fix: ListModels returns empty on network error, reduce MaxOutput to 2000 (closes #5, closes #7)

internal/ollama/client.go

@@ -144,7 +144,8 @@ func ListModels() ([]string, error) {
 client := &http.Client{Timeout: 5 * time.Second}
 resp, err := client.Get(Host + "/api/tags")
 if err != nil {
-return nil, err
+// Network/connection error — return empty list so callers stay safe.
+return []string{}, nil
 }
 defer resp.Body.Close()
 

internal/tools/tools.go

@@ -11,7 +11,7 @@ import (
 "github.com/AgentGuardHQ/shellforge/internal/logger"
 )
 
-const MaxOutput = 8000
+const MaxOutput = 2000
 
 type Definition struct {
 Name        string