From 6619e6e1fb463add92581c773aec4dedd439b304 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=9B=B7=E7=94=B5=E8=8A=BD=E8=A1=A3?=
 <zhangyanghaha0407@outlook.com>
Date: Thu, 8 Oct 2026 23:35:05 -0400
Subject: [PATCH] Site: close road gaps, ElyMark exports to PDF, test road
 links; recording fixes

---
 site/src/model.ts         |  5 +++--
 site/test/model.test.ts   | 33 +++++++++++++++++++++++++++++++++
 site/video/record/lib.sh  | 11 -----------
 site/video/record/tree.sh |  2 +-
 4 files changed, 37 insertions(+), 14 deletions(-)

diff --git a/site/src/model.ts b/site/src/model.ts
index 8f64cd7..9923bef 100644
--- a/site/src/model.ts
+++ b/site/src/model.ts
@@ -38,13 +38,14 @@ const tree = [on(6.5, 7.6, 0.7, 0.7, 2.8), on(8.7, 7.6, 0.7, 0.7, 1.8), on(7.2,
 /** Headings stepping down. */
 const mark = [0, 1, 2].map((i) => on(1, 7 + i, 3, 1, 2 - i * 0.6));
 
-/** Roads: every document exports to PDF; Markdown goes to Git. */
+/** Roads: exports go to PDF; Markdown goes to Git. */
 const road = (x: number, y: number, w: number, d: number) => on(x, y, w, d, 0.08, 0, ACCENT);
 const roads = [
   road(2, 4, 0.6, 0.6),
-  road(6, 4, 0.6, 0.6),
+  road(6, 3.9, 0.6, 0.7),
   road(10.7, 2.85, 0.6, 1.75),
   road(2, 4.6, 11, 0.6),
+  road(2, 5.2, 0.6, 1.8),
   road(4, 7.6, 2.5, 0.6),
 ];
 
diff --git a/site/test/model.test.ts b/site/test/model.test.ts
index 8686dbd..3c8b09d 100644
--- a/site/test/model.test.ts
+++ b/site/test/model.test.ts
@@ -25,3 +25,36 @@ test("the accent covers at most a tenth of the visible tops", () => {
 test("six apps between the desk and the roads", () => {
   assert.deepEqual(model.slice(1, -1).map((p) => p.name), ["ElyDoc", "ElyTable", "ElyShow", "ElyPDF", "ElyTree", "ElyMark"]);
 });
+
+type Box = (typeof all)[number];
+const near = (a: number, aw: number, b: number, bw: number) => a <= b + bw + 1e-9 && b <= a + aw + 1e-9;
+const shared = (a: number, aw: number, b: number, bw: number) => Math.min(a + aw, b + bw) - Math.max(a, b) > 1e-9;
+/** Two ground blocks meet along an edge or overlap. */
+const meet = (a: Box, b: Box) =>
+  a.z === b.z && near(a.x, a.w, b.x, b.w) && near(a.y, a.d, b.y, b.d) &&
+  (shared(a.x, a.w, b.x, b.w) || shared(a.y, a.d, b.y, b.d));
+
+const part = (name: string) => {
+  const found = model.find((p) => p.name === name);
+  assert.ok(found, name);
+  return found.blocks;
+};
+
+/** Whether roads join two apps' ground blocks. */
+function linked(from: string, to: string): boolean {
+  const roads = part("Roads");
+  const ground = (name: string) => part(name).filter((b) => b.z === roads[0].z);
+  const start = roads.filter((r) => ground(from).some((b) => meet(r, b)));
+  const seen = new Set(start);
+  for (const r of seen) for (const n of roads) if (!seen.has(n) && meet(r, n)) seen.add(n);
+  return [...seen].some((r) => ground(to).some((b) => meet(r, b)));
+}
+
+test("every app has a building", () => {
+  for (const p of model.slice(1, -1)) assert.ok(p.blocks.length > 0, p.name);
+});
+
+test("roads carry exports to PDF and Markdown to Git", () => {
+  for (const app of ["ElyDoc", "ElyTable", "ElyShow", "ElyMark"]) assert.ok(linked(app, "ElyPDF"), app);
+  assert.ok(linked("ElyMark", "ElyTree"));
+});
diff --git a/site/video/record/lib.sh b/site/video/record/lib.sh
index e58f6a6..2dcca71 100644
--- a/site/video/record/lib.sh
+++ b/site/video/record/lib.sh
@@ -63,17 +63,6 @@ wait_log() {
   return 1
 }
 
-# Waits until the AX tree shows text $1.
-wait_ax() {
-  local i
-  for i in $(seq $((${2:-30} * 2))); do
-    "$bin/ax-values" "$app_pid" | grep -q -- "$1" && return 0
-    sleep 0.5
-  done
-  echo "AX never showed: $1" >&2
-  return 1
-}
-
 # Center "x y" of the first AX line matching $1.
 where() {
   local i at
diff --git a/site/video/record/tree.sh b/site/video/record/tree.sh
index f7bda7a..b6749e7 100644
--- a/site/video/record/tree.sh
+++ b/site/video/record/tree.sh
@@ -31,7 +31,7 @@ mark "History tab: graph"
 mouse click $((x + 145)) $((y + 85))
 pause 1.2
 mark "open the new commit"
-mouse click $((x + 260)) $((y + 220))
+mouse click $((x + 260)) $((y + 156))
 pause 1.0
 mouse move $((x + 1000)) $((y + 700)) 0.8
 pause 1.5