Refactor command parsing and building

pkg/backends/llamacpp/llama.go

@@ -328,3 +328,31 @@ func (o *LlamaServerOptions) BuildCommandArgs() []string {
 	}
 	return backends.BuildCommandArgs(o, multipleFlags)
 }
+
+// ParseLlamaCommand parses a llama-server command string into LlamaServerOptions
+// Supports multiple formats:
+// 1. Full command: "llama-server --model file.gguf"
+// 2. Full path: "/usr/local/bin/llama-server --model file.gguf"
+// 3. Args only: "--model file.gguf --gpu-layers 32"
+// 4. Multiline commands with backslashes
+func ParseLlamaCommand(command string) (*LlamaServerOptions, error) {
+	executableNames := []string{"llama-server"}
+	var subcommandNames []string // Llama has no subcommands
+	multiValuedFlags := map[string]bool{
+		"override_tensor":       true,
+		"override_kv":           true,
+		"lora":                  true,
+		"lora_scaled":           true,
+		"control_vector":        true,
+		"control_vector_scaled": true,
+		"dry_sequence_breaker":  true,
+		"logit_bias":            true,
+	}
+
+	var llamaOptions LlamaServerOptions
+	if err := backends.ParseCommand(command, executableNames, subcommandNames, multiValuedFlags, &llamaOptions); err != nil {
+		return nil, err
+	}
+
+	return &llamaOptions, nil
+}