refactor(track-core): remove app-facing track adapters

Keep track-core focused on portable track state, scheme runtime, PID runtime, memory strip, and render planning.

Remove the ESP-IDF/nanopb Track adapter headers and sources from the submodule so app/protobuf ownership can live in a separate firmware component.

The standalone CMake and Python binding surface remains unchanged, including the emulator-facing APIs.

include/app_track_decoder.hpp

@@ -1,66 +0,0 @@
-#pragma once
-
-#include <variant>
-#include <vector>
-
-#include "app_track_model.hpp"
-#include "track_core/scheme_decoder.hpp"
-
-namespace app::track {
-
-struct TrackSchemeDecoder {
-	using proto_type                            = track_app_TrackScheme;
-	static inline const pb_msgdesc_t *pb_fields = &track_app_TrackScheme_msg;
-
-	TrackSchemeDecoder() = default;
-
-	[[nodiscard]]
-	static TrackSchemeDecoder from_proto(const proto_type &proto);
-
-	[[nodiscard]]
-	proto_type to_proto() const;
-
-	[[nodiscard]]
-	expected<track_core::DecodedScheme, error_t> decode_core() const;
-
-	uint8_t id = 0;
-	std::vector<uint8_t> binary;
-	Color color;
-};
-
-struct TrackSchemeMgr {
-	using proto_type                            = track_app_TrackSchemeMgr;
-	static inline const pb_msgdesc_t *pb_fields = &track_app_TrackSchemeMgr_msg;
-
-	struct Add {
-		using proto_type                            = track_app_TrackSchemeMgrAdd;
-		static inline const pb_msgdesc_t *pb_fields = &track_app_TrackSchemeMgrAdd_msg;
-
-		TrackSchemeDecoder scheme_decoder;
-		error_t err{ESP_OK};
-
-		static Add from_proto(const proto_type &proto);
-		[[nodiscard]]
-		proto_type to_proto() const;
-	};
-
-	struct Clear {};
-
-	using Unknown = std::monostate;
-
-	enum class MessageType : uint8_t {
-		NONE  = 0,
-		ADD   = 1,
-		CLEAR = 2
-	};
-
-	explicit TrackSchemeMgr() = default;
-
-	static TrackSchemeMgr from_proto(const proto_type &proto);
-	[[nodiscard]]
-	proto_type to_proto() const;
-
-	std::variant<Unknown, Add, Clear> choice{Unknown{}};
-};
-
-} // namespace app::track

include/app_track_drawer.hpp

@@ -1,40 +0,0 @@
-#ifndef D2AF35D4_5EEF_406F_A3F6_F7E6F2AA24C4
-#define D2AF35D4_5EEF_406F_A3F6_F7E6F2AA24C4
-#include "app_strip_if.hpp"
-#include "app_track_model.hpp"
-#include "track_core/render.hpp"
-#include <array>
-#include <cstdint>
-
-namespace app::track {
-
-struct TrackRenderSpan {
-	uint16_t start_led{};
-	uint16_t led_count{};
-	Color color;
-};
-
-struct TrackRenderPlan {
-	static constexpr size_t MAX_SPANS = 4;
-
-	void add_fill(uint16_t start_led, uint16_t led_count, Color color);
-
-	[[nodiscard]]
-	bool empty() const {
-		return span_count == 0;
-	}
-
-	std::array<TrackRenderSpan, MAX_SPANS> spans{};
-	size_t span_count{};
-};
-
-[[nodiscard]]
-TrackRenderPlan make_track_render_plan(const TrackConfig &config, const TrackInfo &info, const report &rep);
-
-void apply_render_plan(app::strip::StripView strip, const TrackRenderPlan &plan);
-
-[[nodiscard]]
-track_core::TrackRenderSink make_track_render_sink(app::strip::StripView &strip);
-}
-
-#endif /* D2AF35D4_5EEF_406F_A3F6_F7E6F2AA24C4 */