refactor: migrate MICRO_PIP to fine-grained feature flags

Replace monolithic MICRO_PIP/PIP_MICRO with granular flags:

Feature flags (CMake options + platform auto-detection):
- PIP_NO_FILESYSTEM, PIP_NO_THREADS, PIP_NO_SOCKET
- PIP_NO_PROCESS, PIP_NO_DYNLIB, PIP_NO_FFT, PIP_NO_SERIAL

Embedded optimization flag:
- PIP_EMBEDDED (auto-set for Pico SDK and FreeRTOS)
  Controls buffer sizes, time stubs, terminal fallback, init stubs

Platform blocks in CMakeLists.txt:
- Pico SDK: auto-disables FS, PROCESS, DYNLIB, FFT, SERIAL;
  conditionally disables THREADS (no FreeRTOS) and SOCKET (no LWIP)
- FreeRTOS: auto-disables FS, PROCESS, DYNLIB, FFT, SERIAL;
  conditionally disables SOCKET (no LWIP)
- Android: auto-disables PROCESS, DYNLIB, FFT

Updated 96 files across libs/, utils/, tests/, and CMakeLists.txt.
Builds verified for Linux (547 tests pass) and Pico SDK (100%).
Removed all MICRO_PIP and PIP_MICRO references (0 remaining).

libs/main/application/pitranslator.cpp

@@ -1,6 +1,6 @@
 /*
     PIP - Platform Independent Primitives
-	Translation support
+    Translation support
     Ivan Pelipenko peri4ko@yandex.ru
 
     This program is free software: you can redistribute it and/or modify
@@ -25,6 +25,7 @@
 #include "pitranslator_p.h"
 #include "pivaluetree_conversions.h"
 
+#ifndef PIP_NO_FILESYSTEM
 
 //! \class PITranslator pitranslator.h
 //! \details
@@ -64,9 +65,9 @@ void PITranslator::loadLang(const PIString & short_lang, PIString dir) {
 	auto vt   = PIValueTreeConversions::fromText(getBuiltinConfig());
 	auto lang = vt.child(short_lang.toLowerCase().trim());
 	for (const auto & cn: lang.children()) {
-		auto c = s->PRIVATEWB->content.createContext(cn.name());
-		for (const auto & s: cn.children())
-			c->add(s.name(), s.value().toString());
+	    auto c = s->PRIVATEWB->content.createContext(cn.name());
+	    for (const auto & s: cn.children())
+	        c->add(s.name(), s.value().toString());
 	}*/
 }
 
@@ -114,3 +115,5 @@ PITranslator * PITranslator::instance() {
 	static PITranslator ret;
 	return &ret;
 }
+
+#endif // PIP_NO_FILESYSTEM