docs(gravity-forms-abilities): add WordPress multisite section

[faction23]

Description

Closes: N/A - docs update from the multisite analysis, no tracked issue.

• Add a "WordPress Multisite Networks" subsection to the Multi-Site Management section of the gravity-forms-abilities skill.
• Document the connection model: each subsite is its own MCP endpoint. Configure one MCP server for each subsite URL.
• Document per-subsite configuration: MCP enablement, the tool allowlist, and the endpoint mode have no network toggle. A tool that is missing on one subsite is a configuration state, not an error.
• Document per-subsite capabilities: one credential can pass on one subsite and be denied on another. Super admins pass on all subsites.
• Document HTML filtering: users without unfiltered_html get notification and confirmation markup filtered on save. On multisite, only super admins have that capability.
• Document network-inherited license state in system-info. Tell agents not to ask subsite admins to change the license key.
• Bump the skill version to 1.0.5 and add a 1.1.2 changelog entry.

Testing instructions

1. Run ./scripts/validate-skills.sh. Confirm it reports 2 valid skills.
2. Open skills/gravity-forms-abilities/SKILL.md. Confirm the new subsection renders under "Multi-Site Management".
3. Confirm the frontmatter version is 1.0.5 and change_log.txt has a 1.1.2 section.

Checklist:

• This PR has a related test. (validate-skills.sh passes; content repo, no code tests)
• This PR has a related issue.
• I have considered what will happen when an existing user updates to this branch.

[Copilot]

Pull request overview

This PR updates the gravity-forms-abilities skill documentation to better cover WordPress multisite-specific behavior, and records the change in the repo changelog while bumping the skill’s internal version.

Changes:

• Bump gravity-forms-abilities skill version from 1.0.4 to 1.0.5.
• Add a “WordPress Multisite Networks” subsection under Multi-Site Management explaining per-subsite endpoints/config/capabilities and license behavior.
• Add a 1.1.2 entry to change_log.txt describing the documentation update.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
skills/gravity-forms-abilities/SKILL.md	Adds multisite guidance and bumps the skill version.
change_log.txt	Adds the 1.1.2 changelog entry documenting the update.

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