test: consolidate integration test suites into a single test runner

Disables Cargo's automatic test target discovery (autotests = false) and gathers all 24 integration test suites under a single integration test target in tests/integration.rs.

This reduces the number of separate integration test binaries from 24 to 1 across all platforms, eliminating redundant linker invocations and peak memory pressure during cargo test while significantly improving build and test times.

Cargo.toml

@@ -4,6 +4,7 @@ version = "2026.39.0"
 edition = "2021"
 build = "build.rs"
 default-run = "OpenCADStudio"
+autotests = false
 
 [workspace]
 members = [
@@ -162,3 +163,7 @@ harness = false
 [[bench]]
 name = "command_benchmarks"
 harness = false
+
+[[test]]
+name = "integration"
+path = "tests/integration.rs"

tests/integration.rs

@@ -0,0 +1,76 @@
+//! Consolidated integration test runner for OpenCADStudio.
+//!
+//! Gathers and executes all integration test suites as submodules within a
+//! single test binary.
+
+#[path = "active_space_roundtrip.rs"]
+mod active_space_roundtrip;
+
+#[path = "annotative_context_roundtrip.rs"]
+mod annotative_context_roundtrip;
+
+#[path = "annotative_context_synthesis.rs"]
+mod annotative_context_synthesis;
+
+#[path = "block_hatch_export.rs"]
+mod block_hatch_export;
+
+#[path = "block_text_draw_depth.rs"]
+mod block_text_draw_depth;
+
+#[path = "dim_copy_check.rs"]
+mod dim_copy_check;
+
+#[path = "dim_leader_render_check.rs"]
+mod dim_leader_render_check;
+
+#[path = "dim_line_color_roundtrip.rs"]
+mod dim_line_color_roundtrip;
+
+#[path = "explode_regression.rs"]
+mod explode_regression;
+
+#[path = "flatten_regression.rs"]
+mod flatten_regression;
+
+#[path = "hatch_shader_lod.rs"]
+mod hatch_shader_lod;
+
+#[path = "mesh_shader_limits.rs"]
+mod mesh_shader_limits;
+
+#[path = "page_setup_root_repair.rs"]
+mod page_setup_root_repair;
+
+#[path = "parametric_constraints_solve.rs"]
+mod parametric_constraints_solve;
+
+#[path = "pdf_export_images_check.rs"]
+mod pdf_export_images_check;
+
+#[path = "pdf_export_text_check.rs"]
+mod pdf_export_text_check;
+
+#[path = "presspull_curved_boundary.rs"]
+mod presspull_curved_boundary;
+
+#[path = "section_plane_roundtrip.rs"]
+mod section_plane_roundtrip;
+
+#[path = "text_font_rendering.rs"]
+mod text_font_rendering;
+
+#[path = "text_shader_minification.rs"]
+mod text_shader_minification;
+
+#[path = "ucs_face_plane.rs"]
+mod ucs_face_plane;
+
+#[path = "viewport_wide_polyline_plot_width.rs"]
+mod viewport_wide_polyline_plot_width;
+
+#[path = "xclip_plot_test.rs"]
+mod xclip_plot_test;
+
+#[path = "zoom_extents_xline.rs"]
+mod zoom_extents_xline;