v0.4.1

TinyUSB upstream. Recipes that pulled the MIDI 2.0 driver from the
sauloverissimo/tinyusb fork now pull from hathach/tinyusb at the
merge commit of PR #3571. RX drain migrated from polling loop to the
tud_midi2_rx_cb / tuh_midi2_rx_cb callbacks across 18 device, host,
and bridge recipes. BUFSIZE aligned with upstream defaults (device
without override = EPSIZE, host 512/512).

Changed

• Examples: 15 recipes bumped TinyUSB pin to hathach/tinyusb upstream
  (PR #3571 merged 2026-05-19).
• Examples: 3 ESP32-P4 recipes (esp32-p4-devkit-host-midi2,
  esp32-p4-devkit-bridge-midi2, esp32-p4-devkit-bridge2-midi2)
  bumped to the experiment/midi-coexistence branch on top of upstream
  master (alt-walk bcdMSC defer + opt-in user responder, staged as
  follow-up PRs).
• Examples: RX drain moved from polling loops to driver callbacks
  (tud_midi2_rx_cb, tuh_midi2_rx_cb).
• Examples: CFG_TUD_MIDI2_*_BUFSIZE overrides removed where the
  upstream default (= EPSIZE) is sufficient; host recipes aligned with
  the upstream midi2_host example (512/512).
• README: Boards table reorganized; Status column renamed to Notes,
  per-row override badges removed. The Waveshare ESP32-P4-WIFI6-DEV-KIT
  is now listed as two rows: device-only (upstream, stable) and
  host / bridge (experimental branch).

Fixed

• Examples: removed stale reference to the deprecated usbd_control.c
  source in the components/tinyusb/CMakeLists.txt of
  esp32-p4-devkit-bridge-midi2 and esp32-p4-devkit-bridge2-midi2
  (the upstream merged usbd_control.c into usbd.c).
• Examples: added default for CFG_TUD_MIDI2_USER_RESPONDER in the
  experimental branch so the opt-in macro compiles cleanly under
  -Werror=undef and -Werror=unused-function.