Make Google Maps package self-contained

[AdamEssenmacher]

Summary

• Convert Google Maps to a self-contained 9.2.0.9 package with the pinned 9.2.0 XCFramework and 190-file resource bundle.
• Remove consumer-time Xamarin.Build.Download usage while preserving the existing binding API, TFMs, minimum OS, native metadata, and resource mappings.
• Add package-structure and isolated offline-build validation to the path-filtered Google workflow.

Commits

1. Make Google Maps package self-contained
2. Add Maps self-contained package validation

Validation

• Shell syntax, workflow YAML parsing, Cake syntax, git diff check, and private-path/secret scans.
• Fresh hash-verified Cake pack from no existing Maps externals.
• Package structure: both XCFramework slices/architectures, native metadata, all 190 mappings/resources, target imports, and no XBD.
• Direct and transitive consumers: native symbol linkage, one root bundle, 190 byte-identical files, and no dynamic GoogleMaps.framework.
• Isolated proxy-blocked --no-restore build with unchanged NuGet state and empty XBD directory.
• All five Maps simulator runtime cases.
• Smoke packs for Places, GoogleAppMeasurement, Firebase Analytics, and SignIn, plus Places and SignIn consumer-shape checks.
• Package discovery tests for zero, symbol-only, and multiple candidates.

The general CI workflow and local baseline/generated artifacts are not included.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-08-29T21:54:58.987147Z	e29e373	PR opened

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