chore: complete combined branch changesets

Author: KyleAMathews

.changeset/upgrade-pi-agent-core-openai.md

@@ -3,7 +3,9 @@
 '@electric-ax/agents-runtime': patch
 '@electric-ax/agents-server': patch
 '@electric-ax/agents-server-conformance-tests': patch
+'@electric-ax/agents-server-ui': patch
 '@electric-ax/agents-desktop': patch
+'electric-ax': patch
 ---
 
 Update the agents runtime to the renamed Earendil Works pi packages and latest OpenAI/Codex model catalog. Preserve custom provider id compatibility, move built-in Codex defaults to GPT-5.6 models, and remove deprecated direct pi-agent-core dependencies from agents examples.