fix: event-loop freezes, plugin-install boot crash, tmux attach/scrollbar, Codex transcripts

- GET /api/workflows: one LEAD() window pass in a read worker (read-pool.js,
  workflow-stats.js); idx_events_session restored, idx_events_tool added
- compat-sqlite gains function/pluck/readonly so a plugin install without a
  better-sqlite3 build boots again; antigravity-usage uses db.js's Database
- install-hooks adds no checkout hooks while the agenthub plugin is enabled
  (events were doubled)
- terminal attach runs the live tmux server's own binary; the pane scrollbar
  gets a visible 2-column style, and claude panes start with
  CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN=1 so tmux keeps history to scroll
- Codex sessions' conversation in GET /api/sessions/:id/transcript
- Codex/Antigravity sessions claimed by their workspace without hooks
- UI-audit follow-ups, docs and OpenAPI

client/src/components/lanes/LaneDiffView.tsx

@@ -751,7 +751,9 @@ export function LaneDiffView({
   const [anchor, setAnchor] = useState<{ top: number; left: number } | null>(null);
   const place = useCallback(() => {
     const r = anchorEl.current?.isConnected ? anchorEl.current.getBoundingClientRect() : null;
-    if (r) setAnchor({ top: r.bottom + 2, left: r.left });
+    // A long diff unmounts rows scrolled out of its window, the clicked number
+    // with them: the box docks under the diff rather than float over other lines.
+    setAnchor(r ? { top: r.bottom + 2, left: r.left } : null);
   }, []);
   useEffect(() => {
     if (commentAt == null) return;
@@ -764,7 +766,6 @@ export function LaneDiffView({
         ? {
             open: (line: number, el?: HTMLElement) => {
               anchorEl.current = el ?? null;
-              setAnchor(null);
               place();
               setCommentAt(line);
               setUndelivered(false);

client/src/components/lanes/WorkspaceSessionList.tsx

@@ -17,7 +17,8 @@
  * any other session opens in its workspace too (`?lane=<id>&session=<id>`,
  * `SessionReplay`): its conversation with a prompt box, resumed only when a
  * message is SENT, because a resume re-reads the whole transcript into context.
- * The list shows `SESSION_LIMIT` rows and a **Show N more** under them. A
+ * The list shows `SESSION_LIMIT` rows and a **See all (N more)** under them that
+ * loads every one. A
  * live tab whose session was archived is not brought back as a New session,
  * and archiving a live one asks first. F2 renames the focused row too; each
  * dot carries its meaning as screen-reader text.
@@ -39,7 +40,7 @@ import { useAiTools } from "../../hooks/useAiTools";
 import { useContextMenu } from "../ContextMenu";
 import { SessionMenu } from "./SessionMenu";
 
-export const SESSION_LIMIT = 20;
+export const SESSION_LIMIT = 6;
 
 /**
  * The live pane holding a session: the run the hooks bound it to
@@ -244,7 +245,7 @@ export function WorkspaceSessionList({
   const [busy, setBusy] = useState(false);
   const ctx = useContextMenu<RunHandle>();
   const sessionCtx = useContextMenu<Session>();
-  // Rows shown; Show more adds a page.
+  // Rows shown; See all raises it to the whole list.
   const [limit, setLimit] = useState(SESSION_LIMIT);
 
   // This workspace's live AI tabs. A tab started bare (no prompt) has its
@@ -525,10 +526,10 @@ export function WorkspaceSessionList({
         <button
           type="button"
           data-testid={`workspace-sessions-more-${lane.id}`}
-          onClick={() => setLimit((n) => n + SESSION_LIMIT)}
+          onClick={() => own && setLimit(own.total)}
           className="w-full py-1 pl-8 pr-2 text-left text-[11px] text-fg-muted hover:text-fg-primary"
         >
-          {t("tree.showMore", { count: Math.min(more, SESSION_LIMIT) })}
+          {t("tree.seeAll", { count: more })}
         </button>
       )}
       {failure}

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

@@ -528,6 +528,17 @@ describe("LaneDiffView — line comments", () => {
     expect(screen.queryByTestId("diff-comment-box")).toBeNull();
   });
 
+  it("docks the box under the diff once its line scrolls out of a windowed diff", () => {
+    render(<LaneDiffView file={FILE} layout="unified" onComment={() => true} />);
+    const btn = screen.getByTestId("diff-comment-line-1");
+    fireEvent.click(btn);
+    expect(screen.getByTestId("diff-comment-box").style.position).toBe("fixed");
+    // What windowing does to a row scrolled out of range.
+    btn.remove();
+    fireEvent.scroll(screen.getByTestId("lane-diff-view"));
+    expect(screen.getByTestId("diff-comment-box").style.position).toBe("");
+  });
+
   it("offers no comment button without onComment", () => {
     render(<LaneDiffView file={FILE} layout="unified" />);
     expect(screen.queryByTestId("diff-comment-line-1")).toBeNull();