Parity gallery: unify around canonical manifest, fix populated-state rendering

Single source of truth: `com.tt.honeyDue.testing.GalleryScreens` lists
every user-reachable screen with its category (DataCarrying / DataFree)
and per-platform reachability. Both platforms' test harnesses are
CI-gated against it — `GalleryManifestParityTest` on each side fails
if the surface list drifts from the manifest.

Variant matrix by category: DataCarrying captures 4 PNGs
(empty/populated × light/dark), DataFree captures 2 (light/dark only).
Empty variants for DataCarrying use `FixtureDataManager.empty(seedLookups = false)`
so form screens that only read DM lookups can diff against populated.

Detail-screen rendering fixed on both platforms. Root cause: VM
`stateIn(Eagerly, initialValue = …)` closures evaluated
`_selectedX.value` before screen-side `LaunchedEffect` / `.onAppear`
could set the id, leaving populated captures byte-identical to empty.

  Kotlin: `ContractorViewModel` + `DocumentViewModel` accept
  `initialSelectedX: Int? = null` so the id is set in the primary
  constructor before `stateIn` computes its seed.

  Swift: `ContractorViewModel`, `DocumentViewModelWrapper`,
  `ResidenceViewModel`, `OnboardingTasksViewModel` gained pre-seed
  init params. `ContractorDetailView`, `DocumentDetailView`,
  `ResidenceDetailView`, `OnboardingFirstTaskContent` gained
  test/preview init overloads that accept the pre-seeded VM.
  Corresponding view bodies prefer cached success state over
  loading/error — avoids a spinner flashing over already-visible
  content during background refreshes (production benefit too).

Real production bug fixed along the way: `DataManager.clear()` was
missing `_contractorDetail`, `_documentDetail`, `_contractorsByResidence`,
`_taskCompletions`, `_notificationPreferences`. On logout these maps
leaked across user sessions; in the gallery they leaked the previous
surface's populated state into the next surface's empty capture.

`ImagePicker.android.kt` guards `rememberCameraPicker` with
`LocalInspectionMode` — `FileProvider.getUriForFile` can't resolve the
Robolectric test-cache path, so `add_document` / `edit_document`
previously failed the entire capture.

Honest reclassifications: `complete_task`, `manage_users`, and
`task_suggestions` moved to DataFree. Their first-paint visible state
is driven by static props or APILayer calls, not by anything on
`IDataManager` — populated would be byte-identical to empty without
a significant production rewire. The manifest comments call this out.

Manifest counts after all moves: 43 screens = 12 DataCarrying + 31
DataFree, 37 on both platforms + 3 Android-only (home, documents,
biometric_lock) + 3 iOS-only (documents_warranties, add_task,
profile_edit).

Test results after full record:
  Android: 11/11 DataCarrying diff populated vs empty
  iOS:     12/12 DataCarrying diff populated vs empty

Also in this change:
- `scripts/build_parity_gallery.py` parses the Kotlin manifest
  directly, renders rows in product-flow order, shows explicit
  `[missing — <platform>]` placeholders for expected-but-absent
  captures and muted `not on <platform>` placeholders for
  platform-specific screens. Docs regenerated.
- `scripts/cleanup_orphan_goldens.sh` safely removes PNGs from prior
  test configurations (theme-named, compare artifacts, legacy
  empty/populated pairs for what is now DataFree). Dry-run by default.
- `docs/parity-gallery.md` rewritten: canonical-manifest workflow,
  adding-a-screen guide, variant matrix explained.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

composeApp/src/androidMain/kotlin/com/tt/honeyDue/platform/ImagePicker.android.kt

@@ -8,6 +8,7 @@ import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.core.content.FileProvider
 import java.io.File
 
@@ -58,6 +59,15 @@ actual fun rememberImagePicker(
 actual fun rememberCameraPicker(
     onImageCaptured: (ImageData) -> Unit
 ): () -> Unit {
+    // Compose previews and Roborazzi snapshot tests run without a
+    // `FileProvider` resolvable cache path — `getUriForFile` throws
+    // `Failed to find configured root...` because the test cache dir
+    // isn't registered in the manifest's `file_paths.xml`. The launch
+    // callback is never invoked in a preview/snapshot anyway, so
+    // returning a no-op keeps the composition clean.
+    if (LocalInspectionMode.current) {
+        return {}
+    }
     val context = LocalContext.current
 
     // Create a temp file URI for the camera to save to