Event names are local now, in the manifests and in the code

Every module named its events the way the old bus spelled a routing key —
`module.<module>.<verb>`. Design 29 says a module names an event locally and the
mesh works out where it lands, so all 37 were stale against a rule already
decided. On the new bus that derives into a namespace belonging to a module
called "module", so no cross-module subscription in the mesh matched anything:
nothing failed, nothing reacted (novox/hq 04-ISSUES/127).

36 manifests converted, and 43 files of module code with them. The code mattered
as much as the manifests: the runtime builds the subject from what `emit()` is
handed, so a converted manifest with unconverted code would have had the
permission and the subject disagree.

Three things the new check found on the way:

- `photos` emitted an event its manifest never declared, which the new bus refuses
  outright. Declared.
- `showcase` waited for an event nothing emits, so its demo could never be
  triggered — only `showcase` may publish under its own name. It emits both halves
  now.
- `distribution` declared an event named after a different module. It emits
  `image.pushed` under its own name. An event about a *role* belongs on the seat,
  where the name outlives whoever holds it, but the sdk has no way to publish on a
  seat yet, so that stays recorded rather than declared.

The audit logger's "everything" pattern is `**` rather than the old bus's `#`.

modules/nextcloud/index.ts

@@ -26,7 +26,7 @@ async function pollUsers(client: NextcloudClient): Promise<void> {
   const users = client.listUsers();
   for (const u of users) {
     if (knownUsers.has(u.uid)) continue;
-    if (usersPrimed) await emit("module.nextcloud.user.created", { uid: u.uid, displayName: u.displayName });
+    if (usersPrimed) await emit("user.created", { uid: u.uid, displayName: u.displayName });
     knownUsers.add(u.uid);
   }
   usersPrimed = true;
@@ -38,7 +38,7 @@ async function pollShares(client: NextcloudClient): Promise<void> {
   const shares = await client.listShares();
   for (const s of shares) {
     if (knownShares.has(s.id)) continue;
-    if (sharesPrimed) await emit("module.nextcloud.share.created", { id: s.id, path: s.path, shareType: s.shareType, shareWith: s.shareWith, owner: s.owner });
+    if (sharesPrimed) await emit("share.created", { id: s.id, path: s.path, shareType: s.shareType, shareWith: s.shareWith, owner: s.owner });
     knownShares.add(s.id);
   }
   sharesPrimed = true;