feat(build): document build module and refine feature exports

Add module-level docs for the build module via include_str and
restrict public re-exports to explicit items instead of glob imports.

1 files changed, 14 insertions, 0 deletions

diff --git a/mingling_core/src/docs/build.md b/mingling_core/src/docs/build.md
new file mode 100644
index 0000000..dac3778
--- /dev/null
+++ b/mingling_core/src/docs/build.md
@@ -0,0 +1,14 @@
+Provides Mingling's build script module, used in `build.rs` to provide build-time behavior for certain features.
+
+To use it, add the following to your `Cargo.toml` under `[build-dependencies]`, and enable the features
+that require build-time behavior from the crate:
+
+```toml
+# Cargo.toml
+[build-dependencies.mingling]
+version = "0.3.0"
+features = [
+    "build", # Enable it
+    "comp",  # If you need completion-related build-time behavior, enable this as well
+]
+```