Add DuckDB build to debian13 and drop Boost submodule rule from AGENTS.md

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

AGENTS.md

@@ -9,7 +9,6 @@
 - Add each dependency as a separate, reviewable build step so its source and version remain visible.
 - Append new dependency build steps after all existing dependency build steps. Do not insert or reorder steps in the existing build sequence, so previously successful build layers remain unchanged.
 - The log4cplus build is allowed to fetch its required `ThreadPool` submodule as a shallow repository pinned by `REL_2_0_5` to commit `cc0b6371d3963f7028c2da5fc007733f9f3bf205`. Do not fetch unused log4cplus submodules.
-- Boost is allowed to recursively clone its modular source submodules. The parent repository and every submodule must be shallow clones from the `boost-1.83.0` release tag.
 
 ## System Development Packages
 

debian13/Dockerfile

@@ -894,4 +894,22 @@ RUN aria2c \
     && rust-src/install.sh --prefix=/usr/local --without=rust-docs \
     && rm -rf rust.tar.xz rust-src
 
+RUN curl --fail --location --output duckdb.tar.gz \
+        https://wangguofang.net/github.com/duckdb/duckdb/archive/v1.5.6.tar.gz \
+    && mkdir src \
+    && tar --extract --gzip --file=duckdb.tar.gz --directory=src --strip-components=1 \
+    && rm duckdb.tar.gz \
+    && cmake -G Ninja -S src -B build -DCMAKE_BUILD_TYPE=Release \
+        -DBUILD_SHARED_LIBS=OFF \
+        -DBUILD_EXTENSIONS="core_functions;parquet;json" \
+        -DBUILD_SHELL=ON \
+        -DBUILD_UNITTESTS=OFF \
+        -DBUILD_BENCHMARKS=OFF \
+        -DENABLE_EXTENSION_AUTOLOADING=OFF \
+        -DENABLE_EXTENSION_AUTOINSTALL=OFF \
+        -DCMAKE_INSTALL_LIBDIR=lib/x86_64-linux-gnu \
+        -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+    && cmake --build build --parallel "$(nproc)" --target install \
+    && rm -rf build src
+
 CMD ["/bin/bash"]