iOS/iPadOS device vitals: expose in GET host API response

[nulmete]

Related issue: Resolves #49985

Exposes the the 29 iOS/iPadOS device vitals fields in GET /hosts/:id and GET /hosts/identifier/:identifier for iOS/iPadOS hosts.

Checklist for submitter

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
  See Changes files for more information.

Will be added in feature branch.

Testing

• Added/updated automated tests

• QA'd all new/changed functionality manually

Summary by CodeRabbit

• New Features

  • Host details for iOS and iPadOS devices now include available Apple MDM device vitals and service subscription information.
  • Vitals are shown only when present, while unsupported platforms and missing data remain omitted.
  • Added support for nested accessibility, organization, MDM options, and attestation details in host responses.

• Bug Fixes

  • Improved handling of hosts without stored Apple MDM vitals, avoiding errors and incomplete responses.

• Tests

  • Added coverage for complete, partial, and missing vitals data across host detail endpoints.

[nulmete]

@coderabbitai full review

[coderabbitai]

✅ Action performed

Full review finished.

[coderabbitai]

Walkthrough

Adds Apple MDM device-vitals fields to fleet.Host, loads persisted vitals and service subscriptions from MySQL for iOS/iPadOS hosts, and wires loading into host detail responses. JSON fields are conditionally unmarshaled and omitted when unavailable. The datastore interface and mock are extended, while unit and integration tests cover complete, partial, missing-row, platform-gated, and identifier-based responses.

Possibly related issues

• #39281: Implements the backend host API loading and platform-gated exposure of iOS/iPadOS vitals described by this issue.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	⚠️ Warning	The description explains the user-visible change and testing, but the required changes file is not yet added and several applicable checklist items are missing.	Add the required changes file and complete or remove the applicable checklist sections, including validation, compatibility, isolation testing, and QA details.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The changes satisfy #49985 by adding the 29 fields, loading side-table data, omitting values for non-iOS hosts, and covering both host endpoints.
Out of Scope Changes check	✅ Passed	The diff stays focused on iOS/iPadOS vitals exposure, datastore loading, and supporting tests and mocks, with no clear unrelated additions.
Title check	✅ Passed	The title clearly identifies exposing iOS/iPadOS device vitals in GET host API responses.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 49985-ios-ipados-vitals-host-api

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[codecov]

Codecov Report

❌ Patch coverage is 82.79570% with 16 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (49984-ios-ipados-vitals@f9a18ff). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
server/datastore/mysql/apple_mdm_device_vitals.go	78.57%	7 Missing and 5 partials ⚠️
server/fleet/mdm_apple_device_vitals.go	94.11%	1 Missing and 1 partial ⚠️
server/service/hosts.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@                    Coverage Diff                     @@
##             49984-ios-ipados-vitals   #50082   +/-   ##
==========================================================
  Coverage                           ?   68.11%           
==========================================================
  Files                              ?     3940           
  Lines                              ?   251157           
  Branches                           ?    13277           
==========================================================
  Hits                               ?   171083           
  Misses                             ?    64732           
  Partials                           ?    15342           

Flag	Coverage Δ
backend	69.45% <82.79%> (?)

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