feat(dev-env): aiolabs dev environment — options, lib, config, presets

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

modules/dev-env/default.nix

@@ -0,0 +1,17 @@
+# dev-env module entry point.
+#
+# This module declaratively manages a multi-project development environment
+# (bare repos, worktrees, navigation helpers, tmux sessions, regtest docker
+# env, upstream-PR workflow). It sits on top of omni and consumes the
+# unified deploy flake as a source of truth for deployed refs.
+#
+# The module only configures tools; it does not materialize repos on disk.
+# That is the job of the user-invoked `dev-env-bootstrap` script installed
+# by config.nix.
+{
+  imports = [
+    ./options.nix
+    ./lib.nix
+    ./config.nix
+  ];
+}