Drop the packages Fedora 44 stopped shipping, and never let a migration wait for a prompt

Two more things the Framework's install surfaced.

gstreamer1-plugin-fmp4 and gstreamer1-plugin-mp4 no longer exist in any repo
this configuration enables — not Fedora 44, not RPM Fusion, not the Hyprland
COPR. Machines installed on older Fedora carry them as orphans, which is why
the list looked fine from one. dnf5 refuses a whole transaction over one
missing name, and desktop-packages runs above the Hyprland block, so two dead
codec entries cost the entire desktop.

The solopasha migration preferred panama-sudo, and pkexec with no polkit agent
to answer it does not fail — it waits forever, which held an unattended
./install hostage at the one stage that promised never to ask. The stated
reason is now reserved for a terminal someone is sitting at; a non-interactive
run takes plain sudo, which either succeeds quietly or fails fast enough for
panama-migrate to retry at the next login, as it promises.

Verified by running install-packages end to end on the machine that broke it:
Terra guard holds, desktop packages resolve, Hyprland 0.56.2 lands, and the
stage reaches its stepped-over report. All 22 setup contracts pass.

Claude-Session: https://claude.ai/code/session_01Epx9ZC1gwm81K3jm9x9CKh

migrations/1787672400.sh

@@ -30,12 +30,20 @@ if grep -qE '^\s*enabled\s*=\s*1' "$repo_file"; then
 fi
 
 PANAMA_PATH="${PANAMA_PATH:-$HOME/.local/share/Panama}"
+# panama-sudo is pkexec, and pkexec with nobody to answer it does not fail --
+# it waits forever. That hung an unattended ./install at this very migration.
+# So the stated-reason prompt is reserved for a terminal someone is sitting at;
+# a non-interactive run takes plain sudo, which is either already authorized
+# (a warm timestamp, NOPASSWD) or fails fast enough to be retried at the next
+# login, exactly as panama-migrate promises.
 sudo_cmd=(sudo)
-[[ -x "$PANAMA_PATH/bin/panama-sudo" ]] && sudo_cmd=(
-    "$PANAMA_PATH/bin/panama-sudo" --reason
-    "Removing the unused solopasha/hyprland repository, which conflicts with the one Panama installs from"
-    --
-)
+if [[ -t 0 && -x "$PANAMA_PATH/bin/panama-sudo" ]]; then
+    sudo_cmd=(
+        "$PANAMA_PATH/bin/panama-sudo" --reason
+        "Removing the unused solopasha/hyprland repository, which conflicts with the one Panama installs from"
+        --
+    )
+fi
 
 "${sudo_cmd[@]}" rm -f "$repo_file"
 echo "Removed the disabled solopasha/hyprland COPR; Hyprland comes from lionheartp/Hyprland."