Show the running version on Settings > General

The General page ends with a Version block naming the release this
server runs, so an update can be confirmed from the app.

The version is COBBLE_VERSION, the release tag the image was built with
(Dockerfile ARG, passed by the release workflow, which falls back to
package.json's version on a workflow-dispatch build), else package.json's
version, which a development server reports too, with (development)
after it. runningVersion (src/utils/running-version.ts) drops an
unusable version string rather than showing it.

Also includes the working tree's pending signup guard in
src/pages/__root.server.ts: a user who still holds a session while the
install has no users is sent to /auth/logout (and may load it).

src/pages/admin/settings/(functions)/grab-settings-server-props.ts

@@ -7,6 +7,7 @@ import type { PagePropsType } from "@/src/types";
 import type { BunextPageServerFn } from "@moduletrace/bunext/types";
 import grabStorageQuotaOverview from "@/src/functions/backend/db/app-settings/grab-storage-quota-overview";
 import { grabSystemPromptAppendOverview } from "@/src/functions/backend/db/app-settings/grab-system-prompt-append";
+import runningVersion from "@/src/utils/running-version";
 
 type Params = Parameters<BunextPageServerFn<PagePropsType>>[0];
 
@@ -44,6 +45,7 @@ export default async function grabSettingsServerProps({ req }: Params) {
             has_password,
             storage_quota: await grabStorageQuotaOverview().catch(() => null),
             system_prompt_append: await grabSystemPromptAppendOverview().catch(() => null),
+            running_version: runningVersion({ env: process.env }),
         },
     };
 }