Add blitz: Zig HTTP server with epoll multi-threading

frameworks/blitz/Dockerfile

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+FROM debian:bookworm-slim AS build
+RUN apt-get update && apt-get install -y wget xz-utils && \
+    wget -q https://ziglang.org/download/0.14.0/zig-linux-x86_64-0.14.0.tar.xz && \
+    tar xf zig-linux-x86_64-0.14.0.tar.xz && \
+    mv zig-linux-x86_64-0.14.0 /usr/local/zig
+ENV PATH="/usr/local/zig:$PATH"
+WORKDIR /app
+COPY build.zig build.zig.zon ./
+COPY src ./src
+RUN zig build -Doptimize=ReleaseFast
+
+FROM debian:bookworm-slim
+COPY --from=build /app/zig-out/bin/blitz /server
+EXPOSE 8080
+CMD ["/server"]

frameworks/blitz/README.md

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+# blitz ⚡
+
+A blazing-fast HTTP/1.1 server written in Zig, built to compete in [HttpArena](https://github.com/MDA2AV/HttpArena).
+
+## Design
+
+- **Language:** Zig — C-level performance with better ergonomics
+- **I/O:** epoll with edge-triggered notifications
+- **Threading:** SO_REUSEPORT multi-threading (one accept socket per core, no lock contention)
+- **Parsing:** Zero-copy HTTP request parsing
+- **Responses:** Pre-computed static responses, pipeline batching
+- **Memory:** Arena-style per-connection buffers, minimal heap allocations in hot path
+
+## Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/pipeline` | GET | Returns "ok" — pipelining benchmark |
+| `/baseline11` | GET/POST | Query param sum, optional body parsing |
+| `/baseline2` | GET | Query param sum (H2 baseline) |
+| `/json` | GET | Pre-computed JSON dataset response |
+| `/upload` | POST | Returns body byte count |
+| `/static/{file}` | GET | Pre-loaded static files |
+
+## Building
+
+```bash
+zig build -Doptimize=ReleaseFast
+```
+
+## Running
+
+```bash
+./zig-out/bin/blitz
+```
+
+The server listens on port 8080 and spawns one worker thread per available CPU core.

frameworks/blitz/build.zig

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+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "blitz",
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+        .single_threaded = false,
+    });
+
+    exe.linkLibC();
+
+    b.installArtifact(exe);
+
+    const run_cmd = b.addRunArtifact(exe);
+    run_cmd.step.dependOn(b.getInstallStep());
+    const run_step = b.step("run", "Run the server");
+    run_step.dependOn(&run_cmd.step);
+}

frameworks/blitz/build.zig.zon

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+.{
+    .name = .blitz,
+    .version = "0.1.0",
+    .fingerprint = 0xe8a54ff4e60f9038,
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "src",
+    },
+}

frameworks/blitz/meta.json

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+{
+  "display_name": "blitz",
+  "language": "Zig",
+  "type": "engine",
+  "engine": "epoll",
+  "description": "Custom Zig HTTP server built on epoll with SO_REUSEPORT multi-threading. Zero allocations in the hot path, pre-computed responses, pipeline batching.",
+  "repo": "https://github.com/BennyFranciscus/blitz",
+  "enabled": true,
+  "tests": [
+    "baseline",
+    "pipelined",
+    "noisy",
+    "limited-conn",
+    "json",
+    "upload"
+  ]
+}