diff --git a/knip.json b/knip.json
index b4b0b610c..4b0f6accf 100644
--- a/knip.json
+++ b/knip.json
@@ -72,6 +72,7 @@
   ],
   "ignoreExportsUsedInFile": true,
   "ignoreIssues": {
-    "src/components/ui/**": ["exports", "types"]
+    "src/components/ui/**": ["exports", "types"],
+    "src/lib/validations/**": ["types"]
   }
 }
diff --git a/src/lib/ai/coach/types.ts b/src/lib/ai/coach/types.ts
index 7752b3528..daba4b991 100644
--- a/src/lib/ai/coach/types.ts
+++ b/src/lib/ai/coach/types.ts
@@ -97,8 +97,6 @@ export const coachChatRequestSchema = z.object({
   scope: coachScopeSchema.optional(),
 });
 
-export type CoachChatRequest = z.infer<typeof coachChatRequestSchema>;
-
 /**
  * SSE event shapes emitted by the streaming endpoint.
  *
diff --git a/src/lib/ai/schema.ts b/src/lib/ai/schema.ts
index 022023c05..a86614d44 100644
--- a/src/lib/ai/schema.ts
+++ b/src/lib/ai/schema.ts
@@ -67,8 +67,6 @@ export const metricSourceSchema = z.object({
   n: z.number().int().nonnegative().optional(),
 });
 
-export type MetricSource = z.infer<typeof metricSourceSchema>;
-
 /**
  * Set of valid `referenceId` values, derived from
  * `MEDICAL_REFERENCES` so the two cannot drift. Validated lazily
@@ -118,10 +116,6 @@ export const aiRecommendationRationaleSchema = z.object({
   deviation: z.string().min(1, "rationale.deviation required"),
 });
 
-export type AIRecommendationRationale = z.infer<
-  typeof aiRecommendationRationaleSchema
->;
-
 export const aiRecommendationSchema = z
   .object({
     /**
@@ -191,8 +185,6 @@ export const aiRecommendationSchema = z
     }
   });
 
-export type AIRecommendation = z.infer<typeof aiRecommendationSchema>;
-
 export const aiCitationSchema = z.object({
   /** Snapshot key being cited. */
   type: z.string().min(1, "citation.type required"),
@@ -202,8 +194,6 @@ export const aiCitationSchema = z.object({
   summary: z.string().min(1, "citation.summary required"),
 });
 
-export type AICitation = z.infer<typeof aiCitationSchema>;
-
 export const aiWarningSchema = z.object({
   /** Topic — "blood_pressure", "pulse", etc. */
   topic: z.string().min(1, "warning.topic required"),
@@ -213,8 +203,6 @@ export const aiWarningSchema = z.object({
   severity: recommendationSeveritySchema.optional(),
 });
 
-export type AIWarning = z.infer<typeof aiWarningSchema>;
-
 /**
  * v1.4.20 phase B1 — Daily Briefing block.
  *
@@ -419,8 +407,6 @@ export const storyboardAnnotationSchema = z.object({
     .max(400, "storyboardAnnotation.detail must be <= 400 chars"),
 });
 
-export type StoryboardAnnotation = z.infer<typeof storyboardAnnotationSchema>;
-
 export const storyboardAnnotationsSchema = z
   .array(storyboardAnnotationSchema)
   .max(20, "storyboardAnnotations can hold at most 20 entries");
diff --git a/src/lib/ai/types.ts b/src/lib/ai/types.ts
index 43dece7c0..a6dd524d2 100644
--- a/src/lib/ai/types.ts
+++ b/src/lib/ai/types.ts
@@ -99,7 +99,6 @@ export const insightResultSchema = z.object({
 });
 
 export type InsightResult = z.infer<typeof insightResultSchema>;
-export type InsightFinding = z.infer<typeof insightFindingSchema>;
 
 // ─── Provider Types ────────────────────────────────────────
 
diff --git a/src/lib/analytics/effective-range.ts b/src/lib/analytics/effective-range.ts
index 9569ec1c1..2b78bcf06 100644
--- a/src/lib/analytics/effective-range.ts
+++ b/src/lib/analytics/effective-range.ts
@@ -42,13 +42,6 @@ export type ThresholdMetric =
   | "BONE_MASS"
   | "OXYGEN_SATURATION";
 
-export interface ThresholdOverride {
-  min: number;
-  max: number;
-  /** Set true when the value was entered by the user (not the computed default). */
-  isOverride?: boolean;
-}
-
 /**
  * Shape persisted in User.thresholdsJson. Any metric missing = use default.
  */
diff --git a/src/lib/auth/profile-update.ts b/src/lib/auth/profile-update.ts
index 50b7c59a6..371ab3a14 100644
--- a/src/lib/auth/profile-update.ts
+++ b/src/lib/auth/profile-update.ts
@@ -21,8 +21,6 @@ const extendedProfileSchema = profileSchema.extend({
   moodReminderEnabled: z.boolean().optional(),
 });
 
-export type ApplyProfileInput = z.infer<typeof extendedProfileSchema>;
-
 export interface ApplyProfileResult {
   ok: true;
   user: {
diff --git a/src/lib/charts/constants.ts b/src/lib/charts/constants.ts
index d6494a9c2..c84345cf2 100644
--- a/src/lib/charts/constants.ts
+++ b/src/lib/charts/constants.ts
@@ -15,21 +15,3 @@
 
 /** Full-size trend-card body height (non-mini chart cards on the dashboard). */
 export const CHART_HEIGHT_PX = 240;
-
-/**
- * Range-preset options for charts that expose a 7d / 30d / 90d / All
- * range selector. Each entry carries the i18n keys for the visible
- * label + sr-only title, plus a `points` count used by the underlying
- * `HealthChart` query window. `points: 0` denotes "all data".
- *
- * Re-used by the GLP-1 dashboard tile so its range strip stays in
- * lockstep with the rest of the trend strip.
- */
-export const CHART_RANGE_PRESETS = [
-  { labelKey: "charts.points7Label", titleKey: "charts.points7Title", points: 7 },
-  { labelKey: "charts.points30Label", titleKey: "charts.points30Title", points: 30 },
-  { labelKey: "charts.points90Label", titleKey: "charts.points90Title", points: 90 },
-  { labelKey: "charts.pointsAllLabel", titleKey: "charts.pointsAllTitle", points: 0 },
-] as const;
-
-export type ChartRangePreset = (typeof CHART_RANGE_PRESETS)[number];
diff --git a/src/lib/medications/side-effects/validators.ts b/src/lib/medications/side-effects/validators.ts
index 279ce0393..234968067 100644
--- a/src/lib/medications/side-effects/validators.ts
+++ b/src/lib/medications/side-effects/validators.ts
@@ -73,5 +73,3 @@ export const listSideEffectsSchema = z.object({
   limit: z.coerce.number().int().min(1).max(200).optional().default(50),
 });
 
-export type CreateSideEffectInput = z.infer<typeof createSideEffectSchema>;
-export type ListSideEffectsInput = z.infer<typeof listSideEffectsSchema>;
diff --git a/src/lib/notifications/types.ts b/src/lib/notifications/types.ts
index 4b0bc9676..158d62302 100644
--- a/src/lib/notifications/types.ts
+++ b/src/lib/notifications/types.ts
@@ -71,22 +71,6 @@ export interface NtfyChannelConfig {
   authToken?: string;
 }
 
-export type WebPushChannelConfig = Record<string, never>;
-
-/**
- * APNs channel config is empty by design — the per-device APNs token +
- * environment live on the `Device` model, not on the channel row. The
- * channel row exists so per-event preference toggles in
- * `NotificationPreference` apply uniformly across all four channels.
- */
-export type ApnsChannelConfig = Record<string, never>;
-
-export type ChannelConfig =
-  | TelegramChannelConfig
-  | NtfyChannelConfig
-  | WebPushChannelConfig
-  | ApnsChannelConfig;
-
 // ── Notification payload ──
 
 export interface NotificationPayload {
diff --git a/src/lib/queries/use-analytics-query.ts b/src/lib/queries/use-analytics-query.ts
index 80c6f902d..f0bcd6d61 100644
--- a/src/lib/queries/use-analytics-query.ts
+++ b/src/lib/queries/use-analytics-query.ts
@@ -5,7 +5,6 @@ import { useQuery, type UseQueryResult } from "@tanstack/react-query";
 import { useAuth } from "@/hooks/use-auth";
 import { queryKeys } from "@/lib/query-keys";
 import type { DataSummary } from "@/lib/analytics/trends";
-import type { SubPageAnalyticsData } from "@/types/analytics";
 
 /**
  * v1.4.33 IW2 — single TanStack-Query wrapper for `/api/analytics`.
@@ -39,15 +38,6 @@ import type { SubPageAnalyticsData } from "@/types/analytics";
  * stubbed on the slim path per the IW1 follow-up.
  */
 
-/**
- * Strict structural subset shared between the slim slice and the thick
- * default payload. Consumers that only read `summaries` should type
- * the hook return as `AnalyticsSlicePayload` (or import
- * `SubPageAnalyticsData` directly — same shape, kept aliased for
- * call-site clarity).
- */
-export type AnalyticsSlicePayload = SubPageAnalyticsData;
-
 /**
  * Discriminator for the server-side slice. `undefined` (the default)
  * routes onto the thick payload; `"summaries"` routes onto IW1's
diff --git a/src/lib/withings/webhook-handler.ts b/src/lib/withings/webhook-handler.ts
index 16f645d69..dd77e1d32 100644
--- a/src/lib/withings/webhook-handler.ts
+++ b/src/lib/withings/webhook-handler.ts
@@ -43,10 +43,6 @@ const WITHINGS_SLEEP_APPLI = 44;
 const WITHINGS_ACTIVITY_QUEUE = "withings-activity-sync";
 const WITHINGS_SLEEP_QUEUE = "withings-sleep-sync";
 
-export type WithingsWebhookAuthOutcome =
-  | { ok: true }
-  | { ok: false; reason: "missing_secret" | "mismatch" | "not_configured" };
-
 /**
  * Constant-time comparison helper. Returns false unless both inputs have
  * the same byte length AND match exactly.