chore: v2.8.15 — Oh My Pi login sharing, omp --allow-home, Markdown Preview default, first-login password

- omp-share.js: an admin's switch (S3) runs omp's own auth broker + gateway as
  the host on loopback; a member's omp pane reaches it as a scoped client keyed
  by its pane token (clients file = live omp panes only), runs on
  --model agenthub/<model>, never holds a credential.
- omp catalog: --allow-home, so a workspace at the account's home keeps its
  sessions there (they were recorded under a temp dir and dropped).
- Settings → Appearance → Open Markdown as: Preview (default) or Raw, for
  Files/Changes, the config viewer and a chat's file panel.
- First-login password change and password rules, avatar URLs, Artifacts
  "Mine" includes installed shared skills/plugins, a member's own hook pages.

client/src/components/lanes/LaneChangesPanel.tsx

@@ -106,6 +106,7 @@ import {
 import { api, gitTarget } from "../../lib/api";
 import { usePermissions } from "../AuthGate";
 import { pasteToLane } from "../../lib/panePaste";
+import { readMarkdownPreview } from "../../lib/markdownView";
 import { confirmDialog, confirmDiscard as askDiscard } from "../../lib/confirm";
 import { copyText } from "../../lib/clipboard";
 import { isSubmitEnter } from "../../lib/keys";
@@ -873,9 +874,10 @@ export function LaneChangesPanel({
   const [layout, setLayout] = useState<DiffLayout>(wide ? "split" : "unified");
   useEffect(() => setLayout(wide ? "split" : "unified"), [wide]);
   const [whole, setWhole] = useState(false);
-  // A whole markdown file shown rendered instead of as source; per file.
-  const [mdPreview, setMdPreview] = useState(false);
-  useEffect(() => setMdPreview(false), [openFile]);
+  // A whole markdown file shown rendered instead of as source; per file, each
+  // one opening as Settings → Appearance says (`lib/markdownView.ts`).
+  const [mdPreview, setMdPreview] = useState(readMarkdownPreview);
+  useEffect(() => setMdPreview(readMarkdownPreview()), [openFile]);
   const [data, setData] = useState<LaneChanges | null>(null);
   // A folder that is not a repo (an empty new workspace, a parent of clones)
   // has no changes, review or history — only its files, which Files reads
@@ -2014,6 +2016,8 @@ export function LaneChangesPanel({
     });
 
   const dirty = draft !== null && draft !== text?.lines.join("\n");
+  // Rendered only where the toggle is offered: a whole markdown file.
+  const mdShown = mdPreview && whole && isMarkdown(openFile);
   dirtyRef.current = dirty;
   useUnsavedGuard(dirty);
   const dirtyChangeRef = useRef(onDirtyChange);
@@ -3027,7 +3031,7 @@ export function LaneChangesPanel({
                       range === "commit" && sha ? sha : "work"
                     )}
                   />
-                ) : !mdPreview &&
+                ) : !mdShown &&
                   (whole || editable) &&
                   (draft !== null || (editable && text === null)) ? (
                   // The editor, once both texts are in: not the diff first.
@@ -3083,7 +3087,7 @@ export function LaneChangesPanel({
                     </Suspense>
                   )
                 ) : whole ? (
-                  text && mdPreview ? (
+                  text && mdShown ? (
                     <div className="min-h-0 flex-1 overflow-auto rounded border border-border-light bg-surface-0 p-4">
                       <MarkdownPreview text={text.lines.join("\n")} />
                     </div>

client/src/components/lanes/__tests__/LaneChangesPanel.test.tsx

@@ -514,7 +514,7 @@ describe("LaneChangesPanel", () => {
     expect(screen.getByText("Unversioned Files")).toBeInTheDocument();
   });
 
-  it("reads a whole markdown file rendered after Preview, and back as source after Raw", async () => {
+  it("opens a whole markdown file rendered, as source after Raw, and rendered again after Preview", async () => {
     vi.mocked(api.lanes.gitTree).mockResolvedValue({
       available: true,
       path: "",
@@ -534,12 +534,13 @@ describe("LaneChangesPanel", () => {
     render(<LaneChangesPanel laneId={7} full />);
     const sidebar = await screen.findByTestId("lane-changes-sidebar");
     await user.click(await within(sidebar).findByText("README.md"));
-    await screen.findByTestId("lane-file-editor");
-    await user.click(screen.getByTestId("lane-file-preview"));
-    expect(screen.getByRole("heading", { name: "Hello" })).toBeInTheDocument();
+    expect(await screen.findByRole("heading", { name: "Hello" })).toBeInTheDocument();
     expect(screen.queryByTestId("lane-file-editor")).toBeNull();
     await user.click(screen.getByTestId("lane-file-preview"));
     expect(await screen.findByTestId("lane-file-editor")).toHaveValue("# Hello\n\n- one");
+    await user.click(screen.getByTestId("lane-file-preview"));
+    expect(screen.getByRole("heading", { name: "Hello" })).toBeInTheDocument();
+    expect(screen.queryByTestId("lane-file-editor")).toBeNull();
   });
 
   it("shows an image file as the picture, with no edit control", async () => {