Add 2026 mid-year review for Hyperledger Fabric

[cendhu]

Summary

• add 2026 mid-year review for Hyperledger Fabric and Fabric-X
• document project progress, deliverables, second-half goals, contributor diversity, adoption, and lifecycle status
• add report to 2026 MidYear navigation and index

Testing

• git diff --check
• mkdocs build
• validated all 93 external links in report

Notes

mkdocs build passes with existing unrelated navigation warnings, including missing project-updates/2025/2025-Q4-lockness.md reference.

[git-vote]

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[Copilot]

Pull request overview

Adds the 2026 mid-year project update for Hyperledger Fabric / Fabric-X and wires it into the site navigation so it appears under the 2026 Project Updates section.

Changes:

• Add a new “2026 Mid-Year Review of Hyperledger Fabric and Fabric-X” report page.
• Add a “MidYear” section entry under 2026 Project Updates in both the per-year index and the global MkDocs nav.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
tac/project-updates/2026/index.md	Adds a MidYear section link to the new Fabric/Fabric-X mid-year report.
tac/project-updates/2026/2026-MidYear-Hyperledger-Fabric.md	New mid-year review content for Hyperledger Fabric and Fabric-X (Jan–Jun 2026).
mkdocs.yml	Adds the new report page to the MkDocs navigation under Project Updates → 2026 → MidYear.

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