Electrum

lnmsg: pass filename as parameter instead of boolean

lnworker: don't connect to onion peers if no proxy

When gossip is enabled we waste a lot of time trying to connect
to onion peers if we don't have a proxy enabled. We should just skip
them and try to connect to clearnet peers instead.

lnpeermgr: add_peer: fix check if proxy enabled

LNPeerManager.add_peer would only check if self.network.proxy is set,
which it is always as Network is initialized with self.proxy =
ProxySettings(). Instead it should check if proxy is set and enabled.

ServerConnectWizard: don't set autoconnect on user cancel

Don't set the NETWORK_AUTO_CONNECT config if the user checked the custom
server config checkbox and then cancels the wizard, so the next time the
user starts the wizard they again will have the choice instead of
silently being forced into a random server.
Currently if the user cancels the wizard during the network config the
welcome component will already have set the NETWORK_AUTO_CONNECT config
to False (as the user selected the custom server checkbox), preventing
the wizard from starting again on the next startup.

ServerConnectWizard: use default server instead of ''

Passes the default server (Network.default_server) to
Network.set_parameters instead of an empty string in
ServerConnectWizard.do_configure_server to avoid a traceback like in
I am not entirely sure how the user in #10437 managed to trigger
the exception as Network.set_parameters should already exit early at
`not self._was_started` in the Wizard as the network shouldn't have been
started yet during the wizard. However passing the default ServerAddr
instead of an empty string to set_parameters should avoid this
exception.

qml: validate server address in ServerConfig

Same as Qt, validate the server address the user enters and prevent the
user from continuing in the wizard or clicking 'Ok' in the ServerConfig
if the entered address is clearly invalid.

qt: ServerWidget/wizard: validate server_e

The `ServerWidget` didn't validate the input of server_e, which allowed
the user to enter an invalid server connection string and exit the
dialog without knowing they entered an invalid string.
In the wizard this behavior is very misleading as the user explicitly
wanted to use a custom server, can click next after entering an invalid
server, and we will just silently fall back to automatic server selection.

This change will disable the "Next" button in the wizard if an invalid
address has been entered and show a red background in the server_e while
the input is not valid, so the user clearly sees that this input is not
going to be used.

add plugin hook to utxo list menu

contrib: minor clean-up shell usage

contrib/add_cosigner: fix for python 3.13

This script used to work, I assume my breakage is due to the python version.

```
Traceback (most recent call last):
File "/home/user/wspace/electrum/./contrib/add_cosigner", line 35, in <module>
version_spec = importlib.util.spec_from_file_location('version', 'electrum/version.py')
^^^^^^^^^^^^^^
AttributeError: module 'importlib' has no attribute 'util'
```

qt: fix: addresses tab broken for imported watchonly wallets

fixes https://github.com/spesmilo/electrum/issues/10435

regression from https://github.com/spesmilo/electrum/pull/10376

qt: add changelog action to help menu in toolbar

Adds a "Changelog" action to the "Help" menu of the toolbar. This allows
users to open the RELEASE-NOTES file in the browser (from github).

build: appimage: fix fresh_clone builds for type2-runtime

Building the appimage with ELECBUILD_COMMIT unset would work,
however building with it set would not.

regression from https://github.com/spesmilo/electrum/commit/daaf7b7c6bd6eaa2975777f1092dc01248c680fd

bump version number to 4.7.0

update RELEASE-NOTES: minor formatting for 4.7.0

update block header checkpoints

update locale

Version 4.7.0 release notes

qt: TxEditor: restructure submarine payment messages

Show:
error
amount details
\n
proposed action

instead of:
error
proposed action
amount details

TxEditor: move swap request to TxEditor

Moves the logic requesting the forward swap into the TxEditor so it can
use the open transport and doesn't have to reconnect to the relays
again.

Also disables the "Preview" button in the TxEditor when the transaction will
send change to lightning.
This should prevent the user from saving the transaction to history and
broadcasting it later or exporting it and broadcasting it through some
external way.
Broadcasting needs to happen directly after the TxEditor so we can send
the second rpc call to the swapserver and await the incoming htlcs
before broadcasting the (funding-) transaction.

TxEditor: update dynamically based on swap transport

Update the TxEditor (onchain tab) if Send change to lightning is enabled
and the swap transport changes. Connect to swap transport if send change
to lightning gets enabled or if it is enabled and the TxEditor gets
opened.
This allows to nicely show the swap fees without blocking the UI to wait
until the swap manager gets initialized.

wallet: check swap provider liquidity for send change to ln

Check the swap providers liquidity as well if we try to send change to
lightning in `make_unsigned_transaction`. It is now expected that the
swap_manager is already initialized when calling
`make_unsigned_transaction`, otherwise no dummy output will get added.

qt: TxEditor: separate swap transport from tab

Separates the swap transport initialization logic from the submarine
payment tab logic so it can be used for the send change to lightning
functionality too.

Also makes the gui updates on transport establishment more thread safe
by using pyqtSignals instead of calling gui methods from the asyncio
thread.

TxEditor: move submarine payment help text to messages

Moves the help text for submarine payments to messages.py

qt: TxEditor: extend messages for send change to ln

Extend TxEditor.get_messages() with errors for the send change to
lightning function so users see why it wasn't used even though it is
enabled.