Remove Final from constants in src/ files.

src/morse_engine.py

 import time
-from typing import Final
 
 from src import morse_code
 from .abstract import LEDController, TouchSensor, ProximitySensor
 
 # Constants (Keep same or tests will break)
-THRESHOLD: Final[int] = 75
-UNIT_TIME: Final[float] = 0.24
+THRESHOLD: int = 75
+UNIT_TIME: float = 0.24
 
-RED   : Final[tuple[int, int, int]] = (255, 0,   0)
-YELLOW: Final[tuple[int, int, int]] = (220, 160, 0)
-GREEN : Final[tuple[int, int, int]] = (0,   255, 0)
+RED   : tuple[int, int, int] = (255, 0,   0)
+YELLOW: tuple[int, int, int] = (220, 160, 0)
+GREEN : tuple[int, int, int] = (0,   255, 0)
 
 # Legacy ham radio license requirement
 # - 0.24 sec unit time (5 words per minute)

src/prox_pulse.py

@@ -2,10 +2,10 @@ import time
 from .pulse import pulse
 from .abstract import LEDController, ProximitySensor
 
-THRESHOLD = 75
+THRESHOLD: int = 75
 
-RED = (150, 10, 10)
-GREEN = (30, 100, 10)
+RED: tuple[int, int, int] = (150, 10, 10)
+GREEN: tuple[int, int, int] = (30, 100, 10)
 
 
 def prox_pulse(px: LEDController, color: tuple[int, int, int], prox: int) -> None:

src/pulse.py

 import time
-from typing import Final
 
 from .abstract import LEDController
 
-THRESHOLD: Final[int] = 75
-BLUE: Final[tuple[int, int, int]] = (0, 0, 255)
-TIME: Final[int] = 1
+THRESHOLD: int = 75
+BLUE: tuple[int, int, int] = (0, 0, 255)
+TIME: int = 1
 
 
 def pulse(px: LEDController, color: tuple[int, int, int], duration: float):

src/symbols.py

-from typing import Final
-
-MORSE_SYMBOL_TO_LETTER: Final[dict[str, str]] = {
+MORSE_SYMBOL_TO_LETTER: dict[str, str] = {
     ".-": "A",
     "-...": "B",
     "-.-.": "C",