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

components/Hero.tsx

@@ -1,12 +1,12 @@
 'use client'
 
 import { useRef } from 'react'
-import type { Resume } from '@/lib/types'
+import type { Portfolio, Resume } from '@/lib/types'
 import styles from './hero.module.css'
 
-type Props = { resume: Resume; mailHref: string; showProjects: boolean }
+type Props = { resume: Resume; portfolio: Portfolio; mailHref: string; showProjects: boolean }
 
-export default function Hero({ resume, mailHref, showProjects }: Readonly<Props>) {
+export default function Hero({ resume, portfolio, mailHref, showProjects }: Readonly<Props>) {
   const hero = useRef<HTMLElement>(null)
 
   // The floor sways a couple of degrees with the pointer, like nudging the viewport.
@@ -28,7 +28,10 @@ export default function Hero({ resume, mailHref, showProjects }: Readonly<Props>
         <p className={styles.bio}>{resume.bio}</p>
         <div className={styles.actions}>
           {showProjects && <a className={`${styles.button} ${styles.primary}`} href="#projects">See projects</a>}
-          <a className={`${styles.button} ${showProjects ? styles.secondary : styles.primary}`} href={mailHref}>Email me</a>
+          <a className={`${styles.button} ${showProjects ? styles.secondary : styles.primary}`} href={portfolio.href} target="_blank" rel="noreferrer">
+            Full portfolio
+          </a>
+          <a className={styles.link} href={mailHref}>Email me</a>
         </div>
       </div>
       <div className={styles.stage} aria-hidden="true">