Add a prominent link to the full portfolio

The top bar's accent button becomes Portfolio (Email stays in the hero and
the contact band), the hero gets a Full portfolio button, and the project
list ends with a large block linking to it. The link points at Gitea's list
of repos with the portfolio topic; the sync supplies the count and the
resume file can override the target and label. Also eases the display
weight and tracking of the name in the dark theme.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XtcZtnG4GQA1d6mW5PNrS9

README.md

@@ -8,6 +8,7 @@ Live at **https://shanaty.ru/resume/**. A static Next.js site whose content is r
 |---|---|
 | Name, role, bio, skills, experience, education, languages, contacts | [`data/resume.json`](data/resume.json) in this repo (`main` branch) |
 | Projects | Public repos of `Emil_Shanaty` on Gitea that carry the topic **`resume`** |
+| The "full portfolio" link and its project count | Gitea's public list of repos with the topic `portfolio` (button in the top bar, in the hero and after the project list) |
 | Project picture | Optional `demo.png`, `demo.jpg`, `demo.gif` or `demo.webp` in the root of that repo |
 | Project title, kind, description, highlights, tech tags, links, order | Optional `resume-card.json` in the root of that repo |
 
@@ -38,6 +39,8 @@ The layout adapts to any number of projects: rows of two or three plates with a
 
 ## Editing the text
 
+To point the portfolio button somewhere else (or rename it), add `"portfolio": { "href": "https://...", "label": "All work" }` to `data/resume.json`.
+
 Edit `data/resume.json`, commit and **push to Gitea** (`git push gitea main`). No rebuild or deploy is needed.
 
 ## Development