feat: splash window (#1370)

* feat(splash): show startup activity

* refactor(splash): remove preview shortcut

* chore(resources): refresh startup registries

* feat(chat): add ACP config loading indicator and popover state tracking

* fix(lifecycle): remove lifecycle listeners and clear activities on SplashWindowManager close

Author: zerob13

resources/acp-registry/registry.json

@@ -226,7 +226,7 @@
       "license": "Apache-2.0",
       "distribution": {
         "uvx": {
-          "package": "crow-cli==0.1.14",
+          "package": "crow-cli",
           "args": [
             "acp"
           ]