wip: foto da pasta principal antes de trocar de branch

Estado do disco em 14/10/2026, sem filtrar. Inclui as copias .sync-conflict-* do Syncthing de 07/10 e os 15 arquivos que o Syncthing apagou; todo esse conteudo ja existia em outros commits. So havia fora do Git: AGENTS.md, CLAUDE.md e a alteracao em data/project-health.json.

app/components/story/notebookTimeline.test.sync-conflict-20261007-222935-5YVN6QV.ts

@@ -0,0 +1,75 @@
+import { getNotebookFrame, getNotebookSeekProgress } from "./notebookTimeline";
+
+describe("notebook choreography", () => {
+  it("opens and boots before browsing, then blanks the display before closing", () => {
+    const frames = Array.from({ length: 1001 }, (_, index) =>
+      getNotebookFrame(index / 1000, 4),
+    );
+    const phases = [...new Set(frames.map((frame) => frame.phase))];
+    expect(phases).toEqual([
+      "approach",
+      "open",
+      "boot",
+      "cursor-in",
+      "browse",
+      "hold",
+      "close",
+    ]);
+    for (const frame of frames) {
+      if (frame.phase === "open") expect(frame.screenOpacity).toBe(0);
+      if (frame.cursorVisible) expect(frame.screenOpacity).toBe(1);
+      if (frame.phase === "close" && frame.lidAngle < 112)
+        expect(frame.screenOpacity).toBe(0);
+    }
+    expect(getNotebookFrame(-1, 4).lidAngle).toBe(0);
+    expect(getNotebookFrame(2, 4).lidAngle).toBe(0);
+  });
+
+  it("keeps the previous project until cursor arrival, including reverse scroll", () => {
+    const frames = Array.from({ length: 10001 }, (_, index) =>
+      getNotebookFrame(index / 10000, 4),
+    );
+    for (let selected = 1; selected < 4; selected += 1) {
+      const arrival = frames.findIndex(
+        (frame) => frame.activeTabIndex === selected,
+      );
+      const before = getNotebookFrame((arrival - 1) / 10000, 4);
+      const atClick = frames[arrival];
+      expect(before.activeTabIndex).toBe(selected - 1);
+      expect(before.cursorClicking).toBe(false);
+      expect(atClick.cursorClicking).toBe(true);
+      expect(atClick.cursorX).toBeCloseTo((selected + 0.5) / 4);
+      const reversed = getNotebookFrame((arrival - 2) / 10000, 4);
+      expect(reversed.activeTabIndex).toBe(selected - 1);
+      expect(reversed.cursorX).toBeLessThan(atClick.cursorX);
+      expect(reversed.cursorX).toBeGreaterThan((selected - 0.5) / 4);
+    }
+  });
+
+  it("seeks directly into a readable hold for the requested project", () => {
+    for (const count of [1, 4]) {
+      for (let index = 0; index < count; index += 1) {
+        const progress = getNotebookSeekProgress(index, count);
+        const frame = getNotebookFrame(progress, count);
+        expect(frame.activeTabIndex).toBe(index);
+        expect(frame.screenOpacity).toBe(1);
+        expect(frame.cursorClicking).toBe(false);
+        expect(getNotebookFrame(progress + 0.03, count).activeTabIndex).toBe(
+          index,
+        );
+      }
+    }
+    expect(
+      getNotebookFrame(getNotebookSeekProgress(99, 4), 4).activeTabIndex,
+    ).toBe(3);
+  });
+
+  it("does not expose a tab or cursor for empty or invalid project counts", () => {
+    expect(getNotebookFrame(0.6, 0)).toMatchObject({
+      activeTabIndex: -1,
+      cursorVisible: false,
+      cursorClicking: false,
+    });
+    expect(getNotebookFrame(0.6, Number.NaN).activeTabIndex).toBe(-1);
+  });
+});