diff --git a/CLAUDE.md b/CLAUDE.md
index 04e887e..1317ff3 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -6,7 +6,7 @@ Rules, gotchas, and entry points — the things that must change what you do *be
 |---|---|
 | How the site hangs together — stack, plugin roles, templates, partial contracts, data flows | [`docs/reference/architecture.md`](docs/reference/architecture.md) |
 | Domain vocabulary — Trip, Entry, Story, Active Trip | [`CONCEPTS.md`](CONCEPTS.md) |
-| Doing something operational — posting, GPX, switching trips, local setup, deploying | [`docs/guides/`](docs/guides/) |
+| Doing something operational — posting, writing stories, GPX, switching trips, local setup, deploying | [`docs/guides/`](docs/guides/) |
 | Test suite layout and conventions | [`docs/reference/testing.md`](docs/reference/testing.md) |
 | A bug or workflow trap already hit and written up | [`docs/solutions/`](docs/solutions/) — grep the `module`/`tags`/`problem_type` frontmatter; check when working in a documented area |
 | Folder map, prerequisites, the full `make` command list | [`README.md`](README.md) |
@@ -20,7 +20,8 @@ The site is Grav (flat-file PHP CMS, no database) in Docker, with content and th
 - **Never SSH to a server directly** — use the `make remote-*` targets, since credentials live in `.env`. If no target covers what you need, ask the user to run it or propose a new target.
 - **Never hand-edit build output** — sources and outputs share folders under `user/themes/intotheeast/` (paths below are relative to it), so know which is which. Run `make build-assets` after editing any source.
   - Everything in `js/` is **generated** *except* `js/src/`, `js/maplibre-utils.js` and `js/nav.js`.
-  - `css-compiled/` and `fonts/` are generated (sources: `css/style.css`, `css/tokens.css`); so is `templates/partials/weather-icons.html.twig` (source: `scripts/gen-weather-icons.js`).
+  - `css-compiled/` and `fonts/` are generated by esbuild from the `js/src/` entrypoints' CSS and font imports (fontsource, photoswipe, maplibre-gl) — **not** from `css/`. `css/style.css` and `css/tokens.css` are hand-authored and served directly (`partials/base.html.twig`), so editing them needs no rebuild.
+  - `templates/partials/weather-icons.html.twig` is generated (source: `scripts/gen-weather-icons.js`).
 - **Never toggle dev↔prod mode mid-session.** If a caching or config issue appears, fix it at the application level (plugin, template logic) rather than flipping a mode flag — mode switches leave inconsistent state and make bugs harder to reproduce.
 
 ## Dev environment
diff --git a/tests/ui/stories/stories.spec.js b/tests/ui/stories/stories.spec.js
index b35f13f..369237a 100644
--- a/tests/ui/stories/stories.spec.js
+++ b/tests/ui/stories/stories.spec.js
@@ -1,5 +1,5 @@
 // @ts-check
-// Tests: S1–S7 — story mode rendering and navigation
+// Tests: S1–S9 — story mode rendering and navigation
 // Requires demo data: run `make demo-load` before this suite.
 const { test, expect } = require('@playwright/test');
 
@@ -85,3 +85,74 @@ test('S7: story body back link has back-pill class', async ({ page }) => {
     await expect(bodyBack).toBeAttached();
     await expect(bodyBack).toHaveText(/← Back/);
 });
+
+// ── S8: Scrolly-section text panels actually render beside the pinned image ───
+// The server ships the panel text inside .scrolly__steps-content, which CSS hides
+// (style.css: `display: none`). Only the inline Scrollama block in story.html.twig
+// splits it into visible .scrolly-step divs — and it early-returns silently if the
+// main.js bundle (which sets window.scrollama) hasn't executed yet. S3 asserted the
+// image column exists; nothing asserted the text column was non-empty.
+test('S8: scrolly-section builds visible step panels from its slot content', async ({ page }) => {
+    await page.goto(STORY_SCROLLY);
+    await expect(page.locator('.story-hero__img')).toBeVisible({ timeout: 8000 });
+
+    // The bundle must have published scrollama before the inline block ran
+    expect(
+        await page.evaluate(() => typeof window.scrollama !== 'undefined'),
+        'window.scrollama published by main.js bundle'
+    ).toBe(true);
+
+    // Every scrolly-section must have produced at least one step
+    const sections = page.locator('.scrolly');
+    const sectionCount = await sections.count();
+    expect(sectionCount, 'Two scrolly-sections').toBe(2);
+
+    for (let i = 0; i < sectionCount; i++) {
+        const section = sections.nth(i);
+        const steps = section.locator('.scrolly-step');
+        expect(
+            await steps.count(),
+            `scrolly-section ${i} split its slot content into steps`
+        ).toBeGreaterThan(0);
+    }
+
+    // …and the text must be readable, not left hidden in the raw slot.
+    // Scroll each step into view so its reveal transition completes.
+    const firstStep = page.locator('.scrolly').first().locator('.scrolly-step').first();
+    await firstStep.scrollIntoViewIfNeeded();
+    await page.waitForTimeout(800);
+    await expect(firstStep.locator('.scrolly-step__inner')).toBeVisible();
+    const text = (await firstStep.innerText()).trim();
+    expect(text.length, 'First step panel renders non-empty text').toBeGreaterThan(20);
+});
+
+// ── S9: Back-to-top is wired once, by main.js, and pushes a history entry ─────
+// The inline duplicate in story.html.twig was removed; initBackToTop() in
+// js/src/main.js now solely owns #story-totop. That makes the button depend on
+// the bundle having loaded, so assert the observable behaviour end to end.
+test('S9: story back-to-top reveals on scroll, returns to top, and pushes history', async ({ page }) => {
+    await page.goto(STORY_SCROLLY);
+    await expect(page.locator('.story-hero__img')).toBeVisible({ timeout: 8000 });
+
+    const btn = page.locator('#story-totop');
+    await expect(btn).toBeAttached();
+
+    // Hidden until scrolled past the 0.8 * viewport threshold
+    await expect(btn).not.toHaveClass(/is-visible/);
+
+    const historyBefore = await page.evaluate(() => history.length);
+
+    await page.evaluate(() => window.scrollTo(0, window.innerHeight * 2));
+    await expect(btn).toHaveClass(/is-visible/, { timeout: 3000 });
+
+    await btn.click();
+    await expect
+        .poll(() => page.evaluate(() => window.scrollY), { timeout: 3000 })
+        .toBeLessThan(10);
+
+    // main.js's variant pushes a history entry; the removed inline copy did not
+    expect(
+        await page.evaluate(() => history.length),
+        'Back-to-top pushed a history entry'
+    ).toBeGreaterThan(historyBefore);
+});