feat: update journal entry for September 16, 2025, with additional music release details

- Added a new entry for David Grubbs' "An Optimist Declines" including a YouTube link and notes on the track.
- Enhanced the existing entry for "Fluid Crystal" by including additional context and maintaining formatting consistency.

Author: codekiln

journals/2025_09_16.md

@@ -1,3 +1,6 @@
 ## Music
 	- [▶︎ Fluid Crystal | Chelsey Lee Trejo | Harmonic Ooze Records](https://harmonicoozerecords.bandcamp.com/album/fluid-crystal)
-		- algorithms?
+		- algorithms?
+	- [David Grubbs - An Optimist Declines - YouTube](https://www.youtube.com/watch?v=YnlJoPmbN9E)
+		- an optimist notes the dusk
+		- smoke edged with glass, backlit