Rename SolveCraft to SolidCraft everywhere, with compatibility shims (#389)

* WIP deep rename (not for push)

* WIP2

* WIP3

* WIP4 wxs fix

* rustfmt

* Rename the remaining identifiers in merged crash-report code

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

crates/engine/src/cmd/sketch_fuzz_tests.rs

@@ -94,7 +94,7 @@ fn random_sketch_editing_never_breaks() {
             }
         }
         // The design round-trips.
-        let back = solvecraft_doc::Document::from_json(&s.doc.to_json()).unwrap();
+        let back = solidcraft_doc::Document::from_json(&s.doc.to_json()).unwrap();
         assert_eq!(back, *s.doc, "seed {seed}");
     }
 }