docs: add internal branch workflow notes

[aommm]

Test PR — illustrating internal workflow

This PR demonstrates the typical day-to-day workflow for the MAPAPA team on this fork.

What this PR does

Adds INTERNAL.md — an internal-only doc describing the branch strategy. This file lives on master-rf and would never be included in an upstream PR to Azure/Azure-Sentinel.

Workflow illustrated

• Branched from master-rf → rf/test-pr-workflow
• Made a change
• Opened PR back into master-rf

AI generated

[aommm]

/open-upstream-pr

[aommm]

/open-upstream-pr

[github-actions]

/open-upstream-pr failed — cherry-pick conflict.

Please run the script locally to resolve:

./rf-scripts/open-upstream-pr.sh

[aommm]

/open-upstream-pr

[github-actions]

/open-upstream-pr succeeded. 🚀

Upstream branch: feat/test-pr-workflow
Open PR towards Microsoft

Cherry-picked commits:

1cefa8b305 docs: add internal branch workflow notes
Switched to a new branch 'feat/test-pr-workflow'
branch 'feat/test-pr-workflow' set up to track 'origin/master'.
[feat/test-pr-workflow 83215668af] docs: add internal branch workflow notes
 Author: Niklas Logren <niklas@niklaslogren.com>
 Date: Tue May 26 11:00:34 2026 +0200
 1 file changed, 38 insertions(+)
 create mode 100644 INTERNAL.md

[aommm]

/open-upstream-pr

[github-actions]

/open-upstream-pr succeeded. 🚀

Upstream branch: feat/test-pr-workflow
Open PR towards Microsoft

Cherry-picked commits:

1cefa8b305 docs: add internal branch workflow notes
Switched to a new branch 'feat/test-pr-workflow'
branch 'feat/test-pr-workflow' set up to track 'origin/master'.
[feat/test-pr-workflow 85ba32420a] docs: add internal branch workflow notes
 Author: Niklas Logren <niklas@niklaslogren.com>
 Date: Tue May 26 11:00:34 2026 +0200
 1 file changed, 38 insertions(+)
 create mode 100644 INTERNAL.md

[aommm]

/upstream-pr

[aommm]

/upstream-pr

[github-actions]

/upstream-pr failed — cherry-pick conflict.

Please run the script locally to resolve:

./rf-scripts/upstream-pr.sh

[aommm]

/upstream-pr

[github-actions]

/upstream-pr failed — cherry-pick conflict.

Please run the script locally to resolve:

./rf-scripts/upstream-pr.sh

[aommm]

/upstream-pr

[github-actions]

/upstream-pr failed — cherry-pick conflict.

Please run the script locally to resolve:

./rf-scripts/upstream-pr.sh

[aommm]

/upstream-pr

[github-actions]

/upstream-pr succeeded. 🚀

Upstream branch: feat/test-pr-workflow
Next steps: Open PR towards Microsoft

Cherry-picked commits:

• 1cefa8b docs: add internal branch workflow notes

[aommm]

/upstream-pr

[github-actions]

/upstream-pr succeeded. 🚀

Upstream branch: feat/test-pr-workflow
Next steps: Open PR towards Microsoft

Cherry-picked commits:

• 1cefa8b docs: add internal branch workflow notes