fix(day): run only records with a start of their own through a day

The "Running that day" list carried the profile facts (smoking status,
alcohol pattern, shift schedule) as running items, titled by their raw
codes and counted "day n" from the date the fact was filed. A person who
quit smoking years ago and entered it last week read "day 13". Those facts
describe the person, hold no start the person gave, and are not part of a
day; the lifestyle section and its running kind are gone from the day, its
index and the model-facing get_day.

The same false count reached a medication filed without a start date: its
creation date stood in as the start. `since` is now null there, with no
day count, and the entry's date only bounds which days show it. A life
event's category is worded in the reader's language instead of its code.

docs/api/openapi.yaml

@@ -80922,7 +80922,6 @@ components:
                 - workouts
                 - cycle
                 - environment
-                - lifestyle
                 - lifeEvents
           description: Each day in the window that holds anything, keyed `YYYY-MM-DD`, with the sections it holds. Days without
             entries are absent.
@@ -81073,7 +81072,6 @@ components:
             - workouts
             - cycle
             - environment
-            - lifestyle
             - lifeEvents
         id:
           type: string
@@ -81176,7 +81174,6 @@ components:
               - workouts
               - cycle
               - environment
-              - lifestyle
               - lifeEvents
           additionalProperties:
             type: object
@@ -81217,7 +81214,6 @@ components:
             - restMode
             - cyclePhase
             - travel
-            - lifestyle
             - lifeEvent
         section:
           type: string
@@ -81238,7 +81234,6 @@ components:
             - workouts
             - cycle
             - environment
-            - lifestyle
             - lifeEvents
         id:
           type: string
@@ -81251,8 +81246,12 @@ components:
             - type: "null"
           description: A second line, already formatted (a dose, a destination).
         since:
-          type: string
-          description: A local calendar date, `YYYY-MM-DD`.
+          anyOf:
+            - type: string
+              description: A local calendar date, `YYYY-MM-DD`.
+            - type: "null"
+          description: The record's own start date. Null when the record holds none (a medication filed without a start date); the
+            entry's creation date is never put in its place.
         until:
           anyOf:
             - type: string
@@ -81265,7 +81264,7 @@ components:
               exclusiveMinimum: 0
               maximum: 9007199254740991
             - type: "null"
-          description: Day n of the period, counting `since` as day 1.
+          description: Day n of the period, counting `since` as day 1; null when `since` is null.
         dayCount:
           anyOf:
             - type: integer
@@ -81391,7 +81390,6 @@ components:
             - workouts
             - cycle
             - environment
-            - lifestyle
             - lifeEvents
         id:
           type: string