feat(timeline): draw lab markers as lines under the values

With the server naming lab markers as value lines, the page offers them:
the values menu lists the markers the record has numeric readings for,
under the groups the labs list sorts them into, and a choice is stored
and requested like any measurement line. The phone toolbar gains the same
menu as an icon button, since the chronicle shows the chosen lines too.

A lab row sits under the value lines in their rhythm, on its own scale.
Each reading is its own point on the day of the draw, joined in time
order by a thin stroke and never averaged. The reference range is painted
behind the points as the labs page paints it, a faint band with dashed
edges, and the scale holds it so the band is always in view. A reading
outside its range is a triangle pointing the way it left and is worded as
outside wherever it is written out, so colour is never the only sign.

A point reads on its own by pointer, keyboard and tap: the day, the value
with every digit it was stored with, the verdict, the range and the
report it was read from (a link once pinned). The selection bar lists
the bucket's readings with their report, a lab day's row in the phone
chronicle lists that day's readings, a screen-reader table lists them
all, and a marker with readings in a unit that does not convert says how
many were left out. Nothing else on the timeline changes.

To make room without growing the large timeline files, the legend, the
screen-reader tables and the value-line geometry move into modules of
their own, and the chart, the chronicle, the point cards and the page
each hand a part to a helper; the size baselines are written back lower.

Refs #1299

src/__tests__/baselines/source-function-lines.json

@@ -1,14 +1,14 @@
 {
   "$comment": "Production functions over 200 lines, keyed \"file :: name\", and their length. Maintained by src/__tests__/source-size-ratchet.test.ts.",
-  "count": 346,
-  "total": 112219,
+  "count": 345,
+  "total": 111940,
   "entries": {
     "app/achievements/page.tsx :: AchievementsPage": 206,
     "app/api/admin/backups/upload/route.ts :: apiHandler(arg)": 286,
     "app/api/admin/notifications/reminder-check/route.ts :: apiHandler(arg)": 206,
     "app/api/admin/settings/route.ts :: apiHandler(arg) #2": 211,
     "app/api/auth/login/route.ts :: apiHandler(arg)": 262,
-    "app/api/auth/me/route.ts :: apiHandler(arg)": 386,
+    "app/api/auth/me/route.ts :: apiHandler(arg)": 378,
     "app/api/auth/oidc/callback/route.ts :: apiHandler(arg)": 258,
     "app/api/auth/register/route.ts :: apiHandler(arg)": 268,
     "app/api/coach/about-me/route.ts :: apiHandler(arg) #2": 309,
@@ -19,7 +19,7 @@
     "app/api/encounters/[id]/route.ts :: apiHandler(arg) #2": 269,
     "app/api/environment/route.ts :: apiHandler(arg)": 201,
     "app/api/export/health-record/route.ts :: apiHandler(arg)": 241,
-    "app/api/ingest/medication/route.ts :: apiHandler(arg)": 262,
+    "app/api/ingest/medication/route.ts :: apiHandler(arg)": 259,
     "app/api/insights/cards/route.ts :: apiHandler(arg)": 211,
     "app/api/integrations/status/route.ts :: apiHandler(arg)": 451,
     "app/api/labs/[id]/route.ts :: apiHandler(arg) #2": 239,
@@ -62,7 +62,7 @@
     "components/admin/login-overview-section.tsx :: LoginOverviewSection": 503,
     "components/admin/pulse-day-mean-card.tsx :: PulseDayMeanCard": 305,
     "components/admin/reminders-section.tsx :: RemindersSection": 309,
-    "components/admin/user-management-section.tsx :: UserManagementSection": 626,
+    "components/admin/user-management-section.tsx :: UserManagementSection": 622,
     "components/admin/web-push-vapid-section.tsx :: WebPushVapidSection": 217,
     "components/auth/claim-profile.tsx :: ClaimProfile": 429,
     "components/auth/mfa-login-step.tsx :: MfaLoginStep": 217,
@@ -232,10 +232,9 @@
     "components/targets/range-bar.tsx :: RangeBar": 220,
     "components/targets/target-edit-sheet.tsx :: TargetEditSheetBody": 474,
     "components/timeline/life-event-form.tsx :: LifeEventForm": 281,
-    "components/timeline/series-point-tips.tsx :: SeriesPointTips": 212,
-    "components/timeline/timeline-chart.tsx :: ChartBody": 243,
-    "components/timeline/timeline-chronicle.tsx :: TimelineChronicle": 274,
-    "components/timeline/timeline-view.tsx :: TimelineView": 501,
+    "components/timeline/timeline-chart.tsx :: ChartBody": 236,
+    "components/timeline/timeline-chronicle.tsx :: TimelineChronicle": 246,
+    "components/timeline/timeline-view.tsx :: TimelineView": 486,
     "components/ui/responsive-sheet.tsx :: ResponsiveSheet": 239,
     "components/vaccinations/catalog-picker.tsx :: CatalogPicker": 221,
     "components/vaccinations/custom-vaccine-sheet.tsx :: CustomVaccineSheet": 246,
@@ -285,7 +284,7 @@
     "lib/gamification/achievements-result.ts :: buildAchievementsResult": 586,
     "lib/google-health/data-points.ts :: forEachDataPointPage": 288,
     "lib/google-health/data-points.ts :: forEachDataPointPage > walk": 223,
-    "lib/google-health/sync-core.ts :: upsertGoogleHealthMeasurements": 453,
+    "lib/google-health/sync-core.ts :: upsertGoogleHealthMeasurements": 452,
     "lib/illness/correlation.ts :: computeIllnessCorrelation": 233,
     "lib/import/labs-csv.ts :: importLabsCsv": 309,
     "lib/import/labs-csv.ts :: importLabsCsv > flush": 231,
@@ -348,6 +347,6 @@
     "lib/withings/sync-ecg.ts :: syncUserEcg": 202,
     "lib/withings/sync-sleep.ts :: syncUserSleep": 414,
     "lib/withings/sync.ts :: syncUserMeasurements": 337,
-    "proxy.ts :: proxy": 499
+    "proxy.ts :: proxy": 498
   }
 }