fix: v2.7.4 — a developer's System page carries no host or other-user path

- GET /api/settings/info for a developer: no DB path, no hooks file path,
  and no transcript-cache keys — those were EVERY user's transcript paths
  (their folders and session ids). GET /api/updates/status: no repo_root.
  Test: server-mode-leaks.
- Also in this release (earlier commits): a member's missing workspace
  folder is made as them at start; --allow-dangerously-skip-permissions only
  for an account that accepted the bypass warning or a bypass run.
Full suites: server 2889/2889, client 1250/1250, tsc -b.

server/__tests__/server-mode-leaks.test.js

@@ -148,3 +148,23 @@ describe("server mode: a member's skills/commands come from their own workspaces
     assert.ok(names(r).includes("max-skill"));
   });
 });
+
+describe("the System page's facts for a developer", () => {
+  // Every string that looks like an absolute path, anywhere in a body.
+  const paths = (o, out = []) => {
+    if (typeof o === "string" && o.startsWith("/")) out.push(o);
+    else if (o && typeof o === "object") for (const v of Object.values(o)) paths(v, out);
+    return out;
+  };
+
+  it("carries no host or other-user path (DB, hooks file, transcript cache keys)", async () => {
+    const mia = await login("mia", "member-pass-1");
+    const info = await call("/api/settings/info", mia);
+    assert.equal(info.status, 200);
+    assert.deepEqual(paths(info.body), []);
+    assert.equal(typeof info.body.db.size, "number", "the numbers stay");
+    const boss = await login("boss", "admin-pass-1");
+    const full = await call("/api/settings/info", boss);
+    assert.ok(full.body.db.path, "an admin still sees the host's paths");
+  });
+});