fix(openapi): admit the bare-instant route samples older tracks carry

A track stored before the object form holds one ISO instant per point, and the detail answers it as stored. The route-sample declaration accepts both forms.

docs/api/openapi.yaml

@@ -50492,24 +50492,28 @@ components:
           anyOf:
             - type: array
               items:
-                type: object
-                properties:
-                  t:
-                    type: string
+                anyOf:
+                  - type: string
                     format: date-time
                     pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d(?:\.\d+)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$
-                  speedMs:
-                    type: number
-                  hr:
-                    type: integer
-                    minimum: -9007199254740991
-                    maximum: 9007199254740991
-                required:
-                  - t
-                additionalProperties: false
+                  - type: object
+                    properties:
+                      t:
+                        type: string
+                        format: date-time
+                        pattern: ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d(?:\.\d+)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$
+                      speedMs:
+                        type: number
+                      hr:
+                        type: integer
+                        minimum: -9007199254740991
+                        maximum: 9007199254740991
+                    required:
+                      - t
+                    additionalProperties: false
             - type: "null"
-          description: "One entry per geometry point, as the track was ingested: its instant and, where recorded, speed (m/s) and
-            heart rate (bpm)."
+          description: "One entry per geometry point, as the track was stored: a bare instant, or (from the workout batch and the
+            Apple Health export) an object with its instant and, where recorded, speed (m/s) and heart rate (bpm)."
       required:
         - geometry
         - sampleTimestamps

src/lib/openapi/routes/workouts.ts

@@ -187,15 +187,18 @@ const workoutRouteGeometry = z
     geometry: z.unknown(),
     sampleTimestamps: z
       .array(
-        z.object({
-          t: isoDateTime(),
-          speedMs: z.number().optional(),
-          hr: z.number().int().optional(),
-        }),
+        z.union([
+          isoDateTime(),
+          z.object({
+            t: isoDateTime(),
+            speedMs: z.number().optional(),
+            hr: z.number().int().optional(),
+          }),
+        ]),
       )
       .nullable()
       .describe(
-        "One entry per geometry point, as the track was ingested: its instant and, where recorded, speed (m/s) and heart rate (bpm).",
+        "One entry per geometry point, as the track was stored: a bare instant, or (from the workout batch and the Apple Health export) an object with its instant and, where recorded, speed (m/s) and heart rate (bpm).",
       ),
   })
   .meta({ id: "WorkoutRouteGeometry" });