team: drop Human Generated, and draw the nav caret instead of typing it

[yorkerhodes3]

What

Two content-layer fixes to /team and the site header.

1. Remove Human Generated by BlockApps

Dropped from the organisations grid — from about.clients.items and from teamOrgOrder. Its BACKLOG entry for a missing logo goes with it, and the stale "BlockApps already linked" note is corrected.

2. Draw the nav dropdown caret instead of typing it

Reported as a font inconsistency in the header: Home / Portfolio ▾ / Team did not match on spacing, style, or apparent typeface.

The caret was the character ▾ (U+25BE). next/font subsets Space Mono to latin, latin-ext and vietnamese and emits a matching unicode-range — and U+25BE falls outside all three. The browser was therefore never permitted to use Space Mono for it and substituted whatever the operating system supplies, so it rendered in a different typeface, at a different optical size, on its own baseline, immediately beside Space Mono text.

It is now an inline SVG, matching how LinkedInLink and ThemeToggle already draw their icons. That removes the dependency on the visitor's platform entirely.

▾ appeared only in SiteHeader.tsx, so this creates no inconsistency anywhere else.

Reviewer notes

The rest of the symbols are deliberately left alone. The same subsetting affects → ← ↗ ▶ ▸ ✕ ● ◦ ─ ＋ and 📖. None is broken — they all fall back, so they are at least consistent with each other. Converting one arrow at a time is exactly what would break that, so they are recorded as UPD-017 for a single deliberate pass rather than changed piecemeal.

"Portfolio" being brighter than its siblings is not a bug. isActive intentionally keeps Portfolio active across its sub-tabs (/demos, /publications, /media, /newsletter). The active item is text-foreground against text-muted — on a dark ground that reads as a weight difference, but both are weight 400.

On the OSCE / ODIHR logo — there is nothing to recover. Checked properly rather than assumed:

• git log --diff-filter=D over public/logos returns zero deletions — no logo file has ever been removed from this repository.
• The entry has carried logo: "" since Carolina added it in a30def40 (2026-07-21), and its about text and url are byte-identical to that commit. Nothing was lost.
• A code search across every repository in the organisation finds only text references.

So it needs a file sourced from OSCE/ODIHR, not restored. I did not grab the emblem off osce.org: it is a protected intergovernmental emblem with its own usage rules, which is a different question from the company wordmarks already in public/logos/. Recorded in BACKLOG §2.

Verification

• Lint, typecheck, content invariants, image budgets, and build all pass locally.
• Confirmed in the built output: U+25BE is gone, the SVG is emitted, Human Generated is absent from /team, and OSCE is still present and unchanged.
• Snapshot integrity checked explicitly — 78 pages, 6,263 asset references, 0 missing. Worth stating because an earlier attempt at the snapshot cleanup deleted three legitimately-new JS/CSS chunks along with the platform-shaped __next.* files; that was caught by this check and redone with a correct filter.
• The __next.* prefetch payloads are left as-is, as in the previous snapshot commit (UPD-004).