fix(gating): ignore repo CLAUDE.md/AGENTS.md; builtin age; add auto-Niri autostart

.chezmoi.toml.tmpl

@@ -9,6 +9,7 @@ encryption = "age"
 [age]
     identity = "~/.config/chezmoi/key.txt"
     recipient = "age19tdqgavaekhvgqsd75n8a09vvshen2ykzy8kw6tenczz73449anqc3l7a6"
+    useBuiltin = true
 
 [data]
     name = {{ $name | quote }}