refactor!: replace build.rs with compile-time macro build steps

BREAKING CHANGE: Replace the `build`/`builds` feature system with
compile-time macro-driven generation. `gen_program!()` now automatically
invokes `build_comp!()` and `build_pathf!()` when the `comp`/`pathf`
features are enabled, eliminating the need for `build.rs` and
`[build-dependencies]` blocks.

This removes the `build` feature, the `mingling::build` module, and all
related build-time API functions. Completion scripts are now written to
`{target_directory}/mingling/` instead of `target/release/`. The
`mingling_cli` uses `build_comp!("mling")` for its custom binary name.

1 files changed, 3 insertions, 7 deletions

diff --git a/GETTING-STARTED.md b/GETTING-STARTED.md
index 020e098..e4a706a 100644
--- a/GETTING-STARTED.md
+++ b/GETTING-STARTED.md
@@ -234,13 +234,9 @@ fn main() {
 }
 ```
 
-In your `build.rs`, generate the shell scripts:
-
-```rust
-// BUILD TIME
-// Features: ["comp", "build"]
-mingling::build::build_comp_scripts(env!("CARGO_PKG_NAME")).unwrap();
-```
+The completion scripts are generated automatically: with the `comp` feature enabled,
+`gen_program!()` invokes `build_comp!()` at compile time and writes the shell scripts
+(named after `CARGO_PKG_NAME`) into `target/mingling/`.
 
 For enum-based completions, use `suggest_enum!`: