Fix 01-repos.sh to fail on distro-sync errors and update devcontainer to fedora:latest

Author: Gemini CLI

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:41
+FROM fedora:latest
 
 # 1. Install MiOS Toolchain + System Components (FHS & Build Stack)
 RUN dnf install -y     just     podman     podman-compose     buildah     skopeo     bootc     bootupd     ostree     rpm-ostree     jq     yq     rsync     git     nodejs     npm     sudo     zsh     findutils     grep     sed     gawk     policycoreutils     util-linux     authselect     openssl     qemu-img     attr     diffutils     && dnf clean all

automation/01-repos.sh

@@ -80,8 +80,8 @@ $DNF_BIN "${DNF_SETOPT[@]}" upgrade -y --allowerasing --best \
 echo "[01-repos] Phase 2: Distro-upgrade and userspace alignment..."
 # We use 'upgrade --refresh' to ensure we have fresh metadata and catch latest
 # userspace patches, followed by 'distro-sync' to align the remainder with F44.
-$DNF_BIN "${DNF_SETOPT[@]}" --setopt=excludepkgs="shim-*,kernel*" upgrade --refresh -y || true
-$DNF_BIN "${DNF_SETOPT[@]}" --setopt=excludepkgs="shim-*,kernel*" distro-sync -y --best --allowerasing || {
+$DNF_BIN "${DNF_SETOPT[@]}" --setopt=excludepkgs="shim-*,kernel*" upgrade --refresh -y
+$DNF_BIN "${DNF_SETOPT[@]}" --setopt=excludepkgs="shim-*,kernel*" distro-sync -y --best --allowerasing || { echo "FATAL: distro-sync failed"; exit 1; }
     echo "[01-repos] WARNING: Distro-sync to Fedora 44 failed. Repository might be unreachable."
     echo "[01-repos] Continuing with base image packages..."
 }