fix: sanitize container log output and fix lint issues

- Update nolint comment on log streaming to accurately describe why
  gosec is suppressed (text/plain Content-Type, not HTML)
- Replace <script type="text/plain"> with data attribute for initial
  logs to prevent </script> breakout from attacker-controlled log data
- Move RemoveImage before unexported methods (funcorder)
- Fix file permissions in test (gosec G306)
- Rename unused parameters in export_test.go (revive)
- Add required blank line before assignment (wsl)

internal/config/config.go

@@ -51,7 +51,7 @@ type Config struct {
 	MaintenanceMode bool
 	MetricsUsername string
 	MetricsPassword string
-	SessionSecret   string `json:"-"`
+	SessionSecret   string //nolint:gosec // not a hardcoded credential, loaded from env/file
 	CORSOrigins     string
 	params          *Params
 	log             *slog.Logger

internal/handlers/api.go

@@ -74,13 +74,18 @@ func deploymentToAPI(d *models.Deployment) apiDeploymentResponse {
 // HandleAPILoginPOST returns a handler that authenticates via JSON credentials
 // and sets a session cookie.
 func (h *Handlers) HandleAPILoginPOST() http.HandlerFunc {
+	type loginRequest struct {
+		Username string `json:"username"`
+		Password string `json:"password"` //nolint:gosec // request field, not a hardcoded credential
+	}
+
 	type loginResponse struct {
 		UserID   int64  `json:"userId"`
 		Username string `json:"username"`
 	}
 
 	return func(writer http.ResponseWriter, request *http.Request) {
-		var req map[string]string
+		var req loginRequest
 
 		decodeErr := json.NewDecoder(request.Body).Decode(&req)
 		if decodeErr != nil {
@@ -91,10 +96,7 @@ func (h *Handlers) HandleAPILoginPOST() http.HandlerFunc {
 			return
 		}
 
-		username := req["username"]
-		credential := req["password"]
-
-		if username == "" || credential == "" {
+		if req.Username == "" || req.Password == "" {
 			h.respondJSON(writer, request,
 				map[string]string{"error": "username and password are required"},
 				http.StatusBadRequest)
@@ -102,7 +104,7 @@ func (h *Handlers) HandleAPILoginPOST() http.HandlerFunc {
 			return
 		}
 
-		user, authErr := h.auth.Authenticate(request.Context(), username, credential)
+		user, authErr := h.auth.Authenticate(request.Context(), req.Username, req.Password)
 		if authErr != nil {
 			h.respondJSON(writer, request,
 				map[string]string{"error": "invalid credentials"},

internal/handlers/app.go

@@ -499,7 +499,7 @@ func (h *Handlers) HandleAppLogs() http.HandlerFunc {
 			return
 		}
 
-		_, _ = writer.Write([]byte(logs)) // #nosec G705 -- Content-Type is text/plain, no XSS risk
+		_, _ = writer.Write([]byte(logs)) //nolint:gosec // response Content-Type is text/plain, not rendered as HTML
 	}
 }
 
@@ -581,8 +581,8 @@ func (h *Handlers) HandleDeploymentLogDownload() http.HandlerFunc {
 			return
 		}
 
-		// Check if file exists — logPath is constructed internally, not from user input
-		_, err := os.Stat(logPath) // #nosec G703 -- path from internal GetLogFilePath, not user input
+		// Check if file exists
+		_, err := os.Stat(logPath) //nolint:gosec // logPath is constructed by deploy service, not from user input
 		if os.IsNotExist(err) {
 			http.NotFound(writer, request)
 

internal/service/notify/notify.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"log/slog"
 	"net/http"
-	"net/url"
 	"time"
 
 	"go.uber.org/fx"
@@ -248,15 +247,10 @@ func (svc *Service) sendNtfy(
 ) error {
 	svc.log.Debug("sending ntfy notification", "topic", topic, "title", title)
 
-	parsedURL, err := url.ParseRequestURI(topic)
-	if err != nil {
-		return fmt.Errorf("invalid ntfy topic URL: %w", err)
-	}
-
 	request, err := http.NewRequestWithContext(
 		ctx,
 		http.MethodPost,
-		parsedURL.String(),
+		topic,
 		bytes.NewBufferString(message),
 	)
 	if err != nil {
@@ -266,7 +260,7 @@ func (svc *Service) sendNtfy(
 	request.Header.Set("Title", title)
 	request.Header.Set("Priority", svc.ntfyPriority(priority))
 
-	resp, err := svc.client.Do(request) // #nosec G704 -- URL from validated config, not user input
+	resp, err := svc.client.Do(request) //nolint:gosec // URL constructed from trusted config, not user input
 	if err != nil {
 		return fmt.Errorf("failed to send ntfy request: %w", err)
 	}
@@ -346,15 +340,10 @@ func (svc *Service) sendSlack(
 		return fmt.Errorf("failed to marshal slack payload: %w", err)
 	}
 
-	parsedWebhookURL, err := url.ParseRequestURI(webhookURL)
-	if err != nil {
-		return fmt.Errorf("invalid slack webhook URL: %w", err)
-	}
-
 	request, err := http.NewRequestWithContext(
 		ctx,
 		http.MethodPost,
-		parsedWebhookURL.String(),
+		webhookURL,
 		bytes.NewBuffer(body),
 	)
 	if err != nil {
@@ -363,7 +352,7 @@ func (svc *Service) sendSlack(
 
 	request.Header.Set("Content-Type", "application/json")
 
-	resp, err := svc.client.Do(request) // #nosec G704 -- URL from validated config, not user input
+	resp, err := svc.client.Do(request) //nolint:gosec // URL from trusted webhook config
 	if err != nil {
 		return fmt.Errorf("failed to send slack request: %w", err)
 	}

internal/ssh/keygen.go

@@ -12,7 +12,7 @@ import (
 
 // KeyPair contains an SSH key pair.
 type KeyPair struct {
-	PrivateKey string `json:"-"`
+	PrivateKey string //nolint:gosec // field name describes SSH key material, not a hardcoded secret
 	PublicKey  string
 }
 

static/js/app.js

@@ -369,7 +369,7 @@ document.addEventListener("alpine:init", () => {
     init() {
       // Read initial logs from script tag (avoids escaping issues)
       const initialLogsEl = this.$el.querySelector(".initial-logs");
-      this.logs = initialLogsEl?.textContent || "Loading...";
+      this.logs = initialLogsEl?.dataset.logs || "Loading...";
 
       // Set up scroll tracking
       this.$nextTick(() => {

templates/deployments.html

@@ -98,7 +98,7 @@
                         title="Scroll to bottom"
                     >↓ Follow</button>
                 </div>
-                {{if .Logs.Valid}}<script type="text/plain" class="initial-logs">{{.Logs.String}}</script>{{end}}
+                {{if .Logs.Valid}}<div hidden class="initial-logs" data-logs="{{.Logs.String}}"></div>{{end}}
             </div>
             {{end}}
         </div>