[jung-thomas]

Summary

Release prep for 1.44.1 (follows the #3088 → #3089 pattern: this lands on DEV first, then a separate DEV→main promotion PR ships it to PROD).

• Bump .deploy/mta.yaml version 1.44.0 → 1.44.1 (the deploy source of truth per deploy-mta.cjs). Patch-level: the DEV→main delta since 1.44.0 is all fixes, 0 features.
• Refresh hugo/data/whats_new.json — 14 merged PRs since 1.44.0, summarized in community voice via the whats-new skill (total 1051 entries).

What 1.44.1 ships to PROD (all fixes)

• Tutorial backend deploys reliably again — patch-package moved to dependencies so CF staging no longer fails (fix(deploy): move patch-package to dependencies (unbreaks tutorials-srv staging) #3108).
• Quieter, more reliable cache under multi-instance load — atomic UPSERT in cds-caching (fix(cds-caching): atomic UPSERT in KeyvCDS.set to stop PK-collision error noise (#3102) #3107).
• Readable concept/topic/channel pages — container padding + capped relationship walls (fix(#3095): concept/topic/channel page layout — container padding + cap relationship walls #3106).
• Friendlier errors when content is briefly unavailable — missing-BLOB race degrades to styled page, not raw 500 (fix(content): degrade missing-BLOB race to styled page, not raw 500 (#3103) #3104/fix(content-serve): degrade missing-BLOB race to styled 404, not raw 500 (#3103) #3105).
• Tutorial file downloads work again — base64url encode fix in the render-link hook (fix(attachments): correct base64url encode in render-link hook (#3098) #3101).
• Feedback moderation actions work from the tutorial page — nav-path key resolution (fix(admin): Mark Irrelevant feedback action fails with 404 (#3080) #3100).
• Interactive directive-demo tutorials render correctly — code blocks, rich media, content reuse, tested-with panel, hotspots, Joule panel (fix(directive-demos): 7 broken tutorials — code-blocks + rich-media + content-reuse #3091–fix(directive-demos): tested-with param threading + image hotspot attr attachment #3094, Promote directive-demo fixes to main (7 broken demos → all verified on DEV) #3097, rebuild-pipeline fix(rebuild): propagate deployed CSS hash + real xref titles to HANA pages #3092).

Notes

• Only 2 files change here (version + whats-new JSON); no build-output artifacts.
• The DEV→main promotion PR (the one that actually reaches PROD) is opened next.

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