Merge PR #941 dependency into manual compaction stack

# 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/components/dialogs.ts

@@ -23,6 +23,7 @@ import {
   type AgentLlmTarget,
 } from '@deepseek-ai/dsh-agent'
 import type { LlmModelInfo, LlmModelReasoningInfo, ReasoningEffortId } from '@deepseek-ai/dsh-llm'
+import { lastActivityTime } from '@deepseek-ai/dsh-session'
 import type { SessionId } from '@deepseek-ai/dsh-session'
 import { foldGoal, type GoalPhase } from '@deepseek-ai/dsh-goal'
 import { foldSessionTitle } from '@deepseek-ai/dsh-session-title'
@@ -512,7 +513,8 @@ export function summarizeResumeCandidate(
   return {
     record,
     title,
-    lastActivityAt: snapshot.events.at(-1)?.time ?? snapshot.session.createdAt,
+    // Excludes a prior pickup's boundary, or every browsed session floats up.
+    lastActivityAt: lastActivityTime(snapshot.events) ?? snapshot.session.createdAt,
     lastTurn: resumeTurnLabel(snapshot),
     currentWorkspace: record.header.cwd === cwd,
     workspaceLabel: formatWorkspace(record.header.cwd),

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()

packages/ui/tui/tests/snapshots/status-diagnostics-narrow.expected.txt

@@ -48,7 +48,7 @@ buffer
 17| "│                                                      │"
   style 0-0 dim
   style 55-55 dim
-18| "│  Agent:      idle · 7 events · 1 turn · 1 step · 1   │"
+18| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1   │"
   style 0-0 dim
   style 3-12 dim
   style 55-55 dim

packages/ui/tui/tests/snapshots/status-diagnostics.expected.txt

@@ -45,7 +45,7 @@ buffer
 16| "│                                                                                │"
   style 0-0 dim
   style 81-81 dim
-17| "│  Agent:      idle · 7 events · 1 turn · 1 step · 1 tool call                   │"
+17| "│  Agent:      idle · 8 events · 1 turn · 1 step · 1 tool call                   │"
   style 0-0 dim
   style 3-12 dim
   style 81-81 dim

packages/ui/tui/tests/tui.snapshot.ts

@@ -878,6 +878,9 @@ describe('TUI terminal-state snapshots', () => {
         { type: 'step/end', seq: 5, time: Date.parse(`${day}T00:00:06Z`), data: { turn: 1, step: 1 } },
         { type: 'turn/end', seq: 6, time: Date.parse(`${day}T00:00:07Z`), data: { turn: 1, reason: { kind: 'completed' } } },
         { type: 'session/title', seq: 7, time: Date.parse(`${day}T00:00:08Z`), data: { title, messageSeqs: [1], source: { kind: 'fallback' } } },
+        // A prior pickup, dated well after the work: the picker must still
+        // show the work's date, not the pickup's.
+        { type: 'session/end-seed', seq: 8, time: Date.parse('2026-07-23T07:59:00.000Z'), data: {} },
       ],
     })
     const harness = await setupSnapshot({
@@ -947,6 +950,12 @@ describe('TUI terminal-state snapshots', () => {
           messageSeqs: [1],
           source: { kind: 'fallback' },
         })
+        // Renders over a boundary-bearing log. It cannot pin the exclusion:
+        // `/status` appends its own `command/run` first, so the boundary is
+        // never the tail here. The other two call sites pin it.
+        dateNow.mockReturnValue(Date.parse('2026-07-22T10:10:11.000Z'))
+        session.append('session/end-seed', {})
+        dateNow.mockReturnValue(Date.parse('2026-07-22T09:10:11.000Z'))
       },
     }, { columns: 92, rows: 32 })
     await renderAfter(harness, () => {