Make the Rust client the sole app

docs/IRIS_TODO.md

@@ -16,16 +16,16 @@ Framework capabilities needed by `RUST.md`'s port plan:
 - [ ] **Expose the distance from a `LazySpan` viewport to its unloaded
   edge.** (**P1**.) `viewport_len` and the visible extents are already
   measured internally, but a paging caller cannot ask whether it is within
-  the Compose app's six-viewport `HISTORY_SCREENS` cushion. The API should
+  the product's six-viewport `HISTORY_SCREENS` cushion. The API should
   answer in pixels or viewport multiples, never rows: a row ranges from one
   line to a screen, so a fixed row count is not a distance.
 - [ ] **Let an image fit a bounded box while preserving its aspect ratio.**
   (**P1**.) `Image` currently always reports and draws the decoded texture's
   natural pixel size. Decoding and fetching a server-produced attachment
-  belong in `app-rust`; iris only owes the generic fit/scale widget used to
+  belong in `app`; iris only owes the generic fit/scale widget used to
   draw its thumbnail.
 - [ ] **Per-range backgrounds for rich text.** (**P1**.) Inline code is
-  already monospace and coloured, but matching Compose's chip also needs
+  already monospace and coloured, but the inline-code chip also needs
   the glyph run's boxes so a surface can be drawn behind exactly that byte
   range. The shared `TextSelection` engine already computes the same geometry
   for selection highlights; expose one shared primitive rather than giving
@@ -53,7 +53,7 @@ Framework capabilities needed by `RUST.md`'s port plan:
   pay nothing and import nothing for them.
 
 - [ ] **Remove `WidgetView` unless a real composite adopts it.** Every
-  composite in `app-rust/src/ui` uses ordinary child handles plus a root;
+  composite in `app/src/ui` uses ordinary child handles plus a root;
   `WidgetView` and its derive are used only by `iris/examples/view.rs`.
   It currently demonstrates itself rather than shortening production code.