chore: extend .gitattributes for shell scripts and binary assets

Append explicit `*.sh text eol=lf` and `*.bash text eol=lf` rules so
shell scripts (notably anything COPYed into a Linux container) check out
with LF endings on Windows hosts with `core.autocrlf=true`, regardless
of the auto-detection on the existing `* text=auto eol=lf` line. Add
binary markers for `*.node`, `*.wasm`, `*.onnx`, `*.so`, `*.dll`,
`*.dylib` so native and ML model artifacts aren't ever subjected to text
normalization.

The existing `* text=auto eol=lf` and `.husky/* text eol=lf` rules are
preserved. `git ls-files --eol` confirmed zero CRLF or mixed blobs in
the index, so no `--renormalize` was needed.

.gitattributes

@@ -1,2 +1,17 @@
 * text=auto eol=lf
 .husky/* text eol=lf
+
+# Shell scripts: force LF unconditionally so devcontainer scripts
+# (e.g. anything COPYed into a Linux container) execute correctly when
+# checked out on Windows hosts with core.autocrlf=true.
+*.sh text eol=lf
+*.bash text eol=lf
+
+# Native and binary assets shouldn't be treated as text under any
+# auto-detection or eol normalization.
+*.node binary
+*.wasm binary
+*.onnx binary
+*.so binary
+*.dll binary
+*.dylib binary