diff --git a/build_files/hypercube/99-tests.sh b/build_files/hypercube/99-tests.sh
index 7ad8c11..df5dd7c 100755
--- a/build_files/hypercube/99-tests.sh
+++ b/build_files/hypercube/99-tests.sh
@@ -47,6 +47,7 @@ REQUIRED_FILES=(
   "/etc/greetd/config.toml"
   # Config files
   "/etc/fish/config.fish"
+  "/etc/profile.d/hypercube-path.sh"
   "/usr/share/hypercube/config/starship/starship.toml"
   # Theming
   "/usr/share/themes/Tokyonight-Dark/gtk-3.0/gtk.css"
diff --git a/system_files/shared/etc/profile.d/hypercube-path.sh b/system_files/shared/etc/profile.d/hypercube-path.sh
new file mode 100644
index 0000000..b9ed7a2
--- /dev/null
+++ b/system_files/shared/etc/profile.d/hypercube-path.sh
@@ -0,0 +1,55 @@
+# Hypercube bash/sh PATH setup
+#
+# Fish is the default Hypercube shell. When bash (or another POSIX shell) is
+# launched without inheriting a full PATH, it can come up missing the standard
+# system directories — /usr/bin, /bin, /usr/sbin, /sbin, etc. That is where
+# system tools like podman live (/usr/bin/podman), so the ai-dev `claude`/`agy`
+# wrapper scripts in ~/.local/bin failed: they exec `podman`, which was not
+# resolvable on a stripped-down bash PATH.
+#
+# This file guarantees the default system directories are on PATH for sh/bash,
+# and also mirrors the user PATH additions from /etc/fish/config.fish so both
+# shells resolve the same locations. It is sourced by login shells via
+# /etc/profile and by interactive non-login shells via /etc/bashrc (Fedora
+# sources /etc/profile.d/* in both cases).
+
+# Append a directory to PATH only if it isn't already present (used for the
+# system dirs, which must always exist regardless of inheritance).
+__hypercube_append_path() {
+    case ":${PATH}:" in
+        *":$1:"*) ;;
+        *) PATH="${PATH:+$PATH:}$1" ;;
+    esac
+}
+
+# Prepend a directory to PATH only if it exists and isn't already present
+# (used for the per-user dirs, which may not exist yet).
+__hypercube_prepend_path() {
+    case ":${PATH}:" in
+        *":$1:"*) ;;
+        *) [ -d "$1" ] && PATH="$1:${PATH}" ;;
+    esac
+}
+
+# Default system directories. Guaranteed present even if PATH was inherited
+# empty or minimal (e.g. a non-interactive shell spawned from a service or GUI).
+__hypercube_append_path "/usr/local/sbin"
+__hypercube_append_path "/usr/local/bin"
+__hypercube_append_path "/usr/sbin"
+__hypercube_append_path "/usr/bin"
+__hypercube_append_path "/sbin"
+__hypercube_append_path "/bin"
+
+# Per-user directories, mirroring dot_files/fish/config.fish.
+__hypercube_prepend_path "$HOME/go/bin"
+__hypercube_prepend_path "$HOME/.cargo/bin"
+__hypercube_prepend_path "$HOME/.npm-packages/bin"
+__hypercube_prepend_path "$HOME/.local/bin"
+
+export PATH
+
+# Pick up cargo's environment (extra PATH/vars) when rustup is installed,
+# matching dot_files/fish/conf.d/rustup.fish.
+[ -f "$HOME/.cargo/env" ] && . "$HOME/.cargo/env"
+
+unset -f __hypercube_append_path __hypercube_prepend_path