Add handy-httpd: D language HTTP server (first D entry! ~36⭐)

frameworks/handy-httpd/Dockerfile

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+FROM ubuntu:24.04 AS build
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        curl gcc xz-utils ca-certificates pkg-config \
+        libsqlite3-dev zlib1g-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install LDC
+ARG LDC_VERSION=1.42.0
+RUN curl -fsSL "https://github.com/ldc-developers/ldc/releases/download/v${LDC_VERSION}/ldc2-${LDC_VERSION}-linux-x86_64.tar.xz" \
+    | tar xJ -C /opt && \
+    ln -s /opt/ldc2-${LDC_VERSION}-linux-x86_64 /opt/ldc
+ENV PATH="/opt/ldc/bin:${PATH}"
+
+WORKDIR /app
+COPY dub.sdl .
+COPY src ./src
+RUN dub build -b release --compiler=ldc2
+
+FROM ubuntu:24.04
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends libsqlite3-0 zlib1g && \
+    rm -rf /var/lib/apt/lists/*
+COPY --from=build /app/httparena-handy-httpd /server
+EXPOSE 8080
+CMD ["/server"]

frameworks/handy-httpd/README.md

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+# handy-httpd
+
+An extremely lightweight HTTP server for the [D programming language](https://dlang.org/).
+
+- **Language:** D
+- **Repository:** https://github.com/andrewlalis/handy-httpd
+- **Stars:** ~36
+- **Compiler:** LDC2 (LLVM-based D compiler)
+
+## About
+
+handy-httpd is a solo-dev passion project by [@andrewlalis](https://github.com/andrewlalis), maintained since 2021. It provides a clean, composable API with routing via `PathHandler`, WebSocket support, and middleware via filters — all while staying extremely lightweight.
+
+D compiles to native code via LLVM (LDC) and offers manual memory management with optional GC, making it an interesting performance data point between C/C++ and higher-level languages.
+
+## Build
+
+```bash
+docker build -t httparena-handy-httpd .
+```

frameworks/handy-httpd/dub.sdl

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+name "httparena-handy-httpd"
+targetType "executable"
+targetName "httparena-handy-httpd"
+
+dependency "handy-httpd" version="~>8.7.0"
+dependency "d2sqlite3" version="~>1.0.0"
+
+dflags "-O3" "-release" "-boundscheck=off" "-link-defaultlib-shared=false" platform="ldc"
+lflags "-lsqlite3" "-lz"

frameworks/handy-httpd/meta.json

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+{
+  "display_name": "handy-httpd",
+  "language": "D",
+  "type": "framework",
+  "engine": "handy-httpd",
+  "description": "Extremely lightweight HTTP server for the D programming language. Solo-dev passion project with routing, WebSocket support, and clean API.",
+  "repo": "https://github.com/andrewlalis/handy-httpd",
+  "enabled": true,
+  "tests": [
+    "baseline",
+    "pipelined",
+    "limited-conn",
+    "json",
+    "upload",
+    "compression",
+    "mixed"
+  ]
+}