v0.7.8 — the setup screen was unreachable for anyone who had ever played

Third report of the same symptom, this time with the build confirmed
current on screen, which ruled out v0.7.7's caching fault and left the
real cause exposed.

v0.7.5 skipped the setup screen whenever load() found a save, reasoned
as "a saved game is a game to resume". A browser that has ever played
solitaire always has one, so the door could never reach the screen
again — and the fresh private window that appeared to vindicate v0.7.7
simply had no save. Two real faults were stacked; the caching one is
fixed and had been masking this.

The door outranks a saved game now: ?solitaire is a request to set one
up, while a bare reload still resumes (pinned by its own test). Since
Deal clears the save, the screen carries #ss-resume and says what Deal
costs, so the door cannot destroy a game in progress.

Also, per Jesse, riding along rather than taking its own release: the
splash footer now names both ways to play.

868 tests pass, four new. The reproduction was a failing test written
before the fix.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AdG46Ja2PEDBkpqiDazMoX

package.json

@@ -1,6 +1,6 @@
 {
   "name": "station-master",
-  "version": "0.7.7",
+  "version": "0.7.8",
   "private": true,
   "type": "module",
   "description": "Station Master — a railroad operations game",