docs: align SwiftUI availability and license notes

[gaelic-ghost]

Summary

• document the ASBSwiftUI OS availability strategy for future OS 27-specific SwiftUI adoption
• simplify commercial-use wording across live docs
• rename the historical Apache license file to match socket

Verification

• bash scripts/repo-maintenance/validate-all.sh
• git diff --check

Summary by CodeRabbit

Release Notes

• Documentation
  • Updated commercial use licensing terms and provided guidance for inquiries across documentation
  • Clarified that earlier versions remain available under their previously applicable license terms
  • Added OS availability strategy documentation for maintaining stable public interfaces across macOS versions

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 5a7e0b85-4327-46d1-b6c9-f0632387f6b0

📥 Commits

Reviewing files that changed from the base of the PR and between aa737f1 and fee7f37.

📒 Files selected for processing (7)

• COMMERCIAL-USE.md
• CONTRIBUTING.md
• LICENSE-HISTORICAL-APACHE-2.0
• NOTICE
• README.md
• ROADMAP.md
• docs/maintainers/presentation-ui-targets-plan.md

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📝 Walkthrough

Walkthrough

Updates commercial-use licensing language across COMMERCIAL-USE.md, CONTRIBUTING.md, NOTICE, README.md, and ROADMAP.md to redirect readers to a central COMMERCIAL-USE.md document. Also adds a new OS Availability Strategy subsection and a Slice 5 checklist item to the maintainer presentation-UI targets plan.

Changes

Commercial Licensing Documentation Updates

Layer / File(s)	Summary
COMMERCIAL-USE.md rewrite COMMERCIAL-USE.md	Replaces the prior combined license text with an explicit statement that commercial use requires separate written terms, reformats the Required Notice into a fenced text block, and retains the historical Apache license note.
Cross-file references updated to COMMERCIAL-USE.md CONTRIBUTING.md, NOTICE, README.md, ROADMAP.md	Removes inline commercial-contact wording from four files and redirects readers to COMMERCIAL-USE.md for the current policy and contact path. README.md and NOTICE also add a sentence clarifying that pre-PolyForm Noncommercial versions remain under their original license terms, referencing LICENSE-HISTORICAL-APACHE-2.0.

ASBSwiftUI OS Availability Strategy Documentation

Layer / File(s)

Summary

OS availability strategy section and Slice 5 checklist item docs/maintainers/presentation-ui-targets-plan.md

Adds a new "OS Availability Strategy" subsection specifying how ASBSwiftUI should isolate macOS 27-only SwiftUI into availability islands, constrain if #available``/@available to renderer/style/adapter/modifier layers, prohibit OS-version branches in `ASBPresentation` snapshots or intents, and provides a suggested `Sources/ASBSwiftUI/` file layout. Inserts a Slice 5 checklist item requiring the availability file structure be established before adopting OS 27-specific APIs.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~4 minutes

Poem

A rabbit hops through legal text with care,
One file to rule the commercial affairs! 🐇
The docs all point to COMMERCIAL-USE,
No scattered emails left to confuse.
And SwiftUI islands, neatly planned—
OS 27 kept well in hand. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title partially relates to the changeset. While the PR includes documentation updates about licensing and SwiftUI availability, the title 'align SwiftUI availability and license notes' covers only two of the three main objectives, and 'align' is somewhat vague about the specific nature of the changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/swiftui-availability-license-cleanup

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