PR_26171_039 table first workspace governance

[ToolboxAid]

Summary

• Adds a TABLE-FIRST WORKSPACE GOVERNANCE section to docs_build/dev/PROJECT_INSTRUCTIONS.md.
• Documents table-first parent/child rules, accordion ownership, informational child counts, single-open/default-collapsed behavior, child indentation, hidden metadata, left-aligned self-describing Add buttons, and dropdown enumerated edit fields.
• Adds visual examples for default, expanded, normal, edit, and add row states plus explicit row-state Save/Cancel rules.

Validation

• PASS: git diff --check
• PASS: Confirmed TABLE-FIRST WORKSPACE GOVERNANCE heading exists.
• PASS: Confirmed visual examples exist.
• PASS: Confirmed Save/Cancel row-state example exists.
• PASS: No Playwright impact; docs/workflow only.

Artifact

• tmp/PR_26171_039-table-first-workspace-governance_delta.zip