feat: install script re-org

install.d/00-os.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   Print operating system information and hint which installer path will run.
+#
+
+log_info "Environment: DOTS_OS=$DOTS_OS, DOTS_PKG=$DOTS_PKG, DOTS_ENV=$DOTS_ENV"
+
+if [[ "$DOTS_OS" == "macos" ]]; then
+    sw_vers
+elif [[ "$DOTS_OS" == "linux" ]]; then
+    if [[ -r /etc/os-release ]]; then
+        cat /etc/os-release
+    fi
+    
+    if [[ -z "$DOTS_PKG" ]]; then
+        log_warn "No known package manager found on Linux"
+    fi
+else
+    log_error "Unknown OS: $DOTS_OS"
+fi
+
+if [[ "$DOTS_ENV" == "codespaces" ]]; then
+    log_info "Running in GitHub Codespaces"
+fi
+
+log_pass "OS detection complete"