✨ feat: color frames, derive grayscale frames at render time

.env.example

@@ -26,6 +26,8 @@ CHARSET=blocks
 BRIGHTNESS_THRESHOLD=40
 # Invert the brightness ramp (for light terminal backgrounds).
 INVERT=false
+# Always render grayscale, even for clients that support color.
+FORCE_GRAYSCALE=false
 
 # Max rendered width/height in characters.
 MAX_DIMENSION=1080
@@ -39,7 +41,7 @@ MAX_TOTAL_CONNECTIONS=1000
 # (Empty password counts as an attempt.)
 MAX_AUTH_ATTEMPTS=3
 # SSH handshake deadline in ms (0 to disable).
-HANDSHAKE_TIMEOUT=10000
+HANDSHAKE_TIMEOUT=30000
 
 # Log attempted usernames/passwords.
 LOG_CREDENTIALS=true