migrate to decoupled Blowfish layout, fix TOC scrollspy, and update docs

- Theme Decoupling & Cleanup:
      - Fully decoupled and vendored the Blowfish theme directly into root directories (layouts/,
  assets/, static/, data/, i18n/).
      - De-registered and cleaned up legacy Git submodules (themes/blowfish, themes/hugo-admonitions)
  from the Git index to protect the build from upstream breakages.
      - Configured .gitignore to ignore development preview symlinks (content, static,
  config/_default/menus.en.toml), build folders (public/, resources/), and locks.

    - TOC & Layout Fixes:
      - Replaced the custom layouts/_default/single.html template with the Blowfish default to restore
  native container widths and the side-by-side flex layout.
      - Restored TOC to float on the right sidebar on desktop viewports and render inline on mobile
  viewports.
      - Fixed a parameter resolution bug in layouts/partials/toc.html by checking both .Site.Params.
  smartTOC and .Site.Params.article.smartTOC (where it is defined in params.toml).
      - Upgraded the TOC scrollspy JavaScript to target all '#TableOfContents' containers on the page,
  enabling highlight tracking on both desktop and mobile layouts.

    - Documentation Updates (README.md):
      - Restored YAML front matter metadata block at the top.
      - Added detailed notes on the CI/CD build process and Gitea runner deployment targets
  (/srv/www/docs-public and /srv/www/docs-private).
      - Added a categorized and sorted "Shortcodes Quick Reference" table at the top of the shortcodes
  section (ordered by Custom, Hugo Default, and Blowfish).
      - Documented custom shortcodes (Include, Screenshot, Raw HTML) and missing Hugo default
  shortcodes (Highlight, Instagram, Param, Ref, Relref, Twitter, Vimeo, Youtube).
      - Restructured headings to ensure all sub-shortcodes are H3, removed block break tags (<br/>),
  and appended horizontal separators (---) after H2 sections.

assets/js/firebase.js

@@ -0,0 +1,154 @@
+import { initializeApp } from "https://www.gstatic.com/firebasejs/9.23.0/firebase-app.js";
+import {
+  getFirestore,
+  doc,
+  getDoc,
+  setDoc,
+  updateDoc,
+  increment,
+  onSnapshot,
+} from "https://www.gstatic.com/firebasejs/9.23.0/firebase-firestore.js";
+import { getAuth, signInAnonymously } from "https://www.gstatic.com/firebasejs/9.23.0/firebase-auth.js";
+
+let app, db, auth, oids;
+try {
+  const configEl = document.getElementById("firebase-config");
+  if (!configEl?.textContent) {
+    throw new Error("Firebase config element not found");
+  }
+
+  const data = JSON.parse(configEl.textContent);
+  app = initializeApp(data.config);
+
+  oids = {
+    views: configEl.getAttribute("data-views"),
+    likes: configEl.getAttribute("data-likes"),
+  };
+
+  db = getFirestore(app);
+  auth = getAuth(app);
+} catch (e) {
+  console.error("Firebase initialization failed:", e.message);
+  throw e;
+}
+
+const id = oids?.views?.replaceAll("/", "-");
+const id_likes = oids?.likes?.replaceAll("/", "-");
+let liked = false;
+let authReady = false;
+
+function formatNumber(n) {
+  return n.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
+}
+
+function toggleLoaders(node) {
+  var classesString = node.className;
+  if (classesString == "") return;
+  var classes = classesString.split(" ");
+  for (var i in classes) {
+    node.classList.toggle(classes[i]);
+  }
+}
+
+function updateDisplay(collection, nodeId) {
+  const node = document.getElementById(nodeId);
+  if (!node) return;
+
+  const docId = nodeId.replaceAll("/", "-");
+  onSnapshot(
+    doc(db, collection, docId),
+    (snapshot) => {
+      node.innerText = snapshot.exists() ? formatNumber(snapshot.data()[collection]) : 0;
+      toggleLoaders(node);
+    },
+    (error) => {
+      console.error("Firebase snapshot update failed:", error);
+    },
+  );
+}
+
+async function recordView(id) {
+  if (!id || localStorage.getItem(id)) return;
+
+  try {
+    const ref = doc(db, "views", id);
+    const snap = await getDoc(ref);
+
+    snap.exists() ? await updateDoc(ref, { views: increment(1) }) : await setDoc(ref, { views: 1 });
+
+    localStorage.setItem(id, true);
+  } catch (e) {
+    console.error("Record view operation failed:", e.message);
+  }
+}
+
+function updateButton(isLiked) {
+  const hearts = document.querySelectorAll("span[id='button_likes_heart']");
+  const empties = document.querySelectorAll("span[id='button_likes_emtpty_heart']");
+  const texts = document.querySelectorAll("span[id='button_likes_text']");
+
+  hearts.forEach((el) => {
+    el.style.display = isLiked ? "" : "none";
+  });
+  empties.forEach((el) => {
+    el.style.display = isLiked ? "none" : "";
+  });
+  texts.forEach((el) => {
+    el.innerText = isLiked ? "" : "\xa0Like";
+  });
+}
+
+async function toggleLike(add) {
+  if (!id_likes || !authReady) return;
+
+  try {
+    const ref = doc(db, "likes", id_likes);
+    const snap = await getDoc(ref);
+
+    liked = add;
+    add ? localStorage.setItem(id_likes, true) : localStorage.removeItem(id_likes);
+    updateButton(add);
+
+    snap.exists()
+      ? await updateDoc(ref, { likes: increment(add ? 1 : -1) })
+      : await setDoc(ref, { likes: add ? 1 : 0 });
+  } catch (e) {
+    console.error("Like operation failed:", e.message);
+    liked = !add;
+    add ? localStorage.removeItem(id_likes) : localStorage.setItem(id_likes, true);
+    updateButton(!add);
+  }
+}
+
+signInAnonymously(auth)
+  .then(() => {
+    authReady = true;
+
+    document.querySelectorAll("span[id^='views_']").forEach((node) => {
+      if (node.id) updateDisplay("views", node.id);
+    });
+
+    document.querySelectorAll("span[id^='likes_']").forEach((node) => {
+      if (node.id) updateDisplay("likes", node.id);
+    });
+
+    recordView(id);
+
+    if (id_likes && localStorage.getItem(id_likes)) {
+      liked = true;
+      updateButton(true);
+    }
+
+    const likeButton = document.getElementById("button_likes");
+    if (likeButton) {
+      likeButton.addEventListener("click", () => {
+        toggleLike(!liked);
+      });
+    }
+  })
+  .catch((error) => {
+    console.error("Firebase anonymous sign-in failed:", error.message);
+    authReady = false;
+  });
+
+window.process_article = () => toggleLike(!liked);