Crash detection, fullscreen HD navigation, and composable counting

[ignaciotcrespo]

Summary

• Crash detection: When a preview crashes on the device, the root cause exception is extracted from logcat and displayed in the preview panel instead of a broken screenshot
• Fullscreen HD navigation: f key enters fullscreen mode with ↑/↓ navigation between previews — cached screenshots show instantly, uncached ones are captured on the fly
• Composable counting: Each module shows the total @Composable function count, and the CLI reports composable count when no @Preview functions are found
• Faster launch: Uses am start -W to wait for Activity display instead of a fixed delay
• New CLI flags: --clear (clear screenshot cache), --dismiss-dialog (dismiss compatibility dialog), --delay (configurable render wait, default 1s)

Test plan

• Run a preview that crashes — verify root cause error appears in the preview panel with word wrap
• Press f for fullscreen, navigate with ↑/↓ — cached previews show instantly, uncached ones capture and display
• Press any non-arrow key in fullscreen to return to TUI
• Verify composable count appears below module names in the modules panel
• Run compose-preview on a project with composables but no previews — verify the composable count message
• Test --clear flag clears the screenshot cache
• Test --delay 3 changes the capture wait time
• Verify f fullscreen HD appears in the help bar

🤖 Generated with Claude Code