feat(install): sideload gbot into Grok Bot's ScriptedAlchemy/plugins marketplace (agent-bundle 0bbc7c3) (#138)

Author: ScriptedAlchemy

.changeset/grokbot-sideload.md

@@ -0,0 +1,5 @@
+---
+"grok-bot-cli": patch
+---
+
+`gbot-install install grokbot` now sideloads gbot into the ScriptedAlchemy/plugins marketplace snapshot Grok Bot already syncs on its computer (plugin folder + marketplace.json entry + `plugins/cache/scriptedalchemy-plugins/gbot/<commit>/` with `.cache-complete`, the same layout as pstack), via agent-bundle 0bbc7c3. Re-running restores a pruned sideload; `GROK_BOT_SIDELOAD=0` disables it.