AGENTS.md: fix nix develop syntax to --command

Author: stfl

AGENTS.md

@@ -4,34 +4,34 @@ This file provides guidance to Coding agents like Claude Code when working with
 
 ## Commands
 
-All commands must be run inside the Nix dev shell via `nix develop -- <cmd>`,
+All commands must be run inside the Nix dev shell via `nix develop --command <cmd>`,
 which provides `eask`, `just`, and `emacs` on PATH. This is also required for
 `git commit` since the pre-commit hooks invoke `eask`.
 
 ```sh
 # Byte-compile the package
-nix develop -- just compile
+nix develop --command just compile
 
 # Run the full ERT test suite
-nix develop -- just test
+nix develop --command just test
 
 # Run both (default)
-nix develop -- just
+nix develop --command just
 
 # Run a subset of tests by name prefix
-nix develop -- emacs -batch -Q -L . \
+nix develop --command emacs -batch -Q -L . \
   -l orgzly-formatter.el \
   -l orgzly-formatter-test.el \
   --eval '(ert-run-tests-batch "ozfmt/regression")'
 
 # Lint with package-lint
-nix develop -- just lint
+nix develop --command just lint
 
 # Clean byte-compiled output
-nix develop -- just clean
+nix develop --command just clean
 
 # Commit (pre-commit hooks require eask)
-nix develop -- git commit
+nix develop --command git commit
 ```
 
 ## Architecture