chore: update agent harness and config

AGENTS.md

@@ -10,10 +10,6 @@ Custom packages live in `packages/` and are exported via `packages/default.nix`.
 
 Use `nix develop` to enter the project shell with `git`, `nixfmt`, and SOPS ready. Run `nix fmt` before committing to format all Nix sources. `XDG_CACHE_HOME=$PWD/.cache nix flake check` validates every host without polluting the global cache. For macOS changes, run `darwin-rebuild --dry-run --flake .#macbook-pro` and follow with `darwin-rebuild switch --flake .#macbook-pro`. Validate the Linux VM closure via `nix build .#nixosConfigurations.dev-vm.config.system.build.toplevel`.
 
-## AI Agent Workflow with Beads
-
-Beads provides persistent memory for AI coding agents through git-backed issue tracking. Enter the AI agent shell with `nix develop .#ai-agent` to access Beads (`bd`) and helper tools. Initialize in any git repository with `bd-init` (Nushell) or `bd init`. Create tasks via `bd create --title "Task name" --type feature --priority high`, track dependencies with `--blocks <id>` or `--parent <id>`, and query ready work using `bd-ready` or `bd ready --json`. The `.beads/issues.jsonl` file must be committed to git to preserve context across sessions. Claude Code can directly use `bd` commands via the Bash tool to maintain work continuity between conversations. Sync the SQLite cache after git operations with `bd-sync` or `bd sync`.
-
 ## Coding Style & Naming Conventions
 
 Indent with two spaces and keep trailing commas in attribute sets. Prefer lower-kebab filenames (e.g. `package/nushell.nix`), and expose custom options under the `rsydn.*` namespace. Format Nix with `nix fmt`; avoid ad-hoc host tweaks when a shared module fits.

flake.lock

@@ -12,11 +12,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1771437256,
-        "narHash": "sha256-bLqwib+rtyBRRVBWhMuBXPCL/OThfokA+j6+uH7jDGU=",
+        "lastModified": 1776249299,
+        "narHash": "sha256-Dt9t1TGRmJFc0xVYhttNBD6QsAgHOHCArqGa0AyjrJY=",
         "owner": "numtide",
         "repo": "blueprint",
-        "rev": "06ee7190dc2620ea98af9eb225aa9627b68b0e33",
+        "rev": "56131e8628f173d24a27f6d27c0215eff57e40dd",
         "type": "github"
       },
       "original": {
@@ -68,15 +68,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1770895533,
-        "narHash": "sha256-v3QaK9ugy9bN9RXDnjw0i2OifKmz2NnKM82agtqm/UY=",
+        "lastModified": 1777322186,
+        "narHash": "sha256-CFlRnym0RphrTymMUg7PfQgfdYdMd6BnMZQJhlwv0fI=",
         "owner": "nix-community",
         "repo": "bun2nix",
-        "rev": "c843f477b15f51151f8c6bcc886954699440a6e1",
+        "rev": "8985e47786dd0bfa95b7c795f12aeafadd328eb8",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
+        "ref": "staging-2.1.0",
         "repo": "bun2nix",
         "type": "github"
       }
@@ -220,11 +221,11 @@
     },
     "import-tree": {
       "locked": {
-        "lastModified": 1763762820,
-        "narHash": "sha256-ZvYKbFib3AEwiNMLsejb/CWs/OL/srFQ8AogkebEPF0=",
+        "lastModified": 1773693634,
+        "narHash": "sha256-BtZ2dtkBdSUnFPPFc+n0kcMbgaTxzFNPv2iaO326Ffg=",
         "owner": "vic",
         "repo": "import-tree",
-        "rev": "3c23749d8013ec6daa1d7255057590e9ca726646",
+        "rev": "c41e7d58045f9057880b0d85e1152d6a4430dbf1",
         "type": "github"
       },
       "original": {
@@ -265,11 +266,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1776137484,
-        "narHash": "sha256-3gUwNO4y8ZmTyQBb3fCrLNRnqzAuuwNNSlPjmhrGnMo=",
+        "lastModified": 1777354680,
+        "narHash": "sha256-jtMZ7U79JYGoE8NYIu8Y4bNr+EoQW5i6zMP6Mig7tCU=",
         "owner": "numtide",
         "repo": "llm-agents.nix",
-        "rev": "e70ca11dc1a327e99c58dcd580ed209056a61130",
+        "rev": "efa749415e2ee5015db3fda1d3d6d7484d8aa64c",
         "type": "github"
       },
       "original": {
@@ -371,11 +372,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1775888245,
-        "narHash": "sha256-nwASzrRDD1JBEu/o8ekKYEXm/oJW6EMCzCRdrwcLe90=",
+        "lastModified": 1776949667,
+        "narHash": "sha256-GMSVw35Q+294GlrTUKlx087E31z7KurReQ1YHSKp5iw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "13043924aaa7375ce482ebe2494338e058282925",
+        "rev": "01fbdeef22b76df85ea168fbfe1bfd9e63681b30",
         "type": "github"
       },
       "original": {

modules/darwin/home/programs/aerospace/user-settings.nix

@@ -26,9 +26,11 @@
   exec-on-workspace-change = [ "flatten-workspace-tree" ];
 
   on-window-detected = [
-    # Default: force all windows to tile
+    # Codex /pet opens an auxiliary window that should not enter the tiling tree.
     {
-      run = "layout tiling";
+      "if".app-id = "com.openai.codex";
+      "if".window-title-regex-substring = "pet|hatch";
+      run = "layout floating";
     }
     # Exception: Kitty on workspace 5 floats
     {

modules/darwin/homebrew.nix

@@ -36,7 +36,6 @@ in
         "spotify"
         "vesktop"
         "obs"
-        "neohtop"
         "orbstack"
         "openvpn-connect"
       ];