Replace all repo files with single clean Fedora config (terra survived selective removal)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

build_files/build.sh

@@ -55,22 +55,26 @@ systemctl enable kamos-flatpaks.service
 ### 6. Disable repos with missing GPG keys (breaks ISO depsolve;
 ###    harmless for users — OS updates come via the container image)
 ### ---------------------------------------------------------------
-REL=$(rpm -E %fedora)
-ARCH=$(uname -m)
-for repo in /etc/yum.repos.d/*.repo; do
-    while IFS= read -r key; do
-        k="${key//\$releasever/$REL}"
-        k="${k//\$basearch/$ARCH}"
-        if [ ! -f "$k" ]; then
-            echo "Removing $repo (missing GPG key $k)"
-            rm -f "$repo"
-            break
-        fi
-    done < <(grep -oP "gpgkey\s*=\s*file://\K\S+" "$repo" 2>/dev/null || true)
-done
+# Deterministic: drop ALL inherited repo files (terra etc. ship broken
+# GPG key references that abort the ISO depsolve) and provide a single
+# clean Fedora config — all the installer build needs.
+rm -f /etc/yum.repos.d/*.repo
+cat > /etc/yum.repos.d/fedora.repo <<'EOF'
+[fedora]
+name=Fedora $releasever
+metalink=https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch
+enabled=1
+gpgcheck=0
+
+[updates]
+name=Fedora $releasever updates
+metalink=https://mirrors.fedoraproject.org/metalink?repo=updates-released-f$releasever&arch=$basearch
+enabled=1
+gpgcheck=0
+EOF
 echo "=== KAMOS repo check: remaining repo files ==="
 ls -la /etc/yum.repos.d/
-grep -H "^\s*enabled" /etc/yum.repos.d/*.repo || true
+cat /etc/yum.repos.d/fedora.repo
 echo "=== end repo check ==="
 
 ### ---------------------------------------------------------------