Merge main into workstation/swift-migration

[thomson-t]

Summary

• Merges main into workstation/swift-migration to bring the workstation branch up to date with the latest mainline changes.
• Includes 2 commits from main:
  • feat: accept native GoDaddy R1 certificate chains (#879)
  • chore: Release v9.4.1 (#881)

Test plan

• Verify CI passes on this PR
• Confirm no merge conflicts with ongoing Swift migration work
• Spot-check certificate pinning changes from feat: accept native GoDaddy R1 certificate chains #879 if relevant to migration testing

Made with Cursor

[github-actions]

🐦 Swift Migration Progress

Production implementation code at 9e7d9ecb8c88 compared with a16b1e84e8df.

Area	Goal	Progress	Base	This PR	Swift SLOC	Objective-C remaining	Change
Core SDK	Short term — in scope	███▌░░░░░░	35.43%	35.42%	5,070	9,243	↩️ -0.01 pp
Core SDK	Long term — all Objective-C	██▌░░░░░░░	25.14%	25.13%	5,070	15,103	↩️ -0.01 pp
SDK kit infrastructure	Short term — in scope	░░░░░░░░░░	0.00%	0.00%	0	3,340	➖ 0.00 pp
SDK kit infrastructure	Long term — all Objective-C	░░░░░░░░░░	0.00%	0.00%	0	3,725	➖ 0.00 pp
Standalone kits	Short term — in scope	▏░░░░░░░░░	1.06%	1.06%	152	14,231	➖ 0.00 pp
Standalone kits	Long term — all Objective-C	▏░░░░░░░░░	1.06%	1.06%	152	14,231	➖ 0.00 pp

Objective-C retained by design: Core SDK 5,860 · SDK kit infrastructure 385 · Standalone kits 0.

This PR's code movement

Area	Swift lines added	Objective-C lines removed
Core SDK	0	4
SDK kit infrastructure	0	0
Standalone kits	1	3

How this is measured

• Current composition uses production source lines of code (SLOC) from cloc; comments and blank lines are excluded.
• Short term — in scope excludes the Objective-C the migration will not delete, so 100% is the end of this project: every in-scope implementation gone.
• Long term — all Objective-C keeps the full denominator. Reaching 100% there means the public API itself becomes Swift, which is a breaking change reserved for a future major release.
• The gap between the two rows is the retained public/kit contract, runtime-identity, and boundary-glue surface listed in Tools/swift-migration-retained-objc.txt.
• Retained wrappers keep their Objective-C interface but still shed logic to Swift. That thinning moves the long-term row and the retained figure, not the short-term row.
• Both revisions are measured with the manifest from the head revision, so a manifest edit does not by itself move the reported change. A retained file this pull request renamed or deleted still counts as retained at the base.
• Pull request movement uses physical additions/deletions from git diff base...head --numstat; it counts retained files too and is intentionally separate from SLOC totals.
• Core excludes SDK kit infrastructure and vendored libraries. Standalone kits include only files below Kits/**/Sources.
• Tests, examples, headers, build outputs, vendored libraries, and the MParticle/Sources Swift overlay are excluded.
• Objective-C++ (.mm) is included in the Objective-C figures and removed counts.

Generated with cloc 2.10. This report is informational and does not gate migration direction.

[github-actions]

📦 SDK Size Impact Report

Measures how much the SDK adds to an app's size (with-SDK minus without-SDK).

Metric	Target Branch	This PR	Change
App Bundle Impact	2.12 MB	2.12 MB	+N/A
Executable Impact	848 bytes	848 bytes	+N/A
XCFramework Size	6.72 MB	6.72 MB	+N/A

➡️ SDK size impact change is minimal.

Raw measurements

Target branch (workstation/swift-migration):

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":2256,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":2172,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6880}

This PR:

{"baseline_app_size_kb":84,"baseline_executable_size_bytes":75464,"with_sdk_app_size_kb":2256,"with_sdk_executable_size_bytes":76312,"sdk_impact_kb":2172,"sdk_executable_impact_bytes":848,"xcframework_size_kb":6880}