Fix Windows builds by making fastembed optional

[Copilot]

Windows builds failing with ONNX Runtime linking errors (x86_64) and clang-cl incompatibility (aarch64). The fastembed dependency uses ONNX Runtime which doesn't build on Windows with MSVC toolchain.

Changes

Made fastembed optional

• Added embeddings feature (default-enabled) to Cargo.toml
• Conditional compilation in src/core/embedding.rs using #[cfg(feature = "embeddings")]
• Windows builds run with --no-default-features in release workflow

Updated release workflow

• Detects Windows targets via matrix.targets
• Passes --no-default-features for Windows builds only

TARGETS="${{ join(matrix.targets, ' ') }}"
if [[ "$TARGETS" == *"windows"* ]]; then
  dist build ... --no-default-features > dist-manifest.json

Documentation

• README notes Windows limitation: vector search unavailable, core functionality intact
• Updated cargo install instructions for --no-default-features option

Impact

• Windows binaries build and ship without embeddings/vector search
• Linux/macOS retain full functionality with default features
• No API changes for embeddings-enabled builds

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• parcel.pyke.io
  • Triggering command: /home/REDACTED/work/amdb/amdb/target/debug/build/ort-sys-1b7d35755358465a/build-script-build /home/REDACTED/work/amdb/amdb/target/debug/build/ort-sys-1b7d35755358465a/build-script-build -I /home/REDACTED/work/amdb/amdb/target/debug/build/onig_sys-42e93964e16e47ab/out -I oniguruma/src -w -DHAVE_UNISTD_H=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_TIME_H=1 -o /home/REDACTED/work/amdb/amdb/target/debug/build/onig_sys-42e93964e16e47ab/out/a445302c6d3dcb51-unicode_fold1_key.o -c e16e�� e16e47ab/out/a44-g e16e47ab/out cal/bin/as c_literal_escapecc c_std_workspace_-O0 k/amdb/amdb/targ-ffunction-sections stup/toolchains/-fdata-sections (dns block)
  • Triggering command: /home/REDACTED/work/amdb/.codeql-scratch/dbs/rust/working/target/debug/build/ort-sys-1b7d35755358465a/build-script-build /home/REDACTED/work/amdb/.codeql-scratch/dbs/rust/working/target/debug/build/ort-sys-1b7d35755358465a/build-script-build /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libaddr2line-ed0d1665fe189213.rlib /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libgimli-82f3ba019c4b6344.rlib /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libcfg_if-b8a9625d47e2e3c0.rlib /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/librustc_demangle-c04f2c50d366d1be.rlib /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libstd_detect-27563b08da68095e.rlib w-21c678f4b941a52a/build_script_build-21c678f4b941a52a.build_script_build.fef224/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libhashbrown-77a21fecb79c0678.rlib w-21c678f4b941a52a/build_script_build-21c678f4b941a52a.build_script_build.fef224/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/librustc_std_workspace_alloc-e793bd15fd20f0af.rlib w-21c678f4b941a52a/build_script_build-21c678f4b941a52a.d73zq7hlw22vrpyqclpwv3kpr/home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libminiz_oxide-7aaf0cb5e2293c31.rlib /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-u�� /home/REDACTED/.rustup/toolchains/stable-x86_64-REDACTED-linux-gnu/lib/rustlib/x86_64-REDACTED-linux-gnu/lib/libminiz_oxide-7aaf0cb5e2293c31.rlib 64-REDACTED-linux-gnu/lib/libstd-6455781cbbf0c25c.rlib 64-REDACTED-linux-gnu/lib/libpanic_unwind-9ea6681249c86daa.rlib 64-REDACTED-linux-gnu/lib/libobject-49a13cd1c17ee472.rlib 64-REDACTED-linux-gnu/lib/libmemchr-80c0d200aa1c5414.rlib 64-REDACTED-linux-gnu/lib/libaddr2line-ed0d1665fe189213.rlib 64-REDACTED-linux-gnu/lib/libgimli-82f3ba019c4b6344.rlib ld.2a973c4cf2f3687c-cgu.0.rcgu.o ld.2a973c4cf2f3687c-cgu.1.rcgu.o 7t5bb8xy2.rcgu.o (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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