docs: note who can create workstation release branches

[thomson-t]

Why

The release guide says both release workflows run on main and on workstation/* branches, but it does not say who can create a workstation branch or how changes reach one. Once this lands, the guide states that only the SDK team can create one, and that it then takes changes only through an approved pull request.

Programme

Standalone fix, no programme.

What changes

Before: the release guide named the branches the release environment admits, and nothing more about them.

After: the guide states both rules. The rule restricting branch creation to the SDK team was added on 14 October 2026; the pull-request rule already existed.

Start reading at the new sentence under "Release workflows", and check first that it matches the repository's branch rules. Deliberately left alone: the workflows themselves, and anything about main.

Linked work

None.

Rollout

Nothing reaches production behaviour; if this is wrong, revert the pull request.

Risks

• the sentence describes repository settings that live outside the code, so it can go stale if those settings change; not addressed; a reviewer would see it disagree with the repository's branch rules

Risk class: low.

Who

Written by: an automated coding agent (Claude Code), working for a maintainer who asked for this change.

Code reviewed before opening: an independent review agent, 14 October 2026; it checked the sentence against the live branch rules, found nothing blocking, and its wording suggestion is applied.

Design reviewed before opening: no one.

Decision this implements: a maintainer's request on 14 October 2026; there is no public record.

Checked: the repository's branch rules and release environment, read on 14 October 2026.

Not checked: nothing else; no code changes.

Size

Hand-written: 2 lines changed (added plus removed) in 1 file.

Generated: none.

🤖 Generated with Claude Code

[github-actions]

Kotlin migration progress

No change to the Java left to convert.

Module	Kotlin LOC	Java LOC	Java staying (facade)	Java left to convert	Kotlin share
android-core	3,249	22,594	9,650	12,944	12.6%
android-kit-base	601	5,405	1,651	3,754	10.0%
Total	3,850	27,999	11,301	16,698	12.1%

Conversion progress: 0.0% (16,698 of 16,550 baseline Java LOC left to convert). 132 Java files and 36 Kotlin files in scope.

[github-actions]

Binary compatibility

• ✅ android-core is compatible with 6.1.8 (115 classes compared, 0 with additions only).
• ✅ android-kit-base is compatible with 6.1.8 (44 classes compared, 2 with additions only).

Compares the release AAR against the same artifact at the last version published to Maven Central; R8-renamed classes and members are excluded (see the script docstring). Full japicmp HTML/XML reports are attached as the api-compat-reports workflow artifact. This check is not in the required-check set yet, so a red result here does not block merging.

[github-actions]

📦 SDK Size Impact Report

What the SDK adds to a minified release APK.

mParticle Core SDK

Measured against an empty baseline app. Unlike the Rokt kit, android-core ships no Compose and no resources, so there is nothing here that a host app would already provide.

Metric	Target branch	This PR	Change
APK size	120.30 KB	120.29 KB	-1 bytes
Download size	118.11 KB	118.11 KB	-1 bytes
Dex bytes	214.54 KB	214.54 KB	0 bytes

mParticle Core + Rokt kit

Measured against a Compose + Material3 reference app, so these are the costs on top of an app that already ships Compose. The reference app's dependencies are a documented convention, not a measured average: see size-report-rokt/README.md.

Metric	Target branch	This PR	Change
APK size	1.26 MB	1.26 MB	0 bytes
Download size	1.24 MB	1.24 MB	-4 bytes
Dex bytes	2.23 MB	2.23 MB	0 bytes

Rokt SDK+ umbrella (adds the payment extension)

Metric	Target branch	This PR	Change	On top of mParticle Core + Rokt kit
APK size	6.55 MB	6.55 MB	0 bytes	+5.29 MB
Download size	6.43 MB	6.43 MB	0 bytes	+5.19 MB
Dex bytes	7.11 MB	7.11 MB	0 bytes	+4.88 MB

➡️ SDK size impact change is minimal.

Raw measurements

core, Target branch:

{"baseline_dex_bytes": 0, "baseline_download_bytes": 2513, "baseline_install_bytes": 7529, "core_dex_bytes": 219692, "core_download_bytes": 123460, "core_install_bytes": 130712}

core, This PR:

{"baseline_dex_bytes": 0, "baseline_download_bytes": 2509, "baseline_install_bytes": 7526, "core_dex_bytes": 219692, "core_download_bytes": 123455, "core_install_bytes": 130708}

rokt, Target branch:

{"baseline_dex_bytes": 1829108, "baseline_download_bytes": 1240062, "baseline_install_bytes": 1300934, "kit_dex_bytes": 4163396, "kit_download_bytes": 2544133, "kit_install_bytes": 2623275, "sdkplus_dex_bytes": 9284332, "sdkplus_download_bytes": 7981260, "sdkplus_install_bytes": 8165359}

rokt, This PR:

{"baseline_dex_bytes": 1829108, "baseline_download_bytes": 1240062, "baseline_install_bytes": 1300934, "kit_dex_bytes": 4163396, "kit_download_bytes": 2544129, "kit_install_bytes": 2623275, "sdkplus_dex_bytes": 9284332, "sdkplus_download_bytes": 7981260, "sdkplus_install_bytes": 8165359}

_{Measured 43096be merged into 998eb29}