chore: release signage 0.1.2

0.1.2 fixes what the first production Signage deployment found:
- #4: the display and server share one message schema; every heartbeat
  from an image slide used to be refused with a 400;
- #5: every display request retries with backoff and never gives up, so
  a display that failed one request no longer stays offline until
  reloaded;
- #6: one object URL per cached slide, released when done; the leak
  exhausted the browser within minutes;
- CI (#7, #8): every change runs inside a pinned Ekklesia, end to end
  in a real browser, and cleans up even when killed.

compatibility.platform stays ^0.1.0: every fix is module-side, and CI
tested it against platform v0.1.1 plus test-only scripts. The README no
longer says Signage is unreleased or undeployed.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/display/index.tsx

@@ -59,7 +59,7 @@ function SignageDisplay({ context }: { readonly context: ModuleUiHostContext }):
  */
 export default defineModuleUi({
   id: "signage",
-  version: "0.1.1",
+  version: "0.1.2",
   styles: displayStyles,
   mount(container, context) {
     const root = createRoot(container);

src/server/runtime.ts

@@ -127,7 +127,7 @@ export function createSignageModuleRuntime(
 
   const definition = defineModuleRuntime({
     id: "signage",
-    version: "0.1.1",
+    version: "0.1.2",
 
     register({ capabilities, config, http, realtime }) {
       const settings = readSignageSettings(config);
@@ -189,7 +189,7 @@ export function createSignageModuleRuntime(
           // server enforces — a UI believing a stale limit would offer an upload the server refuses.
           return Response.json({
             crossfadeMs: current.crossfadeMs,
-            moduleVersion: "0.1.1",
+            moduleVersion: "0.1.2",
             nativeImageDurationMs: current.nativeImageDurationMs,
             nativePresentation: current.nativePresentation,
             rendererInputVersion: SIGNAGE_SLIDE_RENDERER_INPUT_VERSION,

src/ui/index.tsx

@@ -15,7 +15,7 @@ import ownStyles from "./styles.css";
  */
 export default defineModuleUi({
 	id: "signage",
-	version: "0.1.1",
+	version: "0.1.2",
 	styles: `${EKKLESIA_UI_STYLESHEET}\n${ownStyles}`,
 	mount(container, context) {
 		const root = createRoot(container);