diff --git a/prisma/migrations/0136_v11513_source_filter_indexes/migration.sql b/prisma/migrations/0136_v11513_source_filter_indexes/migration.sql
new file mode 100644
index 000000000..e2dab1bb0
--- /dev/null
+++ b/prisma/migrations/0136_v11513_source_filter_indexes/migration.sql
@@ -0,0 +1,15 @@
+-- v1.15.13 — source-filter support indexes for the measurements + mood
+-- management lists. The new list surfaces add a source filter (and the
+-- existing source/value sort). No index leads with `(user_id, source)`
+-- today, so a source filter forces a `user_id` scan + in-memory sort —
+-- the landmine at 100–200k rows per user. These two additive indexes turn
+-- a source filter + recency sort into an index range scan.
+--
+-- Pure additive `CREATE INDEX IF NOT EXISTS`, no backfill — same low-risk
+-- shape as migration 0123.
+
+CREATE INDEX IF NOT EXISTS "measurements_user_id_source_measured_at_idx"
+  ON "measurements" ("user_id", "source", "measured_at" DESC);
+
+CREATE INDEX IF NOT EXISTS "mood_entries_user_id_source_mood_logged_at_idx"
+  ON "mood_entries" ("user_id", "source", "mood_logged_at" DESC);
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index db2fb2cb7..3c6d22dd4 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -850,6 +850,10 @@ model Measurement {
   // (Postgres semantics) so manual entries don't collide here.
   @@unique([userId, type, source, externalId])
   @@index([userId, type, measuredAt])
+  // v1.15.13 — leads with `(userId, source)` so the management list's
+  // source filter + recency sort is an index range scan instead of a
+  // `userId` scan + in-memory sort. See migration 0136.
+  @@index([userId, source, measuredAt])
   @@index([externalId])
   // v1.7.0 — supports the `/api/sync/changes` keyset feed, which walks
   // `where userId` ordered by `(updatedAt asc, id asc)` with `take
@@ -2082,6 +2086,10 @@ model MoodEntry {
   // null, moodLoggedAt: { gte } }` ordered by `moodLoggedAt desc`; this
   // index turns that into a range scan. See migration 0123.
   @@index([userId, moodLoggedAt])
+  // v1.15.13 — leads with `(userId, source)` so the mood management
+  // list's source filter + recency sort is an index range scan. See
+  // migration 0136.
+  @@index([userId, source, moodLoggedAt])
   // v1.7.0 sync — keyset support for the `/api/sync/changes` mood feed
   // (`where userId` ordered by `(updatedAt asc, id asc)`).
   @@index([userId, updatedAt, id])
diff --git a/src/app/api/measurements/route.ts b/src/app/api/measurements/route.ts
index 91d88109d..ac55d66a2 100644
--- a/src/app/api/measurements/route.ts
+++ b/src/app/api/measurements/route.ts
@@ -97,6 +97,7 @@ export const GET = apiHandler(async (request: NextRequest) => {
     sortDir,
     aggregate,
     source,
+    sourceEq,
     groupBy,
     dayKey,
   } = parsed.data;
@@ -110,6 +111,10 @@ export const GET = apiHandler(async (request: NextRequest) => {
     // dashboard read paths) must never include them.
     deletedAt: null,
     ...(type && { type: type as MeasurementType }),
+    // v1.15.13 — management-list source filter. Distinct from the
+    // `source=rollup` opt-in above (which selects the rollup read tier);
+    // `sourceEq` narrows the plain list to one ingest source.
+    ...(sourceEq && { source: sourceEq }),
     ...(from || to
       ? {
           measuredAt: {
diff --git a/src/app/api/mood-entries/__tests__/route.test.ts b/src/app/api/mood-entries/__tests__/route.test.ts
index b501ed812..4e0a06e1b 100644
--- a/src/app/api/mood-entries/__tests__/route.test.ts
+++ b/src/app/api/mood-entries/__tests__/route.test.ts
@@ -178,6 +178,38 @@ describe("GET /api/mood-entries — 422 multi-issue (v1.4.43 W6)", () => {
   });
 });
 
+describe("GET /api/mood-entries — source filter (v1.15.13)", () => {
+  it("threads a valid source into the list where", async () => {
+    vi.mocked(prisma.moodEntry.findMany).mockResolvedValue([] as never);
+    vi.mocked(prisma.moodEntry.count).mockResolvedValue(0 as never);
+
+    const res = await GET(getReq("source=TELEGRAM"));
+    expect(res.status).toBe(200);
+
+    const call = vi.mocked(prisma.moodEntry.findMany).mock.calls[0][0];
+    expect(call?.where).toMatchObject({
+      userId: "user-1",
+      deletedAt: null,
+      source: "TELEGRAM",
+    });
+  });
+
+  it("omits source from the where when not supplied", async () => {
+    vi.mocked(prisma.moodEntry.findMany).mockResolvedValue([] as never);
+    vi.mocked(prisma.moodEntry.count).mockResolvedValue(0 as never);
+
+    const res = await GET(getReq(""));
+    expect(res.status).toBe(200);
+    const call = vi.mocked(prisma.moodEntry.findMany).mock.calls[0][0];
+    expect(call?.where).not.toHaveProperty("source");
+  });
+
+  it("422s on an unknown source value", async () => {
+    const res = await GET(getReq("source=BOGUS"));
+    expect(res.status).toBe(422);
+  });
+});
+
 describe("POST /api/mood-entries — 422 multi-issue (v1.4.43 W6)", () => {
   it("surfaces TWO simultaneous validation errors", async () => {
     // Bad `mood` enum + missing `moodLoggedAt`.
diff --git a/src/app/api/mood-entries/route.ts b/src/app/api/mood-entries/route.ts
index 4da453a97..e24894ab6 100644
--- a/src/app/api/mood-entries/route.ts
+++ b/src/app/api/mood-entries/route.ts
@@ -71,13 +71,16 @@ export const GET = apiHandler(async (request: NextRequest) => {
     return returnAllZodIssues(parsed.error, 422);
   }
 
-  const { mood, from, to, limit, offset, sortBy, sortDir } = parsed.data;
+  const { mood, source, from, to, limit, offset, sortBy, sortDir } =
+    parsed.data;
 
   const where = {
     userId: user.id,
     // v1.7.0 sync — hide soft-deleted (tombstoned) rows from the list.
     deletedAt: null,
     ...(mood && { mood }),
+    // v1.15.13 — management-list source filter.
+    ...(source && { source }),
     ...(from || to
       ? {
           date: {
diff --git a/src/lib/validations/__tests__/measurement.test.ts b/src/lib/validations/__tests__/measurement.test.ts
index 3b95a933e..403fcf3b2 100644
--- a/src/lib/validations/__tests__/measurement.test.ts
+++ b/src/lib/validations/__tests__/measurement.test.ts
@@ -236,6 +236,48 @@ describe("measurement validation", () => {
     });
   });
 
+  describe("listMeasurementsSchema — v1.15.13 sourceEq filter", () => {
+    it("accepts a valid MeasurementSource on sourceEq", () => {
+      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "WITHINGS" });
+      expect(parsed.success).toBe(true);
+      if (parsed.success) {
+        expect(parsed.data.sourceEq).toBe("WITHINGS");
+      }
+    });
+
+    it("leaves sourceEq undefined when omitted", () => {
+      const parsed = listMeasurementsSchema.safeParse({});
+      expect(parsed.success).toBe(true);
+      if (parsed.success) {
+        expect(parsed.data.sourceEq).toBeUndefined();
+      }
+    });
+
+    it("rejects an unknown sourceEq value", () => {
+      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "BOGUS" });
+      expect(parsed.success).toBe(false);
+    });
+
+    it("rejects the rollup opt-in value on sourceEq (distinct from source)", () => {
+      // `rollup` is the rollup-tier opt-in for `source`, NOT a valid
+      // MeasurementSource filter — sourceEq must not accept it.
+      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "rollup" });
+      expect(parsed.success).toBe(false);
+    });
+
+    it("accepts source=rollup and sourceEq together (independent params)", () => {
+      const parsed = listMeasurementsSchema.safeParse({
+        source: "rollup",
+        sourceEq: "APPLE_HEALTH",
+      });
+      expect(parsed.success).toBe(true);
+      if (parsed.success) {
+        expect(parsed.data.source).toBe("rollup");
+        expect(parsed.data.sourceEq).toBe("APPLE_HEALTH");
+      }
+    });
+  });
+
   // v1.4.38 — the per-day drill-down branch always returns at most
   // 1000 rows (one pathological phone-only stepCount day). Push the
   // cap into the validator so a caller asking for more sees a 422
diff --git a/src/lib/validations/measurement.ts b/src/lib/validations/measurement.ts
index 0b843fc5b..c2de3706f 100644
--- a/src/lib/validations/measurement.ts
+++ b/src/lib/validations/measurement.ts
@@ -586,6 +586,12 @@ export const listMeasurementsSchema = z
     // when the rollup bucket set is empty for the requested window so
     // brand-new accounts still see correct data on their first chart.
     source: z.enum(["rollup"]).optional(),
+    // v1.15.13 — management-list source FILTER. The `source` key above is
+    // the rollup-tier opt-in (`["rollup"]`), NOT a source filter, so the
+    // filter rides a distinct param. Validated against `MeasurementSource`;
+    // threaded into the plain-list `where`. Backed by the `(userId, source,
+    // measuredAt)` index (migration 0136).
+    sourceEq: measurementSourceEnum.optional(),
     // v1.4.37 W7c — list-view "one row per day" mode for cumulative
     // types (steps, active energy, distance, flights, daylight). When
     // `groupBy=day` is set and `type` is a cumulative HK type, the route
diff --git a/src/lib/validations/moodlog.ts b/src/lib/validations/moodlog.ts
index 6597a3358..d093101f3 100644
--- a/src/lib/validations/moodlog.ts
+++ b/src/lib/validations/moodlog.ts
@@ -165,6 +165,11 @@ export const updateMoodEntrySchema = z.object({
 
 export const listMoodEntriesSchema = z.object({
   mood: moodLevelEnum.optional(),
+  // v1.15.13 — source filter for the management list. Validated against
+  // the mood source set; threaded into the list `where` (the `userId` +
+  // `deletedAt: null` pins stay). Backed by the `(userId, source,
+  // moodLoggedAt)` index (migration 0136).
+  source: moodSourceEnum.optional(),
   from: z
     .string()
     .regex(/^\d{4}-\d{2}-\d{2}$/)