feat(codex): normalize items and emit subagent task events

- Normalize commandExecution, fileChange, webSearch, mcpToolCall, and dynamicToolCall items to Claude-compatible data shapes with toolName + input + extras
- Map Codex collabAgentToolCall (spawnAgent/wait/closeAgent) to task.started/task.completed events for AgentGroupCard rendering
- Track subagent lifecycle idempotently across reconnects using SubagentTaskTracker keyed by parentThreadId|subagentThreadId
- Surface durationMs for tasks and tool calls
- Sanitize MCP server/tool segment names (__ → _) while preserving originals for McpToolCallCard

Author: tyulyukov

apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.test.ts

@@ -2781,6 +2781,7 @@ describe("ProviderRuntimeIngestion", () => {
         taskId: "turn-task-1",
         status: "completed",
         summary: "<proposed_plan>\n# Plan title\n</proposed_plan>",
+        durationMs: 1234,
       },
     });
     harness.emit({
@@ -2835,6 +2836,7 @@ describe("ProviderRuntimeIngestion", () => {
     );
     expect(completed?.kind).toBe("task.completed");
     expect(completedPayload?.detail).toBe("<proposed_plan>\n# Plan title\n</proposed_plan>");
+    expect(completedPayload?.durationMs).toBe(1234);
     expect(
       thread.proposedPlans.find(
         (entry: ProviderRuntimeTestProposedPlan) => entry.id === "plan:thread-1:turn:turn-task-1",

apps/server/src/orchestration/Layers/ProviderRuntimeIngestion.ts

@@ -441,6 +441,9 @@ function runtimeEventToActivities(
             status: event.payload.status,
             ...(event.payload.summary ? { detail: truncateDetail(event.payload.summary) } : {}),
             ...(event.payload.usage !== undefined ? { usage: event.payload.usage } : {}),
+            ...(event.payload.durationMs !== undefined
+              ? { durationMs: event.payload.durationMs }
+              : {}),
           },
           turnId: toTurnId(event.turnId) ?? null,
           ...maybeSequence,