feat: 添加应用骨架，配置化 zap 日志贯穿全链路

- cmd/server/main.go: 使用 logger.NewLogger(cfg.Log) 替代 zap.NewProduction()

- internal/app: 依赖注入组装 DB/Slurm/Service/Handler，传递 logger

- internal/middleware: RequestLogger 请求日志中间件

- internal/server: 统一响应格式和路由注册

- go.mod: module 更名为 gcy_hpc_server，添加 gin/zap/lumberjack/gorm 依赖

- 日志初始化失败时 fail fast (os.Exit(1))

- GormLevel 从配置传递到 NewGormDB，支持 YAML 独立配置

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

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

cmd/server/main.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"gcy_hpc_server/internal/app"
+	"gcy_hpc_server/internal/config"
+	"gcy_hpc_server/internal/logger"
+
+	"go.uber.org/zap"
+)
+
+func main() {
+	cfgPath := ""
+	if len(os.Args) > 1 {
+		cfgPath = os.Args[1]
+	}
+	cfg, err := config.Load(cfgPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to load config: %v\n", err)
+		os.Exit(1)
+	}
+
+	zapLogger, err := logger.NewLogger(cfg.Log)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to init logger: %v\n", err)
+		os.Exit(1)
+	}
+	defer zapLogger.Sync()
+
+	application, err := app.NewApp(cfg, zapLogger)
+	if err != nil {
+		zapLogger.Fatal("failed to initialize application", zap.Error(err))
+	}
+	defer application.Close()
+
+	if err := application.Run(); err != nil {
+		zapLogger.Fatal("application error", zap.Error(err))
+	}
+}

cmd/server/main_test.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"gcy_hpc_server/internal/handler"
+	"gcy_hpc_server/internal/model"
+	"gcy_hpc_server/internal/server"
+	"gcy_hpc_server/internal/service"
+	"gcy_hpc_server/internal/slurm"
+	"gcy_hpc_server/internal/store"
+
+	"go.uber.org/zap"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+)
+
+func newTestDB() *gorm.DB {
+	db, _ := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{Logger: logger.Default.LogMode(logger.Silent)})
+	db.AutoMigrate(&model.JobTemplate{})
+	return db
+}
+
+func TestRouterRegistration(t *testing.T) {
+	slurmSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		json.NewEncoder(w).Encode(map[string]interface{}{"jobs": []interface{}{}})
+	}))
+	defer slurmSrv.Close()
+
+	client, _ := slurm.NewClientWithOpts(slurmSrv.URL, slurm.WithHTTPClient(slurmSrv.Client()))
+	templateStore := store.NewTemplateStore(newTestDB())
+
+	router := server.NewRouter(
+		handler.NewJobHandler(service.NewJobService(client, zap.NewNop()), zap.NewNop()),
+		handler.NewClusterHandler(service.NewClusterService(client, zap.NewNop()), zap.NewNop()),
+		handler.NewTemplateHandler(templateStore, zap.NewNop()),
+		nil,
+	)
+
+	routes := router.Routes()
+	expected := []struct {
+		method string
+		path   string
+	}{
+		{"POST", "/api/v1/jobs/submit"},
+		{"GET", "/api/v1/jobs"},
+		{"GET", "/api/v1/jobs/history"},
+		{"GET", "/api/v1/jobs/:id"},
+		{"DELETE", "/api/v1/jobs/:id"},
+		{"GET", "/api/v1/nodes"},
+		{"GET", "/api/v1/nodes/:name"},
+		{"GET", "/api/v1/partitions"},
+		{"GET", "/api/v1/partitions/:name"},
+		{"GET", "/api/v1/diag"},
+		{"GET", "/api/v1/templates"},
+		{"POST", "/api/v1/templates"},
+		{"GET", "/api/v1/templates/:id"},
+		{"PUT", "/api/v1/templates/:id"},
+		{"DELETE", "/api/v1/templates/:id"},
+	}
+
+	routeMap := map[string]bool{}
+	for _, r := range routes {
+		routeMap[r.Method+" "+r.Path] = true
+	}
+
+	for _, exp := range expected {
+		key := exp.method + " " + exp.path
+		if !routeMap[key] {
+			t.Errorf("missing route: %s", key)
+		}
+	}
+
+	if len(routes) < len(expected) {
+		t.Errorf("expected at least %d routes, got %d", len(expected), len(routes))
+	}
+}
+
+func TestSmokeGetJobsEndpoint(t *testing.T) {
+	slurmSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(map[string]interface{}{"jobs": []interface{}{}})
+	}))
+	defer slurmSrv.Close()
+
+	client, _ := slurm.NewClientWithOpts(slurmSrv.URL, slurm.WithHTTPClient(slurmSrv.Client()))
+	templateStore := store.NewTemplateStore(newTestDB())
+
+	router := server.NewRouter(
+		handler.NewJobHandler(service.NewJobService(client, zap.NewNop()), zap.NewNop()),
+		handler.NewClusterHandler(service.NewClusterService(client, zap.NewNop()), zap.NewNop()),
+		handler.NewTemplateHandler(templateStore, zap.NewNop()),
+		nil,
+	)
+
+	w := httptest.NewRecorder()
+	req, _ := http.NewRequest(http.MethodGet, "/api/v1/jobs", nil)
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	var resp map[string]interface{}
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to parse response: %v", err)
+	}
+	if success, ok := resp["success"].(bool); !ok || !success {
+		t.Fatalf("expected success=true, got %v", resp["success"])
+	}
+}

go.mod

@@ -1,3 +1,53 @@
-module slurm-client
+module gcy_hpc_server
 
-go 1.22
+go 1.25.0
+
+require (
+	github.com/gin-gonic/gin v1.12.0
+	go.uber.org/zap v1.27.1
+	gopkg.in/natefinch/lumberjack.v2 v2.2.1
+	gopkg.in/yaml.v3 v3.0.1
+	gorm.io/driver/mysql v1.6.0
+	gorm.io/driver/sqlite v1.6.0
+	gorm.io/gorm v1.31.1
+)
+
+require (
+	filippo.io/edwards25519 v1.1.0 // indirect
+	github.com/bytedance/gopkg v0.1.3 // indirect
+	github.com/bytedance/sonic v1.15.0 // indirect
+	github.com/bytedance/sonic/loader v0.5.0 // indirect
+	github.com/cloudwego/base64x v0.1.6 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/gabriel-vasile/mimetype v1.4.12 // indirect
+	github.com/gin-contrib/sse v1.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.30.1 // indirect
+	github.com/go-sql-driver/mysql v1.9.3 // indirect
+	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/goccy/go-yaml v1.19.2 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.22 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
+	github.com/quic-go/quic-go v0.59.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.3.1 // indirect
+	go.mongodb.org/mongo-driver/v2 v2.5.0 // indirect
+	go.uber.org/multierr v1.10.0 // indirect
+	golang.org/x/arch v0.22.0 // indirect
+	golang.org/x/crypto v0.48.0 // indirect
+	golang.org/x/net v0.51.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
+)

go.sum

@@ -0,0 +1,123 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
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+github.com/bytedance/gopkg v0.1.3/go.mod h1:576VvJ+eJgyCzdjS+c4+77QF3p7ubbtiKARP3TxducM=
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internal/app/app.go

@@ -0,0 +1,159 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"gcy_hpc_server/internal/config"
+	"gcy_hpc_server/internal/handler"
+	"gcy_hpc_server/internal/server"
+	"gcy_hpc_server/internal/service"
+	"gcy_hpc_server/internal/slurm"
+	"gcy_hpc_server/internal/store"
+
+	"go.uber.org/zap"
+	"gorm.io/gorm"
+)
+
+// App encapsulates the entire application lifecycle.
+type App struct {
+	cfg    *config.Config
+	logger *zap.Logger
+	db     *gorm.DB
+	server *http.Server
+}
+
+// NewApp initializes all application dependencies: DB, Slurm client, services, handlers, router.
+func NewApp(cfg *config.Config, logger *zap.Logger) (*App, error) {
+	gormDB, err := initDB(cfg, logger)
+	if err != nil {
+		return nil, err
+	}
+
+	slurmClient, err := initSlurmClient(cfg)
+	if err != nil {
+		closeDB(gormDB)
+		return nil, err
+	}
+
+	srv := initHTTPServer(cfg, gormDB, slurmClient, logger)
+
+	return &App{
+		cfg:    cfg,
+		logger: logger,
+		db:     gormDB,
+		server: srv,
+	}, nil
+}
+
+// Run starts the HTTP server and blocks until a shutdown signal or server error.
+func (a *App) Run() error {
+	errCh := make(chan error, 1)
+	go func() {
+		a.logger.Info("starting server", zap.String("addr", a.server.Addr))
+		if err := a.server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			errCh <- fmt.Errorf("server listen: %w", err)
+		}
+	}()
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+
+	select {
+	case err := <-errCh:
+		// Server crashed before receiving a signal — clean up resources before
+		// returning, because the caller may call os.Exit and skip deferred Close().
+		a.logger.Error("server exited unexpectedly", zap.Error(err))
+		_ = a.Close()
+		return err
+	case sig := <-quit:
+		a.logger.Info("received shutdown signal", zap.String("signal", sig.String()))
+	}
+
+	a.logger.Info("shutting down server...")
+	return a.Close()
+}
+
+// Close cleans up all resources: HTTP server and database connections.
+func (a *App) Close() error {
+	var errs []error
+
+	if a.server != nil {
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+		if err := a.server.Shutdown(ctx); err != nil && err != http.ErrServerClosed {
+			errs = append(errs, fmt.Errorf("shutdown http server: %w", err))
+		}
+	}
+
+	if a.db != nil {
+		sqlDB, err := a.db.DB()
+		if err != nil {
+			errs = append(errs, fmt.Errorf("get underlying sql.DB: %w", err))
+		} else if err := sqlDB.Close(); err != nil {
+			errs = append(errs, fmt.Errorf("close database: %w", err))
+		}
+	}
+
+	return errors.Join(errs...)
+}
+
+// ---------------------------------------------------------------------------
+// Initialization helpers
+// ---------------------------------------------------------------------------
+
+func initDB(cfg *config.Config, logger *zap.Logger) (*gorm.DB, error) {
+	gormDB, err := store.NewGormDB(cfg.MySQLDSN, logger, cfg.Log.GormLevel)
+	if err != nil {
+		return nil, fmt.Errorf("init database: %w", err)
+	}
+
+	if err := store.AutoMigrate(gormDB); err != nil {
+		closeDB(gormDB)
+		return nil, fmt.Errorf("run migrations: %w", err)
+	}
+
+	return gormDB, nil
+}
+
+func closeDB(db *gorm.DB) {
+	if db == nil {
+		return
+	}
+	if sqlDB, err := db.DB(); err == nil {
+		_ = sqlDB.Close()
+	}
+}
+
+func initSlurmClient(cfg *config.Config) (*slurm.Client, error) {
+	client, err := service.NewSlurmClient(cfg.SlurmAPIURL, cfg.SlurmUserName, cfg.SlurmJWTKeyPath)
+	if err != nil {
+		return nil, fmt.Errorf("init slurm client: %w", err)
+	}
+	return client, nil
+}
+
+func initHTTPServer(cfg *config.Config, db *gorm.DB, slurmClient *slurm.Client, logger *zap.Logger) *http.Server {
+	jobSvc := service.NewJobService(slurmClient, logger)
+	clusterSvc := service.NewClusterService(slurmClient, logger)
+	templateStore := store.NewTemplateStore(db)
+
+	jobH := handler.NewJobHandler(jobSvc, logger)
+	clusterH := handler.NewClusterHandler(clusterSvc, logger)
+	templateH := handler.NewTemplateHandler(templateStore, logger)
+
+	router := server.NewRouter(jobH, clusterH, templateH, logger)
+
+	addr := ":" + cfg.ServerPort
+
+	return &http.Server{
+		Addr:    addr,
+		Handler: router,
+	}
+}

internal/app/app_test.go

@@ -0,0 +1,25 @@
+package app
+
+import (
+	"testing"
+
+	"gcy_hpc_server/internal/config"
+
+	"go.uber.org/zap/zaptest"
+)
+
+func TestNewApp_InvalidDB(t *testing.T) {
+	cfg := &config.Config{
+		ServerPort:      "8080",
+		MySQLDSN:        "invalid:dsn@tcp(localhost:99999)/nonexistent?parseTime=true",
+		SlurmAPIURL:     "http://localhost:6820",
+		SlurmUserName:   "root",
+		SlurmJWTKeyPath: "/nonexistent/jwt.key",
+	}
+	logger := zaptest.NewLogger(t)
+
+	_, err := NewApp(cfg, logger)
+	if err == nil {
+		t.Fatal("expected error for invalid DSN, got nil")
+	}
+}

internal/middleware/logger.go

@@ -0,0 +1,25 @@
+package middleware
+
+import (
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+// RequestLogger returns a Gin middleware that logs each request using zap.
+func RequestLogger(logger *zap.Logger) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		start := time.Now()
+
+		c.Next()
+
+		logger.Info("request",
+			zap.String("method", c.Request.Method),
+			zap.String("path", c.Request.URL.Path),
+			zap.Int("status", c.Writer.Status()),
+			zap.Duration("latency", time.Since(start)),
+			zap.String("client_ip", c.ClientIP()),
+		)
+	}
+}

internal/server/response.go

@@ -0,0 +1,44 @@
+package server
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// APIResponse represents the unified JSON structure for all API responses.
+type APIResponse struct {
+	Success bool        `json:"success"`
+	Data    interface{} `json:"data,omitempty"`
+	Error   string      `json:"error,omitempty"`
+}
+
+// OK responds with 200 and success data.
+func OK(c *gin.Context, data interface{}) {
+	c.JSON(http.StatusOK, APIResponse{Success: true, Data: data})
+}
+
+// Created responds with 201 and success data.
+func Created(c *gin.Context, data interface{}) {
+	c.JSON(http.StatusCreated, APIResponse{Success: true, Data: data})
+}
+
+// BadRequest responds with 400 and an error message.
+func BadRequest(c *gin.Context, msg string) {
+	c.JSON(http.StatusBadRequest, APIResponse{Success: false, Error: msg})
+}
+
+// NotFound responds with 404 and an error message.
+func NotFound(c *gin.Context, msg string) {
+	c.JSON(http.StatusNotFound, APIResponse{Success: false, Error: msg})
+}
+
+// InternalError responds with 500 and an error message.
+func InternalError(c *gin.Context, msg string) {
+	c.JSON(http.StatusInternalServerError, APIResponse{Success: false, Error: msg})
+}
+
+// ErrorWithStatus responds with a custom status code and an error message.
+func ErrorWithStatus(c *gin.Context, code int, msg string) {
+	c.JSON(code, APIResponse{Success: false, Error: msg})
+}

internal/server/response_test.go

@@ -0,0 +1,116 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func setupTestContext() (*httptest.ResponseRecorder, *gin.Context) {
+	gin.SetMode(gin.TestMode)
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	return w, c
+}
+
+func parseResponse(t *testing.T, w *httptest.ResponseRecorder) APIResponse {
+	t.Helper()
+	var resp APIResponse
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to parse response body: %v", err)
+	}
+	return resp
+}
+
+func TestOK(t *testing.T) {
+	w, c := setupTestContext()
+	OK(c, map[string]string{"msg": "hello"})
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if !resp.Success {
+		t.Fatal("expected success=true")
+	}
+}
+
+func TestCreated(t *testing.T) {
+	w, c := setupTestContext()
+	Created(c, map[string]int{"id": 1})
+
+	if w.Code != http.StatusCreated {
+		t.Fatalf("expected 201, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if !resp.Success {
+		t.Fatal("expected success=true")
+	}
+}
+
+func TestBadRequest(t *testing.T) {
+	w, c := setupTestContext()
+	BadRequest(c, "invalid input")
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected 400, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if resp.Success {
+		t.Fatal("expected success=false")
+	}
+	if resp.Error != "invalid input" {
+		t.Fatalf("expected error 'invalid input', got '%s'", resp.Error)
+	}
+}
+
+func TestNotFound(t *testing.T) {
+	w, c := setupTestContext()
+	NotFound(c, "resource missing")
+
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("expected 404, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if resp.Success {
+		t.Fatal("expected success=false")
+	}
+	if resp.Error != "resource missing" {
+		t.Fatalf("expected error 'resource missing', got '%s'", resp.Error)
+	}
+}
+
+func TestInternalError(t *testing.T) {
+	w, c := setupTestContext()
+	InternalError(c, "something broke")
+
+	if w.Code != http.StatusInternalServerError {
+		t.Fatalf("expected 500, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if resp.Success {
+		t.Fatal("expected success=false")
+	}
+	if resp.Error != "something broke" {
+		t.Fatalf("expected error 'something broke', got '%s'", resp.Error)
+	}
+}
+
+func TestErrorWithStatus(t *testing.T) {
+	w, c := setupTestContext()
+	ErrorWithStatus(c, http.StatusConflict, "already exists")
+
+	if w.Code != http.StatusConflict {
+		t.Fatalf("expected 409, got %d", w.Code)
+	}
+	resp := parseResponse(t, w)
+	if resp.Success {
+		t.Fatal("expected success=false")
+	}
+	if resp.Error != "already exists" {
+		t.Fatalf("expected error 'already exists', got '%s'", resp.Error)
+	}
+}

internal/server/server.go

@@ -0,0 +1,111 @@
+package server
+
+import (
+	"net/http"
+
+	"gcy_hpc_server/internal/middleware"
+
+	"github.com/gin-gonic/gin"
+	"go.uber.org/zap"
+)
+
+type JobHandler interface {
+	SubmitJob(c *gin.Context)
+	GetJobs(c *gin.Context)
+	GetJobHistory(c *gin.Context)
+	GetJob(c *gin.Context)
+	CancelJob(c *gin.Context)
+}
+
+type ClusterHandler interface {
+	GetNodes(c *gin.Context)
+	GetNode(c *gin.Context)
+	GetPartitions(c *gin.Context)
+	GetPartition(c *gin.Context)
+	GetDiag(c *gin.Context)
+}
+
+type TemplateHandler interface {
+	ListTemplates(c *gin.Context)
+	CreateTemplate(c *gin.Context)
+	GetTemplate(c *gin.Context)
+	UpdateTemplate(c *gin.Context)
+	DeleteTemplate(c *gin.Context)
+}
+
+// NewRouter creates a Gin engine with all API v1 routes registered with real handlers.
+func NewRouter(jobH JobHandler, clusterH ClusterHandler, templateH TemplateHandler, logger *zap.Logger) *gin.Engine {
+	gin.SetMode(gin.ReleaseMode)
+	r := gin.New()
+	r.Use(gin.Recovery())
+	if logger != nil {
+		r.Use(middleware.RequestLogger(logger))
+	}
+
+	v1 := r.Group("/api/v1")
+
+	jobs := v1.Group("/jobs")
+	jobs.POST("/submit", jobH.SubmitJob)
+	jobs.GET("", jobH.GetJobs)
+	jobs.GET("/history", jobH.GetJobHistory)
+	jobs.GET("/:id", jobH.GetJob)
+	jobs.DELETE("/:id", jobH.CancelJob)
+
+	v1.GET("/nodes", clusterH.GetNodes)
+	v1.GET("/nodes/:name", clusterH.GetNode)
+
+	v1.GET("/partitions", clusterH.GetPartitions)
+	v1.GET("/partitions/:name", clusterH.GetPartition)
+
+	v1.GET("/diag", clusterH.GetDiag)
+
+	templates := v1.Group("/templates")
+	templates.GET("", templateH.ListTemplates)
+	templates.POST("", templateH.CreateTemplate)
+	templates.GET("/:id", templateH.GetTemplate)
+	templates.PUT("/:id", templateH.UpdateTemplate)
+	templates.DELETE("/:id", templateH.DeleteTemplate)
+
+	return r
+}
+
+// NewTestRouter creates a router for testing without real handlers.
+func NewTestRouter() *gin.Engine {
+	gin.SetMode(gin.TestMode)
+	r := gin.New()
+	r.Use(gin.Recovery())
+	v1 := r.Group("/api/v1")
+	registerPlaceholderRoutes(v1)
+	return r
+}
+
+func registerPlaceholderRoutes(v1 *gin.RouterGroup) {
+	jobs := v1.Group("/jobs")
+	jobs.POST("/submit", notImplemented)
+	jobs.GET("", notImplemented)
+	jobs.GET("/history", notImplemented)
+	jobs.GET("/:id", notImplemented)
+	jobs.DELETE("/:id", notImplemented)
+
+	v1.GET("/nodes", notImplemented)
+	v1.GET("/nodes/:name", notImplemented)
+
+	v1.GET("/partitions", notImplemented)
+	v1.GET("/partitions/:name", notImplemented)
+
+	v1.GET("/diag", notImplemented)
+
+	templates := v1.Group("/templates")
+	templates.GET("", notImplemented)
+	templates.POST("", notImplemented)
+	templates.GET("/:id", notImplemented)
+	templates.PUT("/:id", notImplemented)
+	templates.DELETE("/:id", notImplemented)
+}
+
+func notImplemented(c *gin.Context) {
+	c.JSON(http.StatusNotImplemented, APIResponse{
+		Success: false,
+		Error:   "not implemented",
+	})
+}

internal/server/server_test.go

@@ -0,0 +1,108 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+)
+
+func TestAllRoutesRegistered(t *testing.T) {
+	r := NewTestRouter()
+	routes := r.Routes()
+
+	expected := []struct {
+		method string
+		path   string
+	}{
+		{"POST", "/api/v1/jobs/submit"},
+		{"GET", "/api/v1/jobs"},
+		{"GET", "/api/v1/jobs/history"},
+		{"GET", "/api/v1/jobs/:id"},
+		{"DELETE", "/api/v1/jobs/:id"},
+		{"GET", "/api/v1/nodes"},
+		{"GET", "/api/v1/nodes/:name"},
+		{"GET", "/api/v1/partitions"},
+		{"GET", "/api/v1/partitions/:name"},
+		{"GET", "/api/v1/diag"},
+		{"GET", "/api/v1/templates"},
+		{"POST", "/api/v1/templates"},
+		{"GET", "/api/v1/templates/:id"},
+		{"PUT", "/api/v1/templates/:id"},
+		{"DELETE", "/api/v1/templates/:id"},
+	}
+
+	routeMap := map[string]bool{}
+	for _, route := range routes {
+		key := route.Method + " " + route.Path
+		routeMap[key] = true
+	}
+
+	for _, exp := range expected {
+		key := exp.method + " " + exp.path
+		if !routeMap[key] {
+			t.Errorf("missing route: %s", key)
+		}
+	}
+
+	if len(routes) < len(expected) {
+		t.Errorf("expected at least %d routes, got %d", len(expected), len(routes))
+	}
+}
+
+func TestUnregisteredPathReturns404(t *testing.T) {
+	r := NewTestRouter()
+	w := httptest.NewRecorder()
+	req, _ := http.NewRequest(http.MethodGet, "/api/v1/nonexistent", nil)
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("expected 404 for unregistered path, got %d", w.Code)
+	}
+}
+
+func TestRegisteredPathReturns501(t *testing.T) {
+	r := NewTestRouter()
+
+	endpoints := []struct {
+		method string
+		path   string
+	}{
+		{"GET", "/api/v1/jobs"},
+		{"GET", "/api/v1/nodes"},
+		{"GET", "/api/v1/partitions"},
+		{"GET", "/api/v1/diag"},
+		{"GET", "/api/v1/templates"},
+	}
+
+	for _, ep := range endpoints {
+		w := httptest.NewRecorder()
+		req, _ := http.NewRequest(ep.method, ep.path, nil)
+		r.ServeHTTP(w, req)
+
+		if w.Code != http.StatusNotImplemented {
+			t.Fatalf("%s %s: expected 501, got %d", ep.method, ep.path, w.Code)
+		}
+
+		var resp APIResponse
+		if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+			t.Fatalf("failed to parse response: %v", err)
+		}
+		if resp.Success {
+			t.Fatal("expected success=false")
+		}
+		if resp.Error != "not implemented" {
+			t.Fatalf("expected error 'not implemented', got '%s'", resp.Error)
+		}
+	}
+}
+
+func TestRouterUsesGinMode(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	r := NewTestRouter()
+	if r == nil {
+		t.Fatal("NewRouter returned nil")
+	}
+}