site: 3-part blog series on what's new since NBI 4.8#353
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Adds a feature deep-dive series to the blog, backdated across 5/26-5/28, covering the 5.0.0 and 5.0.1 surface as narrative posts (distinct from the existing v5.0.0 release-notes post): - 2026-05-26 Managing Claude's toolbox: Skills, MCP, and Plugins (the three new top-level Settings tabs and the admin-policy triad) - 2026-05-27 An agent-aware chat sidebar (progress feedback, refresh-on-disk, @-mention attach, terminal drag-drop, new-tab links, first-run tour) - 2026-05-28 Coding-agent launchers, Codex, and a hardened platform (launcher tiles, Codex via /responses, dynamic Copilot models, accessibility pass, security hardening, fastmcp to mcp) Each post follows the deep-dive conventions (post layout, /blog/<slug>/ permalink, description, sibling cross-links, a series-nav footer) and embeds raw UI screenshots under assets/images/whats-new-5x/ via root-relative /assets paths to match the post-rename site. The Skills and External-changes captures are cropped to keep a local username path and personal skill names out of the public images.
The org rename to plmbr moved the site to baseurl: / and url: https://plmbr.dev, but several places kept pre-rename forms that produce broken output: - `{{site.baseurl}}{% post_url %}` renders `//blog/...` under baseurl: /, which a browser reads as the host `blog`. Dropped the redundant `{{site.baseurl}}` prefix so cross-links render `/blog/...`. Fixes the new 5.x series posts and the four archived 2025 posts. - `_sass/_typography.scss` `@font-face` src pointed at `/notebook-intelligence/assets/fonts/*.woff2`, which 404s site-wide, silently falling back to system fonts on every page. Now `/assets/...`. (The head.html preload was already correct via relative_url.) - The four archived 2025 posts embedded images at `/notebook-intelligence/assets/images/...`, broken since the rename. Now `/assets/images/...`. Verified with a local Jekyll build + serve: fonts, all post images, and all cross-links return 200 and resolve to single-slash root-relative paths.
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Folded in a round of post-rename link/asset cleanup after a local Jekyll preview surfaced broken links and missing fonts (these were pre-existing, from the org rename to
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Summary
Adds a three-part feature deep-dive series to the blog, one post per day across 5/26 to 5/28. These complement the existing v5.0.0 release-notes post by going deeper on themes, in the narrative style of the 2025 deep-dives (not release notes). Together they cover the user-facing surface that shipped in 5.0.0 and 5.0.1.
Post 1 covers the three new top-level Settings tabs (Skills, Claude MCP Servers, Claude Plugins) and the
force-on/force-off/user-choiceadmin-policy model. Post 2 covers the agent-aware sidebar work: progress feedback during long turns, refresh-open-files-on-disk, workspace files as@-mention pointers, terminal drag-drop, AI-generated links opening in a new tab, and the first-run tour. Post 3 covers the coding-agent launcher tiles, Codex chat models routing through the/responsesendpoint, dynamic Copilot model discovery, the accessibility pass, and the security hardening plus thefastmcptomcpswap.Conventions followed
layout: post,/blog/<slug>/permalink,description, Pacific-time date. Notarchived, so they appear on the main blog index (and sort above the 5/22 release post).{{site.baseurl}}{% post_url ... %}and a series-nav footer on each post.assets/images/whats-new-5x/, embedded with root-relative/assets/...paths to match the post-rename site (baseurl: /).Production
Drafted by five expert-writer-persona agents (three post leads, a series editor, an accessibility writer), with screenshots captured live in JupyterLab via Playwright at the site's panel-capture sizes. Reviewed in two rounds by six reviewer agents (technical fact-check, Jekyll conventions, prose/style, screenshot/caption accuracy, tone/positioning, coverage/proportionality).
Round 1 found and round 2 confirmed fixed:
/notebook-intelligence/assets/...prefix that now 404s; corrected to/assets/....(#NNN)PR references; removed to match the blog's zero-PR-citation convention.Every technical claim (env var / traitlet / policy names, defaults, behaviors, and 5.0.0-vs-5.0.1 version attributions) was verified against the
mainCHANGELOG and code.Testing
Static-site content. Verified: all
post_urltargets resolve to files in this PR; all six image embeds resolve to committed files; front-matter/permalink/date consistency; zero em dashes; blog-index inclusion logic (archived != true).Risks / follow-ups
/notebook-intelligence/assets/...image prefix and likely have broken images on the live site; out of scope here, worth a separate cleanup.