Remove category/year filtering, keep tag-only filtering (AI)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

README.md

@@ -22,12 +22,12 @@ A minimal CMS where articles are Markdown files rendered in the browser. No buil
 ## Features
 
 - **Dark mode** — automatically follows the OS `prefers-color-scheme` setting; no toggle needed.
-- **Client-side search** — the search box in the header filters all articles by title, description, author, category, and tags in-memory. Navigates to `#search/query` so results are bookmarkable; results paginate the same way the article list does.
+- **Client-side search** — the search box in the header filters all articles by title, description, author, and tags in-memory. Navigates to `#search/query` so results are bookmarkable; results paginate the same way the article list does.
 - **Reading time** — estimated from the article word count (200 wpm) and shown on list cards and in article headers. Computed automatically; no frontmatter field needed.
 - **Table of contents** — auto-generated from `h2`/`h3` headings and inserted at the top of the article body. Only appears when the article has three or more headings.
 - **Back link** — a "← Back to articles" link above every article, returning to whatever list, filter, or search page (and page number) the reader actually came from rather than always resetting to page 1 of everything.
 - **Pagination** — article list paginates at 20 articles per page; page state is encoded in the hash so browser history works.
-- **Author, category, and tag filtering** — clicking an author name, category badge, or tag pill shows a filtered list. All three support pagination.
+- **Author and tag filtering** — clicking an author name or tag pill shows a filtered list. Both support pagination.
 - **Responsive layout** — layout, cards, images, and pagination all adapt to narrow screens (breakpoint at 640 px).
 - **Keyboard navigation** — all interactive elements have visible `:focus-visible` outlines for keyboard users.
 - **Author profiles** — a profile card with bio and social links is shown at the top of each author's article list. Created by adding `articles/{author}/{author}.md`.
@@ -66,7 +66,7 @@ from the library — not something an embedding page needs to bring along.
 │   ├── cache.js        # IndexedDB cache for discovered articles, keyed by article file path
 │   ├── concurrency.js  # mapWithConcurrency() — caps simultaneous per-article fetches
 │   ├── i18n.js         # t(), loadStrings(), getLocale() — UI string lookup
-│   ├── views.js        # loadArticleList, loadArticle, loadAuthorView, loadCategoryView, loadSearch
+│   ├── views.js        # loadArticleList, loadArticle, loadAuthorView, loadTagView, loadSearch
 │   └── router.js       # Hash router and app entry point
 ├── vendor/
 │   └── marked.min.js   # marked.js (local copy, loaded as a global) — the only 3rd-party code
@@ -110,7 +110,7 @@ export const ARTICLES_URL = new URL('/blog-content/articles/', location.origin).
 ## Adding an article
 
 An article is a single Markdown file placed directly in its author's directory. Its *file name*
-is where its publish date, tags, category, and draft status all live — not in separate files, and
+is where its publish date, tags, and draft status all live — not in separate files, and
 not in frontmatter. The format is:
 
 ```
@@ -121,10 +121,9 @@ not in frontmatter. The format is:
   as permanent: retagging or correcting the date later just means renaming the file (see below),
   but changing the slug changes the article's URL.
 - `<DDMMYYYY>` — the publish date, 8 digits, no separators (e.g. `16062026` for 16 June 2026).
-- `<tag1>+<tag2>+…` — zero or more tag ids, joined with `+`. A tag id matching `year-YYYY` is
-  treated as the article's "year"/category, shown as a badge linking to `#category/year-YYYY`;
-  every other tag id is a normal topic tag, shown as a pill linking to `#tag/tag-id`. Omit this
-  whole segment (and its leading `~`) if the article has no tags.
+- `<tag1>+<tag2>+…` — zero or more tag ids, joined with `+`. Each tag id is a normal topic tag,
+  shown as a pill linking to `#tag/tag-id`. Omit this whole segment (and its leading `~`) if the
+  article has no tags.
 
 The separator is `~` (tilde), not a hyphen — deliberately, since a slug is expected to be plain
 kebab-case (single hyphens only) and `~` isn't something you'd type by accident while writing
@@ -143,7 +142,7 @@ Steps:
 
 1. Create the author directory if it doesn't exist: `articles/author/`
 2. Create the Markdown file directly inside it, using the naming convention above, e.g.
-   `articles/author/my-article~16062026~guides+year-2026.md`
+   `articles/author/my-article~16062026~guides+tutorials.md`
 3. Optionally add a cover image to that author's shared `articles/author/media/` folder
    (creating it if needed), and reference it from frontmatter with `image: media/photo.jpg`.
 4. Add a frontmatter block at the top of the Markdown file
@@ -227,13 +226,11 @@ The body text below the frontmatter is rendered as markdown and shown as the bio
 | `#search/linux/page/2` | Same, page 2 |
 | `#author/alice` | All articles by alice, page 1 |
 | `#author/alice/page/2` | All articles by alice, page 2 |
-| `#category/year-2026` | All articles carrying the "year-2026" year tag, page 1 |
-| `#category/year-2026/page/2` | Same, page 2 |
 | `#tag/guides` | All articles tagged "guides", page 1 |
 | `#tag/guides/page/2` | Same, page 2 |
 | `#post/alice/my-article` | Single article at `articles/alice/my-article~DDMMYYYY~tags.md` |
 
-Author names and category tags on each card and article are clickable links to their respective filter views. A search box in the header navigates to `#search/query`.
+Author names and tags on each card and article are clickable links to their respective filter views. A search box in the header navigates to `#search/query`.
 
 ## Customising the layout
 
@@ -348,17 +345,9 @@ demo does.
   ```html
   <nav id="tag-filters" aria-label="Filter by tag"></nav>
   ```
-- **Year list — `#year-filters`** (optional, not used by this repo's own demo but supported the
-  same way): a container that gets filled in with one link per year 2026 down to 2009 that has at
-  least one article, linking to `#category/year-YYYY`. Can appear alongside `#tag-filters` or on
-  its own.
-  ```html
-  <nav id="year-filters" aria-label="Filter by year"></nav>
-  ```
 
-Both filter lists are populated by the same function on every list render, so whichever of
-`#tag-filters`/`#year-filters` is present just gets filled in — omit either one (or both) and
-nothing breaks, the article list and search still work standalone.
+`#tag-filters` is optional — omit it and nothing breaks, the article list and search still work
+standalone.
 
 ### Minimal example
 

css/components/article.css

@@ -64,7 +64,7 @@
     font-style: italic;
 }
 
-/* Author + category row in article header — .author-link and .tag defined in card.css */
+/* Author + tag row in article header — .author-link and .tag defined in card.css */
 .article-meta {
     display: flex;
     align-items: center;

css/components/card.css

@@ -90,7 +90,7 @@
     line-height: 1.65;
 }
 
-/* Author + category row at the bottom of each card */
+/* Author + tag row at the bottom of each card */
 .card-meta {
     display: flex;
     align-items: center;
@@ -115,7 +115,7 @@
     text-decoration: underline;
 }
 
-/* Shared category badge — used in cards and article headers */
+/* Tag pill — also used in cards and article headers */
 .tag {
     display: inline-block;
     background: var(--color-tag-bg);
@@ -134,8 +134,8 @@
     color: #fff;
 }
 
-/* Heading shown above a filtered list (author or category view) */
-.category-heading {
+/* Heading shown above a filtered list (author, tag, or search results) */
+.list-heading {
     font-size: 1.1rem;
     font-weight: 600;
     color: var(--color-text-soft);

js/discovery.js

@@ -144,7 +144,7 @@ function excerpt(content) {
 }
 
 // An article file's own name is the sole authoritative source of its slug,
-// publish date, tags/category, and draft status — see the README's "Adding
+// publish date, tags, and draft status — see the README's "Adding
 // an article" section. Format: `<slug>~<DDMMYYYY>[~tag1+tag2+…].md`,
 // optionally prefixed with `_` for draft. `~` (rather than e.g. "--") is
 // deliberate: a slug is expected to be plain kebab-case, and "~" isn't a
@@ -187,9 +187,6 @@ function buildStub(author, fileName, mtime, authorRoot) {
     if (!parsed) return null;
     const { slug, date, tags, draft } = parsed;
     const path = `${authorRoot}${encodeURIComponent(fileName)}`;
-    // "Category" isn't a separate concept anymore — it's just whichever tag
-    // id (if any) looks like a `year-YYYY` id.
-    const category = tags.find(id => /^year-20\d{2}$/i.test(id)) || null;
 
     return {
         author,
@@ -197,8 +194,6 @@ function buildStub(author, fileName, mtime, authorRoot) {
         hash: `${author}/${slug}`,
         path,
         mtime,
-        category,
-        categoryYear: category ? Number(category.replace(/^year-/i, '')) : null,
         date,
         tags,
         published: !draft,
@@ -336,7 +331,7 @@ async function runCrawl() {
     // mtimes. This is what builds the flat, cross-author list that drives
     // global sorting and pagination — see the plan doc's "keep the flat
     // feed" decision. It's also the *only* per-author network request
-    // indexing ever needs: every stub field (slug, date, tags, category,
+    // indexing ever needs: every stub field (slug, date, tags,
     // draft status) is parsed straight out of each article file's own name
     // (see buildStub/parseArticleFileName) — there's no per-article fetch
     // at index time. The author's own bio file (`<author>.md`) and shared

js/router.js

@@ -6,16 +6,15 @@
 //   first = "search", ends "/page/N"            → search results, page N  (#search/query/page/2)
 //   2 segments, first = "page"                  → all articles, page N  (#page/2)
 //   2 segments, first = "author"                → author filter, page 1  (#author/alice)
-//   2 segments, first = "category" or "tag"     → filtered list, page 1
+//   2 segments, first = "tag"                   → tag filter, page 1
 //   3 segments, first = "post"                  → single article  (#post/alice/my-article)
 //   4 segments, first = "author", third = "page" → author filter, page N  (#author/alice/page/2)
-//   4 segments, first = "category", third = "page" → category filter, page N  (#category/linux/page/2)
 //   4 segments, first = "tag",    third = "page" → tag filter, page N  (#tag/guides/page/2)
 
 import { MARKED_URL } from './config-default.js';
 import { loadTemplates } from './templates.js';
 import { loadStrings, t } from './i18n.js';
-import { loadArticleList, loadAuthorView, loadCategoryView, loadTagView, loadArticle, loadSearch } from './views.js';
+import { loadArticleList, loadAuthorView, loadTagView, loadArticle, loadSearch } from './views.js';
 
 // Dynamically inject marked.js as a plain global script before the app starts.
 function loadScript(url) {
@@ -51,11 +50,9 @@ function router() {
     else if (parts.length === 0)                                                       loadArticleList();
     else if (parts.length === 2 && parts[0] === 'page')                                loadArticleList(null, parsePage(parts[1]));
     else if (parts.length === 2 && parts[0] === 'author')                           loadAuthorView(decodeURIComponent(parts[1]));
-    else if (parts.length === 2 && parts[0] === 'category')                            loadCategoryView(decodeURIComponent(parts[1]));
     else if (parts.length === 2 && parts[0] === 'tag')                              loadTagView(decodeURIComponent(parts[1]));
     else if (parts.length === 3 && parts[0] === 'post')                            loadArticle(parts.slice(1).map(decodeURIComponent).join('/'));
     else if (parts.length === 4 && parts[0] === 'author' && parts[2] === 'page')    loadAuthorView(decodeURIComponent(parts[1]), parsePage(parts[3]));
-    else if (parts.length === 4 && parts[0] === 'category' && parts[2] === 'page')    loadCategoryView(decodeURIComponent(parts[1]), parsePage(parts[3]));
     else if (parts.length === 4 && parts[0] === 'tag'    && parts[2] === 'page')    loadTagView(decodeURIComponent(parts[1]), parsePage(parts[3]));
     else                                                                               loadArticleList();
 }
@@ -77,7 +74,7 @@ function init() {
         // Fail with a clear, catchable message here rather than a cryptic
         // uncaught TypeError the first time showListView()/showArticleView()
         // run — both mount points are a hard requirement, unlike
-        // search/tag/year, which are optional.
+        // search/tag, which are optional.
         if (!document.getElementById('list-view') || !document.getElementById('article-view')) {
             throw new Error('Missing required #list-view and/or #article-view element — see the "Embedding in an existing page" section of the README.');
         }

js/views.js

@@ -48,7 +48,6 @@ function filterLabel(filter) {
     if (!filter) return '';
     if (filter.type === 'author') return t('filterAuthor', { value: filter.value });
     if (filter.type === 'tag') return t('filterTag', { value: filter.value });
-    if (filter.type === 'category') return t('filterYear', { value: filter.value.replace(/^year-/i, '') });
     return filter.value;
 }
 
@@ -103,47 +102,16 @@ function renderFilterLink(label, href, count, active = false) {
     return link;
 }
 
-// Years and tags render independently — either `<nav>` can be absent from
-// the page (e.g. a site that only wants tag filtering, like this project's
-// own index.html) without the other silently stopping too. Whichever
-// section renders first gets the "all articles" reset link, so it's never
-// lost just because the years nav isn't on the page.
 function renderFilterNavigation(articles, activeFilter = null) {
-    const years = document.getElementById('year-filters');
     const tags = document.getElementById('tag-filters');
-    if (!years && !tags) return;
-    const allArticlesLink = () => renderFilterLink(t('filterAllArticles'), '#', articles.length, !activeFilter);
-
-    if (years) {
-        years.innerHTML = '';
-        const yearCounts = new Map();
-        articles.forEach(article => {
-            const year = Number(article.categoryYear);
-            if (year) yearCounts.set(year, (yearCounts.get(year) || 0) + 1);
-        });
-        const yearList = document.createElement('div');
-        yearList.className = 'filter-list';
-        yearList.appendChild(allArticlesLink());
-        for (let year = 2026; year >= 2009; year -= 1) {
-            const count = yearCounts.get(year) || 0;
-            const active = activeFilter?.type === 'category' && activeFilter.value.toLowerCase() === `year-${year}`;
-            yearList.appendChild(renderFilterLink(t('yearLabel', { year }), `#category/year-${year}`, count, active));
-        }
-        years.appendChild(yearList);
-    }
-
-    if (tags) {
+    if (!tags) return;
     tags.innerHTML = '';
     const tagCounts = new Map();
     articles.forEach(article => (article.tags || []).forEach(tag => tagCounts.set(tag, (tagCounts.get(tag) || 0) + 1)));
     const tagList = document.createElement('div');
     tagList.className = 'filter-list';
-        if (!years) tagList.appendChild(allArticlesLink());
-        // A `year-YYYY` id is also a normal entry in `article.tags` (that's how
-        // it's recognised as the category — see buildStub() in discovery.js),
-        // but it belongs in the years nav above, not duplicated here.
+    tagList.appendChild(renderFilterLink(t('filterAllArticles'), '#', articles.length, !activeFilter));
     [...tagCounts.keys()]
-            .filter(id => !/^year-20\d{2}$/i.test(id))
         .sort((a, b) => a.localeCompare(b, getLocale()))
         .forEach(id => {
             const active = activeFilter?.type === 'tag' && activeFilter.value === id;
@@ -151,7 +119,6 @@ function renderFilterNavigation(articles, activeFilter = null) {
         });
     tags.appendChild(tagList);
 }
-}
 
 // Builds the #post/author/slug hash for an article, encoding each segment
 // individually. article.hash itself (a raw, unencoded "author/slug") is only
@@ -164,17 +131,11 @@ function postHref(article) {
     return `#post/${encodeURIComponent(article.author)}/${encodeURIComponent(article.slug)}`;
 }
 
-// Shared between renderCard() and loadArticle() — date, reading-time, and
-// the category/year badge are populated identically in both places.
-function applyArticleMetaFields(field, { date, readingTime, category, categoryYear }) {
+// Shared between renderCard() and loadArticle() — date and reading-time are
+// populated identically in both places.
+function applyArticleMetaFields(field, { date, readingTime }) {
     setField(field('date'), date, (time, value) => { time.dateTime = String(value); time.textContent = formatDate(value); });
     setField(field('reading-time'), readingTime, (time, value) => { time.textContent = t('readingTime', { minutes: value }); });
-    // A post only counts as a "category" when one of its directory-name
-    // tags happens to name a year — not every article has one.
-    setField(field('category'), category, (categoryEl, value) => {
-        categoryEl.textContent = t('yearLabel', { year: categoryYear });
-        categoryEl.href = `#category/${encodeURIComponent(value)}`;
-    });
 }
 
 function renderCard(article) {
@@ -250,7 +211,7 @@ function renderArticleListBody(view, { total, pageArticles, page, pages, filter,
     renderCrawlHealthWarning(view, done);
     if (heading) {
         const headingElement = document.createElement('h2');
-        headingElement.className = 'category-heading';
+        headingElement.className = 'list-heading';
         headingElement.textContent = heading;
         view.appendChild(headingElement);
     }
@@ -283,19 +244,16 @@ export async function loadArticleList(filter = null, page = 1) {
     const applyFilter = allArticles => {
         renderFilterNavigation(allArticles, filter);
         if (!filter) return allArticles;
-        return allArticles.filter(article => {
-            if (filter.type === 'tag') return article.tags.includes(filter.value);
+        if (filter.type === 'tag') return allArticles.filter(article => article.tags.includes(filter.value));
         // Author names are exact, case-sensitive directory names (used
-            // as-is for paths and profile lookups elsewhere) — comparing
-            // them case-insensitively here could merge two distinctly-named
-            // author directories that differ only in case.
-            if (filter.type === 'author') return article.author === filter.value;
-            return String(article[filter.type] || '').toLowerCase() === filter.value.toLowerCase();
-        });
+        // as-is for paths and profile lookups elsewhere) — comparing them
+        // case-insensitively here could merge two distinctly-named author
+        // directories that differ only in case.
+        return allArticles.filter(article => article.author === filter.value);
     };
 
-    // Sorting/filtering/pagination all work on stubs alone (tags, date,
-    // category — none of that needs a content fetch). Only the current
+    // Sorting/filtering/pagination all work on stubs alone (tags, date —
+    // none of that needs a content fetch). Only the current
     // page's cards need real content, so only that slice gets hydrated —
     // this is what keeps a large site's list fast: the rest of the tree's
     // markdown is never fetched until the user actually pages to it.
@@ -393,7 +351,6 @@ export async function loadAuthorView(author, page = 1) {
     }
 }
 
-export const loadCategoryView = (category, page = 1) => loadArticleList({ type: 'category', value: category }, page);
 export const loadTagView = (tag, page = 1) => loadArticleList({ type: 'tag', value: tag }, page);
 
 // How many stubs to hydrate-and-check per scanning round (see loadSearch
@@ -425,7 +382,7 @@ export async function loadSearch(query, page = 1) {
     const filter = { type: 'search', value: query };
     try {
         const needle = query.toLocaleLowerCase(getLocale());
-        const matchesQuery = article => [article.title, article.description, article.author, article.authorName, article.category, ...article.tags]
+        const matchesQuery = article => [article.title, article.description, article.author, article.authorName, ...article.tags]
             .some(value => String(value || '').toLocaleLowerCase(getLocale()).includes(needle));
 
         const stubs = await discoverArticles();
@@ -546,7 +503,7 @@ export async function loadArticle(hash) {
         field('title').textContent = meta.title || article.slug;
         // Publish date comes from the article file's own name (already
         // resolved onto `article.date`), not the raw frontmatter.
-        applyArticleMetaFields(field, { date: article.date, readingTime, category: article.category, categoryYear: article.categoryYear });
+        applyArticleMetaFields(field, { date: article.date, readingTime });
         setField(field('description'), meta.description, (description, value) => { description.textContent = value; });
         const image = field('image');
         if (coverUrl) { image.src = coverUrl; image.alt = meta.title || article.slug; } else image.closest('figure')?.remove();

strings/cs.json

@@ -5,9 +5,7 @@
 
   "filterAuthor": "Autor: {value}",
   "filterTag": "Štítek: {value}",
-  "filterYear": "Ročník: {value}",
   "filterAllArticles": "Všechny články",
-  "yearLabel": "Ročník {year}",
 
   "paginationLabel": "Stránkování",
   "paginationPrevious": "Předchozí",

strings/en.json

@@ -5,9 +5,7 @@
 
   "filterAuthor": "Author: {value}",
   "filterTag": "Tag: {value}",
-  "filterYear": "Year: {value}",
   "filterAllArticles": "All articles",
-  "yearLabel": "Year {year}",
 
   "paginationLabel": "Pagination",
   "paginationPrevious": "Previous",

strings/sk.json

@@ -5,9 +5,7 @@
 
   "filterAuthor": "Autor: {value}",
   "filterTag": "Štítok: {value}",
-  "filterYear": "Ročník: {value}",
   "filterAllArticles": "Všetky články",
-  "yearLabel": "Ročník {year}",
 
   "paginationLabel": "Stránkovanie",
   "paginationPrevious": "Predchádzajúca",

templates/article.html

@@ -8,7 +8,6 @@
         <p class="description" data-field="description"></p>
         <div class="article-meta">
             <a class="author-link" data-field="author" href=""></a>
-            <a class="tag" data-field="category" href=""></a>
             <span class="tag-list" data-field="tags"></span>
         </div>
     </header>

templates/card.html

@@ -11,7 +11,6 @@
         <p data-field="description"></p>
         <div class="card-meta">
             <a class="author-link" data-field="author" href=""></a>
-            <a class="tag" data-field="category" href=""></a>
             <span class="tag-list" data-field="tags"></span>
         </div>
     </div>