fix(insights): add chart tokens for v1.25 clinical measurement types

The PHQ-9 / GAD-7 screener totals and the physical clinical measures
(grip strength, pain NRS, waist circumference, waist-to-height) are
continuous numeric series. Register their metric:<TYPE> tokens so the
chart-token drift guard passes and the AI insight prose can reference
them through the generic chart renderer.

src/lib/insights/chart-tokens.ts

@@ -127,6 +127,16 @@ export const ALLOWED_CHART_TOKENS = [
   // v1.19.0 — Oura resilience. A continuous daily ordinal series (1–5), so it
   // carries a `metric:<TYPE>` token and renders through the generic chart.
   "metric:RESILIENCE",
+  // v1.25.0 — clinical signals. Mental-health screener totals (PHQ-9 0–27,
+  // GAD-7 0–21) and the physical clinical measures are continuous numeric
+  // series, so each carries a `metric:<TYPE>` token and renders through the
+  // generic chart.
+  "metric:PHQ9_SCORE",
+  "metric:GAD7_SCORE",
+  "metric:GRIP_STRENGTH",
+  "metric:PAIN_NRS",
+  "metric:WAIST_CIRCUMFERENCE",
+  "metric:WAIST_TO_HEIGHT",
 ] as const;
 
 export type ChartToken = (typeof ALLOWED_CHART_TOKENS)[number];