AI Summarized Hacker News

Front-page articles summarized hourly.

Projects every RC live races and results

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Claude Cookbook

Overview of Claude Cookbook entries and tutorials spanning how to build Claude-powered agents, manage memory and context, coordinate multi-agent teams, implement programmatic tool calling, tool discovery with embeddings, RAG and knowledge graphs, security/cyber experiments, and practical case studies (data analysis, incident response, Slack bots, frontend prompts, image cropping). Includes agent SDKs across Docker/Modal/Kubernetes, memory persistence, prompt versioning, and end-to-end production patterns; invites community contributions.

Visualizing the Artemis II Mission

Foxglove builds a visualization of Artemis II: Orion’s real trajectory and hundreds of mission photos synchronized on a single timeline. Trajectory data from JPL Horizons and photos from Hank Green’s Artemis-Timeline feed into an MCAP via Python scripts; a NASA Artemis-viewer (AROW) Orion model with accurate solar-array poses drives the 3D scene. The UI splits into Data and Visuals tabs; a photo stepper extension lets users scrub through ~500 photos across 10 days, with all panels snapping to the current timestamp. The project is open-source on GitHub.

Russia's businesses under strain from Ukraine's attacks on Wildberries

Ukrainian drones struck Wildberries' Russian warehouses, hit at least four sites including Elektrostal, Kotovsk, Koledino, Krasnodar and Nevinnomyssk. The attacks devastated stock for hundreds of small sellers who rely on the marketplace. Casualties were reported: seven workers killed in Kotovsk and one wounded in Elektrostal. Kyiv says it hit major logistics facilities used to supply drone components; Russia denies platforms are battlefield suppliers. The strikes, on top of broader wartime pressures—tax rises, internet crackdowns, and an uptick in SME closures—underline how the war is affecting Russia’s civilian economy and livelihoods.

The PImpl idiom and the C++26 std:indirect type

Explains the PImpl idiom to hide implementation details and reduce compile-time ties. It compares three approaches: (1) raw pointer with Rule of Five, showing moved-from caveats and const issues; (2) std::unique_ptr<> for automatic resource management but still requires explicit copy semantics and incomplete type handling; (3) std::indirect<Impl> from C++26, which stores the object on the heap but behaves like a value: deep copies, partial const propagation, never null, and a valueless_after_move() check for moved-from state. The Widget example illustrates usage; GCC 16 currently supports std::indirect.

Flux 3

FLUX 3 is Black Forest Labs’ multimodal foundation model that learns from images, videos, and audio in one architecture to model an underlying world. Built on Self-Flow, it scales multi-modal data to enable text-to-video, image-to-video, video-to-video with references, and audio generation, plus multilingual dialogue and diverse visual styles. It supports action prediction via Self-Flow or partners like mimic robotics (FLUX-mimic). In Early Access, FLUX 3 Video, FLUX 3 Image, FLUX 3 Dev, and FLUX-mimic will roll out with private/open weights. The aim is to unify perception, prediction, and language in a single model.

Show HN: A factory simulator game built on Spreadsheets

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Modula-3 History Collection on Computer History Museum

Annotated collection tracing Modula-3’s birth, development, and use. This archive compiles documents, source code, and materials about language design, implementations, libraries, and applications. Edited by Paul McJones (last updated 5 July 2026). It covers design history (1984–1992), major implementations (SRC Modula-3, Olivetti, DEC SRC, PM3, CAM3, CM3), persistence and garbage collection work, distributed computing (network objects, ILU, Obliq), and notable projects (Trestle, VBTkit, JVideo, SPIN, Argo, Juno-2). Includes references, tutorials, and links to modern repositories.

For most US drivers, EVs offer emissions benefits and cost savings

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Zitron: The Subprime Datacenter Crisis

The piece argues the AI data-center boom mirrors a subprime crisis, built on SPV debt that hides risk and depends on future revenues. It outlines DSCRs, DSRA and non-recourse financing, where creditors are paid only if customer revenue arrives, risking losses if key tenants fail. Estimates place AI data-center debt over $500 billion, with much in private credit; demand for compute appears concentrated with OpenAI, Anthropic and a few hyperscalers rather than broad, sustainable demand. The author warns of a systemic collapse when revenue doesn’t materialize, criticizes media for underreporting risk, and notes possible rescue moves.

Quickly rewrite Git repository history

git-filter-repo is a fast, versatile tool to rewrite Git history, designed as a replacement for git filter-branch and surpassing BFG. It ships as a single Python script (installable by dropping into PATH) plus a library for building custom history rewrites. It includes an extensive user manual, examples, and a design focus on speed, safety, and extensibility. It is now recommended by the Git project. Prereqs: git >=2.36.0, Python3 >=3.6. It aims to offer analysis, keep/prune decisions, automatic repo shrinking, and OS-agnostic usage.

Why Sony can't bring back its classic Walkman models

Former Sony engineer Akira Tanaka explains six reasons Sony can’t simply revive its classic Walkmans (cassette, CD, MiniDisc). Parts and suppliers no longer exist; manufacturing know‑how and tooling are gone; the economics don’t justify the cost for small markets; MiniDisc media has vanished with no successor; development resources are focused on Android Hi‑Res digital players; and Tanaka is no longer at Sony, so critical knowledge isn’t retained. A faithful relaunch would require new designs and supply chains, not a true reissue.

Mourning Dan Williams

Dan Williams, longtime Linux kernel developer and former Linux Foundation Technical Advisory Board member, has died. A support fund is being organized for his family, and the community has shared condolences and plans for a celebration of life.

Freeze-Casting

The text instructs to set a user-agent and respect the site's robot policy, with references: https://w.wiki/4wJS and https://phabricator.wikimedia.org/T400119.

The Corporate Creep of Plex: Why it may be time to move to Jellyfin

The article argues Plex has shifted from a personal, self-hosted media hub to an ad-supported, cloud-dependent service, compromising user control. It cites centralized authentication outages, data collection, feature churn, and steep price hikes (lifetime pass up to $750; 5-year option). Jellyfin is presented as the open-source alternative: local authentication, no tracking, free native transcoding, and true system freedom, though its client ecosystem is looser. The author uses both in parallel, recommends Jellyfin for newcomers, and notes Jellyfin’s leadership turnover in 2026 as a reminder that open source requires ongoing community support.

Police Removed Prominent Scientists from the ADA Meeting. Researchers Respond

A CloudFront 403 error blocks access, stating the request could not be satisfied due to traffic or configuration issues; users are urged to retry later or contact the site owner, with troubleshooting guidance and a request ID included.

Fractl.art – a fractal generator with 8 octillion different patterns

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A24 Is Copyright Striking Backrooms Artwork Older Than the Movie

A24 faced backlash after copyright-striking Backrooms artwork created before the film. In a statement, A24 said Backrooms is part of a larger ecosystem and they do not claim ownership of the yellow wallpaper or related community works; they began reversing an automated claim on Redbubble and will reinstate the listing. The Backrooms originated as a 2019 4chan creepypasta and expanded through independent creators like Kane Parsons, whose 9-minute film popularized it. Creators warn this sets a dangerous precedent for internet culture when studios retroactively copyright community-created content.

The Visual 6502

Visual 6502 in JavaScript is an online HTML5-based 6502 simulator requiring substantial RAM. Controls: z to zoom in, x to zoom out, n to step; left-click drag to pan when zoomed. See the User Guide. Source code on GitHub (visual6502). Use the easy6502 online emulator/assembler and the mass:werk disassembler; for advanced features, visit the Advanced page.

What else do people draw on gradient.horse?

Six months after gradient.horse’s January 2026 launch, over 600,000 drawings have been created—more horses than in the wild. A vandalism-filter hides many clever non-horse images unless SHOW NON-HORSES is enabled. Recurring themes include skateboards and trampolines, snails, seahorses, memes, and love/philosophy texts, plus caterpillars/centipedes, dragons, dinosaurs, wheelchairs, mobility-upgraded riders, bikes, hearts, and other animals like elephants, cats, sheep, crabs, and pegasi. The post invites users to draw what’s missing and points to related links and signup.

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