diff --git a/src/apps/officer-web/Screens/Dashboard/Layout/DashboardLayout.tsx b/src/apps/officer-web/Screens/Dashboard/Layout/DashboardLayout.tsx
index b3491b8d..60f27099 100644
--- a/src/apps/officer-web/Screens/Dashboard/Layout/DashboardLayout.tsx
+++ b/src/apps/officer-web/Screens/Dashboard/Layout/DashboardLayout.tsx
@@ -8,6 +8,7 @@ import { Background } from './Background';
 import { Header } from './Header';
 import { Dock, CORE_DOCK_ITEMS, dockItemsFromPlugins, defaultDockPaths } from './Dock';
 import { Spotlight } from './Spotlight/Spotlight';
+import { ShortcutsModal } from './ShortcutsModal';
 import { useIsTouch } from './useIsTouch';
 import { usePageTitleSync } from '@/state/usePageTitle';
 import { RouteGate } from './RouteGate';
@@ -51,6 +52,9 @@ export function DashboardLayout({ children }: DashboardLayoutProps) {
       {/* Outside the content region on purpose, like the header and the dock: whatever a screen is doing
           — maximised panel, error boundary, mid-navigation — ctrl-space still gets you off it. */}
       <Spotlight />
+      {/* Outside the content region for the same reason Spotlight is: ctrl+? has to work from a maximised
+          panel, an error boundary, or mid-navigation. */}
+      <ShortcutsModal />
       {/* overflow-CLIP, not hidden: `hidden` still makes this a scroll container, and the nav Dock —
           absolute, parked below the bottom edge by translateY while hidden — adds its transformed box to
           the scrollable overflow. So clicking a link let the browser scroll this section ~70px to reveal
diff --git a/src/apps/officer-web/Screens/Dashboard/Layout/Header/ThemeSwitcher.tsx b/src/apps/officer-web/Screens/Dashboard/Layout/Header/ThemeSwitcher.tsx
index 0c1c7b86..1a1694e8 100644
--- a/src/apps/officer-web/Screens/Dashboard/Layout/Header/ThemeSwitcher.tsx
+++ b/src/apps/officer-web/Screens/Dashboard/Layout/Header/ThemeSwitcher.tsx
@@ -23,7 +23,7 @@ const {
  *
  * ── The overlay ──
  *
- * `ctrl+alt+space` opens a list in the middle of the screen; `j`/`k` move through it and `l` applies the
+ * `ctrl+shift+space` opens a list in the middle of the screen; `j`/`k` move through it and `l` applies the
  * focused theme to the app BEHIND it. That is the whole idea, and it is why this is a portal over a
  * translucent backdrop rather than a modal dialog: you are meant to watch the application change while
  * you browse, so as little of it as possible should be covered.
@@ -90,7 +90,7 @@ export const ThemeSwitcher = () => {
           <div className="shrink-0 border-b border-border px-2 py-1.5">
             <DropdownMenuLabel className="px-0 py-0 text-xs font-normal leading-relaxed text-muted-foreground">
               <span className="block">ctrl+shift+←/→ cycle · ctrl+shift+space browse</span>
-              <span className="block">alt+space to search every theme by name</span>
+              <span className="block">ctrl+? for every shortcut</span>
             </DropdownMenuLabel>
             <button
               type="button"
diff --git a/src/apps/officer-web/Screens/Dashboard/Layout/ShortcutsModal.tsx b/src/apps/officer-web/Screens/Dashboard/Layout/ShortcutsModal.tsx
new file mode 100644
index 00000000..3a79c5a9
--- /dev/null
+++ b/src/apps/officer-web/Screens/Dashboard/Layout/ShortcutsModal.tsx
@@ -0,0 +1,81 @@
+import { useEffect, useState } from 'react';
+import { Keyboard } from 'lucide-react';
+import { isShortcutsChord, SHORTCUT_SECTIONS } from '@/state/shortcuts';
+
+/*
+  `Ctrl+?` — every shortcut the shell owns, on one screen.
+
+  Ported in shape from `vimazing`, where the controls are declared as data and the help screen renders them.
+  Its renderer was a recursive `any` walk over arbitrary content, which is right for a game whose help also
+  carries rules and scoring; here the content is one shape, so the renderer is typed and boring and the
+  interesting part is `state/shortcuts.ts`.
+
+  Card per section, two columns on anything wider than a phone — the same arrangement vimazing used for its
+  controls grid, and for the same reason: these are short lists that read badly as one long column.
+*/
+
+const Row = ({ keys, description }: { keys: string; description: string }) => (
+  <div className="flex items-baseline gap-3 py-1">
+    {/* Fixed width, tabular: the chords line up into a column you can scan, which is the whole point of
+        putting them on the left. */}
+    <kbd className="w-32 shrink-0 rounded border border-border bg-muted/60 px-1.5 py-0.5 text-center font-mono text-[11px] text-foreground/90">
+      {keys}
+    </kbd>
+    <span className="text-sm text-muted-foreground">{description}</span>
+  </div>
+);
+
+export const ShortcutsModal = () => {
+  const [open, setOpen] = useState(false);
+
+  useEffect(() => {
+    const onKey = (ev: KeyboardEvent) => {
+      if (isShortcutsChord(ev)) {
+        // No focus check: `Ctrl+?` types nothing in a text field, and a help list you cannot open from the
+        // composer is a help list you cannot open — the lesson from the Spotlight guard.
+        ev.preventDefault();
+        setOpen((was) => !was);
+        return;
+      }
+      if (ev.key === 'Escape' && open) setOpen(false);
+    };
+    // Capture, so a panel with its own key handling cannot swallow it first.
+    window.addEventListener('keydown', onKey, true);
+    return () => window.removeEventListener('keydown', onKey, true);
+  }, [open]);
+
+  if (!open) return null;
+
+  return (
+    <div
+      className="fixed inset-0 z-[901] flex items-start justify-center bg-black/50 pt-[8vh] backdrop-blur-sm"
+      onMouseDown={() => setOpen(false)}
+    >
+      <div
+        className="flex max-h-[80vh] w-[min(94vw,860px)] flex-col overflow-hidden rounded-2xl border border-border bg-background/95 shadow-2xl"
+        onMouseDown={(ev) => ev.stopPropagation()}
+      >
+        <div className="flex shrink-0 items-center gap-2 border-b border-border px-5 py-3">
+          <Keyboard className="h-4 w-4 text-muted-foreground" />
+          <h2 className="text-sm font-semibold">Keyboard shortcuts</h2>
+          <span className="ml-auto text-xs text-muted-foreground">Ctrl+? · Esc to close</span>
+        </div>
+
+        {/* Only this scrolls — the header stays, for the same reason the theme dropdown's does. */}
+        <div className="grid min-h-0 flex-1 gap-5 overflow-y-auto p-5 sm:grid-cols-2">
+          {SHORTCUT_SECTIONS.map((section) => (
+            <section key={section.title} className="rounded-xl border border-border bg-muted/20 p-4">
+              <h3 className="text-xs font-semibold uppercase tracking-wide text-foreground/80">{section.title}</h3>
+              {section.note && <p className="mt-1 text-[11px] leading-snug text-muted-foreground">{section.note}</p>}
+              <div className="mt-2">
+                {section.shortcuts.map((shortcut) => (
+                  <Row key={shortcut.keys} keys={shortcut.keys} description={shortcut.description} />
+                ))}
+              </div>
+            </section>
+          ))}
+        </div>
+      </div>
+    </div>
+  );
+};
diff --git a/src/apps/officer-web/Screens/Dashboard/Layout/Spotlight/Spotlight.tsx b/src/apps/officer-web/Screens/Dashboard/Layout/Spotlight/Spotlight.tsx
index db417c74..6d5cec5b 100644
--- a/src/apps/officer-web/Screens/Dashboard/Layout/Spotlight/Spotlight.tsx
+++ b/src/apps/officer-web/Screens/Dashboard/Layout/Spotlight/Spotlight.tsx
@@ -11,12 +11,18 @@ import { useSpotlightItems, type SpotlightItem } from './useSpotlightItems';
 //
 // ── Keyboard first, and the trigger ──
 //
-// `alt-space`, and ONLY that. It went ctrl-space → shift-space → alt-space, and each move was the owner
-// telling us what the chord actually collides with on the machine he uses:
+// `ctrl-space`, and ONLY that. It has now been ctrl-space → shift-space → alt-space → ctrl-space, and every
+// move was the owner naming a real collision on the machine he uses:
 //
-//   ctrl-space   focuses the address bar in Brave
-//   shift-space  types a space — see below, this was the real problem
-//   alt-space    taken by the window menu, and the owner rebound it rather than give up the chord
+//   shift-space  types a space — see below, this was the worst of them
+//   alt-space    the GNOME window menu. He rebound the OS to keep it, disliked what he rebound it TO, and
+//                asked for the OS binding back — so the app moves rather than the desktop.
+//   ctrl-space   chosen deliberately on the way back. It was ruled out on 2026-08-20 as "focuses the
+//                address bar in Brave"; that observation was made before anything preventDefault'ed it, and
+//                the owner would rather rebind a browser than his window manager.
+//
+// If the address bar still steals it, the key never reaches this handler and nothing here can help — the fix
+// is in Brave, not in this file. Worth knowing WHICH of the two it is before changing anything.
 //
 // **Shift-space was never a good choice**, and that is why it did not last a day. It is a real key
 // combination inside a text field: it types a space, and people hold shift through one more often than
@@ -24,7 +30,7 @@ import { useSpotlightItems, type SpotlightItem } from './useSpotlightItems';
 // — which is where focus usually is, the chat composer — so opening Spotlight meant clicking out first.
 // A launcher you have to prepare for is not a launcher.
 //
-// Alt-space has no meaning inside a text field, so there is NO focus check at all. The guard shift-space
+// Ctrl-space has no meaning inside a text field, so there is NO focus check at all. The guard shift-space
 // needed was kept for one commit as "belt-and-braces" and was simply the old bug wearing a new hat: focus
 // is usually in the chat composer, so a launcher that stands down there is a launcher that does not open
 // when you want it. `preventDefault` on the handler covers the only real risk the guard addressed.
@@ -200,15 +206,18 @@ export const Spotlight = () => {
   // anywhere — including inside a panel that has its own key handling.
   useEffect(() => {
     const onKey = (ev: KeyboardEvent) => {
-      // `altKey` and `code`, not `key`: alt-space produces a different `key` on several layouts (and
+      // `ctrlKey` and `code`, not `key`: a modifier+space produces a different `key` on several layouts (and
       // nothing at all on some), while the physical key is `Space` everywhere.
       //
+      // `!ev.shiftKey`, because ctrl+SHIFT+space is the theme browser. Without it one chord would open both,
+      // which is the bug that took a capture-phase listener to fix on the theme side.
+      //
       // No focus check. There was one, inherited from shift-space where it was mandatory, and keeping it
       // "as belt-and-braces" was wrong in the plainest way: focus is usually IN the chat composer, so the
       // guard meant the launcher did not open from the place it is most often wanted. `preventDefault`
       // below covers the only thing the guard was protecting against — a layout that would otherwise type
       // a character.
-      if (ev.altKey && ev.code === 'Space') {
+      if (ev.ctrlKey && !ev.shiftKey && !ev.altKey && ev.code === 'Space') {
         ev.preventDefault();
         // Take focus off whatever had it, explicitly, before the overlay mounts. The effect below focuses
         // this panel's own input, and on paper that is enough — but "on paper" is what produced arrow keys
diff --git a/src/apps/officer-web/state/shortcuts.ts b/src/apps/officer-web/state/shortcuts.ts
new file mode 100644
index 00000000..df522366
--- /dev/null
+++ b/src/apps/officer-web/state/shortcuts.ts
@@ -0,0 +1,127 @@
+/*
+  Every keyboard shortcut the shell owns, as data.
+
+  ── Why a registry ──
+
+  Ported in shape from the owner's `vimazing` (`vim-maze/src/gameInfo.ts`), where the controls are declared
+  once and the help screen renders them. The alternative is what this replaced: chords spelled out inside
+  three separate key handlers, and a help text nobody updates because it lives somewhere else.
+
+  Two things follow from having it. `Ctrl+?` can render an accurate list without anybody maintaining prose.
+  And when shortcuts become configurable — the next big piece — this is the table a binding UI edits, rather
+  than a grep across handlers.
+
+  ── What it is NOT, yet ──
+
+  Declarative but not authoritative: the handlers still contain their own conditions, so a chord changed here
+  does not move. Making this the single source is part of the configurable-shortcuts work, and doing it now
+  would mean a rewrite of three handlers for no visible gain. Where a chord appears in both places the file
+  that owns it is named in `implementedIn`, so the pair can be found in one search.
+*/
+
+export type Shortcut = {
+  /** As a person reads it — `Ctrl+Shift+Space`, not a KeyboardEvent spelling. */
+  keys: string;
+  description: string;
+  /** The file whose handler actually implements it, until this registry is authoritative. */
+  implementedIn: string;
+};
+
+export type ShortcutSection = {
+  title: string;
+  /** Shown under the title when the section needs a caveat that a per-row description cannot carry. */
+  note?: string;
+  shortcuts: Shortcut[];
+};
+
+export const SHORTCUT_SECTIONS: ShortcutSection[] = [
+  {
+    title: 'Navigation',
+    shortcuts: [
+      {
+        keys: 'Ctrl+Space',
+        description: 'Spotlight — go to any screen, plugin or setting by name',
+        implementedIn: 'Layout/Spotlight/Spotlight.tsx',
+      },
+      { keys: 'Ctrl+?', description: 'This list', implementedIn: 'Layout/ShortcutsModal.tsx' },
+    ],
+  },
+  {
+    title: 'Themes',
+    note: 'The browser applies as you move, so you watch the app change rather than reading names.',
+    shortcuts: [
+      {
+        keys: 'Ctrl+Shift+Space',
+        description: 'Open the theme browser',
+        implementedIn: 'theme/useThemeKeys.ts',
+      },
+      {
+        keys: 'Ctrl+Shift+← / →',
+        description: 'Previous / next theme, without opening anything',
+        implementedIn: 'theme/useThemeKeys.ts',
+      },
+      {
+        keys: 'Ctrl+Shift+F',
+        description: 'Star or unstar the current theme, from anywhere',
+        implementedIn: 'theme/useThemeKeys.ts',
+      },
+    ],
+  },
+  {
+    title: 'In the theme browser',
+    shortcuts: [
+      { keys: 'j / k  ↑ / ↓', description: 'Move through the list', implementedIn: 'theme/useThemeKeys.ts' },
+      {
+        keys: 'l  →',
+        description: 'Apply the focused theme and keep browsing',
+        implementedIn: 'theme/useThemeKeys.ts',
+      },
+      { keys: 'h  ←', description: 'Put back the theme you started on', implementedIn: 'theme/useThemeKeys.ts' },
+      { keys: 'f', description: 'Star or unstar the focused theme', implementedIn: 'theme/useThemeKeys.ts' },
+      { keys: 'Enter', description: 'Keep what you are looking at', implementedIn: 'theme/useThemeKeys.ts' },
+      { keys: 'Esc', description: 'Cancel and restore', implementedIn: 'theme/useThemeKeys.ts' },
+    ],
+  },
+  {
+    title: 'In Spotlight',
+    shortcuts: [
+      { keys: '↑ / ↓', description: 'Move through the results', implementedIn: 'Layout/Spotlight/Spotlight.tsx' },
+      { keys: 'Enter', description: 'Go there', implementedIn: 'Layout/Spotlight/Spotlight.tsx' },
+      { keys: 'Esc', description: 'Close', implementedIn: 'Layout/Spotlight/Spotlight.tsx' },
+    ],
+  },
+  {
+    title: 'Chat',
+    note: 'Recall only takes the arrow key from an EMPTY composer, and any other key ends a recall — so a draft is never overwritten.',
+    shortcuts: [
+      {
+        keys: '↑ / ↓',
+        description: 'Previous / next prompt you sent, shell-style',
+        implementedIn: 'Chat/EmbeddableChat/useEmbeddableChat.ts',
+      },
+      {
+        keys: 'Enter',
+        description: 'Send · on an empty composer with something queued, send that now',
+        implementedIn: 'Chat/EmbeddableChat/useEmbeddableChat.ts',
+      },
+      { keys: 'Shift+Enter', description: 'Newline', implementedIn: 'Chat/EmbeddableChat/useEmbeddableChat.ts' },
+      {
+        keys: 'Esc',
+        description: 'Stop the turn that is generating',
+        implementedIn: 'Chat/EmbeddableChat/useEmbeddableChat.ts',
+      },
+    ],
+  },
+];
+
+/**
+ * Is this the `Ctrl+?` chord?
+ *
+ * `?` is `Shift+/` on most layouts and its own key on some, so both spellings are accepted rather than
+ * guessing which keyboard is attached. `code === 'Slash'` is the physical key, which is stable where `key`
+ * is not.
+ */
+export function isShortcutsChord(ev: KeyboardEvent): boolean {
+  if (!ev.ctrlKey) return false;
+  return ev.key === '?' || (ev.shiftKey && ev.code === 'Slash');
+}
diff --git a/src/workspaces/theme/src/useThemeKeys.ts b/src/workspaces/theme/src/useThemeKeys.ts
index 9b930b05..eab58346 100644
--- a/src/workspaces/theme/src/useThemeKeys.ts
+++ b/src/workspaces/theme/src/useThemeKeys.ts
@@ -78,8 +78,8 @@ export function useThemeKeys(options: ThemeKeysOptions = {}) {
     const onKeyDown = (event: KeyboardEvent) => {
       const { themeId: current, focused: focus, open: isOpen } = state.current;
 
-      // Toggle the list. `ctrl+alt+space` still works — it is what this shipped with an hour ago and
-      // fingers are quicker to learn than to unlearn.
+      // Toggle the list. `ctrl+alt+space` is still accepted alongside `ctrl+shift+space` — it is what this
+      // shipped with first, and fingers are quicker to learn than to unlearn.
       if (event.ctrlKey && (event.shiftKey || event.altKey) && event.code === 'Space') {
         event.preventDefault();
         /*