feat(editor): add project-composed Audio, Animation, Avatar, and Biome workspace editors

C++ owns documents, transactions, and preview; example scripts compose EditorWorkspace panels. Stop Ninja source-list rescans from restamping every Windows TU.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/editor_audio_source_script.cpp

@@ -0,0 +1,58 @@
+#include "zeroerr/assert.h"
+#include "zeroerr/unittest.h"
+
+#include "common/Module.h"
+
+#include <simplesquirrel/simplesquirrel.hpp>
+
+#include <cmath>
+#include <string>
+
+TEST_CASE("editor.audio.source_editor_script_composes_workspace_and_transactions") {
+    ssq::VM vm(2048, ssq::Libs::ALL);
+    eve::ModuleManager::expose(vm);
+    vm.run(vm.compileSource(R"(
+        editor <- eve.Editor();
+        workspace <- editor.newWorkspace("test.audio", "Test Audio Editor");
+        created <- eve.AudioEditorModule().create("test.asset.tone");
+        audioEditor <- created.value;
+        configured <- audioEditor.configureWorkspace(workspace);
+        workspacePanelCount <- workspace.getPanelCount();
+        panel0 <- workspace.getPanelId(0);
+        cap0 <- workspace.getPanelCapability(0);
+        ctx1 <- workspace.getPanelContext(1);
+        viewport <- audioEditor.setViewportWidth(400.0);
+        beforeVolume <- audioEditor.getFloat("play.volume");
+        volumeResult <- audioEditor.setFloat("play.volume", 0.2);
+        afterVolume <- audioEditor.getFloat("play.volume");
+        revisionAfter <- audioEditor.getRevision();
+        undoResult <- audioEditor.undo();
+        restoredVolume <- audioEditor.getFloat("play.volume");
+        playResult <- audioEditor.play();
+        advanced <- audioEditor.update(0.25);
+        playhead <- audioEditor.getPlayhead();
+        seekResult <- audioEditor.seekSeconds(0.4);
+        seeked <- audioEditor.getPlayhead();
+        buckets <- audioEditor.getBucketCount();
+    )"));
+
+    CHECK(vm.find("created").toTable().get<bool>("ok"));
+    CHECK_EQ(vm.find("created").toTable().get<std::string>("ownership"), std::string("owned"));
+    CHECK(vm.find("configured").toTable().get<bool>("ok"));
+    CHECK_EQ(vm.find("workspacePanelCount").toInt(), 4);
+    CHECK_EQ(vm.find("panel0").toString(), std::string("audio.sources"));
+    CHECK_EQ(vm.find("cap0").toString(), std::string("audio.source"));
+    CHECK_EQ(vm.find("ctx1").toString(), std::string("preview"));
+    CHECK(vm.find("viewport").toTable().get<bool>("ok"));
+    CHECK(vm.find("volumeResult").toTable().get<bool>("ok"));
+    CHECK_LT(std::abs(vm.find("afterVolume").toFloat() - 0.2F), 0.0001F);
+    CHECK(vm.find("undoResult").toTable().get<bool>("ok"));
+    CHECK_LT(std::abs(vm.find("restoredVolume").toFloat() - vm.find("beforeVolume").toFloat()), 0.0001F);
+    CHECK(vm.find("playResult").toTable().get<bool>("ok"));
+    CHECK(vm.find("advanced").toTable().get<bool>("ok"));
+    CHECK(vm.find("playhead").toFloat() > 0.0F);
+    CHECK(vm.find("seekResult").toTable().get<bool>("ok"));
+    CHECK_LT(std::abs(vm.find("seeked").toFloat() - 0.4F), 0.02F);
+    CHECK(vm.find("buckets").toInt() > 8);
+    (void)vm.find("revisionAfter");
+}