Add Android support scaffolding

[rchybicki]

Adds Android mobile support scaffolding and docs.

• Adds Tauri Android scaffold under src-tauri/gen/android (with gitignore excluding build artifacts)
• Adds scripts to init/build/dev/run/install Android artifacts
• Sets Android to remote backend mode by default (matching iOS)
• Updates settings copy and README to reference mobile (iOS/Android)
• Adds Android-ish user agent test for mobile detection

[Dimillian]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 0f5553ac9c

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[chatgpt-codex-connector]

Source Android env before checking adb

install_android_apk.sh checks for adb immediately, but unlike the other new Android scripts it never sources scripts/android_env.sh or calls ensure_android_env(). In environments where adb is only available under a standard SDK path (for example ~/Library/Android/sdk/platform-tools) and not already on PATH, this script exits with "adb is not available" even though the same repo’s Android build/dev scripts work, so install/launch is broken for a common setup.

Useful? React with 👍 / 👎.

[rchybicki]

Closing: opened unintentionally. Keeping branch on fork.

[rchybicki]

sorry, this is not PR worthy yet, codex was overeager to push a PR I didn't ask for. I am using it as of today though on the galaxy fold 7, and it is working great! thanks Dimillian