[codex] Structure native view resolution failures - #3353

Reviewed the changed TypeScript in scope:

• apps/mobile/src/native/nativeViewResolutionError.ts (new)
• apps/mobile/src/features/diffs/nativeReviewDiffSurface.ts
• apps/mobile/src/features/terminal/nativeTerminalModule.ts
• associated *.test.ts files

The new NativeViewResolutionError conforms to the conventions:

• Imports the Effect schema module as a namespace via import * as Schema from "effect/Schema", with no consolidated named imports from "effect".
• Modeled with Schema.TaggedErrorClass and a semantically precise tag (NativeViewResolutionError).
• Carries stable structural context (nativeModuleName) identifying the resource at the wrapping site, and preserves the immediate underlying failure as a required cause (Schema.Defect()). Since every construction wraps a real failure, requiring cause is appropriate.
• message is derived exclusively from the structural attribute (nativeModuleName) and does not stringify or depend on cause.
• No redundant singleton discriminator (operation/reason/kind/phase) is introduced alongside the precise tag.

The two consumer modules construct the error correctly at their respective resolution sites, preserving the caught error as cause. No convention violations were introduced or retained in the changed scope.

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Agent Credits: 25 credits