herdr: manage config.toml via chezmoi

Ignore herdr runtime state (session.json, logs, sockets, plugin lock).

.chezmoiignore.tmpl

@@ -17,3 +17,9 @@ README.md
 40-install-sway.sh
 40-install-sway-gentoo.sh
 {{ end }}
+
+# herdr runtime state — only config.toml is managed
+.config/herdr/session.json
+.config/herdr/*.log
+.config/herdr/.plugins.lock
+.config/herdr/*.sock

dot_config/herdr/config.toml

@@ -0,0 +1,10 @@
+[ui]
+status_indicators = "symbols"
+
+show_agent_labels_on_pane_borders = true
+[theme]
+name = "gruvbox"
+auto_switch = false
+
+[ui.toast]
+delivery = "system"