fix(mobile): paginate agent sessions list and clear the tab bar overlay

[iscekic]

Problem

Reported: "it won't let me scroll down to view past CLI sessions". Two separate causes:

1. Last rows hidden under the tab bar. The tab bar is an absolutely-positioned translucent overlay, and the sessions SectionList had no bottom content padding — every other scrollable screen pads by getTabBarOverlayHeight, this one only did so for its empty state. Scrolling to the end left the final rows underneath the tab bar and the list bounced back.

2. Sessions older than 5 days were never loaded. useStoredSessions hardcoded updatedSince to 5 days ago with no pagination, so older sessions weren't below the fold — they weren't fetched at all (the "Older" date bucket was unreachable).

Fix

• Pad the SectionList content by the tab bar overlay height.
• Switch stored sessions to cursor-based infinite pagination via useInfiniteQuery — the cliSessionsV2.list procedure already supports cursor/nextCursor, so no backend changes. 30 sessions per page, loaded on onEndReached with a footer spinner, deduped by session_id across pages (a session updated mid-paging can repeat since the cursor is updated_at).
• Dropped the now-unused liveStoredSessions/offlineSessions fields from the hook (no consumers).

Testing

pnpm format && pnpm typecheck && pnpm lint && pnpm check:unused clean; pnpm test 360/360 passing.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

The prior search-pagination gap was resolved by switching session search to the server-side cliSessionsV2.search endpoint, which covers full history independent of loaded pages; no new issues found in the incremental changes.

Files Reviewed (2 files)

• apps/mobile/src/components/agents/session-list-screen.tsx
• apps/mobile/src/lib/hooks/use-agent-sessions.ts

Previous Review Summary (commit 9df7c0d)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 9df7c0d)

Status: 1 Issue Found | Recommendation: Address before merge

Executive Summary

Switching stored-sessions to cursor pagination means client-side search only sees currently-loaded pages, with no mechanism to auto-fetch more while searching.

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/mobile/src/lib/hooks/use-agent-sessions.ts	58	Search filters only already-loaded pages; nothing triggers fetchNextPage on search, and a sparse filtered list may never reach onEndReached

Files Reviewed (3 files)

• apps/mobile/src/components/agents/session-list-content.tsx - 0 issues
• apps/mobile/src/components/agents/session-list-screen.tsx - 0 issues
• apps/mobile/src/lib/hooks/use-agent-sessions.ts - 1 issue

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_{Reviewed by claude-sonnet-5-20260630 · Input: 42 · Output: 8.5K · Cached: 1.2M}

_{Review guidance: REVIEW.md from base branch main}