feat: 添加基础类型、工具函数和客户端测试

包含 Ptr[T] 泛型辅助函数、4 种 NoVal 类型（Uint64/Uint32/Uint16/Float64）、字符串集合类型、OpenapiMeta/Error/Warning，以及对应的序列化测试和客户端集成测试。

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/slurm/types.go

@@ -0,0 +1,73 @@
+package slurm
+
+// Ptr returns a pointer to the given value. Useful for optional fields.
+func Ptr[T any](v T) *T { return &v }
+
+// ---------------------------------------------------------------------------
+// NoVal types — 3-field structs representing "set/infinite/number" pattern
+// from the Slurm OpenAPI spec. All fields are optional (pointer).
+// ---------------------------------------------------------------------------
+
+// Uint64NoVal represents an optional uint64 that can be unset or infinite.
+type Uint64NoVal struct {
+	Set      *bool  `json:"set,omitempty"`
+	Infinite *bool  `json:"infinite,omitempty"`
+	Number   *int64 `json:"number,omitempty"`
+}
+
+// Uint32NoVal represents an optional uint32 that can be unset or infinite.
+type Uint32NoVal struct {
+	Set      *bool  `json:"set,omitempty"`
+	Infinite *bool  `json:"infinite,omitempty"`
+	Number   *int64 `json:"number,omitempty"`
+}
+
+// Uint16NoVal represents an optional uint16 that can be unset or infinite.
+type Uint16NoVal struct {
+	Set      *bool  `json:"set,omitempty"`
+	Infinite *bool  `json:"infinite,omitempty"`
+	Number   *int64 `json:"number,omitempty"`
+}
+
+// Float64NoVal represents an optional float64 that can be unset or infinite.
+type Float64NoVal struct {
+	Set      *bool    `json:"set,omitempty"`
+	Infinite *bool    `json:"infinite,omitempty"`
+	Number   *float64 `json:"number,omitempty"`
+}
+
+// ---------------------------------------------------------------------------
+// String collection types — all marshal/unmarshal as JSON arrays of strings.
+// ---------------------------------------------------------------------------
+
+// CSVString is a comma-separated string collection.
+type CSVString []string
+
+// StringArray is a string array type (v0.0.40_string_array).
+type StringArray []string
+
+// StringList is a string list type (v0.0.40_string_list).
+type StringList []string
+
+// Hostlist is a hostlist type (v0.0.40_hostlist).
+type Hostlist []string
+
+// HostlistString is a hostlist string type (v0.0.40_hostlist_string).
+type HostlistString []string
+
+// ---------------------------------------------------------------------------
+// Process exit types
+// ---------------------------------------------------------------------------
+
+// ProcessExitCodeVerbose represents a verbose process exit code.
+type ProcessExitCodeVerbose struct {
+	Status     []string           `json:"status,omitempty"`
+	ReturnCode *Uint32NoVal       `json:"return_code,omitempty"`
+	Signal     *ProcessExitSignal `json:"signal,omitempty"`
+}
+
+// ProcessExitSignal represents a signal received by a process.
+type ProcessExitSignal struct {
+	ID   *Uint16NoVal `json:"id,omitempty"`
+	Name *string      `json:"name,omitempty"`
+}