feat: Add iOS and Swift context files and guidelines for answering programming questions

ai/context/index.md

@@ -21,6 +21,14 @@ Stable context about core product components and how they relate:
 - [systems/xflowviewmaker.md](./systems/xflowviewmaker.md)
 - [systems/ftframeworks.md](./systems/ftframeworks.md)
 
+### `ios/`
+
+Swift and iOS best-practice context for programming questions:
+
+- [ios/index.md](./ios/index.md)
+- [ios/current-practices.md](./ios/current-practices.md)
+- [ios/project-swift-guidance.md](./ios/project-swift-guidance.md)
+
 ### `workstreams/`
 
 Durable context about recurring streams of work and investigation:
@@ -56,5 +64,6 @@ Confirmed technical or product decisions with ongoing impact.
 
 - Load `project.md` and this index first.
 - Open `systems/` when the question is about architecture, ownership, or integration.
+- Open `ios/` when the question is about Swift, SwiftUI, iOS architecture, testing, concurrency, or debugging.
 - Open `workstreams/` when the question is about current priorities, debugging themes, or historical project patterns.
 - Open `process/` when drafting messages, standups, Jira notes, or deciding how to update memory.