fix: support keyless Ollama and harden exec working_dir checks

pkg/providers/factory.go

@@ -33,6 +33,7 @@ type providerSelection struct {
 	workspace        string
 	connectMode      string
 	enableWebSearch  bool
+	allowEmptyAPIKey bool
 }
 
 func resolveProviderSelection(cfg *config.Config) (providerSelection, error) {
@@ -172,6 +173,14 @@ func resolveProviderSelection(cfg *config.Config) (providerSelection, error) {
 					sel.model = "deepseek-chat"
 				}
 			}
+		case "ollama":
+			sel.apiKey = cfg.Providers.Ollama.APIKey
+			sel.apiBase = cfg.Providers.Ollama.APIBase
+			sel.proxy = cfg.Providers.Ollama.Proxy
+			if sel.apiBase == "" {
+				sel.apiBase = "http://localhost:11434/v1"
+			}
+			sel.allowEmptyAPIKey = true
 		case "github_copilot", "copilot":
 			sel.providerType = providerTypeGitHubCopilot
 			if cfg.Providers.GitHubCopilot.APIBase != "" {
@@ -268,13 +277,14 @@ func resolveProviderSelection(cfg *config.Config) (providerSelection, error) {
 			if sel.apiBase == "" {
 				sel.apiBase = "https://integrate.api.nvidia.com/v1"
 			}
-		case (strings.Contains(lowerModel, "ollama") || strings.HasPrefix(model, "ollama/")) && cfg.Providers.Ollama.APIKey != "":
+		case (strings.Contains(lowerModel, "ollama") || strings.HasPrefix(model, "ollama/")) && (cfg.Providers.Ollama.APIBase != "" || cfg.Providers.Ollama.APIKey != ""):
 			sel.apiKey = cfg.Providers.Ollama.APIKey
 			sel.apiBase = cfg.Providers.Ollama.APIBase
 			sel.proxy = cfg.Providers.Ollama.Proxy
 			if sel.apiBase == "" {
 				sel.apiBase = "http://localhost:11434/v1"
 			}
+			sel.allowEmptyAPIKey = true
 		case cfg.Providers.VLLM.APIBase != "":
 			sel.apiKey = cfg.Providers.VLLM.APIKey
 			sel.apiBase = cfg.Providers.VLLM.APIBase
@@ -295,7 +305,7 @@ func resolveProviderSelection(cfg *config.Config) (providerSelection, error) {
 	}
 
 	if sel.providerType == providerTypeHTTPCompat {
-		if sel.apiKey == "" && !strings.HasPrefix(model, "bedrock/") {
+		if sel.apiKey == "" && !strings.HasPrefix(model, "bedrock/") && !sel.allowEmptyAPIKey {
 			return providerSelection{}, fmt.Errorf("no API key configured for provider (model: %s)", model)
 		}
 		if sel.apiBase == "" {

pkg/providers/factory_test.go

@@ -135,6 +135,24 @@ func TestResolveProviderSelection(t *testing.T) {
 			wantType:    providerTypeHTTPCompat,
 			wantAPIBase: "http://localhost:11434/v1",
 		},
+		{
+			name: "explicit ollama provider allows empty key and uses default base",
+			setup: func(cfg *config.Config) {
+				cfg.Agents.Defaults.Provider = "ollama"
+				cfg.Agents.Defaults.Model = "qwen2.5:14b"
+			},
+			wantType:    providerTypeHTTPCompat,
+			wantAPIBase: "http://localhost:11434/v1",
+		},
+		{
+			name: "ollama model allows api base without key",
+			setup: func(cfg *config.Config) {
+				cfg.Agents.Defaults.Model = "ollama/qwen2.5:14b"
+				cfg.Providers.Ollama.APIBase = "http://localhost:11434/v1"
+			},
+			wantType:    providerTypeHTTPCompat,
+			wantAPIBase: "http://localhost:11434/v1",
+		},
 		{
 			name: "moonshot model keeps proxy and default base",
 			setup: func(cfg *config.Config) {

pkg/tools/shell.go

@@ -142,7 +142,8 @@ func (t *ExecTool) Execute(ctx context.Context, args map[string]any) *ToolResult
 		return ErrorResult("command is required")
 	}
 
-	cwd := t.workingDir
+	workspaceRoot := t.workingDir
+	cwd := workspaceRoot
 	if wd, ok := args["working_dir"].(string); ok && wd != "" {
 		if t.restrictToWorkspace && t.workingDir != "" {
 			resolvedWD, err := validatePath(wd, t.workingDir, true)
@@ -150,6 +151,10 @@ func (t *ExecTool) Execute(ctx context.Context, args map[string]any) *ToolResult
 				return ErrorResult("Command blocked by safety guard (" + err.Error() + ")")
 			}
 			cwd = resolvedWD
+		} else if filepath.IsAbs(wd) {
+			cwd = wd
+		} else if workspaceRoot != "" {
+			cwd = filepath.Join(workspaceRoot, wd)
 		} else {
 			cwd = wd
 		}
@@ -162,6 +167,20 @@ func (t *ExecTool) Execute(ctx context.Context, args map[string]any) *ToolResult
 		}
 	}
 
+	if absCwd, err := filepath.Abs(cwd); err == nil {
+		cwd = absCwd
+	}
+
+	if t.restrictToWorkspace && workspaceRoot != "" {
+		absWorkspace, err := filepath.Abs(workspaceRoot)
+		if err == nil {
+			rel, err := filepath.Rel(absWorkspace, cwd)
+			if err != nil || rel == ".." || strings.HasPrefix(rel, ".."+string(filepath.Separator)) {
+				return ErrorResult("working_dir must be within workspace")
+			}
+		}
+	}
+
 	if guardError := t.guardCommand(command, cwd); guardError != "" {
 		return ErrorResult(guardError)
 	}
@@ -285,7 +304,12 @@ func (t *ExecTool) guardCommand(command, cwd string) string {
 			return "Command blocked by safety guard (path traversal detected)"
 		}
 
-		cwdPath, err := filepath.Abs(cwd)
+		basePath := cwd
+		if t.workingDir != "" {
+			basePath = t.workingDir
+		}
+
+		basePath, err := filepath.Abs(basePath)
 		if err != nil {
 			return ""
 		}
@@ -299,7 +323,7 @@ func (t *ExecTool) guardCommand(command, cwd string) string {
 				continue
 			}
 
-			rel, err := filepath.Rel(cwdPath, p)
+			rel, err := filepath.Rel(basePath, p)
 			if err != nil {
 				continue
 			}