Explain DOMStack build and watch architecture in a blog post

[bcomnes]

Summary

Adds a draft blog post explaining how DOMStack organizes page building, global data, and watch mode around clear responsibilities and lifetimes. Four Mermaid diagrams illustrate component ownership, the page pipeline, global-data boundaries, and watch recovery.

The post remains unpublished pending review. Its diagrams have a wider layout and scale to fit smaller screens while prose stays narrow. A page-scoped client bundle shares the existing Mermaid configuration and theme-aware styles with the implementation docs; no new dependency is needed.

Adds visible Draft badges to blog post headers, the index, and yearly archives. Published posts remain unbadged, and badges work without JavaScript.

Validation

• Six blog unit tests passed, including draft-only badges in index and archive output.
• Browser checks passed for diagrams, light/dark themes, responsive sizing, the no-JavaScript fallback, draft badges, and draft exclusion from production output and feeds. Existing documentation diagrams were also checked after sharing their assets.
• TypeScript and diff checks passed. Full ESLint passed for the original changes; targeted ESLint passed for the follow-up changes.
• Editor diagnostics reported two existing errors in unchanged tools/blog/shared.ts; those are outside this change.

[coveralls]

Coverage Report for CI Build 35462223094

Warning

No base build found for commit e0364f6 on master.
Coverage changes can't be calculated without a base build.
If a base build is processing, this comment will update automatically when it completes.

Coverage: 96.752%

Details

• Patch coverage: 1 of 1 lines across 1 file are fully covered (100%).

Uncovered Changes

No uncovered changes found.

Coverage Regressions

Requires a base build to compare against. How to fix this →

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Coverage Stats

Relevant Lines:	12061
Covered Lines:	11810
Line Coverage:	97.92%
Relevant Branches:	4105
Covered Branches:	3831
Branch Coverage:	93.33%
Branches in Coverage %:	Yes
Coverage Strength:	892.33 hits per line

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💛 - Coveralls