Normalize missing FIT lap bounds and grade-adjusted speed units (#49)

* Normalize additional FIT lap bounds and grade-adjusted speeds

* Sort new unit table entries, update SDK version, drop redundant tests

test_table_covers_installed_profile already pins these entries against the
installed profile, and existing tests cover the lap and raw conversion paths.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Tabish Mustufa <tabishm@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: 3 people

src/activity_parser/fit_fields.py

@@ -4,7 +4,7 @@
 package normalizes those to degrees, km and km/h. Vertical rates (``avg_vam``,
 ``vertical_speed``, ...) are left in m/s.
 
-The tables are transcribed from the FIT profile in garmin-fit-sdk 21.212.0, covering
+The tables are transcribed from the FIT profile in garmin-fit-sdk 21.217.0, covering
 the ``record``, ``lap`` and ``session`` message types. ``tests/test_fit_fields.py``
 checks that the installed profile's fields are covered.
 """
@@ -34,10 +34,15 @@
 LAP_UNITS: dict[str, float] = {
     "end_position_lat": SEMICIRCLES_TO_DEGREES,
     "end_position_long": SEMICIRCLES_TO_DEGREES,
+    "nec_lat": SEMICIRCLES_TO_DEGREES,
+    "nec_long": SEMICIRCLES_TO_DEGREES,
     "start_position_lat": SEMICIRCLES_TO_DEGREES,
     "start_position_long": SEMICIRCLES_TO_DEGREES,
+    "swc_lat": SEMICIRCLES_TO_DEGREES,
+    "swc_long": SEMICIRCLES_TO_DEGREES,
     "avg_stroke_distance": M_TO_KM,
     "total_distance": M_TO_KM,
+    "avg_grade_adjusted_speed": MPS_TO_KMH,
     "avg_speed": MPS_TO_KMH,
     "enhanced_avg_speed": MPS_TO_KMH,
     "enhanced_max_speed": MPS_TO_KMH,
@@ -56,6 +61,7 @@
     "avg_stroke_distance": M_TO_KM,
     "total_distance": M_TO_KM,
     "avg_ball_speed": MPS_TO_KMH,
+    "avg_grade_adjusted_speed": MPS_TO_KMH,
     "avg_speed": MPS_TO_KMH,
     "enhanced_avg_speed": MPS_TO_KMH,
     "enhanced_max_speed": MPS_TO_KMH,