Electrum

qt: ElectrumGui: repr(UserFacingException) -> str()

Show UserFacingException in ElectrumGui.start_new_window
as str() to the user, ther doesn't seem to be a good reason
to show its repr?

wizard: catch NotLegacySinglesigScriptType

Catch NetLegacySinglesigScriptType and convert it to a
UserFacingException if the user tries to import a private key for which
it is not possible to get a singlesig descriptor (e.g. p2wsh).

Fixes #10536

pem.py, x509.py: rm unused code

now that bip70 support is removed, all this is only used to check expiration of self-signed electrum server certs in interface.py

rm bip70 support

- could not find a single project that still actually cares about bip70 [0]
- well except maybe BitPay.
- but I cannot test with BitPay:
- they have a testnet3 staging environment on test.bitpay.com
- but the SSL cert they use for bip70 has expired in 2021
- the webUI probably also has not been updated since then...
- they claim to have added LN support in 2022 in a blog post,
but it's not there on test.bitpay.com
- on mainnet, they require KYC before payment
- < ... angry noises >
- their loss then, I don't care.
- this is code that no one wants to maintain

- this does not yet delete the signed bip70 payment data for historical txs
- but it is no longer possible to export it from the GUI

[0]: https://bitcoinops.org/en/topics/bip70-payment-protocol/

interface.py: rm broken dead code

As it's failing due to relative imports, this might have been broken since py2->py3 migration.
```
$ python3 ./electrum/interface.py
Traceback (most recent call last):
File "/home/user/wspace/electrum/./electrum/interface.py", line 31, in <module>
import asyncio
File "/usr/lib/python3.13/asyncio/__init__.py", line 8, in <module>
from .base_events import *
File "/usr/lib/python3.13/asyncio/base_events.py", line 18, in <module>
import concurrent.futures
File "/usr/lib/python3.13/concurrent/futures/__init__.py", line 8, in <module>
from concurrent.futures._base import (FIRST_COMPLETED,
...<9 lines>...
as_completed)
File "/usr/lib/python3.13/concurrent/futures/_base.py", line 7, in <module>
import logging
File "/home/user/wspace/electrum/electrum/logging.py", line 6, in <module>
import logging.handlers
ModuleNotFoundError: No module named 'logging.handlers'; 'logging' is not a package
```

interface.py: rm dead code

mv os.urandom sanity check to main __init__.py

cool check but I am going to delete rsakey.py

fixup prev

qt, qml: for new transaction notifications, instead of using sign, explicitly say sent/received.
For multiple transactions, split summary in total sent/received and a balance change.

move duplicated code to wallet.get_user_notifications_for_new_txns()

adb.get_spender: subscribe to outputs explicitly, instead of as a side effect

This allows to subscribe only if we need it (for channel closing tx and htlcs)

follow-up #10442

this assert fails if we do not have the preimage

add more options to list_channels

swaps: make SwapManager.percentage Decimal

If SwapManager.percentage was a 0.2 float, rounding differences would
cause an exception in the fee calculation inverse sanity check when entering 20
000 sats into the SwapDialog. By making self.percentage a decimal we can
prevent this kind of issue.

```
File "/home/user/code/vibecoding_vm/electrum/electrum/gui/qt/swap_dialog.py", line 294, in on_send_edited
recv_amount = self.swap_manager.get_recv_amount(send_amount, is_reverse=self.is_reverse)
File "/home/user/code/vibecoding_vm/electrum/electrum/submarine_swaps.py", line 1320, in get_recv_amount
if abs(send_amount - inverted_send_amount) > 1:
~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
TypeError: unsupported operand type(s) for -: 'int' and 'NoneType'
```

trampoline: allow trampoline onion packets of arbitrary size

qt: PluginsDialog: add link to website

Adds a link to the plugins.electrum.org website so users who open the
plugins dialog out of curiosity get guided to the website and can
discover other plugins and learn more about the system.

swapserver: cli: skip pending swaps in history commands

skip pending swaps in the swapserver history/summary cli commands.
They are not relevant and don't contain all required informations yet.

Fixes https://github.com/spesmilo/electrum/issues/10521
Fixes https://github.com/spesmilo/electrum/issues/10525

```
 File "/home/electrum/electrum-fork/electrum/daemon.py", line 268, in handle
   response['result'] = await f(*params)
                        ^^^^^^^^^^^^^^^^
 File "/home/electrum/electrum-fork/electrum/daemon.py", line 381, in run_cmdline
   result = await func(*args, **kwargs)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/home/electrum/electrum-fork/electrum/commands.py", line 207, in func_wrapper
 File "/home/electrum/electrum-fork/electrum/commands.py", line 2349, in func_wrapper
   group = parser.add_argument_group('network options')
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/home/electrum/electrum-fork/electrum/plugins/swapserver/__init__.py", line 79, in get_summary
   swap_history = await get_history(self)
                  ^^^^^^^^^^^^^^^^^^^^^^^
 File "/home/electrum/electrum-fork/electrum/commands.py", line 207, in func_wrapper
 File "/home/electrum/electrum-fork/electrum/commands.py", line 2349, in func_wrapper
   group = parser.add_argument_group('network options')
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 File "/home/electrum/electrum-fork/electrum/plugins/swapserver/__init__.py", line 60, in get_history
   'date': swap['date'].strftime("%Y-%m-%d"),
           ^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'strftime'
```

tests: move qml stuff to tests/qml/

swaps: rm until filter when fetching server pairs

The `until` filter would limit the relay to only send us events created
up until this timestamp. If the user opens a swap transport by opening
the swap dialog, and keeps the dialog open the dialog will naturally age
above this limit and the relay will stop sending the client swapserver
events as they have (legitimately) been created after this timestamp.

As sanity check we still have the comparison against the current
timestamp in the event parsing loop to prevent pre/backdating.

Fixes https://github.com/spesmilo/electrum/issues/10520

qt: SwapServerDialog: resize server list with dialog

Waste less space in the dialog by limiting the stretch to 10px and
resize the servers_list with the dialog by setting stretch=1 so it can
be made larger.

Fixes https://github.com/spesmilo/electrum/issues/10519

tests: move revealer and timelock_recovery stuff to tests/plugins/

plugins: timelock_recovery: move checksum func to base class

don't import qt from tests unless it is qt being tested

tests: timelock_recovery plugin: add test vector for checksum from bip

test_checksum_non_ascii

Fix checksum following BIP-128 standard

Non-Ascii characters should not be converted for
checksum calculation.
This will give consistent hash to BIP-128 and its
Javascript code example.

Timelock-Recovery Plans that contained only ascii
characters are not affected.

Also, 8 hex-chars is enough for a checksum.

tests: lnpeer: uncomment testcase: test_modern_shutdown_no_overlap

This test case has always been disabled, but looks like the justification is easy to fix.