feat: add iOS device perf sampling

[thymikee]

Summary

Add physical iOS CPU and memory sampling to perf.

How it works:

• session-perf keeps one cross-platform response shape and routes Apple sampling through the active session bundle ID.
• macOS and iOS simulators keep the existing process-snapshot path based on host ps / simctl spawn ps.
• Physical iOS devices now:
  1. resolve the installed app bundle URL with xcrun devicectl device info apps
  2. resolve the live process list with xcrun devicectl device info processes
  3. record two short xcrun xctrace record --template "Activity Monitor" captures
  4. export the activity-monitor-process-live table
  5. filter rows to the target app PID set, collapse duplicate rows per PID, derive CPU from cumulative CPU-time deltas, and report resident memory from the latest sample
• Startup timing remains the open round-trip metric already exposed by perf.

Validation

pnpm format
pnpm check:quick
pnpm check:unit
pnpm clean:daemon
node --experimental-strip-types src/bin.ts --session adr-ios-pr-clean open AgentDeviceRunner --platform ios --device "thymikee-iphone"
node --experimental-strip-types src/bin.ts --session adr-ios-pr-clean appstate
node --experimental-strip-types src/bin.ts --session adr-ios-pr-clean perf
node --experimental-strip-types src/bin.ts --session adr-ios-pr-clean close

[github-actions]

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Aggregate only latest sample per PID before summing metrics

summarizeIosDevicePerfSnapshot currently sums every matched row’s cpuTimeNs and residentMemoryBytes, but activity-monitor-process-live exports can include multiple rows for the same process within one capture (e.g., multiple timestamps or ref rows), so this double-counts cumulative CPU time and resident memory and can significantly over-report both metrics. This affects any device run where xctrace emits more than one row per PID; the snapshot should collapse to one row per PID (typically latest/max) before aggregation.

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