Merge branch 'main' into fix/js-formatting

README.md

@@ -9,7 +9,6 @@ A simple self-hosted PaaS that auto-deploys Docker containers from Git repositor
 - Per-app UUID-based webhook URLs for Gitea integration
 - Branch filtering - only deploy on configured branch changes
 - Environment variables, labels, and volume mounts per app
-- CPU and memory resource limits per app
 - Docker builds via socket access
 - Notifications via ntfy and Slack-compatible webhooks
 - Simple server-rendered UI with Tailwind CSS

internal/database/migrations/007_add_resource_limits.sql

@@ -1,3 +0,0 @@
--- Add CPU and memory resource limits per app
-ALTER TABLE apps ADD COLUMN cpu_limit REAL;
-ALTER TABLE apps ADD COLUMN memory_limit INTEGER;

internal/docker/client.go

@@ -145,8 +145,6 @@ type CreateContainerOptions struct {
 	Volumes []VolumeMount
 	Ports   []PortMapping
 	Network string
-	CPULimit    float64 // CPU cores (e.g. 0.5 = half a core, 2.0 = two cores). 0 means unlimited.
-	MemoryLimit int64   // Memory in bytes. 0 means unlimited.
 }
 
 // VolumeMount represents a volume mount.
@@ -163,14 +161,6 @@ type PortMapping struct {
 	Protocol      string // "tcp" or "udp"
 }
 
-// nanoCPUsPerCPU is the number of NanoCPUs per CPU core.
-const nanoCPUsPerCPU = 1e9
-
-// cpuLimitToNanoCPUs converts a CPU limit (e.g. 0.5 cores) to Docker NanoCPUs.
-func cpuLimitToNanoCPUs(cpuLimit float64) int64 {
-	return int64(cpuLimit * nanoCPUsPerCPU)
-}
-
 // buildPortConfig converts port mappings to Docker port configuration.
 func buildPortConfig(ports []PortMapping) (nat.PortSet, nat.PortMap) {
 	exposedPorts := make(nat.PortSet)
@@ -195,48 +185,6 @@ func buildPortConfig(ports []PortMapping) (nat.PortSet, nat.PortMap) {
 	return exposedPorts, portBindings
 }
 
-// buildEnvSlice converts an env map to a Docker-compatible env slice.
-func buildEnvSlice(env map[string]string) []string {
-	envSlice := make([]string, 0, len(env))
-
-	for key, val := range env {
-		envSlice = append(envSlice, key+"="+val)
-	}
-
-	return envSlice
-}
-
-// buildMounts converts volume mounts to Docker mount configuration.
-func buildMounts(volumes []VolumeMount) []mount.Mount {
-	mounts := make([]mount.Mount, 0, len(volumes))
-
-	for _, vol := range volumes {
-		mounts = append(mounts, mount.Mount{
-			Type:     mount.TypeBind,
-			Source:   vol.HostPath,
-			Target:   vol.ContainerPath,
-			ReadOnly: vol.ReadOnly,
-		})
-	}
-
-	return mounts
-}
-
-// buildResources builds Docker resource constraints from container options.
-func buildResources(opts CreateContainerOptions) container.Resources {
-	resources := container.Resources{}
-
-	if opts.CPULimit > 0 {
-		resources.NanoCPUs = cpuLimitToNanoCPUs(opts.CPULimit)
-	}
-
-	if opts.MemoryLimit > 0 {
-		resources.Memory = opts.MemoryLimit
-	}
-
-	return resources
-}
-
 // CreateContainer creates a new container.
 func (c *Client) CreateContainer(
 	ctx context.Context,
@@ -248,20 +196,40 @@ func (c *Client) CreateContainer(
 
 	c.log.Info("creating container", "name", opts.Name, "image", opts.Image)
 
+	// Convert env map to slice
+	envSlice := make([]string, 0, len(opts.Env))
+
+	for key, val := range opts.Env {
+		envSlice = append(envSlice, key+"="+val)
+	}
+
+	// Convert volumes to mounts
+	mounts := make([]mount.Mount, 0, len(opts.Volumes))
+
+	for _, vol := range opts.Volumes {
+		mounts = append(mounts, mount.Mount{
+			Type:     mount.TypeBind,
+			Source:   vol.HostPath,
+			Target:   vol.ContainerPath,
+			ReadOnly: vol.ReadOnly,
+		})
+	}
+
+	// Convert ports to exposed ports and port bindings
 	exposedPorts, portBindings := buildPortConfig(opts.Ports)
 
+	// Create container
 	resp, err := c.docker.ContainerCreate(ctx,
 		&container.Config{
 			Image:        opts.Image,
-			Env:          buildEnvSlice(opts.Env),
+			Env:          envSlice,
 			Labels:       opts.Labels,
 			ExposedPorts: exposedPorts,
 		},
 		&container.HostConfig{
-			Mounts:       buildMounts(opts.Volumes),
+			Mounts:       mounts,
 			PortBindings: portBindings,
 			NetworkMode:  container.NetworkMode(opts.Network),
-			Resources:    buildResources(opts),
 			RestartPolicy: container.RestartPolicy{
 				Name: container.RestartPolicyUnlessStopped,
 			},

internal/docker/resource_limits_test.go

@@ -1,31 +0,0 @@
-package docker //nolint:testpackage // tests unexported cpuLimitToNanoCPUs
-
-import (
-	"testing"
-)
-
-func TestCpuLimitToNanoCPUs(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		cpuLimit float64
-		expected int64
-	}{
-		{"one core", 1.0, 1_000_000_000},
-		{"half core", 0.5, 500_000_000},
-		{"two cores", 2.0, 2_000_000_000},
-		{"quarter core", 0.25, 250_000_000},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
-
-			got := cpuLimitToNanoCPUs(tt.cpuLimit)
-			if got != tt.expected {
-				t.Errorf("cpuLimitToNanoCPUs(%v) = %d, want %d", tt.cpuLimit, got, tt.expected)
-			}
-		})
-	}
-}

internal/handlers/app.go

@@ -257,19 +257,23 @@ func (h *Handlers) HandleAppUpdate() http.HandlerFunc { //nolint:funlen // valid
 		application.RepoURL = request.FormValue("repo_url")
 		application.Branch = request.FormValue("branch")
 		application.DockerfilePath = request.FormValue("dockerfile_path")
-		application.DockerNetwork = optionalNullString(request.FormValue("docker_network"))
-		application.NtfyTopic = optionalNullString(request.FormValue("ntfy_topic"))
-		application.SlackWebhook = optionalNullString(request.FormValue("slack_webhook"))
 
-		limitsErr := applyResourceLimits(application, request)
-		if limitsErr != "" {
-			data := h.addGlobals(map[string]any{
-				"App":   application,
-				"Error": limitsErr,
-			}, request)
-			h.renderTemplate(writer, tmpl, "app_edit.html", data)
+		if network := request.FormValue("docker_network"); network != "" {
+			application.DockerNetwork = sql.NullString{String: network, Valid: true}
+		} else {
+			application.DockerNetwork = sql.NullString{}
+		}
 
-			return
+		if ntfy := request.FormValue("ntfy_topic"); ntfy != "" {
+			application.NtfyTopic = sql.NullString{String: ntfy, Valid: true}
+		} else {
+			application.NtfyTopic = sql.NullString{}
+		}
+
+		if slack := request.FormValue("slack_webhook"); slack != "" {
+			application.SlackWebhook = sql.NullString{String: slack, Valid: true}
+		} else {
+			application.SlackWebhook = sql.NullString{}
 		}
 
 		saveErr := application.Save(request.Context())
@@ -899,92 +903,50 @@ func (h *Handlers) addKeyValueToApp(
 	http.Redirect(writer, request, "/apps/"+application.ID, http.StatusSeeOther)
 }
 
-// envPairJSON represents a key-value pair in the JSON request body.
-type envPairJSON struct {
-	Key   string `json:"key"`
-	Value string `json:"value"`
+// HandleEnvVarAdd handles adding an environment variable.
+func (h *Handlers) HandleEnvVarAdd() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		h.addKeyValueToApp(
+			writer,
+			request,
+			func(ctx context.Context, application *models.App, key, value string) error {
+				envVar := models.NewEnvVar(h.db)
+				envVar.AppID = application.ID
+				envVar.Key = key
+				envVar.Value = value
+
+				return envVar.Save(ctx)
+			},
+		)
+	}
 }
 
-// envVarMaxBodyBytes is the maximum allowed request body size for env var saves (1 MB).
-const envVarMaxBodyBytes = 1 << 20
-
-// validateEnvPairs validates env var pairs.
-// It rejects empty keys and duplicate keys (returns a non-empty error string).
-func validateEnvPairs(pairs []envPairJSON) ([]models.EnvVarPair, string) {
-	seen := make(map[string]bool, len(pairs))
-
-	result := make([]models.EnvVarPair, 0, len(pairs))
-
-	for _, p := range pairs {
-		trimmedKey := strings.TrimSpace(p.Key)
-		if trimmedKey == "" {
-			return nil, "empty environment variable key is not allowed"
-		}
-
-		if seen[trimmedKey] {
-			return nil, "duplicate environment variable key: " + trimmedKey
-		}
-
-		seen[trimmedKey] = true
-
-		result = append(result, models.EnvVarPair{Key: trimmedKey, Value: p.Value})
-	}
-
-	return result, ""
-}
-
-// HandleEnvVarSave handles bulk saving of all environment variables.
-// It reads a JSON array of {key, value} objects from the request body,
-// deletes all existing env vars for the app, and inserts the full
-// submitted set atomically within a database transaction.
-// Duplicate keys are rejected with a 400 Bad Request error.
-func (h *Handlers) HandleEnvVarSave() http.HandlerFunc {
+// HandleEnvVarDelete handles deleting an environment variable.
+func (h *Handlers) HandleEnvVarDelete() http.HandlerFunc {
 	return func(writer http.ResponseWriter, request *http.Request) {
 		appID := chi.URLParam(request, "id")
+		envVarIDStr := chi.URLParam(request, "varID")
 
-		application, findErr := models.FindApp(request.Context(), h.db, appID)
-		if findErr != nil || application == nil {
+		envVarID, parseErr := strconv.ParseInt(envVarIDStr, 10, 64)
+		if parseErr != nil {
 			http.NotFound(writer, request)
 
 			return
 		}
 
-		// Limit request body size to prevent abuse
-		request.Body = http.MaxBytesReader(writer, request.Body, envVarMaxBodyBytes)
-
-		var pairs []envPairJSON
-
-		decodeErr := json.NewDecoder(request.Body).Decode(&pairs)
-		if decodeErr != nil {
-			h.respondJSON(writer, request, map[string]string{
-				"error": "invalid request body",
-			}, http.StatusBadRequest)
+		envVar, findErr := models.FindEnvVar(request.Context(), h.db, envVarID)
+		if findErr != nil || envVar == nil || envVar.AppID != appID {
+			http.NotFound(writer, request)
 
 			return
 		}
 
-		modelPairs, validationErr := validateEnvPairs(pairs)
-		if validationErr != "" {
-			h.respondJSON(writer, request, map[string]string{
-				"error": validationErr,
-			}, http.StatusBadRequest)
-
-			return
+		deleteErr := envVar.Delete(request.Context())
+		if deleteErr != nil {
+			h.log.Error("failed to delete env var", "error", deleteErr)
 		}
 
-		replaceErr := models.ReplaceEnvVarsByAppID(
-			request.Context(), h.db, application.ID, modelPairs,
-		)
-		if replaceErr != nil {
-			h.log.Error("failed to replace env vars", "error", replaceErr)
-			h.respondJSON(writer, request, map[string]string{
-				"error": "failed to save environment variables",
-			}, http.StatusInternalServerError)
-
-			return
-		}
-
-		h.respondJSON(writer, request, map[string]bool{"ok": true}, http.StatusOK)
+		http.Redirect(writer, request, "/apps/"+appID, http.StatusSeeOther)
 	}
 }
 
@@ -1243,6 +1205,59 @@ func ValidateVolumePath(p string) error {
 	return nil
 }
 
+// HandleEnvVarEdit handles editing an existing environment variable.
+func (h *Handlers) HandleEnvVarEdit() http.HandlerFunc {
+	return func(writer http.ResponseWriter, request *http.Request) {
+		appID := chi.URLParam(request, "id")
+		envVarIDStr := chi.URLParam(request, "varID")
+
+		envVarID, parseErr := strconv.ParseInt(envVarIDStr, 10, 64)
+		if parseErr != nil {
+			http.NotFound(writer, request)
+
+			return
+		}
+
+		envVar, findErr := models.FindEnvVar(request.Context(), h.db, envVarID)
+		if findErr != nil || envVar == nil || envVar.AppID != appID {
+			http.NotFound(writer, request)
+
+			return
+		}
+
+		formErr := request.ParseForm()
+		if formErr != nil {
+			http.Error(writer, "Bad Request", http.StatusBadRequest)
+
+			return
+		}
+
+		key := request.FormValue("key")
+		value := request.FormValue("value")
+
+		if key == "" || value == "" {
+			http.Redirect(writer, request, "/apps/"+appID, http.StatusSeeOther)
+
+			return
+		}
+
+		envVar.Key = key
+		envVar.Value = value
+
+		saveErr := envVar.Save(request.Context())
+		if saveErr != nil {
+			h.log.Error("failed to update env var", "error", saveErr)
+		}
+
+		http.Redirect(
+			writer,
+			request,
+			"/apps/"+appID+"?success=env-updated",
+			http.StatusSeeOther,
+		)
+	}
+}
+
 // HandleLabelEdit handles editing an existing label.
 func (h *Handlers) HandleLabelEdit() http.HandlerFunc {
 	return func(writer http.ResponseWriter, request *http.Request) {
@@ -1364,129 +1379,6 @@ func validateVolumePaths(hostPath, containerPath string) error {
 	return nil
 }
 
-// ErrInvalidMemoryFormat is returned when a memory limit string cannot be parsed.
-var ErrInvalidMemoryFormat = errors.New(
-	"must be a number with optional unit suffix (e.g. 256m, 1g, 512000000)",
-)
-
-// ErrNegativeValue is returned when a resource limit is negative.
-var ErrNegativeValue = errors.New("value must be positive")
-
-// Memory unit byte multipliers.
-const (
-	kilobyte = 1024
-	megabyte = 1024 * 1024
-	gigabyte = 1024 * 1024 * 1024
-)
-
-// optionalNullString converts a form value to a sql.NullString.
-// Returns a valid NullString if non-empty, invalid (NULL) if empty.
-func optionalNullString(s string) sql.NullString {
-	if s != "" {
-		return sql.NullString{String: s, Valid: true}
-	}
-
-	return sql.NullString{}
-}
-
-// applyResourceLimits parses CPU and memory limit form values and applies them to the app.
-// Returns an error message string if validation fails, or empty string on success.
-func applyResourceLimits(application *models.App, request *http.Request) string {
-	cpuLimit, cpuErr := parseOptionalFloat64(request.FormValue("cpu_limit"))
-	if cpuErr != nil {
-		return "Invalid CPU limit: must be a positive number (e.g. 0.5, 1, 2)"
-	}
-
-	application.CPULimit = cpuLimit
-
-	memoryLimit, memErr := parseOptionalMemoryBytes(request.FormValue("memory_limit"))
-	if memErr != nil {
-		return "Invalid memory limit: " + memErr.Error()
-	}
-
-	application.MemoryLimit = memoryLimit
-
-	return ""
-}
-
-// memoryUnitMultiplier returns the byte multiplier for a memory unit suffix.
-// Returns 0 if the suffix is not recognized.
-func memoryUnitMultiplier(suffix byte) int64 {
-	switch suffix {
-	case 'k':
-		return kilobyte
-	case 'm':
-		return megabyte
-	case 'g':
-		return gigabyte
-	default:
-		return 0
-	}
-}
-
-// parseOptionalFloat64 parses an optional float64 form field.
-// Returns a valid NullFloat64 if the string is non-empty and parses to a positive number.
-// Returns an empty NullFloat64 if the string is empty.
-// Returns an error if the string is non-empty but invalid or non-positive.
-func parseOptionalFloat64(s string) (sql.NullFloat64, error) {
-	s = strings.TrimSpace(s)
-	if s == "" {
-		return sql.NullFloat64{}, nil
-	}
-
-	val, err := strconv.ParseFloat(s, 64)
-	if err != nil {
-		return sql.NullFloat64{}, fmt.Errorf("invalid number: %w", err)
-	}
-
-	if val <= 0 {
-		return sql.NullFloat64{}, ErrNegativeValue
-	}
-
-	return sql.NullFloat64{Float64: val, Valid: true}, nil
-}
-
-// parseOptionalMemoryBytes parses an optional memory limit string into bytes.
-// Accepts plain bytes (e.g. "536870912") or suffixed values (e.g. "512m", "1g", "256k").
-// Returns a valid NullInt64 with bytes if non-empty, empty NullInt64 if blank.
-func parseOptionalMemoryBytes(s string) (sql.NullInt64, error) {
-	s = strings.TrimSpace(s)
-	if s == "" {
-		return sql.NullInt64{}, nil
-	}
-
-	s = strings.ToLower(s)
-
-	// Check for unit suffix
-	multiplier := memoryUnitMultiplier(s[len(s)-1])
-	if multiplier > 0 {
-		numStr := s[:len(s)-1]
-
-		val, err := strconv.ParseFloat(numStr, 64)
-		if err != nil {
-			return sql.NullInt64{}, ErrInvalidMemoryFormat
-		}
-
-		if val <= 0 {
-			return sql.NullInt64{}, ErrNegativeValue
-		}
-
-		return sql.NullInt64{Int64: int64(val * float64(multiplier)), Valid: true}, nil
-	}
-
-	// Plain bytes
-	val, err := strconv.ParseInt(s, 10, 64)
-	if err != nil {
-		return sql.NullInt64{}, ErrInvalidMemoryFormat
-	}
-
-	if val <= 0 {
-		return sql.NullInt64{}, ErrNegativeValue
-	}
-
-	return sql.NullInt64{Int64: val, Valid: true}, nil
-}
-
 // formatDeployKey formats an SSH public key with a descriptive comment.
 // Format: ssh-ed25519 AAAA... upaas_2025-01-15_myapp
 func formatDeployKey(pubKey string, createdAt time.Time, appName string) string {

internal/handlers/handlers_test.go

@@ -560,242 +560,45 @@ func testOwnershipVerification(t *testing.T, cfg ownedResourceTestConfig) {
 	cfg.verifyFn(t, testCtx, resourceID)
 }
 
-// TestHandleEnvVarSaveBulk tests that HandleEnvVarSave replaces all env vars
-// for an app with the submitted set (monolithic delete-all + insert-all).
-func TestHandleEnvVarSaveBulk(t *testing.T) {
+// TestDeleteEnvVarOwnershipVerification tests that deleting an env var
+// via another app's URL path returns 404 (IDOR prevention).
+func TestDeleteEnvVarOwnershipVerification(t *testing.T) { //nolint:dupl // intentionally similar IDOR test pattern
 	t.Parallel()
 
-	testCtx := setupTestHandlers(t)
-	createdApp := createTestApp(t, testCtx, "envvar-bulk-app")
+	testOwnershipVerification(t, ownedResourceTestConfig{
+		appPrefix1: "envvar-owner-app",
+		appPrefix2: "envvar-other-app",
+		createFn: func(t *testing.T, tc *testContext, ownerApp *models.App) int64 {
+			t.Helper()
 
-	// Create some pre-existing env vars
-	for _, kv := range [][2]string{{"OLD_KEY", "old_value"}, {"REMOVE_ME", "gone"}} {
-		ev := models.NewEnvVar(testCtx.database)
-		ev.AppID = createdApp.ID
-		ev.Key = kv[0]
-		ev.Value = kv[1]
-		require.NoError(t, ev.Save(context.Background()))
-	}
+			envVar := models.NewEnvVar(tc.database)
+			envVar.AppID = ownerApp.ID
+			envVar.Key = "SECRET"
+			envVar.Value = "hunter2"
+			require.NoError(t, envVar.Save(context.Background()))
 
-	// Submit a new set as a JSON array of key/value objects
-	body := `[{"key":"NEW_KEY","value":"new_value"},{"key":"ANOTHER","value":"42"}]`
+			return envVar.ID
+		},
+		deletePath: func(appID string, resourceID int64) string {
+			return "/apps/" + appID + "/env/" + strconv.FormatInt(resourceID, 10) + "/delete"
+		},
+		chiParams: func(appID string, resourceID int64) map[string]string {
+			return map[string]string{"id": appID, "varID": strconv.FormatInt(resourceID, 10)}
+		},
+		handler: func(h *handlers.Handlers) http.HandlerFunc { return h.HandleEnvVarDelete() },
+		verifyFn: func(t *testing.T, tc *testContext, resourceID int64) {
+			t.Helper()
 
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/"+createdApp.ID+"/env",
-		strings.NewReader(body),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusOK, recorder.Code)
-
-	// Verify old env vars are gone and new ones exist
-	envVars, err := models.FindEnvVarsByAppID(
-		context.Background(), testCtx.database, createdApp.ID,
-	)
-	require.NoError(t, err)
-	assert.Len(t, envVars, 2)
-
-	keys := make(map[string]string)
-	for _, ev := range envVars {
-		keys[ev.Key] = ev.Value
-	}
-
-	assert.Equal(t, "new_value", keys["NEW_KEY"])
-	assert.Equal(t, "42", keys["ANOTHER"])
-	assert.Empty(t, keys["OLD_KEY"], "old env vars should be deleted")
-	assert.Empty(t, keys["REMOVE_ME"], "old env vars should be deleted")
-}
-
-// TestHandleEnvVarSaveAppNotFound tests that HandleEnvVarSave returns 404
-// for a non-existent app.
-func TestHandleEnvVarSaveAppNotFound(t *testing.T) {
-	t.Parallel()
-
-	testCtx := setupTestHandlers(t)
-
-	body := `[{"key":"KEY","value":"value"}]`
-
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/nonexistent-id/env",
-		strings.NewReader(body),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusNotFound, recorder.Code)
-}
-
-// TestHandleEnvVarSaveEmptyKeyRejected verifies that submitting a JSON
-// array containing an entry with an empty key returns 400.
-func TestHandleEnvVarSaveEmptyKeyRejected(t *testing.T) {
-	t.Parallel()
-
-	testCtx := setupTestHandlers(t)
-	createdApp := createTestApp(t, testCtx, "envvar-emptykey-app")
-
-	body := `[{"key":"VALID_KEY","value":"ok"},{"key":"","value":"bad"}]`
-
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/"+createdApp.ID+"/env",
-		strings.NewReader(body),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusBadRequest, recorder.Code)
-}
-
-// TestHandleEnvVarSaveDuplicateKeyRejected verifies that when the client
-// sends duplicate keys, the server rejects them with 400 Bad Request.
-func TestHandleEnvVarSaveDuplicateKeyRejected(t *testing.T) {
-	t.Parallel()
-
-	testCtx := setupTestHandlers(t)
-	createdApp := createTestApp(t, testCtx, "envvar-dedup-app")
-
-	// Send two entries with the same key — should be rejected
-	body := `[{"key":"FOO","value":"first"},{"key":"BAR","value":"bar"},{"key":"FOO","value":"second"}]`
-
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/"+createdApp.ID+"/env",
-		strings.NewReader(body),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusBadRequest, recorder.Code)
-	assert.Contains(t, recorder.Body.String(), "duplicate environment variable key: FOO")
-}
-
-// TestHandleEnvVarSaveCrossAppIsolation verifies that posting env vars
-// to appA's endpoint does not affect appB's env vars (IDOR prevention).
-func TestHandleEnvVarSaveCrossAppIsolation(t *testing.T) {
-	t.Parallel()
-
-	testCtx := setupTestHandlers(t)
-	appA := createTestApp(t, testCtx, "envvar-iso-appA")
-	appB := createTestApp(t, testCtx, "envvar-iso-appB")
-
-	// Give appB some env vars
-	for _, kv := range [][2]string{{"B_KEY1", "b_val1"}, {"B_KEY2", "b_val2"}} {
-		ev := models.NewEnvVar(testCtx.database)
-		ev.AppID = appB.ID
-		ev.Key = kv[0]
-		ev.Value = kv[1]
-		require.NoError(t, ev.Save(context.Background()))
-	}
-
-	// POST new env vars to appA's endpoint
-	body := `[{"key":"A_KEY","value":"a_val"}]`
-
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/"+appA.ID+"/env",
-		strings.NewReader(body),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusOK, recorder.Code)
-
-	// Verify appA has exactly what we sent
-	appAVars, err := models.FindEnvVarsByAppID(
-		context.Background(), testCtx.database, appA.ID,
-	)
-	require.NoError(t, err)
-	assert.Len(t, appAVars, 1)
-	assert.Equal(t, "A_KEY", appAVars[0].Key)
-
-	// Verify appB's env vars are completely untouched
-	appBVars, err := models.FindEnvVarsByAppID(
-		context.Background(), testCtx.database, appB.ID,
-	)
-	require.NoError(t, err)
-	assert.Len(t, appBVars, 2, "appB env vars must not be affected")
-
-	bKeys := make(map[string]string)
-	for _, ev := range appBVars {
-		bKeys[ev.Key] = ev.Value
-	}
-
-	assert.Equal(t, "b_val1", bKeys["B_KEY1"])
-	assert.Equal(t, "b_val2", bKeys["B_KEY2"])
-}
-
-// TestHandleEnvVarSaveBodySizeLimit verifies that a request body
-// exceeding the 1 MB limit is rejected.
-func TestHandleEnvVarSaveBodySizeLimit(t *testing.T) {
-	t.Parallel()
-
-	testCtx := setupTestHandlers(t)
-	createdApp := createTestApp(t, testCtx, "envvar-sizelimit-app")
-
-	// Build a JSON body that exceeds 1 MB
-	// Each entry is ~30 bytes; 40000 entries ≈ 1.2 MB
-	var sb strings.Builder
-
-	sb.WriteString("[")
-
-	for i := range 40000 {
-		if i > 0 {
-			sb.WriteString(",")
-		}
-
-		sb.WriteString(`{"key":"K` + strconv.Itoa(i) + `","value":"val"}`)
-	}
-
-	sb.WriteString("]")
-
-	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
-
-	request := httptest.NewRequest(
-		http.MethodPost,
-		"/apps/"+createdApp.ID+"/env",
-		strings.NewReader(sb.String()),
-	)
-	request.Header.Set("Content-Type", "application/json")
-
-	recorder := httptest.NewRecorder()
-	r.ServeHTTP(recorder, request)
-
-	assert.Equal(t, http.StatusBadRequest, recorder.Code,
-		"oversized body should be rejected with 400")
+			found, findErr := models.FindEnvVar(context.Background(), tc.database, resourceID)
+			require.NoError(t, findErr)
+			assert.NotNil(t, found, "env var should still exist after IDOR attempt")
+		},
+	})
 }
 
 // TestDeleteLabelOwnershipVerification tests that deleting a label
 // via another app's URL path returns 404 (IDOR prevention).
-func TestDeleteLabelOwnershipVerification(t *testing.T) {
+func TestDeleteLabelOwnershipVerification(t *testing.T) { //nolint:dupl // intentionally similar IDOR test pattern
 	t.Parallel()
 
 	testOwnershipVerification(t, ownedResourceTestConfig{
@@ -911,43 +714,41 @@ func TestDeletePortOwnershipVerification(t *testing.T) {
 	assert.NotNil(t, found, "port should still exist after IDOR attempt")
 }
 
-// TestHandleEnvVarSaveEmptyClears verifies that submitting an empty JSON
-// array deletes all existing env vars for the app.
-func TestHandleEnvVarSaveEmptyClears(t *testing.T) {
+// TestHandleEnvVarDeleteUsesCorrectRouteParam verifies that HandleEnvVarDelete
+// reads the "varID" chi URL parameter (matching the route definition {varID}),
+// not a mismatched name like "envID".
+func TestHandleEnvVarDeleteUsesCorrectRouteParam(t *testing.T) {
 	t.Parallel()
 
 	testCtx := setupTestHandlers(t)
-	createdApp := createTestApp(t, testCtx, "envvar-clear-app")
 
-	// Create a pre-existing env var
-	ev := models.NewEnvVar(testCtx.database)
-	ev.AppID = createdApp.ID
-	ev.Key = "DELETE_ME"
-	ev.Value = "gone"
-	require.NoError(t, ev.Save(context.Background()))
+	createdApp := createTestApp(t, testCtx, "envdelete-param-app")
 
-	// Submit empty JSON array
+	envVar := models.NewEnvVar(testCtx.database)
+	envVar.AppID = createdApp.ID
+	envVar.Key = "DELETE_ME"
+	envVar.Value = "gone"
+	require.NoError(t, envVar.Save(context.Background()))
+
+	// Use chi router with the real route pattern to test param name
 	r := chi.NewRouter()
-	r.Post("/apps/{id}/env", testCtx.handlers.HandleEnvVarSave())
+	r.Post("/apps/{id}/env-vars/{varID}/delete", testCtx.handlers.HandleEnvVarDelete())
 
 	request := httptest.NewRequest(
 		http.MethodPost,
-		"/apps/"+createdApp.ID+"/env",
-		strings.NewReader("[]"),
+		"/apps/"+createdApp.ID+"/env-vars/"+strconv.FormatInt(envVar.ID, 10)+"/delete",
+		nil,
 	)
-	request.Header.Set("Content-Type", "application/json")
-
 	recorder := httptest.NewRecorder()
+
 	r.ServeHTTP(recorder, request)
 
-	assert.Equal(t, http.StatusOK, recorder.Code)
+	assert.Equal(t, http.StatusSeeOther, recorder.Code)
 
-	// Verify all env vars are gone
-	envVars, err := models.FindEnvVarsByAppID(
-		context.Background(), testCtx.database, createdApp.ID,
-	)
-	require.NoError(t, err)
-	assert.Empty(t, envVars, "all env vars should be deleted")
+	// Verify the env var was actually deleted
+	found, findErr := models.FindEnvVar(context.Background(), testCtx.database, envVar.ID)
+	require.NoError(t, findErr)
+	assert.Nil(t, found, "env var should be deleted when using correct route param")
 }
 
 // TestHandleVolumeAddValidatesPaths verifies that HandleVolumeAdd validates

internal/handlers/resource_limits_test.go

@@ -1,195 +0,0 @@
-package handlers //nolint:testpackage // tests unexported parsing functions
-
-import (
-	"database/sql"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestParseOptionalFloat64(t *testing.T) {
-	t.Parallel()
-
-	t.Run("empty string returns invalid", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalFloat64("")
-		require.NoError(t, err)
-		assert.False(t, result.Valid)
-	})
-
-	t.Run("whitespace only returns invalid", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalFloat64("   ")
-		require.NoError(t, err)
-		assert.False(t, result.Valid)
-	})
-
-	t.Run("valid float", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalFloat64("0.5")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.InDelta(t, 0.5, result.Float64, 0.001)
-	})
-
-	t.Run("valid integer", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalFloat64("2")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.InDelta(t, 2.0, result.Float64, 0.001)
-	})
-
-	t.Run("negative value rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalFloat64("-1")
-		require.Error(t, err)
-	})
-
-	t.Run("zero value rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalFloat64("0")
-		require.Error(t, err)
-	})
-
-	t.Run("non-numeric rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalFloat64("abc")
-		require.Error(t, err)
-	})
-}
-
-func TestParseOptionalMemoryBytes(t *testing.T) { //nolint:funlen // table-driven test
-	t.Parallel()
-
-	t.Run("empty string returns invalid", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("")
-		require.NoError(t, err)
-		assert.False(t, result.Valid)
-	})
-
-	t.Run("whitespace only returns invalid", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("   ")
-		require.NoError(t, err)
-		assert.False(t, result.Valid)
-	})
-
-	t.Run("plain bytes", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("536870912")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(536870912), result.Int64)
-	})
-
-	t.Run("megabytes suffix", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("256m")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(256*1024*1024), result.Int64)
-	})
-
-	t.Run("megabytes suffix uppercase", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("256M")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(256*1024*1024), result.Int64)
-	})
-
-	t.Run("gigabytes suffix", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("1g")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(1024*1024*1024), result.Int64)
-	})
-
-	t.Run("kilobytes suffix", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("512k")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(512*1024), result.Int64)
-	})
-
-	t.Run("fractional gigabytes", func(t *testing.T) {
-		t.Parallel()
-
-		result, err := parseOptionalMemoryBytes("1.5g")
-		require.NoError(t, err)
-		assert.True(t, result.Valid)
-		assert.Equal(t, int64(1.5*1024*1024*1024), result.Int64)
-	})
-
-	t.Run("negative value rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalMemoryBytes("-256m")
-		require.Error(t, err)
-	})
-
-	t.Run("zero value rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalMemoryBytes("0")
-		require.Error(t, err)
-	})
-
-	t.Run("invalid string rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalMemoryBytes("abc")
-		require.Error(t, err)
-	})
-
-	t.Run("negative plain bytes rejected", func(t *testing.T) {
-		t.Parallel()
-
-		_, err := parseOptionalMemoryBytes("-100")
-		require.Error(t, err)
-	})
-}
-
-func TestAppResourceLimitsRoundTrip(t *testing.T) {
-	t.Parallel()
-
-	// Test that parsing and formatting are consistent
-	tests := []struct {
-		input    string
-		expected sql.NullInt64
-		format   string
-	}{
-		{"256m", sql.NullInt64{Int64: 256 * 1024 * 1024, Valid: true}, "256m"},
-		{"1g", sql.NullInt64{Int64: 1024 * 1024 * 1024, Valid: true}, "1g"},
-		{"512k", sql.NullInt64{Int64: 512 * 1024, Valid: true}, "512k"},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.input, func(t *testing.T) {
-			t.Parallel()
-
-			result, err := parseOptionalMemoryBytes(tt.input)
-			require.NoError(t, err)
-			assert.Equal(t, tt.expected, result)
-		})
-	}
-}

internal/models/app.go

@@ -14,8 +14,7 @@ import (
 const appColumns = `id, name, repo_url, branch, dockerfile_path, webhook_secret,
 			ssh_private_key, ssh_public_key, image_id, status,
 			docker_network, ntfy_topic, slack_webhook, webhook_secret_hash,
-			previous_image_id, cpu_limit, memory_limit,
-			created_at, updated_at`
+			previous_image_id, created_at, updated_at`
 
 // AppStatus represents the status of an app.
 type AppStatus string
@@ -48,8 +47,6 @@ type App struct {
 	DockerNetwork     sql.NullString
 	NtfyTopic         sql.NullString
 	SlackWebhook      sql.NullString
-	CPULimit          sql.NullFloat64
-	MemoryLimit       sql.NullInt64
 	CreatedAt         time.Time
 	UpdatedAt         time.Time
 }
@@ -145,14 +142,14 @@ func (a *App) insert(ctx context.Context) error {
 			id, name, repo_url, branch, dockerfile_path, webhook_secret,
 			ssh_private_key, ssh_public_key, image_id, status,
 			docker_network, ntfy_topic, slack_webhook, webhook_secret_hash,
-			previous_image_id, cpu_limit, memory_limit
-		) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
+			previous_image_id
+		) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
 
 	_, err := a.db.Exec(ctx, query,
 		a.ID, a.Name, a.RepoURL, a.Branch, a.DockerfilePath, a.WebhookSecret,
 		a.SSHPrivateKey, a.SSHPublicKey, a.ImageID, a.Status,
 		a.DockerNetwork, a.NtfyTopic, a.SlackWebhook, a.WebhookSecretHash,
-		a.PreviousImageID, a.CPULimit, a.MemoryLimit,
+		a.PreviousImageID,
 	)
 	if err != nil {
 		return err
@@ -168,7 +165,6 @@ func (a *App) update(ctx context.Context) error {
 			image_id = ?, status = ?,
 			docker_network = ?, ntfy_topic = ?, slack_webhook = ?,
 			previous_image_id = ?,
-			cpu_limit = ?, memory_limit = ?,
 			updated_at = CURRENT_TIMESTAMP
 		WHERE id = ?`
 
@@ -177,7 +173,6 @@ func (a *App) update(ctx context.Context) error {
 		a.ImageID, a.Status,
 		a.DockerNetwork, a.NtfyTopic, a.SlackWebhook,
 		a.PreviousImageID,
-		a.CPULimit, a.MemoryLimit,
 		a.ID,
 	)
 
@@ -193,7 +188,6 @@ func (a *App) scan(row *sql.Row) error {
 		&a.DockerNetwork, &a.NtfyTopic, &a.SlackWebhook,
 		&a.WebhookSecretHash,
 		&a.PreviousImageID,
-		&a.CPULimit, &a.MemoryLimit,
 		&a.CreatedAt, &a.UpdatedAt,
 	)
 }
@@ -212,7 +206,6 @@ func scanApps(appDB *database.Database, rows *sql.Rows) ([]*App, error) {
 			&app.DockerNetwork, &app.NtfyTopic, &app.SlackWebhook,
 			&app.WebhookSecretHash,
 			&app.PreviousImageID,
-			&app.CPULimit, &app.MemoryLimit,
 			&app.CreatedAt, &app.UpdatedAt,
 		)
 		if scanErr != nil {

internal/models/env_var.go

@@ -1,3 +1,4 @@
+//nolint:dupl // Active Record pattern - similar structure to label.go is intentional
 package models
 
 import (
@@ -128,48 +129,13 @@ func FindEnvVarsByAppID(
 	return envVars, rows.Err()
 }
 
-// EnvVarPair is a key-value pair for bulk env var operations.
-type EnvVarPair struct {
-	Key   string
-	Value string
-}
-
-// ReplaceEnvVarsByAppID atomically replaces all env vars for an app
-// within a single database transaction. It deletes all existing env
-// vars and inserts the provided pairs. If any operation fails, the
-// entire transaction is rolled back.
-func ReplaceEnvVarsByAppID(
+// DeleteEnvVarsByAppID deletes all env vars for an app.
+func DeleteEnvVarsByAppID(
 	ctx context.Context,
 	db *database.Database,
 	appID string,
-	pairs []EnvVarPair,
 ) error {
-	tx, err := db.BeginTx(ctx, nil)
-	if err != nil {
-		return fmt.Errorf("beginning transaction: %w", err)
-	}
+	_, err := db.Exec(ctx, "DELETE FROM app_env_vars WHERE app_id = ?", appID)
 
-	defer func() { _ = tx.Rollback() }()
-
-	_, err = tx.ExecContext(ctx, "DELETE FROM app_env_vars WHERE app_id = ?", appID)
-	if err != nil {
-		return fmt.Errorf("deleting env vars: %w", err)
-	}
-
-	for _, p := range pairs {
-		_, err = tx.ExecContext(ctx,
-			"INSERT INTO app_env_vars (app_id, key, value) VALUES (?, ?, ?)",
-			appID, p.Key, p.Value,
-		)
-		if err != nil {
-			return fmt.Errorf("inserting env var %q: %w", p.Key, err)
-		}
-	}
-
-	err = tx.Commit()
-	if err != nil {
-		return fmt.Errorf("committing transaction: %w", err)
-	}
-
-	return nil
+	return err
 }

internal/models/label.go

@@ -1,3 +1,4 @@
+//nolint:dupl // Active Record pattern - similar structure to env_var.go is intentional
 package models
 
 import (

internal/models/models_test.go

@@ -781,96 +781,6 @@ func TestCascadeDelete(t *testing.T) {
 	})
 }
 
-// Resource Limits Tests.
-
-func TestAppResourceLimits(t *testing.T) { //nolint:funlen // integration test with multiple subtests
-	t.Parallel()
-
-	t.Run("saves and loads CPU limit", func(t *testing.T) {
-		t.Parallel()
-
-		testDB, cleanup := setupTestDB(t)
-		defer cleanup()
-
-		app := createTestApp(t, testDB)
-
-		app.CPULimit = sql.NullFloat64{Float64: 0.5, Valid: true}
-
-		err := app.Save(context.Background())
-		require.NoError(t, err)
-
-		found, err := models.FindApp(context.Background(), testDB, app.ID)
-		require.NoError(t, err)
-		require.NotNil(t, found)
-		assert.True(t, found.CPULimit.Valid)
-		assert.InDelta(t, 0.5, found.CPULimit.Float64, 0.001)
-	})
-
-	t.Run("saves and loads memory limit", func(t *testing.T) {
-		t.Parallel()
-
-		testDB, cleanup := setupTestDB(t)
-		defer cleanup()
-
-		app := createTestApp(t, testDB)
-
-		app.MemoryLimit = sql.NullInt64{Int64: 536870912, Valid: true} // 512m
-
-		err := app.Save(context.Background())
-		require.NoError(t, err)
-
-		found, err := models.FindApp(context.Background(), testDB, app.ID)
-		require.NoError(t, err)
-		require.NotNil(t, found)
-		assert.True(t, found.MemoryLimit.Valid)
-		assert.Equal(t, int64(536870912), found.MemoryLimit.Int64)
-	})
-
-	t.Run("null limits by default", func(t *testing.T) {
-		t.Parallel()
-
-		testDB, cleanup := setupTestDB(t)
-		defer cleanup()
-
-		app := createTestApp(t, testDB)
-
-		found, err := models.FindApp(context.Background(), testDB, app.ID)
-		require.NoError(t, err)
-		require.NotNil(t, found)
-		assert.False(t, found.CPULimit.Valid)
-		assert.False(t, found.MemoryLimit.Valid)
-	})
-
-	t.Run("clears limits when set to null", func(t *testing.T) {
-		t.Parallel()
-
-		testDB, cleanup := setupTestDB(t)
-		defer cleanup()
-
-		app := createTestApp(t, testDB)
-
-		// Set limits
-		app.CPULimit = sql.NullFloat64{Float64: 1.0, Valid: true}
-		app.MemoryLimit = sql.NullInt64{Int64: 1073741824, Valid: true} // 1g
-
-		err := app.Save(context.Background())
-		require.NoError(t, err)
-
-		// Clear limits
-		app.CPULimit = sql.NullFloat64{}
-		app.MemoryLimit = sql.NullInt64{}
-
-		err = app.Save(context.Background())
-		require.NoError(t, err)
-
-		found, err := models.FindApp(context.Background(), testDB, app.ID)
-		require.NoError(t, err)
-		require.NotNil(t, found)
-		assert.False(t, found.CPULimit.Valid)
-		assert.False(t, found.MemoryLimit.Valid)
-	})
-}
-
 // Helper function to create a test app.
 func createTestApp(t *testing.T, testDB *database.Database) *models.App {
 	t.Helper()

internal/server/routes.go

@@ -82,8 +82,10 @@ func (s *Server) SetupRoutes() {
 			r.Post("/apps/{id}/stop", s.handlers.HandleAppStop())
 			r.Post("/apps/{id}/start", s.handlers.HandleAppStart())
 
-			// Environment variables (monolithic bulk save)
-			r.Post("/apps/{id}/env", s.handlers.HandleEnvVarSave())
+			// Environment variables
+			r.Post("/apps/{id}/env-vars", s.handlers.HandleEnvVarAdd())
+			r.Post("/apps/{id}/env-vars/{varID}/edit", s.handlers.HandleEnvVarEdit())
+			r.Post("/apps/{id}/env-vars/{varID}/delete", s.handlers.HandleEnvVarDelete())
 
 			// Labels
 			r.Post("/apps/{id}/labels", s.handlers.HandleLabelAdd())

internal/service/deploy/deploy.go

@@ -1094,18 +1094,6 @@ func (svc *Service) buildContainerOptions(
 		network = app.DockerNetwork.String
 	}
 
-	var cpuLimit float64
-
-	if app.CPULimit.Valid {
-		cpuLimit = app.CPULimit.Float64
-	}
-
-	var memoryLimit int64
-
-	if app.MemoryLimit.Valid {
-		memoryLimit = app.MemoryLimit.Int64
-	}
-
 	return docker.CreateContainerOptions{
 		Name:    "upaas-" + app.Name,
 		Image:   imageID.String(),
@@ -1114,8 +1102,6 @@ func (svc *Service) buildContainerOptions(
 		Volumes: buildVolumeMounts(volumes),
 		Ports:   buildPortMappings(ports),
 		Network: network,
-		CPULimit:    cpuLimit,
-		MemoryLimit: memoryLimit,
 	}, nil
 }
 

internal/service/deploy/deploy_container_test.go

@@ -2,7 +2,6 @@ package deploy_test
 
 import (
 	"context"
-	"database/sql"
 	"log/slog"
 	"os"
 	"testing"
@@ -44,93 +43,3 @@ func TestBuildContainerOptionsUsesImageID(t *testing.T) {
 		t.Errorf("expected Name=%q, got %q", "upaas-myapp", opts.Name)
 	}
 }
-
-func TestBuildContainerOptionsNoResourceLimits(t *testing.T) {
-	t.Parallel()
-
-	db := database.NewTestDatabase(t)
-
-	app := models.NewApp(db)
-	app.Name = "nolimits"
-
-	err := app.Save(context.Background())
-	if err != nil {
-		t.Fatalf("failed to save app: %v", err)
-	}
-
-	log := slog.New(slog.NewTextHandler(os.Stderr, nil))
-	svc := deploy.NewTestService(log)
-
-	opts, err := svc.BuildContainerOptionsExported(
-		context.Background(), app, docker.ImageID("test:latest"),
-	)
-	if err != nil {
-		t.Fatalf("buildContainerOptions returned error: %v", err)
-	}
-
-	if opts.CPULimit != 0 {
-		t.Errorf("expected CPULimit=0, got %v", opts.CPULimit)
-	}
-
-	if opts.MemoryLimit != 0 {
-		t.Errorf("expected MemoryLimit=0, got %v", opts.MemoryLimit)
-	}
-}
-
-func TestBuildContainerOptionsCPULimit(t *testing.T) {
-	t.Parallel()
-
-	db := database.NewTestDatabase(t)
-
-	app := models.NewApp(db)
-	app.Name = "cpulimit"
-	app.CPULimit = sql.NullFloat64{Float64: 0.5, Valid: true}
-
-	err := app.Save(context.Background())
-	if err != nil {
-		t.Fatalf("failed to save app: %v", err)
-	}
-
-	log := slog.New(slog.NewTextHandler(os.Stderr, nil))
-	svc := deploy.NewTestService(log)
-
-	opts, err := svc.BuildContainerOptionsExported(
-		context.Background(), app, docker.ImageID("test:latest"),
-	)
-	if err != nil {
-		t.Fatalf("buildContainerOptions returned error: %v", err)
-	}
-
-	if opts.CPULimit != 0.5 {
-		t.Errorf("expected CPULimit=0.5, got %v", opts.CPULimit)
-	}
-}
-
-func TestBuildContainerOptionsMemoryLimit(t *testing.T) {
-	t.Parallel()
-
-	db := database.NewTestDatabase(t)
-
-	app := models.NewApp(db)
-	app.Name = "memlimit"
-	app.MemoryLimit = sql.NullInt64{Int64: 536870912, Valid: true} // 512m
-
-	err := app.Save(context.Background())
-	if err != nil {
-		t.Fatalf("failed to save app: %v", err)
-	}
-
-	log := slog.New(slog.NewTextHandler(os.Stderr, nil))
-	svc := deploy.NewTestService(log)
-
-	opts, err := svc.BuildContainerOptionsExported(
-		context.Background(), app, docker.ImageID("test:latest"),
-	)
-	if err != nil {
-		t.Fatalf("buildContainerOptions returned error: %v", err)
-	}
-
-	if opts.MemoryLimit != 536870912 {
-		t.Errorf("expected MemoryLimit=536870912, got %v", opts.MemoryLimit)
-	}
-}

static/js/app-detail.js

@@ -6,103 +6,6 @@
  */
 
 document.addEventListener("alpine:init", () => {
-    // ============================================
-    // Environment Variable Editor Component
-    // ============================================
-    Alpine.data("envVarEditor", (appId) => ({
-        vars: [],
-        editIdx: -1,
-        editKey: "",
-        editVal: "",
-        appId: appId,
-
-        init() {
-            this.vars = Array.from(this.$el.querySelectorAll(".env-init")).map(
-                (span) => ({
-                    key: span.dataset.key,
-                    value: span.dataset.value,
-                }),
-            );
-        },
-
-        startEdit(i) {
-            this.editIdx = i;
-            this.editKey = this.vars[i].key;
-            this.editVal = this.vars[i].value;
-        },
-
-        saveEdit(i) {
-            this.vars[i] = { key: this.editKey, value: this.editVal };
-            this.editIdx = -1;
-            this.submitAll();
-        },
-
-        removeVar(i) {
-            if (!window.confirm("Delete this environment variable?")) {
-                return;
-            }
-
-            this.vars.splice(i, 1);
-            this.submitAll();
-        },
-
-        addVar(keyEl, valEl) {
-            const k = keyEl.value.trim();
-            const v = valEl.value.trim();
-
-            if (!k) {
-                return;
-            }
-
-            this.vars.push({ key: k, value: v });
-            this.submitAll();
-        },
-
-        submitAll() {
-            const csrfInput = this.$el.querySelector(
-                'input[name="gorilla.csrf.Token"]',
-            );
-            const csrfToken = csrfInput ? csrfInput.value : "";
-
-            fetch("/apps/" + this.appId + "/env", {
-                method: "POST",
-                headers: {
-                    "Content-Type": "application/json",
-                    "X-CSRF-Token": csrfToken,
-                },
-                body: JSON.stringify(
-                    this.vars.map((e) => ({ key: e.key, value: e.value })),
-                ),
-            })
-                .then((res) => {
-                    if (res.ok) {
-                        window.location.reload();
-                        return;
-                    }
-                    res.json()
-                        .then((data) => {
-                            window.alert(
-                                data.error ||
-                                    "Failed to save environment variables.",
-                            );
-                        })
-                        .catch(() => {
-                            window.alert(
-                                "Failed to save environment variables.",
-                            );
-                        });
-                })
-                .catch(() => {
-                    window.alert(
-                        "Network error: could not save environment variables.",
-                    );
-                });
-        },
-    }));
-
-    // ============================================
-    // App Detail Page Component
-    // ============================================
     Alpine.data("appDetail", (config) => ({
         appId: config.appId,
         currentDeploymentId: config.initialDeploymentId,

templates/app_detail.html

@@ -101,10 +101,9 @@
     </div>
 
     <!-- Environment Variables -->
-    <div class="card p-6 mb-6" x-data="envVarEditor('{{.App.ID}}')">
+    <div class="card p-6 mb-6">
         <h2 class="section-title mb-4">Environment Variables</h2>
-        {{range .EnvVars}}<span class="env-init hidden" data-key="{{.Key}}" data-value="{{.Value}}"></span>{{end}}
-        <template x-if="vars.length > 0">
+        {{if .EnvVars}}
         <div class="overflow-x-auto mb-4">
             <table class="table">
                 <thead class="table-header">
@@ -115,43 +114,47 @@
                     </tr>
                 </thead>
                 <tbody class="table-body">
-                    <template x-for="(env, idx) in vars" :key="idx">
-                    <tr>
-                        <template x-if="editIdx !== idx">
-                            <td class="font-mono font-medium" x-text="env.key"></td>
+                    {{range .EnvVars}}
+                    <tr x-data="{ editing: false }">
+                        <template x-if="!editing">
+                            <td class="font-mono font-medium">{{.Key}}</td>
                         </template>
-                        <template x-if="editIdx !== idx">
-                            <td class="font-mono text-gray-500" x-text="env.value"></td>
+                        <template x-if="!editing">
+                            <td class="font-mono text-gray-500">{{.Value}}</td>
                         </template>
-                        <template x-if="editIdx !== idx">
+                        <template x-if="!editing">
                             <td class="text-right">
-                                <button @click="startEdit(idx)" class="text-primary-600 hover:text-primary-800 text-sm mr-2">Edit</button>
-                                <button @click="removeVar(idx)" class="text-error-500 hover:text-error-700 text-sm">Delete</button>
+                                <button @click="editing = true" class="text-primary-600 hover:text-primary-800 text-sm mr-2">Edit</button>
+                                <form method="POST" action="/apps/{{$.App.ID}}/env-vars/{{.ID}}/delete" class="inline" x-data="confirmAction('Delete this environment variable?')" @submit="confirm($event)">
+                                    {{ $.CSRFField }}
+                                    <button type="submit" class="text-error-500 hover:text-error-700 text-sm">Delete</button>
+                                </form>
                             </td>
                         </template>
-                        <template x-if="editIdx === idx">
+                        <template x-if="editing">
                             <td colspan="3">
-                                <form @submit.prevent="saveEdit(idx)" class="flex gap-2 items-center">
-                                    <input type="text" x-model="editKey" required class="input flex-1 font-mono text-sm">
-                                    <input type="text" x-model="editVal" required class="input flex-1 font-mono text-sm">
+                                <form method="POST" action="/apps/{{$.App.ID}}/env-vars/{{.ID}}/edit" class="flex gap-2 items-center">
+                                    {{ $.CSRFField }}
+                                    <input type="text" name="key" value="{{.Key}}" required class="input flex-1 font-mono text-sm">
+                                    <input type="text" name="value" value="{{.Value}}" required class="input flex-1 font-mono text-sm">
                                     <button type="submit" class="btn-primary text-sm">Save</button>
-                                    <button type="button" @click="editIdx = -1" class="text-gray-500 hover:text-gray-700 text-sm">Cancel</button>
+                                    <button type="button" @click="editing = false" class="text-gray-500 hover:text-gray-700 text-sm">Cancel</button>
                                 </form>
                                 <p class="text-xs text-amber-600 mt-1">⚠ Container restart needed after env var changes.</p>
                             </td>
                         </template>
                     </tr>
-                    </template>
+                    {{end}}
                 </tbody>
             </table>
         </div>
-        </template>
-        <form @submit.prevent="addVar($refs.newKey, $refs.newVal)" class="flex flex-col sm:flex-row gap-2">
-            <input x-ref="newKey" type="text" placeholder="KEY" required class="input flex-1 font-mono text-sm">
-            <input x-ref="newVal" type="text" placeholder="value" required class="input flex-1 font-mono text-sm">
+        {{end}}
+        <form method="POST" action="/apps/{{.App.ID}}/env" class="flex flex-col sm:flex-row gap-2">
+                {{ .CSRFField }}
+            <input type="text" name="key" placeholder="KEY" required class="input flex-1 font-mono text-sm">
+            <input type="text" name="value" placeholder="value" required class="input flex-1 font-mono text-sm">
             <button type="submit" class="btn-primary">Add</button>
         </form>
-        <div class="hidden">{{ .CSRFField }}</div>
     </div>
 
     <!-- Labels -->

templates/app_edit.html

@@ -114,38 +114,6 @@
                 >
             </div>
 
-            <hr class="border-gray-200">
-
-            <h3 class="text-lg font-medium text-gray-900">Resource Limits</h3>
-
-            <div class="grid grid-cols-2 gap-4">
-                <div class="form-group">
-                    <label for="cpu_limit" class="label">CPU Limit (cores)</label>
-                    <input
-                        type="text"
-                        id="cpu_limit"
-                        name="cpu_limit"
-                        value="{{if .App.CPULimit.Valid}}{{.App.CPULimit.Float64}}{{end}}"
-                        class="input"
-                        placeholder="e.g. 0.5, 1, 2"
-                    >
-                    <p class="text-sm text-gray-500 mt-1">Number of CPU cores (e.g. 0.5 = half a core)</p>
-                </div>
-
-                <div class="form-group">
-                    <label for="memory_limit" class="label">Memory Limit</label>
-                    <input
-                        type="text"
-                        id="memory_limit"
-                        name="memory_limit"
-                        value="{{if .App.MemoryLimit.Valid}}{{formatMemoryBytes .App.MemoryLimit.Int64}}{{end}}"
-                        class="input"
-                        placeholder="e.g. 256m, 1g"
-                    >
-                    <p class="text-sm text-gray-500 mt-1">Memory with unit suffix (k, m, g) or plain bytes</p>
-                </div>
-            </div>
-
             <div class="flex justify-end gap-3 pt-4">
                 <a href="/apps/{{.App.ID}}" class="btn-secondary">Cancel</a>
                 <button type="submit" class="btn-primary">Save Changes</button>

templates/templates.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"html/template"
 	"io"
-	"strconv"
 	"sync"
 )
 
@@ -24,34 +23,6 @@ var (
 	templatesMutex sync.RWMutex
 )
 
-// templateFuncs returns the custom template function map.
-func templateFuncs() template.FuncMap {
-	return template.FuncMap{
-		"formatMemoryBytes": formatMemoryBytes,
-	}
-}
-
-// Memory unit constants.
-const (
-	memGigabyte = 1024 * 1024 * 1024
-	memMegabyte = 1024 * 1024
-	memKilobyte = 1024
-)
-
-// formatMemoryBytes formats bytes into a human-readable string with unit suffix.
-func formatMemoryBytes(bytes int64) string {
-	switch {
-	case bytes >= memGigabyte && bytes%memGigabyte == 0:
-		return strconv.FormatInt(bytes/memGigabyte, 10) + "g"
-	case bytes >= memMegabyte && bytes%memMegabyte == 0:
-		return strconv.FormatInt(bytes/memMegabyte, 10) + "m"
-	case bytes >= memKilobyte && bytes%memKilobyte == 0:
-		return strconv.FormatInt(bytes/memKilobyte, 10) + "k"
-	default:
-		return strconv.FormatInt(bytes, 10)
-	}
-}
-
 // initTemplates parses base template and creates cloned templates for each page.
 func initTemplates() {
 	templatesMutex.Lock()
@@ -61,10 +32,8 @@ func initTemplates() {
 		return
 	}
 
-	// Parse base template with shared components and custom functions
-	baseTemplate = template.Must(
-		template.New("base.html").Funcs(templateFuncs()).ParseFS(templatesRaw, "base.html"),
-	)
+	// Parse base template with shared components
+	baseTemplate = template.Must(template.ParseFS(templatesRaw, "base.html"))
 
 	// Pages that extend base
 	pages := []string{

templates/templates_test.go

@@ -1,34 +0,0 @@
-package templates //nolint:testpackage // tests unexported formatMemoryBytes
-
-import (
-	"testing"
-)
-
-func TestFormatMemoryBytes(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name     string
-		bytes    int64
-		expected string
-	}{
-		{"gigabytes", 1024 * 1024 * 1024, "1g"},
-		{"two gigabytes", 2 * 1024 * 1024 * 1024, "2g"},
-		{"megabytes", 256 * 1024 * 1024, "256m"},
-		{"kilobytes", 512 * 1024, "512k"},
-		{"plain bytes", 12345, "12345"},
-		{"non-even megabytes", 256*1024*1024 + 1, "268435457"},
-		{"zero", 0, "0"},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			t.Parallel()
-
-			got := formatMemoryBytes(tt.bytes)
-			if got != tt.expected {
-				t.Errorf("formatMemoryBytes(%d) = %q, want %q", tt.bytes, got, tt.expected)
-			}
-		})
-	}
-}