chore: vendor @joan/procedural-glyph-engine for portable builds

Move @joan/procedural-glyph-engine from absolute path dep
(/private/tmp/orby-pkg) to vendored local dep (web/vendor/) so the
SPA builds in Docker and on other machines without the temp dir.

- Vendor Orby v5.0.0 into web/vendor/
- Switch package.json dep to file:../vendor
- Update Dockerfile to COPY vendor into build context
- Use npm install instead of npm ci (file: deps need install)
- Fix missing trailing newline in Dockerfile

web/vendor/examples/example.css

@@ -0,0 +1,90 @@
+:root {
+  color-scheme: dark;
+  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
+  background: #050505;
+  color: #f2f1ee;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+body {
+  min-height: 100vh;
+  margin: 0;
+  display: grid;
+  place-items: center;
+  background:
+    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
+    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
+    #050505;
+  background-size: 24px 24px;
+}
+
+main {
+  width: min(680px, calc(100% - 32px));
+  padding: 32px;
+  border: 1px solid #2b2b2d;
+  border-radius: 14px;
+  background: #0b0b0c;
+}
+
+h1 {
+  margin: 0;
+  font-size: clamp(2rem, 7vw, 4rem);
+  font-weight: 300;
+  letter-spacing: -0.055em;
+}
+
+p {
+  max-width: 52ch;
+  color: #9b9b9f;
+  line-height: 1.65;
+}
+
+.glyph-stage {
+  min-height: 320px;
+  margin-top: 28px;
+  display: grid;
+  place-items: center;
+  border: 1px solid #232426;
+  border-radius: 10px;
+  background: #070708;
+}
+
+canvas,
+joan-glyph {
+  width: 220px;
+  height: 220px;
+  display: block;
+}
+
+.actions {
+  margin-top: 16px;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+button {
+  min-height: 42px;
+  padding: 0 14px;
+  border: 1px solid #35373a;
+  border-radius: 7px;
+  background: #0f1011;
+  color: #e8e8e4;
+  font: 600 0.72rem ui-monospace, SFMono-Regular, Menlo, monospace;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+}
+
+button:hover,
+button:focus-visible {
+  border-color: #f2f1ee;
+  outline: 0;
+}
+
+[role="status"] {
+  min-height: 1.4em;
+  font: 0.78rem ui-monospace, SFMono-Regular, Menlo, monospace;
+}