unify agent items into a flat file-based store, drop the marketplace

Replace the marketplace service dependency and the native/global/user
scope tiers with a single external directory ($OFFICER_ITEMS_DIR) holding
skills, tools, tasks, processes and extensions as plain files.

- tasks move from Postgres to TASK.md files (new file-backed task layer);
  task editing now works, which the DB path never supported
- skills/tools/processes collapse into one shared file router (single dir)
- remove the marketplace client (sync-marketplace/sync-version) and the
  boot-time sync; pi-bridge/pi-manager/sandbox point at the flat store
- drop the dead tasks + vestigial skills/tools/processes/extensions +
  item_chats tables (migration 0004)
- one-time migration script exports DB tasks and consolidates disk items

Migration verified: all 6 tasks round-trip through the runtime parser
identically to their DB rows (pipeline steps, triggers, script impls and
agentic bodies all intact).

NOTE: not yet functionally tested end-to-end — every item (each task mode,
tool, skill, extension) still needs to be run/exercised in the app before
this is trusted. To be done manually.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/apps/officer-web/Screens/Dashboard/CapabilityPage.tsx

@@ -8,14 +8,12 @@ import { ArrowLeft, Pencil, Plus, Check, X, Trash2, Search, ChevronRight } from
 import { Button } from '@/components/ui/button';
 import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription } from '@/components/ui/dialog';
 import { useClient } from 'hooks/useClient';
-import { useAuth } from 'hooks/useAuth';
 import { Card } from '@/components/Card';
 import { usePiChat, EmbeddableChat } from 'officerdev';
 type CapabilitySummary = {
   dirName: string;
   name: string;
   description: string;
-  scope: 'native' | 'global' | 'user';
 };
 
 export type CapabilityDetail = CapabilitySummary & {
@@ -276,9 +274,9 @@ export const CapabilityChat = ({
 }: CapabilityChatProps) => {
   const seedFile = `${kind.toUpperCase()}.md`;
   const genericPrefix = `<frontmatter>\ninput file: ${filePath}\n${seedFile}: ${filePath}\ndir: ${resourceDir}\n\nBe aware of any extra files alongside the same dir as the ${kind} file we're handling, for possible extra context. You can also, if pertinent, create scripts or other files that will help you in the future.\n</frontmatter>`;
-  const promptFrontmatter = isNew ? buildCreationPrefix(kind, filePath, resourceDir) ?? genericPrefix : genericPrefix;
+  const promptFrontmatter = isNew ? (buildCreationPrefix(kind, filePath, resourceDir) ?? genericPrefix) : genericPrefix;
   const defaultInput = isNew
-    ? description ?? `Help me create the content for this new ${kind} file`
+    ? (description ?? `Help me create the content for this new ${kind} file`)
     : `Help me understand and improve this ${kind} file`;
 
   const pi = usePiChat(undefined, undefined, { replaceUrl: false });
@@ -294,14 +292,7 @@ export const CapabilityChat = ({
     wasGenerating.current = pi.isGenerating;
   }, [pi.isGenerating]);
 
-  return (
-    <EmbeddableChat
-      chat={pi}
-      defaultInput={defaultInput}
-      promptPrefix={promptFrontmatter}
-      className="h-full"
-    />
-  );
+  return <EmbeddableChat chat={pi} defaultInput={defaultInput} promptPrefix={promptFrontmatter} className="h-full" />;
 };
 
 export const FrontmatterBlock = ({ yaml }: { yaml: string }) => {
@@ -323,7 +314,17 @@ export const FrontmatterBlock = ({ yaml }: { yaml: string }) => {
   );
 };
 
-export const CapabilityList = ({ kind, endpoint, queryKey, selected, onSelect, onCreate, search: externalSearch, showCreate, onShowCreateChange }: CapabilityListProps) => {
+export const CapabilityList = ({
+  kind,
+  endpoint,
+  queryKey,
+  selected,
+  onSelect,
+  onCreate,
+  search: externalSearch,
+  showCreate,
+  onShowCreateChange,
+}: CapabilityListProps) => {
   const client = useClient();
   const qc = useQueryClient();
   const [internalCreating, setInternalCreating] = useState(false);
@@ -437,13 +438,6 @@ export const CapabilityList = ({ kind, endpoint, queryKey, selected, onSelect, o
           >
             <div className="flex items-center gap-2">
               <span className="text-sm font-medium text-duck-dark truncate">{item.name}</span>
-              <span
-                className={`shrink-0 text-[10px] px-1.5 py-0.5 rounded-full font-medium ${
-                  item.scope === 'user' ? 'bg-duck-teal/20 text-duck-teal' : 'bg-duck-dark/10 text-duck-dark/60'
-                }`}
-              >
-                {item.scope}
-              </span>
             </div>
             {item.description && <p className="text-xs text-duck-dark/50 mt-1 line-clamp-2">{item.description}</p>}
           </button>
@@ -462,7 +456,6 @@ export const CapabilityList = ({ kind, endpoint, queryKey, selected, onSelect, o
 export const CapabilityPage = ({ kind, endpoint, queryKey }: CapabilityPageProps) => {
   const client = useClient();
   const qc = useQueryClient();
-  const { user } = useAuth();
   const [selected, setSelected] = useState<string | null>(null);
   const [editing, setEditing] = useState(false);
   const [isNew, setIsNew] = useState(false);
@@ -544,7 +537,7 @@ export const CapabilityPage = ({ kind, endpoint, queryKey }: CapabilityPageProps
               <span className="text-sm font-medium text-duck-dark/70 flex-1">
                 {detail?.name ?? `Select a ${kind.toLowerCase()}`}
               </span>
-              {detail && (detail.scope === 'user' || user?.role === 'Super Admin') && (
+              {detail && (
                 <>
                   <button
                     onClick={() => setEditing((e) => !e)}