Fix ScreenAdapter.scalePoints, update docs/typo, and add ResultBox tests

[Autfy]

Motivation

• ScreenAdapter.scalePoints previously used a broken indexing approach that only populated the first element, causing incorrect point scaling results.
• A small typo in the demo header and an unclear AppScope docstring should be fixed for clarity.
• Add unit tests to cover ResultBox behavior to prevent regressions around latch release and blocking reads.

Description

• Replace the hand-rolled loop in ScreenAdapter.scalePoints with an idiomatic mapping implementation using points.map { ... }.toTypedArray() to correctly scale every point.
• Correct the comment header typo from actoins to actions in app/src/main/java/.../actoins.kt.
• Clarify the AppScope KDoc by noting that an empty pageName means any page in accessibility-api/src/main/java/.../AppScope.kt.
• Add ResultBoxTest with two unit tests in accessibility-api/src/test/java/.../ResultBoxTest.kt covering latch release (setAndNotify) and blockedGet behavior.

Testing

• Added unit tests: ResultBoxTest containing setAndNotify_releasesLatchAndReturnsValue and blockedGet_returnsValueWithoutThrowingWhenAlreadySet, but the test suite was not executed in this change.
• No automated test run was performed as part of this PR; tests were committed for CI or local execution.

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Codex Task