New docs

docs/dependencies-and-build/target-directory.md

@@ -1,2 +1,23 @@
 # Target directory
 
+By default, DCR writes final artifacts to `target/<profile>/`.
+
+You can override this with `build.target`:
+
+```toml
+[build]
+target = "./dist"
+```
+
+## Behavior
+
+- Binary mode:
+  - Linux/macOS: `<target>/<name>`
+  - Windows: `<target>/<name>.exe`
+- Static library mode:
+  - Linux/macOS: `<target>/lib<name>.a`
+  - Windows: `<target>/<name>.lib`
+
+## Important detail
+
+`build.target` changes only the final artifact location. Object cache and dependency sync directories still use `target/<profile>/...`.