fix(update): auto-install minor bumps, version 1.0.20 for patch delivery (#3342)

The 1.0.x → 1.1.0 minor bump blocked auto-update for all users since
only patch bumps were auto-installed. Users without SPAWN_AUTO_UPDATE=1
were stuck on 1.0.x and never received the telemetry fix.

Version set to 1.0.20 so existing 1.0.x users see it as a patch bump
and auto-install it. The new update logic then allows future minor bumps
(same major) to auto-install too. Only major bumps (2.0.0+) require
SPAWN_AUTO_UPDATE=1.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openrouter/spawn",
-  "version": "1.1.1",
+  "version": "1.0.20",
   "type": "module",
   "bin": {
     "spawn": "cli.js"