diff --git a/src/lib/ai/prompts/base-system.ts b/src/lib/ai/prompts/base-system.ts
index 687bf4e03..631347eb0 100644
--- a/src/lib/ai/prompts/base-system.ts
+++ b/src/lib/ai/prompts/base-system.ts
@@ -60,8 +60,15 @@ const OUTPUT_LANGUAGE_TOKEN = "{{OUTPUT_LANGUAGE}}";
  * prose. They now compose the English body with their language named in the
  * output clause and the locale's own reply-language directive appended last.
  * The German and English prompts are byte-identical to 6.1.0 (test-pinned).
+ * 6.3.0 — the biomarker card joins this prompt. It was the last surface in the
+ * family composing its own inline scaffold, so it carried none of the contracts
+ * below and instructed the model to state the value first. The base sections
+ * are unchanged; the bump exists to re-fingerprint the cached assessments that
+ * were generated under the old inline prompt, since the per-card input hash
+ * folds this constant in. The regeneration is one-time and rides the nightly
+ * warm's existing per-user pacing.
  */
-export const PROMPT_VERSION = "6.2.0" as const;
+export const PROMPT_VERSION = "6.3.0" as const;
 
 /**
  * Base system prompt for the per-metric Insights *assessment* cards.
diff --git a/src/lib/insights/__tests__/no-key-fallbacks.test.ts b/src/lib/insights/__tests__/no-key-fallbacks.test.ts
index 58b93d395..9f6446cf9 100644
--- a/src/lib/insights/__tests__/no-key-fallbacks.test.ts
+++ b/src/lib/insights/__tests__/no-key-fallbacks.test.ts
@@ -80,9 +80,12 @@ describe("signal-grounded no-key fallbacks", () => {
     expect(text).not.toContain("Schnitt von");
   });
 
-  it("falls back to the generic tip when no signal is given (mood, en)", () => {
+  it("falls back to the no-signal floor when no signal is given (mood, en)", () => {
     const text = getNoKeyMoodStatusText("en");
-    expect(text).toContain("Evaluate mood trends over several weeks");
+    // The floor states the absence plainly before saying anything else — it
+    // has no signal to ground against, so it may not imply a read.
+    expect(text).toContain("No assessment on this one right now");
+    expect(text).toContain("Mood reads over weeks");
   });
 
   it("falls back to the generic tip when the signal has no finite current (adherence, en)", () => {
@@ -90,7 +93,8 @@ describe("signal-grounded no-key fallbacks", () => {
       "en",
       signal({ current: Number.NaN }),
     );
-    expect(text).toContain("Consistency in intake matters more");
+    expect(text).toContain("No assessment on this one right now");
+    expect(text).toContain("Adherence reads as consistency over weeks");
   });
 
   it("adherence grounds with a percent value and a routine pointer (en)", () => {
diff --git a/src/lib/insights/eval/__tests__/tone-harness.test.ts b/src/lib/insights/eval/__tests__/tone-harness.test.ts
index b07e9033a..90ebacf18 100644
--- a/src/lib/insights/eval/__tests__/tone-harness.test.ts
+++ b/src/lib/insights/eval/__tests__/tone-harness.test.ts
@@ -148,6 +148,7 @@ describe("tone harness — deterministic fallbacks", () => {
       direction: "higher-better",
       n: 21,
       newestDaysAgo: 0,
+      ...over,
     } as unknown as MetricSignal;
   }