[kitamura-tetsuo]

Summary

Add an English-first development diary and its factually equivalent Japanese counterpart about dot's review of Outliner PR #5882: the off-document mouse-release fixture used two independent Playwright Mouse instances, so its purported fresh right-click carried stale left-button state.

• Distinguish source-derived input-producer evidence from recorded browser events, CI observations, implementation work and runtime completion.
• Follow the later earlier-failing chord tests without presenting them as reproduction of the old post-release failure.
• Both posts remain draft: true; this draft PR does not publish them.
• Only the two new Markdown articles are changed.

Validation

• Independent editorial/evidence review completed; opening attribution clarified in both languages.
• npm test: 6 passed.
• npm run build: successful, 24 pages; both drafts excluded.
• Isolated preview with only the two new draft flags disabled: successful, 26 pages; article bodies, reciprocal language links and seven matching public evidence links verified.
• Existing files match main f47b038. No browser visual inspection or local Outliner test/runtime execution is claimed.

Evidence

• [Grid horizontal access] Pan horizontally with Space + left drag outliner#5863
• Add Space-drag horizontal Grid panning outliner#5882 (comment)
• Add Space-drag horizontal Grid panning outliner#5882 (comment)
• Add Space-drag horizontal Grid panning outliner#5882 (comment)

No merge or production deployment is requested.

[cloudflare-workers-and-pages]

Deploying blog with    Cloudflare Pages

Latest commit:	02e34f4
Status:	✅  Deploy successful!
Preview URL:	https://2305c874.blog-9wr.pages.dev
Branch Preview URL:	https://dot-test-mouse-state-2026110.blog-9wr.pages.dev

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