Fix device/replay/session UX issues, add pagination, bump to 0.3.0

- Fix device rename input collapsing on mobile (fixed width vs w-full
  inside an auto-layout table column).
- Add cascade-delete confirmation for sessions with a saved recording.
- Fix header connection LED: derive state from scanning/device-count/
  recording instead of the Buttplug client's raw connected flag; drop
  the label text and hide the indicator entirely when idle.
- Add a per-device disconnect button (stop + remove from store, the
  closest equivalent Buttplug's protocol allows per device).
- Fix replay ending early: duration now comes from the recording's
  actual durationMs, not the last event's timestamp.
- Replay robustness: show which devices are being replayed to, reset
  actuators to zero on start/play/pause, fully disconnect devices and
  the whole client on stop/unmount, surface command failures via toast.
- Stop flagging the header LED red during replay - recording is only
  for live sessions.
- Add page-number pagination to recordings/sessions/devices lists.
- Wordmark SEXY -> Sexy; add proper per-page <title>s including
  dynamic titles for recording/session detail and replay pages.

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

app/api/play-sessions/[id]/route.ts

@@ -1,6 +1,7 @@
 import { NextResponse } from "next/server";
 import { z } from "zod";
 import { deletePlaySession, endPlaySession, getPlaySessionDetail } from "@/lib/db/queries/play-sessions";
+import { getRecordingsForSession } from "@/lib/db/queries/recordings";
 
 const patchSchema = z.object({ status: z.enum(["completed", "aborted"]) });
 
@@ -22,16 +23,18 @@ export async function PATCH(req: Request, { params }: { params: Promise<{ id: st
   return NextResponse.json({ playSession: updated });
 }
 
-export async function DELETE(_req: Request, { params }: { params: Promise<{ id: string }> }) {
+export async function DELETE(req: Request, { params }: { params: Promise<{ id: string }> }) {
   const { id } = await params;
+  const cascade = new URL(req.url).searchParams.get("cascade") === "true";
   try {
-    await deletePlaySession(Number(id));
+    await deletePlaySession(Number(id), { cascade });
     return NextResponse.json({ ok: true });
   } catch (err) {
     const message = err instanceof Error ? err.message : String(err);
     if (message.includes("FOREIGN KEY") || message.includes("SQLITE_CONSTRAINT")) {
+      const blockingRecordings = await getRecordingsForSession(Number(id));
       return NextResponse.json(
-        { error: "cannot delete a session that a saved recording still references" },
+        { error: "cannot delete a session that a saved recording still references", recordings: blockingRecordings },
         { status: 409 },
       );
     }