Terminal oscilloscope with CRT phosphor physics

- CRT boot/shutdown animations (ported from AetherTune)
- Y-T (time-domain) and X-Y (Lissajous) display modes
- Phosphor persistence with bloom and decay
- Half-block rendering for 2x vertical resolution
- Live audio capture via ffmpeg/PulseAudio monitor
- Gain and time/div controls, grid toggle, freeze

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CRT.nimble

@@ -0,0 +1,13 @@
+# Package
+
+version       = "0.1.0"
+author        = "rolandnsharp"
+description   = "CRT TV turn on/off effects in the terminal"
+license       = "MIT"
+srcDir        = "src"
+bin           = @["crt"]
+
+# Dependencies
+
+requires "nim >= 2.2.8"
+requires "illwill >= 0.4.1"