Rename displayed product to SolidCraft and add header bug reporting

docs/book/src/dev/architecture.md

@@ -1,6 +1,6 @@
 # Architecture
 
-SolveCraft is a Cargo workspace in layers. A crate only depends on crates in lower layers, and
+SolidCraft is a Cargo workspace in layers. A crate only depends on crates in lower layers, and
 `cargo xtask layers` fails the build otherwise.
 
 {{#include ../../../../README.md:architecture}}
@@ -11,7 +11,7 @@ The web app, `apps/solvecraft-web`, is the desktop front end compiled to wasm wi
 
 A few rules follow from the layering:
 
-- **Only `crates/kernel` touches truck.** Everything above it sees SolveCraft's own types:
+- **Only `crates/kernel` touches truck.** Everything above it sees SolidCraft's own types:
   bodies, faces, edges, meshes and measures. See [The kernel boundary](kernel.md).
 - **The document knows nothing about commands or the UI.** `crates/doc` holds the parameters,
   the feature timeline and the component tree, and evaluates them into a model.