### Spanish Translation Update v.0.8.0

- Added new strings

Co-Authored-By: SpootyMcSpoot <6732450+spootymcspoot@users.noreply.github.com>

Co-Authored-By: Dario Ruellan <6965667+druellan@users.noreply.github.com>

Stop trimming trailing slashes from MCP server URLs on save. Some MCP
servers (e.g. Bitrix24) require a trailing slash; removing it triggers a
301 redirect that drops Authorization headers, resulting in 400 errors.

The trailing-slash trim is now skipped when the connection type is 'mcp',
while OpenAPI connections continue to have it stripped as before.

Fixes #21179

* changelog: oauth session error handling

* changelog: task model selector validation fix

* changelog: skill content handling

* changelog: add Spanish and German translations

* changelog: move skill content to Added section

* changelog: tool call, validation fixes

* changelog: tool call message preservation links

* changelog: update per-model tool toggles entry with per-conversation chat toggle feature

* changelog: tool-server, startup, initialization

* changelog: remove empty Changed section

* changelog: fix duplicate Fixed section

* changelog: revert old entry, add new entry to 0.8.2

* changelog: move built-in tool toggles to Added section

* changelog: update date to 2026-02-16

* changelog: resource handle cleanup, file descriptors, leak fix

* changelog: image preview, file modal, modal enhancement

* i18n: add missing Russian (ru-RU) translations

* i18n: add translations for API Keys and Asc keys

Save and restore scroll positions around textarea auto-resize to avoid
layout shifts. Use preventScroll on focus.