refactor: address 5-pass audit findings for antipatterns, bottlenecks, memory efficiency, and LLM handlers

nvim-core/build.rs

@@ -0,0 +1,22 @@
+use std::process::Command;
+
+fn main() {
+    let git_hash = Command::new("git")
+        .args(["rev-parse", "--short", "HEAD"])
+        .output()
+        .ok()
+        .and_then(|out| String::from_utf8(out.stdout).ok())
+        .unwrap_or_else(|| "unknown".to_string());
+
+    let git_date = Command::new("git")
+        .args(["log", "-1", "--format=%cd", "--date=format:%y.%m.%d.%H%M%S"])
+        .output()
+        .ok()
+        .and_then(|out| String::from_utf8(out.stdout).ok())
+        .unwrap_or_else(|| "unknown".to_string());
+
+    let version = format!("{} ({})", git_date.trim(), git_hash.trim());
+    println!("cargo:rustc-env=APP_VERSION={version}");
+    println!("cargo:rerun-if-changed=../.git/HEAD");
+    println!("cargo:rerun-if-changed=../.git/index");
+}