feat(os): surface reset boot_mode via smp 4.1.0

[JPHutchins]

Summary

Resolves #112 — expose the MCUmgr boot_mode field on smpclient's OS reset so a client can request a reboot into the bootloader (MCUboot serial recovery), not just a normal reboot.

The resolution is essentially "bump the lock" as noted on the issue: smp 4.1.0 (JPHutchins/smp#58) adds the optional boot_mode field to ResetWriteRequest. Since smpclient.requests.os_management.ResetWrite subclasses smpos.ResetWriteRequest, the field is surfaced automatically — no wrapper changes needed.

Changes

• Bump smp floor >=4.0.2 → >=4.1.0 (and the doc group >=4.0.0 → >=4.1.0 for consistency); relock smp to 4.1.0.
• Add parity test cases to tests/test_requests.py confirming ResetWrite(boot_mode=...) serializes identically to smp's ResetWriteRequest, for both the BootMode.BOOTLOADER enum and a combined force=1, boot_mode=1 (int) request.

Usage

from smp.os_management import BootMode
from smpclient.requests.os_management import ResetWrite

await client.request(ResetWrite(boot_mode=BootMode.BOOTLOADER))  # reboot into serial recovery

Consumers import BootMode from smp.os_management directly, matching the existing convention (smpclient does not re-export smp enums).

Verification

ruff format, ruff check, pydoclint, and mypy all clean; full test suite passes (os_management.py at 100% coverage).

Dependency chain

• ✅ smp (protocol): os_management: add boot_mode field to ResetWriteRequest (reboot to bootloader) JPHutchins/smp#58 — released in 4.1.0
• 👉 smpclient (this PR): surface boot_mode on reset
• ⏭️ smpmgr (CLI): os reset: add boot_mode (enter MCUboot serial recovery) smpmgr#100 — os reset --boot-mode

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR updates smpclient to depend on smp>=4.1.0 so that the upstream ResetWriteRequest.boot_mode field (added in smp 4.1.0) is automatically surfaced on smpclient’s ResetWrite request, enabling reboot-to-bootloader / serial recovery via OS reset.

Changes:

• Bump smp minimum version from >=4.0.2 to >=4.1.0 (including the doc dependency group) and relock uv.lock to smp 4.1.0.
• Add request-parity tests asserting ResetWrite(boot_mode=...) serializes identically to smp’s ResetWriteRequest, including enum and integer forms.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
uv.lock	Relocks dependencies to smp==4.1.0 and updates the recorded version constraints.
pyproject.toml	Raises the smp floor to >=4.1.0 in runtime deps and in the doc dependency group.
tests/test_requests.py	Adds parity cases covering boot_mode serialization for OS reset requests.

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