remove the dead multi-user surface

Officer is single-user: the server owner is the only account, created once by
/auth/bootstrap. Everything that existed to serve additional users was
unreachable, so it is gone rather than left looking like it does something.

Accounts: drop the invite / resend-invite / delete / list-users routes and the
Users settings screen, the inert /auth/signup handler, and the account
verification chain it fed (verify, resend-verification, VerifyScreen, the
UserInvite + VerifyAdmin + VerifyRegistration templates). /auth/verify-token
survives for password resets only, and now requires a reset-password token
rather than accepting any signed JWT.

Roles: drop the users.role column and the four-value USER_ROLES enum. The
permissions table granted every role identical methods, and every
role === 'Super Admin' check was permanently true. The JWT no longer carries a
role claim.

Sandbox: remove sidecar/sandbox.ts and its five call sites. bwrap was selected
only for non-Super-Admin users, so it never ran. It was also not a usable agent
jail as written — --share-net, the project root (with .env) bound read-only,
and runuser dropping to the server's own uid. Rebuilding it for agent
containment would be a different construction, and git history keeps this one.

getHomeDir keeps its DATA_PATH meaning; the new getOwnerHomeDir resolves the
owner's real login home, which is what terminals, chats and task runs use.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/servers/data-path.ts

@@ -25,10 +25,13 @@ export const AGENT_CONFIG_DIR = join(homedir(), '.pi', 'agent');
 
 export const SEED_PATH = resolve(import.meta.dir, '../../seed');
 
+// The managed home under DATA_PATH — what provisioning seeds and what the generated Claude config
+// points at. Distinct from the owner's real login home below.
 export const getHomeDir = (email: string) => join(DATA_PATH, email, 'home');
 
-export const getHomeDirForRole = (email: string, role: string | null): string =>
-  role === 'Super Admin' && process.env.HOME_DIR ? process.env.HOME_DIR : getHomeDir(email);
+// Where the owner's sessions actually run: their real login home when HOME_DIR is set, so platform
+// terminals/chats/tasks share config and credentials with the shell they use outside Officer.
+export const getOwnerHomeDir = (email: string): string => process.env.HOME_DIR ?? getHomeDir(email);
 
 export const getUserPiConfigDir = (email: string) => join(DATA_PATH, email, 'home', '.pi', 'agent');