fix(settings): About tab crash + update-row UI (#889)

- AppUpdateViewModel has no (Application) ctor; the default viewModel()
  factory's AndroidViewModelFactory does getConstructor(Application)
  -> NoSuchMethodException -> crash on opening About. Build it with an
  explicit viewModel { } initializer + APPLICATION_KEY instead.
- Add instrumented regression test that renders SettingsAboutPage with
  the real default factory (the exact path that crashed).
- UpdateRow: status text and action button no longer fight for one line;
  Update now / Open settings / Retry get a full-width button of their
  own below the row, Downloading gets a full-width progress bar.
- Strip the leading 'v' from GitHub release tags before formatting
  (templates already prepend 'v' -> was rendering 'vv1.21.1').

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/androidTest/java/com/m57/hermescontrol/ui/settings/SettingsAboutPageTest.kt

@@ -0,0 +1,34 @@
+package com.m57.hermescontrol.ui.settings
+
+import androidx.compose.ui.test.assertIsDisplayed
+import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.MediumTest
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/**
+ * Regression net for the About-tab crash (issue: opening About threw
+ * NoSuchMethodException AppUpdateViewModel.<init>(Application) — the default
+ * AndroidViewModelFactory resolves ctors via reflection, which cannot see the
+ * Kotlin default-arg synthetic constructor). The test deliberately does NOT
+ * inject a view model: the default `viewModel { ... }` factory lambda must
+ * build the real [AppUpdateViewModel] without crashing.
+ */
+@RunWith(AndroidJUnit4::class)
+@MediumTest
+class SettingsAboutPageTest {
+    @get:Rule
+    val composeTestRule = createComposeRule()
+
+    @Test
+    fun aboutPage_opensWithoutCrashing() {
+        composeTestRule.setContent {
+            SettingsAboutPage(onBack = {})
+        }
+
+        composeTestRule.onNodeWithText("About").assertIsDisplayed()
+    }
+}