Registry-only stores, a quieter window, and a CI that builds

A store no longer needs a repository of its own. The engine's built-in defaults
already cover the host-to-asset mapping, the install modes, the platforms and the
behaviour; what they cannot know is identity — a slug, a name and a catalog URL — and
that is exactly what a registry record carries. So `storeRepositoryUrl` is optional: a
record with a name and a catalog is a complete store, the id falls back from the
repository name to the catalog host (`teletypegames.org` becomes `teletypegames`) to the
display name, and the client writes a three-section config. Given a repository it still
reads it, and that file stays the authority on how the store behaves; a repository
without a config.json is treated as no repository at all.

Measured end to end against a local registry serving one record with a null repository:
the engine and the core downloaded, engine 1.1.0 accepted the written config, it listed
the same ten titles the configured store does, and a hosted title synced into a sandbox
with its menu entry written.

The "Install all" button is gone, and with it the string it used. Titles are installed
one at a time from their own cards.

No footer. The window carried a bar at the bottom at all times — a toggle and a line of
absolute paths — for something most sessions never need. The log is still there, folder
buttons included, behind a quiet switch at the bottom of the side menu; it takes no room
until it is opened, and an arriving line does not open it, because the store logs on
every refresh and a window that unfolds panels by itself is worse than one that keeps
quiet.

Three faults that every automated count had passed, found by photographing the setup
screen: the store badge rendered as an empty pill with no store open; the gate's picker
showed as an empty dropdown stub, because an explicit `display` beats the browser's own
`[hidden]` rule; and the gate went up while the empty-catalog line stayed on screen
underneath it. The last was a design fault — whether the gate is up was a call on a
view rather than state, so the two could disagree. The setup screen is now a field in
the state store, and that one field decides which of the gate and the grid is drawn.
The window test's gate assertion was wrong too: it demanded a store picker, which only
appears when the registry offers more than one store, so one store — the ordinary case —
failed it.

CI builds the packages this machine cannot. `.woodpecker.yaml` runs the checks on every
push and, on a tag or by hand, builds the Linux packages in
`electronuserland/builder:22` and the Windows ones in `:22-wine`, then attaches them to
the release with scripts/ci-upload.sh. The pipeline lives here rather than in the update
server's `/build/config` extension, which serves game-platform pipelines publishing into
the site's catalog — a different product with a different target. macOS stays a local
build: Apple's toolchain and its signing exist only on a Mac.

Both build steps verify what they produced, because a half-finished Wine build leaves a
162 KB stub named like the real installer and `ls` is happy with it. The Linux step was
rehearsed locally in the same image (AppImage 128 MB, deb 100 MB); the Wine step cannot
be rehearsed on Apple Silicon, where 16 KB host pages break Wine's 4 KB assumption, so
the runner is where it is proven. The size check was tested against both outcomes.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/main/ipc/IpcArguments.ts

@@ -27,14 +27,16 @@ export function requireStringArray (value: unknown, name: string): readonly stri
 export function requireRegistryStore (value: unknown): RegistryStoreDto {
   const record = asRecord(value)
   if (record === null) throw new TypeError('a store record is required')
+  const repository = readString(record, 'storeRepositoryUrl')
   const store: RegistryStoreDto = {
     name: readString(record, 'name'),
     catalogUrl: readString(record, 'catalogUrl'),
-    storeRepositoryUrl: readString(record, 'storeRepositoryUrl'),
+    // Optional: a store with no repository installs on the engine's defaults.
+    storeRepositoryUrl: repository.length > 0 ? repository : null,
     storeId: readString(record, 'storeId')
   }
-  if (store.name.length === 0 || store.catalogUrl.length === 0 || store.storeRepositoryUrl.length === 0) {
-    throw new TypeError('a store record needs a name, a catalog URL and a repository URL')
+  if (store.name.length === 0 || store.catalogUrl.length === 0) {
+    throw new TypeError('a store record needs a name and a catalog URL')
   }
   return store
 }