Show friendly switch actions and validate changes immediately

[enaboapps]

Summary

• replace raw enum and protocol values with sentence-case editor labels
• retain canonical values internally for JSON and protocol compatibility
• clear stale values when users change an action type
• show immediate row-level validation and require a dirty valid profile before Save is enabled

Why

The editor exposed implementation vocabulary and allowed incompatible values to survive action changes until Save.

Impact

Switch users see understandable actions such as Double left click and Play / pause, while existing profiles and Android protocol values remain unchanged.

Validation

• focused profile editor and round-trip tests: 20 passed
• Release build: passed with 0 warnings and 0 errors
• complete test suite: 513 unit tests and 1 integration test passed

Closes #472.