Fix llama-server version selection

internal/inference/llama.go

@@ -111,6 +111,17 @@ func findLlamaBinary() string {
 		}
 	}
 
+	// Prefer a llama-server installed next to csghub-lite. Background services
+	// often receive a smaller or differently ordered PATH than the interactive
+	// shell that ran the installer; searching PATH first can therefore select a
+	// stale system-wide llama-server instead of the matching co-located release.
+	exePath, _ := os.Executable()
+	if sibling := llamaBinarySiblingPath(exePath, runtime.GOOS); sibling != "" {
+		if _, err := os.Stat(sibling); err == nil {
+			return sibling
+		}
+	}
+
 	// Search common names in PATH
 	names := []string{"llama-server", "llama.cpp-server", "llamacpp-server"}
 	for _, name := range names {
@@ -120,7 +131,6 @@ func findLlamaBinary() string {
 	}
 	// Check common install locations
 	home, _ := os.UserHomeDir()
-	exePath, _ := os.Executable()
 	for _, loc := range llamaBinaryCandidatePaths(home, exePath, runtime.GOOS) {
 		if _, err := os.Stat(loc); err == nil {
 			return loc
@@ -129,6 +139,17 @@ func findLlamaBinary() string {
 	return ""
 }
 
+func llamaBinarySiblingPath(exePath, goos string) string {
+	if strings.TrimSpace(exePath) == "" {
+		return ""
+	}
+	name := "llama-server"
+	if goos == "windows" {
+		name += ".exe"
+	}
+	return filepath.Join(filepath.Dir(exePath), name)
+}
+
 func llamaBinaryCandidatePaths(home, exePath, goos string) []string {
 	name := "llama-server"
 	if goos == "windows" {

internal/inference/llama_binary_test.go

@@ -6,6 +6,20 @@ import (
 	"testing"
 )
 
+func TestLlamaBinarySiblingPath(t *testing.T) {
+	wantName := "llama-server"
+	if runtime.GOOS == "windows" {
+		wantName += ".exe"
+	}
+	want := filepath.Join("opt", "csghub-lite", wantName)
+	if got := llamaBinarySiblingPath(filepath.Join("opt", "csghub-lite", "csghub-lite"), runtime.GOOS); got != want {
+		t.Fatalf("llamaBinarySiblingPath() = %q, want %q", got, want)
+	}
+	if got := llamaBinarySiblingPath("", runtime.GOOS); got != "" {
+		t.Fatalf("llamaBinarySiblingPath(empty) = %q, want empty", got)
+	}
+}
+
 func TestLlamaBinaryCandidatePathsIncludesInstallerLocations(t *testing.T) {
 	home := filepath.Join("Users", "james")
 	exePath := filepath.Join(home, ".local", "bin", "csghub-lite")

scripts/install.sh

@@ -799,12 +799,17 @@ install_llama_server() {
     # @rpath against those compatibility names, not just the versioned payload files.
     if [ -w "$_llama_dir" ]; then
         find "$_tmpdir" \( -type f -o -type l \) \( -name "*.dylib" -o -name "*.so" -o -name "*.so.*" \) | while read -r _lib; do
+            # mv may follow an existing destination symlink instead of replacing
+            # it, leaving compatibility links pinned to the previous release.
+            # Remove only the exact incoming basename before installing it.
+            rm -f "${_llama_dir}/$(basename "$_lib")"
             mv "$_lib" "$_llama_dir/"
         done
         mv "$_llama_bin" "$_llama_dir/"
     else
         info "Requires root privileges to install llama-server."
         find "$_tmpdir" \( -type f -o -type l \) \( -name "*.dylib" -o -name "*.so" -o -name "*.so.*" \) | while read -r _lib; do
+            run_privileged rm -f "${_llama_dir}/$(basename "$_lib")"
             run_privileged mv "$_lib" "$_llama_dir/"
         done
         run_privileged mv "$_llama_bin" "$_llama_dir/"