v3.32.2: the Windows card-swap auto-equip loop

After a card swap (or the first insertion after startup) on Windows the
auto-equip looped forever: "card inserted, initializing" / "card gone
during initialization", with no "retry 2/3" lines.

An equip with the card still present produced no card (app.card None),
and that branch reported "card gone" and returned True - a no-op success
- so the three retries never ran and the watchdog re-armed every ~5 s.

- The card-gone no-op is now only for a real removal (card_present
  False); a card-present init that produced no card raises a failure.
- Any failed attempt marks the transport stale, so the next attempt
  rebuilds the PC/SC link (a Windows swap can leave the old link unable
  to connect; _ensure_transport releases the old link before building
  the new one, so the 2026-09-24 stale-handle bug cannot recur).
- The error pySim swallowed (cmd2) is printed as "AUTO-EQUIP: init
  output:" with its traceback - the failure is diagnosable from the log.
- Docs: the READMEs' troubleshooting bullet.
- Version strings + the PWA cache bumped together (simple-v460).

Tests: a card-present init without a card is a failure, a mid-init
removal stays a silent no-op, any failure marks the transport, the
stale-handle traceback reaches the log, and an end-to-end retry: a
failed init, the old link released, a fresh one built, the retry
succeeds.  1012 Python + 953 frontend green.

README.md

@@ -799,7 +799,7 @@ its MSVC build chain) is not pulled in.
 - **"Failed to establish context: Access denied"** — `pcscd` isn't running or the user lacks permission: `sudo systemctl enable --now pcscd && sudo usermod -a -G pcscd $USER`.
 - **"device file /dev/ttyUSB0 does not exist"** — no serial reader; connect a USB reader or pass `-d` explicitly. The server still starts without a reader.
 - **"Service not available" (0x8010001D) / reader gone after a `pcscd` restart** — the server recovers by itself: a watchdog revives pyscard's presence monitor and the next equip (automatic after re-insertion, or the **Equip** button) recreates the PC/SC transport (releasing the old link first). No server restart needed.
-- **"Card was removed" errors / auto-equip fails after a card swap** — a normal card swap reconnects on the existing transport (card-level PC/SC errors no longer force a transport rebuild), a failed auto-equip is retried up to 3 times, and the watchdog re-arms it every 5 s while a card is present. A removed card also clears the card state completely, so handlers answer "no card" instead of transmitting over the dead card.
+- **"Card was removed" errors / auto-equip fails after a card swap** — the auto-equip retries up to 3 times, and **every failed attempt rebuilds the PC/SC transport** before the next one: after a card swap on Windows the old link can stay unable to connect, which used to fail every retry and re-arm forever. The swallowed init error (with its traceback) is now printed as `AUTO-EQUIP: init output:`, and a card that is present but produced no card is a failure, not a silent "card gone". The watchdog re-arms with a doubling delay (5 s up to 60 s) while a card is present; a removed card clears the card state completely, so handlers answer "no card" instead of transmitting over the dead card.
 
 ### API reference