feat: Refactor work item management and documentation for clarity and structure

ai/work-items/pdiap-15838.md

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+# PDIAP-15838 - Remove Apollo for iOS
+
+## Status
+
+- Approved
+- Next story to work on
+- Sized at `8` points
+
+---
+
+## Context
+
+- This ticket covers the REST migration cleanup on iOS.
+- The approved title is `Remove Apollo for iOS`.
+
+---
+
+## Approved Scope
+
+- Remove Apollo from iOS.
+- Remove GraphQL-specific networking code.
+- Remove related tests and mocks.
+- Remove transport feature flags so REST remains.
+
+---
+
+## Current Guidance
+
+- Do not frame this ticket as directly tied to the UIKit-removal spike.
+- Do not imply it is dependent on or part of dismissal-sequencing work.
+- Keep the migration framing explicit: REST remains behind a feature flag until otherwise confirmed, and GraphQL fallback context still matters when describing the overall migration.
+
+---
+
+## Sequencing
+
+- This is the next story to work on before `PDIAP-15836`.