chore(python): reorder dependency-heavy code

diff --git a/python/src/trezorlib/_internal/emu_ble.py b/python/src/trezorlib/_internal/emu_ble.py
index ef8b1bb9..17e24cdd 100644
--- a/python/src/trezorlib/_internal/emu_ble.py
+++ b/python/src/trezorlib/_internal/emu_ble.py
@@ -25,8 +25,8 @@ from typing import TYPE_CHECKING, Iterable, Tuple
 import construct as c
 from construct_classes import Struct
 
+from ..construct_helpers import EnumAdapter
 from ..log import DUMP_PACKETS
-from ..tools import EnumAdapter
 from ..transport import Timeout, Transport, TransportException
 from ..transport.udp import UdpTransport
 
diff --git a/python/src/trezorlib/_internal/translations.py b/python/src/trezorlib/_internal/translations.py
index c897f4cd..d8f58f0c 100644
--- a/python/src/trezorlib/_internal/translations.py
+++ b/python/src/trezorlib/_internal/translations.py
@@ -27,10 +27,10 @@ import construct as c
 from construct_classes import Struct, subcon
 from typing_extensions import Self, TypedDict
 
+from ..construct_helpers import EnumAdapter, TupleAdapter
 from ..debuglink import LayoutType
 from ..firmware.models import Model
 from ..models import TrezorModel
-from ..tools import EnumAdapter, TupleAdapter
 
 # All sections need to be aligned to 2 bytes for the offset tables using u16 to work properly
 ALIGNMENT = 2
diff --git a/python/src/trezorlib/cli/__init__.py b/python/src/trezorlib/cli/__init__.py
index 21bf34f1..ba62cc75 100644
--- a/python/src/trezorlib/cli/__init__.py
+++ b/python/src/trezorlib/cli/__init__.py
@@ -33,11 +33,11 @@ from pathlib import Path
 import click
 from typing_extensions import Self
 
-from .. import exceptions, messages, protocol_v1, transport, ui
+from .. import exceptions, messages, protocol_v1, transport
 from ..client import AppManifest, PassphraseSetting, Session, TrezorClient, get_client
 from ..thp import client as thp_client
 from ..transport import Transport
-from . import credentials
+from . import credentials, ui
 
 LOG = logging.getLogger(__name__)
 
diff --git a/python/src/trezorlib/cli/device.py b/python/src/trezorlib/cli/device.py
index 5deebb76..2a1b1ff5 100644
--- a/python/src/trezorlib/cli/device.py
+++ b/python/src/trezorlib/cli/device.py
@@ -24,9 +24,9 @@ import typing as t
 import click
 import requests
 
-from .. import authentication, debuglink, device, exceptions, messages, ui
+from .. import authentication, debuglink, device, exceptions, messages
 from ..tools import format_path
-from . import ChoiceType, with_session
+from . import ChoiceType, ui, with_session
 
 if t.TYPE_CHECKING:
     from ..client import Session
diff --git a/python/src/trezorlib/cli/ui.py b/python/src/trezorlib/cli/ui.py
new file mode 100644
index 00000000..b45d5663
--- /dev/null
+++ b/python/src/trezorlib/cli/ui.py
@@ -0,0 +1,224 @@
+# This file is part of the Trezor project.
+#
+# Copyright (C) SatoshiLabs and contributors
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the License along with this library.
+# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
+
+from __future__ import annotations
+
+import sys
+import typing as t
+
+import click
+from mnemonic import Mnemonic
+
+from .. import device, messages
+from ..client import MAX_PIN_LENGTH
+from ..exceptions import Cancelled
+from ..messages import PinMatrixRequestType, WordRequestType
+
+PIN_MATRIX_DESCRIPTION = """
+Use the numeric keypad or lowercase letters to describe number positions.
+
+The layout is:
+
+    7 8 9        e r t
+    4 5 6  -or-  d f g
+    1 2 3        c v b
+""".strip()
+
+RECOVERY_MATRIX_DESCRIPTION = """
+Use the numeric keypad to describe positions.
+For the word list use only left and right keys.
+Use backspace to correct an entry.
+
+The keypad layout is:
+    7 8 9     7 | 9
+    4 5 6     4 | 6
+    1 2 3     1 | 3
+""".strip()
+
+PIN_GENERIC = None
+PIN_CURRENT = PinMatrixRequestType.Current
+PIN_NEW = PinMatrixRequestType.NewFirst
+PIN_CONFIRM = PinMatrixRequestType.NewSecond
+WIPE_CODE_NEW = PinMatrixRequestType.WipeCodeFirst
+WIPE_CODE_CONFIRM = PinMatrixRequestType.WipeCodeSecond
+
+# Workaround for limitation of Git Bash
+# getpass function does not work correctly on Windows when not using a real terminal
+# (the hidden input is not allowed and it also freezes the script completely)
+# Details: https://bugs.python.org/issue44762
+CAN_HANDLE_HIDDEN_INPUT = sys.stdin and sys.stdin.isatty()
+
+
+def echo(*args: t.Any, **kwargs: t.Any) -> None:
+    return click.echo(*args, err=True, **kwargs)
+
+
+def prompt(text: str, *, hide_input: bool = False, **kwargs: t.Any) -> t.Any:
+    # Disallowing hidden input and warning user when it would cause issues
+    if not CAN_HANDLE_HIDDEN_INPUT and hide_input:
+        hide_input = False
+        text += " (WARNING: will be displayed!)"
+    return click.prompt(text, hide_input=hide_input, err=True, **kwargs)
+
+
+class ClickUI:
+    def __init__(
+        self, always_prompt: bool = False, passphrase_on_host: bool = False
+    ) -> None:
+        self.pinmatrix_shown = False
+        self.last_prompt_shown = ""
+        self.always_prompt = always_prompt
+        self.passphrase_on_host = passphrase_on_host
+
+    def _prompt_for_button(self, br: messages.ButtonRequest) -> str:
+        if br.code == messages.ButtonRequestType.PassphraseEntry:
+            return "Please enter passphrase on your Trezor device."
+        if br.code == messages.ButtonRequestType.PinEntry:
+            return "Please enter PIN on your Trezor device."
+
+        return "Please confirm action on your Trezor device."
+
+    def button_request(self, br: messages.ButtonRequest) -> None:
+        prompt = self._prompt_for_button(br)
+        if prompt != self.last_prompt_shown:
+            echo(prompt)
+        if not self.always_prompt:
+            self.last_prompt_shown = prompt
+
+    def get_pin(self, request: messages.PinMatrixRequest) -> str:
+        code = request.type
+        if code == PIN_CURRENT:
+            desc = "current PIN"
+        elif code == PIN_NEW:
+            desc = "new PIN"
+        elif code == PIN_CONFIRM:
+            desc = "new PIN again"
+        elif code == WIPE_CODE_NEW:
+            desc = "new wipe code"
+        elif code == WIPE_CODE_CONFIRM:
+            desc = "new wipe code again"
+        else:
+            desc = "PIN"
+
+        if not self.pinmatrix_shown:
+            echo(PIN_MATRIX_DESCRIPTION)
+            if not self.always_prompt:
+                self.pinmatrix_shown = True
+
+        while True:
+            try:
+                pin = prompt(f"Please enter {desc}", hide_input=True)
+            except click.Abort:
+                raise Cancelled from None
+
+            # translate letters to numbers if letters were used
+            if all(d in "cvbdfgert" for d in pin):
+                pin = pin.translate(str.maketrans("cvbdfgert", "123456789"))
+
+            if any(d not in "123456789" for d in pin):
+                echo(
+                    "The value may only consist of digits 1 to 9 or letters cvbdfgert."
+                )
+            elif len(pin) > MAX_PIN_LENGTH:
+                echo(f"The value must be at most {MAX_PIN_LENGTH} digits in length.")
+            else:
+                return pin
+
+
+class ScriptUI:
+    """Interface to be used by scripts, not directly by user.
+
+    Communicates with a client application using print() and input().
+
+    Lot of `ClickUI` logic is outsourced to the client application, which
+    is responsible for supplying the PIN and passphrase.
+
+    Reference client implementation can be found under `tools/trezorctl_script_client.py`.
+    """
+
+    @staticmethod
+    def button_request(br: messages.ButtonRequest) -> None:
+        code = br.code.name if br.code else None
+        print(f"?BUTTON code={code} pages={br.pages} name={br.name}")
+
+    @staticmethod
+    def get_pin(request: messages.PinMatrixRequest) -> str:
+        code = request.type
+        if code is None:
+            print("?PIN")
+        else:
+            print(f"?PIN code={code.name}")
+
+        pin = input()
+        if pin == "CANCEL":
+            raise Cancelled from None
+        elif not pin.startswith(":"):
+            raise RuntimeError("Sent PIN must start with ':'")
+        else:
+            pin = pin[1:]
+            return pin
+
+
+def mnemonic_words(
+    expand: bool = False, language: str = "english"
+) -> t.Callable[[WordRequestType], str]:
+    if expand:
+        wordlist = Mnemonic(language).wordlist
+    else:
+        wordlist = []
+
+    def expand_word(word: str) -> str:
+        if not expand:
+            return word
+        if word in wordlist:
+            return word
+        matches = [w for w in wordlist if w.startswith(word)]
+        if len(matches) == 1:
+            return matches[0]
+        echo("Choose one of: " + ", ".join(matches))
+        raise KeyError(word)
+
+    def get_word(type: WordRequestType) -> str:
+        assert type == WordRequestType.Plain
+        while True:
+            try:
+                word = prompt("Enter one word of mnemonic")
+                return expand_word(word)
+            except KeyError:
+                pass
+            except click.Abort:
+                raise Cancelled from None
+
+    return get_word
+
+
+def matrix_words(type: WordRequestType) -> str:
+    while True:
+        try:
+            ch = click.getchar()
+        except (KeyboardInterrupt, EOFError):
+            raise Cancelled from None
+
+        if ch in "\x04\x1b":
+            # Ctrl+D, Esc
+            raise Cancelled
+        if ch in "\x08\x7f":
+            # Backspace, Del
+            return device.RECOVERY_BACK
+        if type == WordRequestType.Matrix6 and ch in "147369":
+            return ch
+        if type == WordRequestType.Matrix9 and ch in "123456789":
+            return ch
diff --git a/python/src/trezorlib/construct_helpers.py b/python/src/trezorlib/construct_helpers.py
new file mode 100644
index 00000000..f4e166ad
--- /dev/null
+++ b/python/src/trezorlib/construct_helpers.py
@@ -0,0 +1,50 @@
+# This file is part of the Trezor project.
+#
+# Copyright (C) SatoshiLabs and contributors
+#
+# This library is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the License along with this library.
+# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
+
+from __future__ import annotations
+
+import typing as t
+from enum import Enum
+
+import construct
+
+
+class EnumAdapter(construct.Adapter):
+    def __init__(self, subcon: construct.Adapter, enum: type[Enum]) -> None:
+        self.enum = enum
+        super().__init__(subcon)
+
+    def _encode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
+        if isinstance(obj, self.enum):
+            return obj.value
+        return obj
+
+    def _decode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
+        try:
+            return self.enum(obj)
+        except ValueError:
+            return obj
+
+
+class TupleAdapter(construct.Adapter):
+    def __init__(self, *subcons: construct.Adapter) -> None:
+        super().__init__(construct.Sequence(*subcons))
+
+    def _encode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
+        return obj
+
+    def _decode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
+        return tuple(obj)
diff --git a/python/src/trezorlib/definitions.py b/python/src/trezorlib/definitions.py
index f7f60e33..ce047fb5 100644
--- a/python/src/trezorlib/definitions.py
+++ b/python/src/trezorlib/definitions.py
@@ -24,8 +24,8 @@ import requests
 from construct_classes import Struct, subcon
 
 from . import cosi, merkle_tree
+from .construct_helpers import EnumAdapter
 from .messages import DefinitionType
-from .tools import EnumAdapter
 
 LOG = logging.getLogger(__name__)
 
diff --git a/python/src/trezorlib/firmware/core.py b/python/src/trezorlib/firmware/core.py
index 219d9116..732bb27d 100644
--- a/python/src/trezorlib/firmware/core.py
+++ b/python/src/trezorlib/firmware/core.py
@@ -25,7 +25,7 @@ import construct as c
 from construct_classes import Struct, subcon
 
 from .. import cosi, merkle_tree
-from ..tools import EnumAdapter, TupleAdapter
+from ..construct_helpers import EnumAdapter, TupleAdapter
 from . import consts, models, util
 from .models import Model
 from .vendor import VendorHeader
diff --git a/python/src/trezorlib/firmware/secmon.py b/python/src/trezorlib/firmware/secmon.py
index 651f798d..ca02fcb7 100644
--- a/python/src/trezorlib/firmware/secmon.py
+++ b/python/src/trezorlib/firmware/secmon.py
@@ -21,7 +21,7 @@ from copy import copy
 import construct as c
 from construct_classes import Struct, subcon
 
-from ..tools import EnumAdapter, TupleAdapter
+from ..construct_helpers import EnumAdapter, TupleAdapter
 from . import util
 from .models import Model
 
diff --git a/python/src/trezorlib/firmware/vendor.py b/python/src/trezorlib/firmware/vendor.py
index f96be5e1..202e99ab 100644
--- a/python/src/trezorlib/firmware/vendor.py
+++ b/python/src/trezorlib/firmware/vendor.py
@@ -24,8 +24,8 @@ import construct as c
 from construct_classes import Struct, subcon
 
 from .. import cosi
+from ..construct_helpers import EnumAdapter, TupleAdapter
 from ..toif import ToifStruct
-from ..tools import EnumAdapter, TupleAdapter
 from . import util
 from .models import Model
 
diff --git a/python/src/trezorlib/toif.py b/python/src/trezorlib/toif.py
index b93af7e5..1076bd09 100644
--- a/python/src/trezorlib/toif.py
+++ b/python/src/trezorlib/toif.py
@@ -23,7 +23,7 @@ from typing import Sequence, Tuple
 import construct as c
 from typing_extensions import Literal
 
-from .tools import EnumAdapter
+from .construct_helpers import EnumAdapter
 
 try:
     # Explanation of having to use "Image.Image" in typing:
diff --git a/python/src/trezorlib/tools.py b/python/src/trezorlib/tools.py
index 135d950d..c8c0940d 100644
--- a/python/src/trezorlib/tools.py
+++ b/python/src/trezorlib/tools.py
@@ -23,9 +23,7 @@ import struct
 import typing as t
 import unicodedata
 from contextlib import AbstractContextManager
-from enum import Enum
 
-import construct
 import typing_extensions as tx
 
 from . import messages
@@ -324,34 +322,6 @@ def descriptor_checksum(desc: str) -> str:
     return "".join(ret)
 
 
-class EnumAdapter(construct.Adapter):
-    def __init__(self, subcon: construct.Adapter, enum: type[Enum]) -> None:
-        self.enum = enum
-        super().__init__(subcon)
-
-    def _encode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
-        if isinstance(obj, self.enum):
-            return obj.value
-        return obj
-
-    def _decode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
-        try:
-            return self.enum(obj)
-        except ValueError:
-            return obj
-
-
-class TupleAdapter(construct.Adapter):
-    def __init__(self, *subcons: construct.Adapter) -> None:
-        super().__init__(construct.Sequence(*subcons))
-
-    def _encode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
-        return obj
-
-    def _decode(self, obj: t.Any, context: t.Any, path: t.Any) -> t.Any:
-        return tuple(obj)
-
-
 def enter_context(context_func: ContextFunc[CM, P, R]) -> ContextFunc[CM, P, R]:
     """Generic wrapper around any function or method that accepts a context manager
     as its first argument.
diff --git a/python/src/trezorlib/ui.py b/python/src/trezorlib/ui.py
deleted file mode 100644
index 7194d3ff..00000000
--- a/python/src/trezorlib/ui.py
+++ /dev/null
@@ -1,224 +0,0 @@
-# This file is part of the Trezor project.
-#
-# Copyright (C) SatoshiLabs and contributors
-#
-# This library is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Lesser General Public License version 3
-# as published by the Free Software Foundation.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Lesser General Public License for more details.
-#
-# You should have received a copy of the License along with this library.
-# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
-
-from __future__ import annotations
-
-import sys
-import typing as t
-
-import click
-from mnemonic import Mnemonic
-
-from . import device, messages
-from .client import MAX_PIN_LENGTH
-from .exceptions import Cancelled
-from .messages import PinMatrixRequestType, WordRequestType
-
-PIN_MATRIX_DESCRIPTION = """
-Use the numeric keypad or lowercase letters to describe number positions.
-
-The layout is:
-
-    7 8 9        e r t
-    4 5 6  -or-  d f g
-    1 2 3        c v b
-""".strip()
-
-RECOVERY_MATRIX_DESCRIPTION = """
-Use the numeric keypad to describe positions.
-For the word list use only left and right keys.
-Use backspace to correct an entry.
-
-The keypad layout is:
-    7 8 9     7 | 9
-    4 5 6     4 | 6
-    1 2 3     1 | 3
-""".strip()
-
-PIN_GENERIC = None
-PIN_CURRENT = PinMatrixRequestType.Current
-PIN_NEW = PinMatrixRequestType.NewFirst
-PIN_CONFIRM = PinMatrixRequestType.NewSecond
-WIPE_CODE_NEW = PinMatrixRequestType.WipeCodeFirst
-WIPE_CODE_CONFIRM = PinMatrixRequestType.WipeCodeSecond
-
-# Workaround for limitation of Git Bash
-# getpass function does not work correctly on Windows when not using a real terminal
-# (the hidden input is not allowed and it also freezes the script completely)
-# Details: https://bugs.python.org/issue44762
-CAN_HANDLE_HIDDEN_INPUT = sys.stdin and sys.stdin.isatty()
-
-
-def echo(*args: t.Any, **kwargs: t.Any) -> None:
-    return click.echo(*args, err=True, **kwargs)
-
-
-def prompt(text: str, *, hide_input: bool = False, **kwargs: t.Any) -> t.Any:
-    # Disallowing hidden input and warning user when it would cause issues
-    if not CAN_HANDLE_HIDDEN_INPUT and hide_input:
-        hide_input = False
-        text += " (WARNING: will be displayed!)"
-    return click.prompt(text, hide_input=hide_input, err=True, **kwargs)
-
-
-class ClickUI:
-    def __init__(
-        self, always_prompt: bool = False, passphrase_on_host: bool = False
-    ) -> None:
-        self.pinmatrix_shown = False
-        self.last_prompt_shown = ""
-        self.always_prompt = always_prompt
-        self.passphrase_on_host = passphrase_on_host
-
-    def _prompt_for_button(self, br: messages.ButtonRequest) -> str:
-        if br.code == messages.ButtonRequestType.PassphraseEntry:
-            return "Please enter passphrase on your Trezor device."
-        if br.code == messages.ButtonRequestType.PinEntry:
-            return "Please enter PIN on your Trezor device."
-
-        return "Please confirm action on your Trezor device."
-
-    def button_request(self, br: messages.ButtonRequest) -> None:
-        prompt = self._prompt_for_button(br)
-        if prompt != self.last_prompt_shown:
-            echo(prompt)
-        if not self.always_prompt:
-            self.last_prompt_shown = prompt
-
-    def get_pin(self, request: messages.PinMatrixRequest) -> str:
-        code = request.type
-        if code == PIN_CURRENT:
-            desc = "current PIN"
-        elif code == PIN_NEW:
-            desc = "new PIN"
-        elif code == PIN_CONFIRM:
-            desc = "new PIN again"
-        elif code == WIPE_CODE_NEW:
-            desc = "new wipe code"
-        elif code == WIPE_CODE_CONFIRM:
-            desc = "new wipe code again"
-        else:
-            desc = "PIN"
-
-        if not self.pinmatrix_shown:
-            echo(PIN_MATRIX_DESCRIPTION)
-            if not self.always_prompt:
-                self.pinmatrix_shown = True
-
-        while True:
-            try:
-                pin = prompt(f"Please enter {desc}", hide_input=True)
-            except click.Abort:
-                raise Cancelled from None
-
-            # translate letters to numbers if letters were used
-            if all(d in "cvbdfgert" for d in pin):
-                pin = pin.translate(str.maketrans("cvbdfgert", "123456789"))
-
-            if any(d not in "123456789" for d in pin):
-                echo(
-                    "The value may only consist of digits 1 to 9 or letters cvbdfgert."
-                )
-            elif len(pin) > MAX_PIN_LENGTH:
-                echo(f"The value must be at most {MAX_PIN_LENGTH} digits in length.")
-            else:
-                return pin
-
-
-class ScriptUI:
-    """Interface to be used by scripts, not directly by user.
-
-    Communicates with a client application using print() and input().
-
-    Lot of `ClickUI` logic is outsourced to the client application, which
-    is responsible for supplying the PIN and passphrase.
-
-    Reference client implementation can be found under `tools/trezorctl_script_client.py`.
-    """
-
-    @staticmethod
-    def button_request(br: messages.ButtonRequest) -> None:
-        code = br.code.name if br.code else None
-        print(f"?BUTTON code={code} pages={br.pages} name={br.name}")
-
-    @staticmethod
-    def get_pin(request: messages.PinMatrixRequest) -> str:
-        code = request.type
-        if code is None:
-            print("?PIN")
-        else:
-            print(f"?PIN code={code.name}")
-
-        pin = input()
-        if pin == "CANCEL":
-            raise Cancelled from None
-        elif not pin.startswith(":"):
-            raise RuntimeError("Sent PIN must start with ':'")
-        else:
-            pin = pin[1:]
-            return pin
-
-
-def mnemonic_words(
-    expand: bool = False, language: str = "english"
-) -> t.Callable[[WordRequestType], str]:
-    if expand:
-        wordlist = Mnemonic(language).wordlist
-    else:
-        wordlist = []
-
-    def expand_word(word: str) -> str:
-        if not expand:
-            return word
-        if word in wordlist:
-            return word
-        matches = [w for w in wordlist if w.startswith(word)]
-        if len(matches) == 1:
-            return matches[0]
-        echo("Choose one of: " + ", ".join(matches))
-        raise KeyError(word)
-
-    def get_word(type: WordRequestType) -> str:
-        assert type == WordRequestType.Plain
-        while True:
-            try:
-                word = prompt("Enter one word of mnemonic")
-                return expand_word(word)
-            except KeyError:
-                pass
-            except click.Abort:
-                raise Cancelled from None
-
-    return get_word
-
-
-def matrix_words(type: WordRequestType) -> str:
-    while True:
-        try:
-            ch = click.getchar()
-        except (KeyboardInterrupt, EOFError):
-            raise Cancelled from None
-
-        if ch in "\x04\x1b":
-            # Ctrl+D, Esc
-            raise Cancelled
-        if ch in "\x08\x7f":
-            # Backspace, Del
-            return device.RECOVERY_BACK
-        if type == WordRequestType.Matrix6 and ch in "147369":
-            return ch
-        if type == WordRequestType.Matrix9 and ch in "123456789":
-            return ch