feat(render): anti-aliased embedded Adwaita Mono atlas, generated and committed

tests/CMakeLists.txt

@@ -70,7 +70,12 @@ target_include_directories(plot_tests PRIVATE "${CMAKE_SOURCE_DIR}/adapters")
 target_compile_definitions(plot_tests PRIVATE PLOT_PYRAMID_COUNT_COVERS
                                              PLOT_PYRAMID_COUNT_MERGES
                                              PLOT_RING_STATS
-                                             PLOT_COUNT_MEASURE_RECOMPUTES)
+                                             PLOT_COUNT_MEASURE_RECOMPUTES
+                                             # The committed source root, so the
+                                             # atlas-generator case can run
+                                             # tools/fonts/gen_atlas.py --check
+                                             # against the committed atlas.
+                                             PLOT_SOURCE_DIR="${CMAKE_SOURCE_DIR}")
 plot_apply_warnings(plot_tests)
 
 add_test(NAME plot_tests COMMAND plot_tests)