fix: apply the namespace edits dropped from the task 0031 merge

The task 0031 commit moved the module files but a mis-staged `git add`
left the option-path rewrites out, so main declared the old namespaces
(`modules.claude-code`, `modules.gitea-axi`, `modules.pi`,
`modules.desktop.hyprlock`/`hypridle`) while CONTEXT.md and ADR 0004
already documented the new ones. Rewrite the paths in the moved and
in-place modules, the neogaia host, and the two live CLAUDE.md gotchas
so the code matches the recorded convention.

modules/agents/tools/gitea-axi.nix

@@ -8,11 +8,11 @@
 # That module also declares the Claude Code context when that harness is
 # enabled on the host; enabling this alone installs the CLI and nothing else.
 let
-  cfg = config.modules.gitea-axi;
+  cfg = config.modules.agents.tools.gitea-axi;
   user = config.user.name;
 in
 {
-  options.modules.gitea-axi.enable =
+  options.modules.agents.tools.gitea-axi.enable =
     lib.mkEnableOption "gitea-axi, an agent-ergonomic CLI for Gitea issues and pull requests";
 
   config = lib.mkIf cfg.enable {