solidcore: move the pin to 19d87ca7 (main, with solidcore#1442: walls that meet are refused as WALLS_TOUCH)

Turns on the new flag offset_walls_touch_refused.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SdcgExNEwfR9CX2RAzp2Pt

Cargo.lock

@@ -4054,7 +4054,7 @@ dependencies = [
 [[package]]
 name = "solidcore"
 version = "0.0.1"
-source = "git+https://github.com/tangency-labs/solidcore?rev=3546c9bc3f1309018c8d47d1ab55843a518d3abf#3546c9bc3f1309018c8d47d1ab55843a518d3abf"
+source = "git+https://github.com/tangency-labs/solidcore?rev=19d87ca7927932937f6ee3ccce55e95f6e868f2d#19d87ca7927932937f6ee3ccce55e95f6e868f2d"
 dependencies = [
  "thiserror 2.0.21",
 ]

Cargo.toml

@@ -35,7 +35,7 @@ solidcraft-3dx-client = { path = "crates/threedx-client" }
 # they reach parity (crates/smlib/src/route.rs). Pinned; move the rev on its own commit. For a
 # local checkout, add `[patch."https://github.com/tangency-labs/solidcore"] solidcore = { path =
 # "../solidcore/crates/solidcore" }` to a `.cargo/config.toml` outside the repository.
-solidcore = { git = "https://github.com/tangency-labs/solidcore", rev = "3546c9bc3f1309018c8d47d1ab55843a518d3abf" }
+solidcore = { git = "https://github.com/tangency-labs/solidcore", rev = "19d87ca7927932937f6ee3ccce55e95f6e868f2d" }
 
 # foundation
 thiserror = "2"

crates/smlib/src/core.rs

@@ -87,6 +87,7 @@ pub(crate) fn fixes() -> UpstreamFixes {
     f.join_touching_loops = true;
     f.uv_trim_reversal_on_surface = true;
     f.offset_resolve_crossing_loops = true;
+    f.offset_walls_touch_refused = true;
     f.offset_collapsed_rounds_mated = true;
     f.offset_missing_surface_fails = true;
     f.fillet_nx1_end_rib_global_merge = true;