docs: put what readers come for at the top of six heavily skimmed pages

[devGregA]

Summary

Six docs pages lose half of their desktop readers early, based on the last 30 days of visitor heatmaps. This PR puts the tasks those readers come for near the top. Every change adds text or moves existing sections. Nothing is deleted and no facts change. Only the English files are edited. Translations are regenerated after the English is approved.

Introduction to Findings (triage_findings/findings_workflows/intro_to_findings.md)
Half of readers leave before 22% of the page. Of the sections further down, Example Finding Workflows got the most reading time, and the Notes section above it got the least. Added a short opener that links to triage statuses, Risk Acceptances and Creating Findings Manually. Moved Example Finding Workflows above Notes and @mentions.

Assets, Open Source (asset_modelling/engagements_tests/OS__assets.md)
Half of readers leave before 17%, and about 60% of reading time lands on the overview and examples. Asset Boundaries is the most clicked table of contents entry. Added a short opener that says what an Asset is and links to the scoping and create sections. Moved Asset Boundaries up next to Asset Examples so the scoping guidance sits in one place.

About DefectDojo (get_started/about/about_defectdojo.md)
Half of readers leave before 25%. The most clicked items on the page are the demo password, the demo links and the Installation and Feature comparison links in the sidebar. Added a short opener linking to the online demos, the Open-Source and Pro install guides, and the feature comparison. Moved Online Demos up so it follows What is DefectDojo.

Asset Hierarchy: Overview, Open Source (asset_modelling/OS_hierarchy/OS__asset_hierarchy.md)
Half of readers leave before 32%. Most rage clicks land on the "What can an Organization/Asset represent?" text. Added a two paragraph summary of the five levels, restating what the page already says about each one and about access control and deduplication scope. It links to the three "What can ... represent?" sections.

Reimport (import_data/import_intro/reimport.md)
Half of readers leave before 27%. Clicks cluster on the paragraph about ignoring existing Findings, the close and reactivate settings, and the Reimport Deduplication paragraph near the bottom. Added a short opener naming the four Reimport outcomes, with links to Reimport Logic, Reimport Deduplication and Opening the Reimport form. Moved Reimport Deduplication to directly after Reimport Logic. In the moved paragraph, a pair of em dashes became parentheses.

Pro Kubernetes / Helm install guide (get_started/pro/onprem/kubernetes/installing_on_kubernetes.md)
This page is about 72 screens long. 21% of visits scroll back and forth four or more times, and the median scroll depth is 11%. Clicks go to the global.imageRegistry values, the license-to-registry login pipeline, helm registry login and the private registry paragraph. Added a Quick Path ordered list near the top that links to the existing install sections in order. It also links to registry login, private registry mirroring, known issues and troubleshooting. No sections were moved. This page is generated from the DefectDojo Pro Helm chart repository, so the same Quick Path has to go into that repository's docs/INSTALLATION_GUIDE.md. Otherwise the next sync overwrites it.

🤖 Generated with Claude Code

[github-actions]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[github-actions]

Conflicts have been resolved. A maintainer will review the pull request shortly.