v9.96 - Governed design sharding compact index

Summary

• Added P089 governed design sharding doctrine for compact parent design indexes and active child design shards.
• Updated document-design-control v1.11, project-documentation-standards v2.38, safe-file-reading v1.6, and document-consistency v1.10.
• Installed the 46 README-listed runtime rules and verified 46/46 source/runtime parity plus active runtime body sufficiency with destination extras observed-only.

Verification

• README Bash install array: 46 files
• README PowerShell install array: 46 files
• Source/runtime hash parity: passed for 46/46 active runtime rules
• Active runtime body sufficiency: passed for 46/46 active runtime rules
• Destination extras observed-only: shared-task-list-path-coordination.md, team-agent-coordination.md