PR_26175_ALFA_017: consolidate Alfa Game Hub interaction runtime changes

[ToolboxAid]

Summary

• Consolidates the current-main-safe Alfa Batch C Game Hub interaction behavior.
• Always renders Source Idea and Readiness Output as the two child rows for expanded Game Hub parent rows.
• Updates focused Game Hub Playwright expectations for the stable child-row contract.

Reports

• docs_build/dev/reports/codex_review.diff
• docs_build/dev/reports/codex_changed_files.txt
• docs_build/dev/reports/PR_26175_ALFA_017-alfa-game-hub-interactions-consolidation.md
• tmp/PR_26175_ALFA_017-alfa-game-hub-interactions-consolidation_delta.zip

Validation

• PASS: node --check toolbox/game-hub/game-hub.js
• PASS: node --check tests/playwright/tools/GameHubMockRepository.spec.mjs
• PASS: node --check tests/playwright/tools/IdeaBoardTableNotes.spec.mjs
• PASS: node --check tests/playwright/tools/GameJourneyTool.spec.mjs
• PASS: git diff --check -- toolbox/game-hub/game-hub.js tests/playwright/tools/GameHubMockRepository.spec.mjs
• PASS: status-bar diff check empty
• BLOCKED: Playwright browser run blocked because Chromium executable is missing locally; Chromium was not installed per instruction.