAGE_KEY]: candidate });
+    setStatus('Pairing saved. You can now use Send to APT from an Alta tab.', 'success');
+    renderPairingState(true);
+  } catch {
+    setStatus('Chrome could not save the pairing. Try again.', 'error');
+  }
+});
+
+forgetBtn.addEventListener('click', async () => {
+  try {
+    await chrome.storage.local.remove(PAIRING_STORAGE_KEY);
+    renderPairingState(false);
+    setStatus('Pairing forgotten. Revoke or rotate it in APT as well.', 'success');
+  } catch {
+    setStatus('Chrome could not forget the pairing. Try again.', 'error');
+  }
+});
+
+refreshPairingState().catch(() => {
+  renderPairingState(false);
+  setStatus('Chrome could not read pairing state.', 'error');
+});