chore: rename extension to LightSession Pro for ChatGPT (#9)

* feat(chrome): add Chrome Web Store support

- Add separate manifests for Chrome and Firefox
- Fix cross-browser API compatibility (browser vs chrome)
- Fix Chrome MV3 async messaging (sendResponse pattern)
- Fix CustomEvent detail passing via JSON serialization
- Add auto-reload on settings change
- Add tabs permission for reload functionality
- Add .dev marker for debug mode detection
- Add comprehensive tests (188 total)

* fix(chrome): add retry logic for service worker wake-up

Chrome MV3 service workers can be inactive when popup opens, causing
sendMessage to return undefined. Added exponential backoff retry logic
(50ms, 100ms, 200ms) to handle service worker wake-up delay.

- Add MESSAGE_RETRY_DELAYS_MS constant for backoff intervals
- Validate response is not undefined before returning
- Check chrome.runtime.lastError in Chrome context
- Add 5 new tests for retry scenarios

* chore: rename extension to LightSession Pro for ChatGPT

Update name in both Chrome and Firefox manifests for better
visibility in extension stores.

Author: 11me

extension/manifest.chrome.json

@@ -1,6 +1,6 @@
 {
   "manifest_version": 3,
-  "name": "LightSession Pro",
+  "name": "LightSession Pro for ChatGPT",
   "version": "1.6.1",
   "description": "Keep ChatGPT fast by keeping only the last N messages in the DOM. Local-only.",
   "icons": {

extension/manifest.firefox.json

@@ -1,6 +1,6 @@
 {
   "manifest_version": 3,
-  "name": "LightSession Pro",
+  "name": "LightSession Pro for ChatGPT",
   "version": "1.6.1",
   "description": "Keep ChatGPT fast by keeping only the last N messages in the DOM. Local-only.",
   "icons": {

extension/src/shared/messages.ts

@@ -34,9 +34,9 @@ export async function sendMessageWithTimeout<T extends RuntimeResponse>(
 
       // Check Chrome lastError (set when no listener exists)
       if (isChrome) {
-        const lastError = (chrome as { runtime: { lastError?: { message?: string } } }).runtime.lastError;
-        if (lastError) {
-          throw new Error(lastError.message ?? 'Chrome runtime error');
+        const chromeLastError = (chrome as { runtime: { lastError?: { message?: string } } }).runtime.lastError;
+        if (chromeLastError) {
+          throw new Error(chromeLastError.message ?? 'Chrome runtime error');
         }
       }