feat(documents): surface filesystem work-products in Document Center

The Document Center only read the `documents` table, which is prose
content POSTed via /api/documents. Everything the agents wrote via
`bash` / `write` / `edit` — the bulk of their output on a real
project — landed in `work_products` and never appeared on the page.
Operators saw "0 items" after a full night's run.

Lift work_products into the same UI:

  - `listWorkProductsForCompany` returns a newest-first slice with a
    500-row cap so the snapshot stays bounded.
  - `ProfileSnapshot.workProducts` flows through `useCompanyData` as
    `companyWorkProducts`, filtered to the current company.
  - `DocumentCenter` renders two labelled sections in order — prose
    documents (editable) on top, files & deliverables below. Each
    work-product row opens the underlying URL or filesystem path
    when clickable, so the agent's bash-generated markdown, PRs,
    and artifacts are one click away.

`WorkProductRecord` lifts into `@shared/types/records-extended` so
the renderer, snapshot, and database shells all reference the same
shape. The store-test fixture learns about the new field.

src/renderer/hooks/useCompanyController.ts

@@ -172,6 +172,7 @@ export function useCompanyController() {
     filteredActivity: companyData.filteredActivity,
     companySecrets: companyData.companySecrets,
     companyDocuments: companyData.companyDocuments,
+    companyWorkProducts: companyData.companyWorkProducts,
     companyKnowledge: companyData.companyKnowledge,
     companyMeetings: companyData.companyMeetings,
     companySprints: companyData.companySprints,

src/renderer/hooks/useCompanyData.ts

@@ -37,6 +37,7 @@ export function useCompanyData(
   const filteredActivity = useMemo(() => filterByCompany(snapshot?.activity, currentCompany), [snapshot, currentCompany]);
   const companySecrets = useMemo(() => filterByCompany(snapshot?.secrets, currentCompany), [snapshot, currentCompany]);
   const companyDocuments = useMemo(() => filterByCompany(snapshot?.documents, currentCompany), [snapshot, currentCompany]);
+  const companyWorkProducts = useMemo(() => filterByCompany(snapshot?.workProducts, currentCompany), [snapshot, currentCompany]);
   const companyKnowledge = useMemo(() => filterByCompany(snapshot?.knowledgeBase, currentCompany), [snapshot, currentCompany]);
   const companyMeetings = useMemo(() => filterByCompany(snapshot?.meetings, currentCompany), [snapshot, currentCompany]);
   const companySprints = useMemo(() => filterByCompany(snapshot?.sprints, currentCompany), [snapshot, currentCompany]);
@@ -109,6 +110,7 @@ export function useCompanyData(
     filteredActivity,
     companySecrets,
     companyDocuments,
+    companyWorkProducts,
     companyKnowledge,
     companyMeetings,
     companySprints,
@@ -134,6 +136,7 @@ export function useCompanyData(
     filteredActivity,
     companySecrets,
     companyDocuments,
+    companyWorkProducts,
     companyKnowledge,
     companyMeetings,
     companySprints,