Merge pull request 'chore: Go 1.26 modernization' (#3) from chore/go-1.26-modernization into main

cmd/tasks/cmd.go

@@ -5,13 +5,13 @@ package tasks
 import (
 	"context"
 	"os"
-	"sort"
+	"slices"
 	"strings"
 	"time"
 
+	"forge.lthn.ai/core/cli/pkg/cli"
 	"forge.lthn.ai/core/go-agentic"
 	"forge.lthn.ai/core/go-ai/ai"
-	"forge.lthn.ai/core/cli/pkg/cli"
 	"forge.lthn.ai/core/go/pkg/i18n"
 )
 
@@ -154,8 +154,8 @@ var taskCmd = &cli.Command{
 				agentic.PriorityLow:      3,
 			}
 
-			sort.Slice(tasks, func(i, j int) bool {
+			slices.SortFunc(tasks, func(a, b agentic.Task) int {
-				return priorityOrder[tasks[i].Priority] < priorityOrder[tasks[j].Priority]
+				return priorityOrder[a.Priority] - priorityOrder[b.Priority]
 			})
 
 			task = &tasks[0]

cmd/workspace/cmd_agent.go

@@ -23,6 +23,7 @@ package workspace
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"path/filepath"
 	"strings"
@@ -92,7 +93,7 @@ func agentContextPath(wsPath, provider, name string) string {
 func parseAgentID(id string) (provider, name string, err error) {
 	parts := strings.SplitN(id, "/", 2)
 	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
-		return "", "", fmt.Errorf("agent ID must be provider/agent-name (e.g. claude-opus/qa)")
+		return "", "", errors.New("agent ID must be provider/agent-name (e.g. claude-opus/qa)")
 	}
 	return parts[0], parts[1], nil
 }

cmd/workspace/config.go

@@ -1,6 +1,7 @@
 package workspace
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -99,5 +100,5 @@ func FindWorkspaceRoot() (string, error) {
 		dir = parent
 	}
 
-	return "", fmt.Errorf("not in a workspace")
+	return "", errors.New("not in a workspace")
 }