Epic ETP-3241: Update copilot variables, add documentation for new fields and the sync on start up process

[fran-roig]

No description provided.

[Copilot]

Pull request overview

This PR updates Etendo Copilot documentation to reflect new/renamed configuration variables and to document new Agent header fields related to visibility and synchronization, in both English and Spanish guides.

Changes:

• Renames documented gradle.properties keys to dotted lower-case forms (e.g., etendo.host, openai.api.key, copilot.port) across user/developer guides.
• Documents new Agent header fields (e.g., Agent Scope, Sync on Startup, Featured) and updates related UI explanations/screenshots.
• Updates Prompt dynamic variable tokens to match the new property keys (e.g., @etendo.host@).

Reviewed changes

Copilot reviewed 16 out of 18 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
docs/user-guide/etendo-copilot/setup-and-usage.md	Adds/updates Agent header field documentation and Prompt dynamic variable names.
docs/user-guide/etendo-copilot/bundles/sql-expert.md	Updates setup instructions to use the new etendo.host property name.
docs/es/user-guide/etendo-copilot/setup-and-usage.md	Mirrors Agent header/Prompt variable documentation updates in Spanish.
docs/es/user-guide/etendo-copilot/bundles/sql-expert.md	Mirrors SQL Expert setup variable rename in Spanish.
docs/developer-guide/etendo-copilot/installation.md	Updates installation examples/table to the new dotted property keys.
docs/es/developer-guide/etendo-copilot/installation.md	Mirrors installation variable updates in Spanish.
docs/developer-guide/etendo-copilot/how-to-guides/how-to-export-tools-and-assistants.md	Updates export guidance to reference Agent Scope instead of the old System App checkbox.
docs/es/developer-guide/etendo-copilot/how-to-guides/how-to-export-tools-and-assistants.md	Mirrors export guidance changes in Spanish.
docs/developer-guide/etendo-copilot/how-to-guides/how-to-create-copilot-tools.md	Updates environment-variable mapping examples to align with dotted keys.
docs/es/developer-guide/etendo-copilot/how-to-guides/how-to-create-copilot-tools.md	Mirrors environment-variable mapping example updates in Spanish.
docs/developer-guide/etendo-copilot/how-to-guides/how-to-create-an-agent.md	Updates Prompt variable tokens and adds new header-field guidance.
docs/es/developer-guide/etendo-copilot/how-to-guides/how-to-create-an-agent.md	Mirrors Prompt variable/token updates in Spanish.
docs/developer-guide/etendo-copilot/how-to-guides/how-to-configure-etendo-copilot-proxy.md	Updates proxy setup docs (including .env credential examples).
docs/es/developer-guide/etendo-copilot/how-to-guides/how-to-configure-etendo-copilot-proxy.md	Mirrors proxy setup doc updates in Spanish.
docs/developer-guide/etendo-copilot/available-tools/task-creator-tool.md	Updates referenced host variable name in tool documentation.
docs/es/developer-guide/etendo-copilot/available-tools/task-creator-tool.md	Mirrors task creator tool doc updates in Spanish.
docs/assets/user-guide/etendo-copilot/setup/assistant-window.png	Screenshot asset referenced/maintained alongside updated Agent window docs.

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