fix(drivers): bundle sungrow 1.6.0, read once a second

[frahlg]

Problem and result

Bundle sungrow 1.6.0 from srcfl/device-drivers#179 so the next beta reads the
Sungrow site meter once a second. #1616, now on master, makes Core
honour the interval a driver returns from driver_poll; this moves the pin
to the merged commit that uses it.

The pin moves from c9de251 to afc9739 (srcfl/device-drivers#179). The only bundled driver that changes:

Driver	Before	After
sungrow	1.5.10, every 5 s	1.6.0: power, SoC, per-phase values and EMS readback every second; counters, temperature, frequency and fault bits every 5 s

The only other commit between the pins is srcfl/device-drivers#168, which
changes tests, not drivers.

Scope and safety

• sungrow 1.6.0 carries counters and other slow values between full reads,
  and only on a poll whose own power read succeeded, so FTW's energy ledger
  does not start over and nothing outlives the device.
• Two tests in sungrow_driver_test.go polled back to back and expected the
  running state on every poll. sungrow 1.6.0 reads it on a full read every
  5 s, timed by host.millis, so the tests now move the driver's clock 5 s
  before each poll. In real time a fault clears at the next full read, within
  5 s, as it did when every poll was 5 s apart.
• sdm630 and pixii_pv are unchanged here. With fix(drivers): honour the interval driver_poll returns #1616 they already run at the
  1 s their drivers return; the owner accepted that.

Overlap: two open drafts also move this pin. #1537 pins an
unmerged commit of srcfl/device-drivers#172; once #172 merges, its pin goes
to a main commit after afc9739 and takes this change with it.
#1449 pins eeb3e06, which is older than the current pin. Neither
can be rebased onto here, so the second one to merge resolves one line.

Verification

• Hardware: sungrow 1.6.0 ran at 1 s on the home box for 30 minutes on
  14 Oct: 19,040 Modbus reads, none failed, median 2 ms per read, meter value
  new every 1020 ms. Details in feat(sungrow): read live values once a second (1.6.0) device-drivers#179.
• scripts/sync-bundled-drivers.sh at the new pin, then make verify on
  this branch, based on master after fix(drivers): honour the interval driver_poll returns #1616: green.

Checklist

• The change follows VISION.md and one selected scope.
• I checked overlapping PRs and coordinated shared files/contracts.
• Relevant checks cover the changed behaviour and failure paths.
• A human reviewed changed UI in a browser, or no UI changed. No UI changed.
• A Changeset is included, or the change is exempt. Patch.
• Every commit has a DCO sign-off.

🤖 Generated with Claude Code

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Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-14T06:23:28.396190Z	2cfe81d	PR opened

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