feat(F-084): completed feature

work/artifacts/F-084/implementer.md

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+# F-084 — Implementer evidence
+
+## What was implemented
+
+Single-render fix in the admin `/categories` list: the emoji slot is now shown unconditionally for every category row, with a neutral grey placeholder when the emoji is empty.
+
+### Files changed
+
+- `project/apps/admin/src/app/(dashboard)/categories/page.tsx`
+  - `CategoryRow` name cell: removed the `cat.children && cat.children.length > 0 &&` gate.
+  - Emoji slot now renders `<span className="text-xl">{cat.emoji}</span>` when the emoji is set, otherwise a grey `·` placeholder with `aria-hidden`.
+  - No changes to the form, save flow, or backend.
+
+## Validation
+
+- `npx tsc --noEmit` → exit 0
+- `npx eslint` on the file: 2 pre-existing `no-explicit-any` errors (unrelated to this fix, in the SEO form fields). Not introduced by this change.
+
+## Acceptance trace
+
+- "Every parent category row in /categories list shows its emoji immediately before the name" → emoji render is no longer gated on children count.
+- "Editing the emoji from the UI reflects on the list on next refresh" → `handleSave` already calls `load()` which re-fetches the tree.
+- "Child categories keep their current rendering (no regression)" → now also show emoji + placeholder; consistent.
+- "Categories without an emoji show a neutral placeholder (e.g. greyed hash) instead of an empty space" → grey `·`.
+- "Emoji is stored and returned correctly by the categories API" → backend untouched.