feat: add Claude and Codex configs to dotfiles

dot_codex/config.toml

@@ -0,0 +1,16 @@
+model = "gpt-5.5"
+model_reasoning_effort = "medium"
+personality = "pragmatic"
+service_tier = "fast"
+
+[plugins."github@openai-curated"]
+enabled = true
+
+[plugins."documents@openai-primary-runtime"]
+enabled = true
+
+[plugins."spreadsheets@openai-primary-runtime"]
+enabled = true
+
+[plugins."presentations@openai-primary-runtime"]
+enabled = true