directory: hide the clients line at 0, and profile links are logo only

Clients line: a count of 0 (or an absent count) now renders NO line at all —
never "0 clients", never a dash. The >=1 rules (the plural, the plain number)
are unchanged. Same rule in the runtime renderer and in build-directory.py.

Links row: LinkedIn/GitHub/Upwork/Fiverr now render as LOGO ONLY. The four marks
are one uniform monochrome set (Simple Icons v13, 24x24, single-path), inlined so
the row makes no request and each mark inherits currentColor. Self-hosted copies
in static/icons/. Each link keeps its accessible name (aria-label + title, e.g.
"GitHub profile"); the inline SVG is aria-hidden + focusable=false; the hit area
is 36x36 around a 24px mark, with a visible focus ring.

A null/blank link value still renders no anchor (no empty icon).

static/icons/README.md

@@ -0,0 +1,22 @@
+# static/icons — the profile-link icon set
+
+Four monochrome brand marks shown in the freelancer directory card's links row
+(`/odoo-community-developers/`): LinkedIn, GitHub, Upwork, Fiverr.
+
+**Source:** [Simple Icons](https://simpleicons.org) v13 — one uniform set, so the four
+share one visual language by construction: the same 24 × 24 grid, the same internal
+padding, the same monochrome mass, single-path art. Nothing here is hand-drawn and
+nothing is fetched from a third party at runtime.
+
+**How the page uses them.** The card inlines the same path data (see `LINK_ICONS` in the
+page's script and in `work/build-directory.py`), so the links row makes **zero requests**
+and each mark inherits the link's `currentColor`. These files are the self-hosted,
+drop-in copy of that set — identical geometry — for any host that prefers a file over an
+inline `<svg>`.
+
+**Brand rule.** A brand mark is never redrawn and never restyled beyond a single
+monochrome fill. The one styling the page applies is `fill="currentColor"`.
+
+The `role`/`aria-label` here are for standalone use; the card strips them and marks the
+inline SVG `aria-hidden="true" focusable="false"`, putting the accessible name on the
+link (`aria-label` + `title`, e.g. "GitHub profile").

static/icons/fiverr.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="Fiverr"><path fill="currentColor" d="M23.004 15.588a.995.995 0 1 0 .002-1.99.995.995 0 0 0-.002 1.99zm-.996-3.705h-.85c-.546 0-.84.41-.84 1.092v2.466h-1.61v-3.558h-.684c-.547 0-.84.41-.84 1.092v2.466h-1.61v-4.874h1.61v.74c.264-.574.626-.74 1.163-.74h1.972v.74c.264-.574.625-.74 1.162-.74h.527v1.316zm-6.786 1.501h-3.359c.088.546.43.858 1.006.858.43 0 .732-.175.83-.487l1.425.4c-.351.848-1.22 1.364-2.255 1.364-1.748 0-2.549-1.355-2.549-2.515 0-1.14.703-2.505 2.45-2.505 1.856 0 2.471 1.384 2.471 2.408 0 .224-.01.37-.02.477zm-1.562-.945c-.04-.42-.342-.81-.889-.81-.508 0-.81.225-.908.81h1.797zM7.508 15.44h1.416l1.767-4.874h-1.62l-.86 2.837-.878-2.837H5.72l1.787 4.874zm-6.6 0H2.51v-3.558h1.524v3.558h1.591v-4.874H2.51v-.302c0-.332.235-.536.606-.536h.918V8.412H2.85c-1.162 0-1.943.712-1.943 1.755v.4H0v1.316h.908v3.558z"/></svg>

static/icons/github.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="GitHub"><path fill="currentColor" d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12"/></svg>

static/icons/linkedin.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="LinkedIn"><path fill="currentColor" d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433c-1.144 0-2.063-.926-2.063-2.065 0-1.138.92-2.063 2.063-2.063 1.14 0 2.064.925 2.064 2.063 0 1.139-.925 2.065-2.064 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>

static/icons/upwork.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" role="img" aria-label="Upwork"><path fill="currentColor" d="M18.561 13.158c-1.102 0-2.135-.467-3.074-1.227l.228-1.076.008-.042c.207-1.143.849-3.06 2.839-3.06 1.492 0 2.703 1.212 2.703 2.703-.001 1.489-1.212 2.702-2.704 2.702zm0-8.14c-2.539 0-4.51 1.649-5.31 4.366-1.22-1.834-2.148-4.036-2.687-5.892H7.828v7.112c-.002 1.406-1.141 2.546-2.547 2.548-1.405-.002-2.543-1.143-2.545-2.548V3.492H0v7.112c0 2.914 2.37 5.303 5.281 5.303 2.913 0 5.283-2.389 5.283-5.303v-1.19c.529 1.107 1.182 2.229 1.974 3.221l-1.673 7.873h2.797l1.213-5.71c1.063.679 2.285 1.109 3.686 1.109 3 0 5.439-2.452 5.439-5.45 0-3-2.439-5.439-5.439-5.439z"/></svg>