- CMake: disable thread/socket-dependent modules (http_client, mqtt_client,
client_server) and fftw when the required feature flags are off;
client_server/cloud no longer tied to the crypt option
- host utils gated on filesystem and the modules they need
- Pico keeps the minimal set; generic FreeRTOS (ESP32) keeps filesystem,
sockets and serial as in master, module set limited to crypt/compress/io_utils
- PICAN, PIBroadcast, PIPackedTCP vanish without socket+threads
- PISerial: restore PISERIAL_NO_PINS (auto-enabled on PIP_EMBEDDED)
- PIFile: FREERTOS uses fopen/stat (no fopen64 in ESP-IDF newlib)
- drop invalid PICout buffer guards, guard PIObject::deleteLater,
remove (void)destroying hack, fake PIHIDevice non-Linux stub and the
redundant PICO_SDK guard in code_model_generator
- guard console subsystem (PIScreen/PIScreenTile/tiles/PITerminal/
PIKbdListener) by PIP_HAS_THREADS plus a TTY or Windows console
(new PIP_HAS_TTY platform macro) - termios is not available on
bare-metal newlib
- guard cloud subsystem (PICloudBase/Client/Server/TCP) by
PIP_HAS_SOCKET and PIP_HAS_THREADS
- add PIP_BUILD_CONSOLE/PIP_BUILD_CLOUD to the auto-disable flag
dependencies in CMake
- PIP_CAN (SocketCAN) is Linux-only, exclude other platforms
- on Pico keep sockets/MQTT off by default: pico-sdk lwip provides
only a partial POSIX socket layer (no netinet/in.h, poll.h)
- PITranslator: inline no-op definitions when PIP_HAS_FILESYSTEM is
off so the _tr literal links
- PIIODevice: guard read_func/write_func EVENT_HANDLERs (no-threads)
- piwaitevent_p.cpp: drop unused sys/ioctl.h include (missing on
arm-none-eabi, broke Pico builds)