chore: voice + filename hygiene + wave-4 state wrap

Maintainer-voice sweep across `src/`. ~190 references to the
maintainer by first name in code comments and JSDoc neutralised to
"the maintainer", "the live tenant", "users", or "the user" depending
on context. Three sed passes covering ~50 distinct patterns
(`Marc reported`, `Marc wants`, `Marc kept`, `Marc rolled back`, etc.).
Test fixtures (`displayName: "Marc B."`, `username: "marc"`,
`<HeroStrip userName="Marc">`) kept as opaque test data per the brief.

CHANGELOG normalisation. The v1.4.14 + v1.4.15 entries paired a
German bullet with its English translation by historical design — the
in-app copy is English-default and the user docs are English, so the
mixed-language style was a holdover from the early-marathon notes.
A one-off node script extracted the `_..._` English paragraph from
each bilingual bullet and rewrote the entry as that text. ~44 bullets
reduced; one Docs bullet that lost a leading word in the regex
fixed by hand.

CLAUDE.md → CONTRIBUTING-AI.md rename so the filename is no longer
AI-vendor-specific. `CONTRIBUTING.md` reference updated. `AGENTS.md`
stays in place for multi-agent compatibility (the conventions doc is
shared with Codex / Cursor / etc.).

Wave-4 state wrap. STATE.md now records C1–C5 + D + D2 as complete;
v1421-backlog.md grew a "Closed in v1.4.22" header listing the 20
items the marathon landed; `.planning/phase-W4-report.md` documents
the per-commit decisions, test deltas, and the 23 items deferred to
v1.4.23 with reasoning.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/admin/__tests__/admin-shell.test.tsx

@@ -7,7 +7,7 @@ import { renderToStaticMarkup } from "react-dom/server";
  * is always wider than a 393 CSS-px (Pixel-5) viewport, so v1.4.18
  * phase A2 added the `no-scrollbar` class to the strip — Chromium /
  * WebKit otherwise paint an always-on horizontal scrollbar at the top
- * of every admin page, which Marc kept mis-attributing to the
+ * of every admin page, which the maintainer kept mis-attributing to the
  * `/admin/api-tokens` table card right below it. Three previous fix
  * attempts (v1.4.15 column-hide, v1.4.16 mobile-card-list, then this
  * one) all targeted the table while the bar lived in the shell.

src/components/admin/__tests__/api-token-no-collapse.test.tsx

@@ -7,7 +7,7 @@ import { renderToStaticMarkup } from "react-dom/server";
  * v1.4 shared-admin page where 13 sections lived on one route; in
  * v1.5 every section has its own dedicated route, so collapsing the
  * only card on `/admin/api-tokens` hides the entire surface and
- * confused Marc more than it helped.
+ * confused the maintainer more than it helped.
  */
 
 vi.mock("next/navigation", () => ({

src/components/admin/__tests__/api-token-overview-responsive.test.tsx

@@ -94,7 +94,7 @@ describe("ApiTokenOverviewSection — responsive", () => {
   it("mobile card-list has no overflow-x-auto wrapper", () => {
     const html = render();
     // Mobile cards must let content wrap within the card rather than
-    // forcing a scroll container — that was the v1.4.15 bug Marc
+    // forcing a scroll container — that was the v1.4.15 bug the maintainer
     // re-reported. Confirm there's no overflow-x-auto INSIDE the
     // mobile <ul>.
     const mobileMatch = html.match(/<ul[^>]*md:hidden[^>]*>([\s\S]*?)<\/ul>/);

src/components/admin/__tests__/api-token-truncate.test.tsx

@@ -4,13 +4,13 @@ import { renderToStaticMarkup } from "react-dom/server";
 /**
  * v1.4.19 A7 — `/admin/api-tokens` 4th-attempt scrollbar fix.
  *
- * Marc reported a "minimaler Scrollbar" still painting at the
+ * the maintainer reported a "minimaler Scrollbar" still painting at the
  * bottom-right of the api-tokens page, even after the v1.4.18 phase
  * A2 mobile-strip `no-scrollbar` fix. The remaining culprits are
  * inside the section card itself: long token names, long usernames,
  * and long permission strings can each push their parent past the
  * viewport. Cumulatively this leaves the page in an "almost-fits"
- * state where the visible scrollbar Marc sees is the page-level main
+ * state where the visible scrollbar the maintainer sees is the page-level main
  * scroll picking up a fraction of pixels of horizontal scroll spill
  * from the children.
  *

src/components/admin/__tests__/status-card-grid.test.tsx

@@ -3,7 +3,7 @@ import { renderToStaticMarkup } from "react-dom/server";
 
 /**
  * v1.4.15 phase A2: the `/admin` overview no longer renders the
- * `StatusCardGrid` (the section-card grid Marc described as redundant
+ * `StatusCardGrid` (the section-card grid the maintainer described as redundant
  * with the sidebar nav). The status-card component itself was removed
  * from the codebase. This test guards the *new* overview composition:
  * a welcome card, the system snapshot, and the recent-audit preview.

src/components/admin/admin-shell.tsx

@@ -153,7 +153,7 @@ export function AdminShell({ active, children }: AdminShellProps) {
           painted scrollbar at the top of every admin page; the
           horizontal swipe + keyboard arrow scrolling still work, the
           bar just doesn't draw. Without this the 13-section strip
-          would render an always-on scrollbar that Marc kept
+          would render an always-on scrollbar that the maintainer kept
           mis-attributing to the api-tokens table below it. */}
       <nav
         aria-label={t("admin.shell.sectionsNav")}

src/components/admin/api-token-overview-section.tsx

@@ -20,7 +20,7 @@ import { type ApiTokenInfo } from "./_shared";
  *
  * v1.4.19 phase A7 (4th attempt) — earlier fixes (column-hide,
  * mobile card-list, mobile-strip `no-scrollbar`) cleared every
- * scrollbar Marc reported except a residual painted bar he kept
+ * scrollbar the maintainer reported except a residual painted bar he kept
  * seeing at the bottom-right. Production probe confirmed no
  * remaining horizontal-overflow culprits, but the cards still
  * carried `break-all` next to `truncate` (dead code; `white-space:
@@ -104,7 +104,7 @@ export function ApiTokenOverviewSection() {
   // section route. The previous pattern carried a "Collapse / Expand"
   // toggle as an escape hatch from the v1.4 shared admin page where
   // 13 sections lived together, but on a route that only renders this
-  // one card the toggle hides the entire surface. Marc reported it
+  // one card the toggle hides the entire surface. the maintainer reported it
   // as "sinnlos" — gone.
   const { data: tokens, isLoading } = useQuery({
     queryKey: ["admin", "tokens"],