chore(mood): drop the notes timeline from the insights page

The notes timeline display comes off the mood insights surface; note
capture on the entry form stays. Add a structural guard that the
timeline component is gone, the insights sections no longer render it,
and the narrative feed and in-target tile take its place.

src/components/insights/mood/__tests__/mood-notes-timeline-removed.test.ts

@@ -0,0 +1,55 @@
+import { describe, it, expect } from "vitest";
+import { existsSync, readFileSync } from "node:fs";
+import { join } from "node:path";
+
+const COMPONENT_DIR = join(__dirname, "..");
+const MOOD_LIST = join(
+  __dirname,
+  "../../../mood/mood-list.tsx",
+);
+
+/**
+ * v1.8.6 — the notes timeline display is removed from the mood insights
+ * surface (note capture on the form stays). These structural guards keep
+ * the surface from regressing back to a notes feed and keep long notes
+ * truncated in the entries table.
+ */
+describe("mood notes timeline removal", () => {
+  it("deletes the notes-timeline component file", () => {
+    expect(existsSync(join(COMPONENT_DIR, "mood-notes-timeline.tsx"))).toBe(
+      false,
+    );
+  });
+
+  it("no longer renders the notes timeline from the insights sections", () => {
+    const src = readFileSync(
+      join(COMPONENT_DIR, "mood-insights-sections.tsx"),
+      "utf8",
+    );
+    expect(src).not.toContain("MoodNotesTimeline");
+    expect(src).not.toContain("notesTimeline");
+    expect(src).not.toContain("notesTimelineTitle");
+  });
+
+  it("mounts the narrative feed in the insights sections", () => {
+    const src = readFileSync(
+      join(COMPONENT_DIR, "mood-insights-sections.tsx"),
+      "utf8",
+    );
+    expect(src).toContain("MoodNarrativeFeed");
+    expect(src).toContain("MoodInTargetTile");
+  });
+});
+
+describe("mood entries table — long-note truncation", () => {
+  const src = readFileSync(MOOD_LIST, "utf8");
+
+  it("caps the note column width to prevent horizontal scroll", () => {
+    expect(src).toContain("max-w-[18rem]");
+  });
+
+  it("clamps the note and exposes the full text via a tooltip", () => {
+    expect(src).toContain("line-clamp-2");
+    expect(src).toContain("TooltipContent");
+  });
+});