crucible v0.1: CPU inference library for PyTorch .pt state dicts, in pure Zig

- restricted pickle VM (whitelisted globals — cannot execute arbitrary
  Python, unlike torch.load)
- zip container reader (store + raw-deflate)
- Tensor views: dtype/offset/sizes/strides, f32 materialization
- layers: conv2d f32x8 FMA, linear, relu, maxpool2, adaptiveAvgPool2d,
  softmax, padInput
- examples/stripsolver: real .pt forward, 3777 @ 1.0

👾 Generated with [Letta Code](https://letta.com)

Co-Authored-By: Letta Code <noreply@letta.com>

build.zig

@@ -0,0 +1,49 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    // The library module — what downstream consumers import.
+    const crucible_mod = b.addModule("crucible", .{
+        .root_source_file = b.path("src/crucible.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    // Static lib artifact (optional install).
+    const lib = b.addLibrary(.{
+        .name = "crucible",
+        .root_module = crucible_mod,
+    });
+    b.installArtifact(lib);
+
+    // Example executable: stripsolver (needs a tests/ png decoder? no —
+    // example is self-contained: it uses crucible only for state dict +
+    // layers; arm input comes from CSV).
+    const example_mod = b.createModule(.{
+        .root_source_file = b.path("examples/stripsolver.zig"),
+        .target = target,
+        .optimize = optimize,
+        .imports = &.{
+            .{ .name = "crucible", .module = crucible_mod },
+        },
+    });
+    const example = b.addExecutable(.{
+        .name = "stripsolver",
+        .root_module = example_mod,
+    });
+    b.installArtifact(example);
+
+    const run_example = b.addRunArtifact(example);
+    run_example.step.dependOn(b.getInstallStep());
+    if (b.args) |args| run_example.addArgs(args);
+    const run_step = b.step("run", "Run the stripsolver example");
+    run_step.dependOn(&run_example.step);
+
+    // Unit tests.
+    const tests = b.addTest(.{ .root_module = crucible_mod });
+    const run_tests = b.addRunArtifact(tests);
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&run_tests.step);
+}