Merge remote-tracking branch 'origin/master' into fix/human-transcript-projection

# Conflicts:
#	docs/cordis-catalog/services.md
#	docs/core-data-structures/session.i18n.yaml
#	packages/host/apiproxy/README.i18n.yaml
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/ui/tui/src/index.ts

packages/ui/tui/src/index.ts

@@ -36,6 +36,7 @@ import type {} from '@deepseek-ai/dsh-llm-retry'
 import { renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 import {
   isReplacementSurfaceEvent,
+  lastActivityTime,
   SessionId,
   type SessionEvent,
   type UserMessage,
@@ -1008,7 +1009,7 @@ export function createTuiChat(
     const systemPrompt = displayText(renderPrompt(assembly)) || '(empty)'
     const registeredTools = assembly.tools.map(tool => displayText(tool.name)).join(', ') || '(none)'
     const events = agent.session.events
-    const latestActivity = events.at(-1)?.time ?? agent.session.header.createdAt
+    const latestActivity = lastActivityTime(events) ?? agent.session.header.createdAt
     const usedContext = Math.max(0, Math.round(ctx.tokenMeter.measure(agent.session).totalTokens))
     let context = `${formatDiagnosticNumber(usedContext)} used · capacity unknown`
     const contextWindow = modelController.contextWindow()