feat: Enhance AI Agent and Channel Management

- Updated labels in the AI Agents dashboard for clarity, changing "流程状态" to "Playbook 状态" and "未发布流程" to "未发布 Playbook".
- Introduced AI Agent rollout percentage management in channel editing, allowing users to set and rollback rollout percentages.
- Added new API endpoints for rolling back AI Agent rollout and fetching agent run metrics.
- Implemented new UI components for displaying agent run details, including status, duration, and input/output tokens.
- Enhanced type definitions for AdminChannel and AIAgent to include rollout percentages and runtime modes.
- Updated navigation to include a section for agent runs.
- Added new translations for agent run features in both English and Chinese.

internal/ai/runtime/readtools/graph_executor_test.go

@@ -0,0 +1,26 @@
+package readtools
+
+import (
+	"context"
+	"testing"
+
+	aitooling "agent-desk/internal/ai/tooling"
+	"agent-desk/internal/models"
+	"agent-desk/internal/pkg/toolx"
+)
+
+func TestExecuteGraphToolRejectsDisallowedToolBeforeGraphExecution(t *testing.T) {
+	definition, _, err := ExecuteGraphTool(context.Background(), models.Conversation{}, toolx.GraphAnalyzeConversation.Code, map[string]any{
+		"observedIssue": "需要分析的问题",
+	}, aitooling.Policy{
+		AllowedToolCodes:  []string{toolx.GraphPrepareTicketDraft.Code},
+		AllowedRiskLevels: []string{aitooling.RiskLevelRead},
+		Confirmed:         true,
+	})
+	if err == nil {
+		t.Fatal("expected policy guard to reject the graph tool")
+	}
+	if definition.Code != toolx.GraphAnalyzeConversation.Code {
+		t.Fatalf("definition code = %q, want %q", definition.Code, toolx.GraphAnalyzeConversation.Code)
+	}
+}