chore(home): drop mutableFiles machinery

The aoe config was the last tracked file, and it drifts the same way
settings.json did. With no consumers left, the module, its repo-path option
and the tracked aoe-config.toml go too.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

home/common/features/mutable-file.nix

@@ -1,105 +0,0 @@
-{
-  config,
-  lib,
-  pkgs,
-  self,
-  ...
-}:
-let
-  cfg = config.home.mutableFiles;
-  repoPath = config.home.mutableFilesRepoPath;
-  flakePrefix = self.outPath;
-
-  fileEntries = lib.attrsToList cfg;
-
-  toRepoPath = storePath: repoPath + lib.removePrefix flakePrefix (toString storePath);
-
-  checkScript = lib.concatMapStringsSep "\n" (
-    { name, value }:
-    let
-      target = "${config.home.homeDirectory}/${name}";
-      storePath = value.source;
-      # toRepoPath only works for sources that live in the flake tree. A
-      # generated source is not under flakePrefix, so removePrefix is a no-op
-      # and the hint would print a /nix/store path to copy back onto.
-      originalPath =
-        if value.upstreamPath != null then "${repoPath}/${value.upstreamPath}" else toRepoPath value.source;
-    in
-    ''
-      if [ -f "${target}" ] && ! ${lib.getExe' pkgs.diffutils "diff"} -q "${storePath}" "${target}" > /dev/null 2>&1; then
-        echo ""
-        echo "!! mutable file changed: ${name}"
-        echo "   To bring changes upstream:"
-        echo "   cp ${target} ${originalPath}"
-        echo ""
-        ${lib.getExe' pkgs.diffutils "diff"} -u "${storePath}" "${target}" || true
-        _mutable_changed=1
-      fi
-    ''
-  ) fileEntries;
-
-  copyScript = lib.concatMapStringsSep "\n" (
-    { name, value }:
-    let
-      target = "${config.home.homeDirectory}/${name}";
-      inherit (value) source;
-      dirName = builtins.dirOf target;
-    in
-    ''
-      mkdir -p "${dirName}"
-      cp -f "${source}" "${target}"
-      chmod ${if value.executable then "755" else "644"} "${target}"
-    ''
-  ) fileEntries;
-in
-{
-  options.home.mutableFilesRepoPath = lib.mkOption {
-    type = lib.types.str;
-    description = "Absolute path to the nixos-config repo on disk.";
-  };
-
-  options.home.mutableFiles = lib.mkOption {
-    type = lib.types.attrsOf (
-      lib.types.submodule {
-        options = {
-          source = lib.mkOption {
-            type = lib.types.path;
-            description = "Path to the source file.";
-          };
-          executable = lib.mkOption {
-            type = lib.types.bool;
-            default = false;
-            description = "Whether the file should be executable.";
-          };
-
-          upstreamPath = lib.mkOption {
-            type = lib.types.nullOr lib.types.str;
-            default = null;
-            example = "home/yolo/aoe-config.toml";
-            description = ''
-              Repo-relative file to name in the "bring changes upstream" hint.
-              Required when `source` is generated rather than a file in the
-              flake tree, since the store path cannot be mapped back.
-            '';
-          };
-        };
-      }
-    );
-    default = { };
-    description = "Files to copy (not symlink) into the home directory, with change detection.";
-  };
-
-  config = lib.mkIf (cfg != { }) {
-    home.activation.mutableFiles = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-      _mutable_changed=0
-      ${checkScript}
-      if [ "$_mutable_changed" -eq 1 ]; then
-        echo ""
-        echo "!! Aborting: mutable files have been modified outside of nix."
-        echo "   Bring the changes upstream first, then re-run."
-        exit 1
-      fi
-      ${copyScript}
-    '';
-  };
-}

home/common/programs/default.nix

@@ -5,7 +5,6 @@
 }:
 {
   imports = [
-    ../features/mutable-file.nix
     ./zsh.nix
     ./nix.nix
     ./neovim
@@ -28,10 +27,6 @@
   };
 
   home = {
-    # mkDefault: hosts whose clone lives elsewhere (yolo, under ~/tea) override
-    # this with a plain assignment.
-    mutableFilesRepoPath = lib.mkDefault "${config.home.homeDirectory}/projects/nixos-config";
-
     username = lib.mkDefault "naps62";
     homeDirectory = lib.mkDefault "/home/${config.home.username}";
     stateVersion = lib.mkDefault "24.05";

home/yolo/aoe-config.toml

@@ -1,91 +0,0 @@
-default_profile = "default"
-
-[acp]
-allow_agent_install = false
-allowed_agents = []
-auto_stop_idle_secs = 0
-compaction_reminder = false
-compaction_reminder_percent = 75
-default_agent = "claude"
-max_concurrent_workers = 5
-node_path = ""
-offer_structured_in_new_session = true
-rate_limit_auto_resume = false
-replay_events = 0
-restrict_agents = false
-show_tool_durations = true
-silent_orphan_grace_secs = 120
-
-[hooks]
-
-[host_hooks]
-
-[logging]
-default_level = "info"
-file_path = "debug.log"
-keep_count = 5
-max_size_mib = 50
-output = "file"
-rotation = "size"
-show_spans = false
-
-[logging.targets]
-
-[session]
-agent_status_hooks = true
-auto_resume_on_restart = true
-auto_stop_idle_secs = 0
-click_action = "live_send"
-confirm_before_quit = false
-confirm_delete = true
-default_attach_mode = "tmux"
-delete_to_trash = false
-favorites_first = true
-inherit_host_environment = false
-live_send_exit_chord = "C-q"
-live_send_leader = "C-b"
-live_send_on_view_switch = false
-merge_hooks_into_selected_agent = true
-mouse_capture = true
-opencode_preassign_session_id = false
-prevent_sleep_idle_grace_minutes = 15
-prevent_sleep_when_active = false
-restart_wake_message = "wake up: pick up what you were doing"
-row_tag = "none"
-show_session_colors = true
-smart_rename = true
-smart_rename_agent = ""
-strict_hotkeys = false
-tie_workdir_to_name = true
-trash_retention_days = 30
-unread_indicator = true
-yolo_mode_default = true
-
-[session.agent_detect_as]
-synclaude = "claude"
-
-[session.custom_agents]
-synclaude = "synclaude"
-
-[status_hooks]
-enabled = false
-
-[theme]
-color_mode = "truecolor"
-idle_decay_minutes = 0
-name = "zinc"
-
-[tmux]
-clipboard = "auto"
-mouse = "auto"
-status_bar = "auto"
-vt_live = true
-
-[worktree]
-auto_cleanup = true
-bare_repo_path_template = "./{branch}"
-delete_branch_on_cleanup = false
-enabled = true
-init_submodules = true
-path_template = "../{repo-name}-worktrees/{branch}"
-workspace_path_template = "../{branch}-workspace-{session-id}"

home/yolo/default.nix

@@ -28,8 +28,8 @@ in
     ./ssh.nix
   ];
 
-  # Host-local, like the aoe config below: bash goes from "ask" to
-  # "allow" so unattended opencode sessions stop stalling on every git and grep.
+  # Host-local: bash goes from "ask" to "allow" so unattended opencode sessions
+  # stop stalling on every git and grep.
   # It also drops the prompt on branches under review, which is the tradeoff.
   xdg.configFile."opencode/opencode.json".source = lib.mkForce mergedOpencodeConfig;
 
@@ -44,22 +44,9 @@ in
     light = "Bibata-Modern-Amber";
   };
 
-  home = {
   # Headless browser driver the agent tooling shells out to. Was a global npm
   # install on the ubuntu box.
-    packages = [ pkgs.agent-browser ];
-
-    # Both default to ~/projects/nixos-config in common/programs; this clone
-    # lives under ~/tea. nh.flake sets NH_FLAKE, so without it `nh home switch`
-    # with no argument resolves to a path that does not exist.
-    mutableFilesRepoPath = "/home/naps62/tea/nixos-config";
-
-    mutableFiles = {
-      # Host-local, not shared: this sets yolo_mode_default = true, which starts
-      # aoe sessions with permission checks skipped. Only correct on this box.
-      ".config/agent-of-empires/config.toml".source = ./aoe-config.toml;
-    };
-  };
+  home.packages = [ pkgs.agent-browser ];
 
   # This is the one box that runs the agent-skills units; each starts a session,
   # so a second machine enabling them would run the same job twice.