feat: scaffold FCES-native C++ project with libtorch integration

- CMakeLists.txt with libtorch, GoogleTest, GoogleBenchmark, OpenMP, pybind11
- Header files: config, controller, population, fitness, evolution, spectral, oscillation, telemetry, optimizer
- Source implementations: controller (full micro-MLP forward pass, mutation, crossover), fitness (Welford's algorithm), oscillation (DFT), spectral (SVD rank), optimizer (sign-SGD stub)
- Tests: controller, population, fitness, optimizer (Google Test)
- Benchmarks: evolve throughput, optimizer step (Google Benchmark)
- Examples: simple optimization, PyTorch/libtorch integration
- Python extension: pybind11 bindings with setup.py
- README with architecture diagram and build instructions

tests/test_controller.cpp

@@ -0,0 +1,58 @@
+#include <gtest/gtest.h>
+#include "fces/controller.hpp"
+
+using namespace fces;
+
+TEST(ControllerTest, Construction) {
+    FuzzyController ctrl;
+    EXPECT_GT(ctrl.id, 0u);
+    EXPECT_EQ(ctrl.fitness, 0.0f);
+    EXPECT_EQ(ctrl.origin, "random");
+}
+
+TEST(ControllerTest, GenomeSize) {
+    FuzzyController ctrl;
+    EXPECT_EQ(ctrl.genome.weights.size(), static_cast<size_t>(GENOME_SIZE));
+}
+
+TEST(ControllerTest, Mutation) {
+    FuzzyController parent;
+    auto child = parent.mutate(1.0f);
+    EXPECT_NE(child.id, parent.id);
+    EXPECT_EQ(child.origin, "mutation");
+    // Child should differ from parent
+    bool differs = false;
+    for (size_t i = 0; i < parent.genome.weights.size(); ++i) {
+        if (parent.genome.weights[i] != child.genome.weights[i]) {
+            differs = true;
+            break;
+        }
+    }
+    EXPECT_TRUE(differs);
+}
+
+TEST(ControllerTest, Crossover) {
+    FuzzyController a, b;
+    auto child = a.crossover(b);
+    EXPECT_EQ(child.origin, "crossover");
+}
+
+TEST(ControllerTest, DecideUpdate) {
+    FuzzyController ctrl;
+    std::vector<std::vector<float>> stats = {{0.1f, 0.2f, 0.3f, 0.4f, 0.5f}};
+    auto actions = ctrl.decide_update(stats, 0.0f, 0.5f, 0.0f, 0.1f, 0.0f, 0.0f, 1.0f, 0.0f);
+    EXPECT_EQ(actions.size(0), 1);
+    EXPECT_EQ(actions.size(1), GENOME_OUTPUT_DIM);
+}
+
+TEST(ControllerTest, OrthogonalChild) {
+    FuzzyController parent;
+    auto child = parent.create_orthogonal_child(1.0f);
+    EXPECT_EQ(child.origin, "phoenix_rebirth");
+}
+
+TEST(ControllerTest, BanachFission) {
+    FuzzyController parent;
+    auto [plus, minus] = parent.banach_tarski_fission(1.0f);
+    EXPECT_NE(plus.id, minus.id);
+}