brave web:
  xpath selectors needed to be justified

brave images & videos:
  The JS code with the JS object was read incorrectly; not always, but quite
  often, it led to exceptions when the Python data structure was created from it.

BTW: A complete review was conducted and corrections or additions were made to
the type definitions.

To test all brave engines in once::

    !br !brimg !brvid !brnews weather

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

- if engine load fails, set the engine to inactive
- dont' load a engine, when the config says its inactive

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

When wikidata or any other engine with a init method (is active!)  raises an
exception in it's init method, the engine is never registered.

[1] https://github.com/searxng/searxng/issues/5456#issuecomment-3567790287

Closes: https://github.com/searxng/searxng/issues/5456
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

The difference between decompression with brotli or gzip in HTML files is
negligible for 3 MB of compiled binary package.

Introduced in https://github.com/searxng/searxng/commit/eaa694fb7d0e47b943bc6d6edb6cb6a40ab2d85e

Closes https://github.com/searxng/searxng/security/code-scanning/276
Closes https://github.com/searxng/searxng/security/dependabot/37

In [1] it can be seen that the bootload of the CURRENCIES cache takes about 2/3
of the time required to initialize SearXNG.  Whatever the absolute durations may
be, an explicit bootload during the SearXNG initialization is not required, as
the bootload is already ensured by the API of the CACHE.

- ``CurrenciesDB.name_to_iso4217``
- ``CurrenciesDB.iso4217_to_name``

The fact that the bootload now occurs on-demand should improve the
initialization time of SearXNG.

[1] https://github.com/searxng/searxng/issues/5223#issuecomment-3323083411

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

Issue was introduced by PR-5204 [1]

reported issue::

    logger.error("init method of engine %s failed (%s).", eng_proc.engine.name)
    TypeError: not enough arguments for format string

[1] https://github.com/searxng/searxng/pull/5204

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

Continuation of #5147 .. typification of the engine processors.

BTW:

- removed obsolete engine property https_support
- fixed & improved currency_convert
- engine instances can now implement a engine.setup method

[#5147] https://github.com/searxng/searxng/pull/5147

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

- pyright configuration [1]_
- stub files: types-lxml [2]_
- addition of various type hints
- enable use of new type system features on older Python versions [3]_
- ``.tool-versions`` - set python to lowest version we support (3.10.18) [4]_:
  Older versions typically lack some typing features found in newer Python
  versions.  Therefore, for local type checking (before commit), it is necessary
  to use the older Python interpreter.

.. [1] https://docs.basedpyright.com/v1.20.0/configuration/config-files/
.. [2] https://pypi.org/project/types-lxml/
.. [3] https://typing-extensions.readthedocs.io/en/latest/#
.. [4] https://mise.jdx.dev/configuration.html#tool-versions

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
Format: reST

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>