US Jet Down Over Iran! Pilot Saved!

The East India Company in Japan

Key Points

• EIC operated in Japan from 1613 to 1623, then withdrew.
• Japan’s 1673 refusal reflected tighter Tokugawa controls and an official Portuguese-related pretext.
• ‘Sakoku’ arose via European interpretation; scholars argue ‘kaikin’ better reflects Japan’s selective engagement.

Demonstrating Real Time AV2 Decoding on Consumer Laptops

Key Points

• Real-time AV2 decoding demonstrated in both VLC (native) and Chrome/YouTube (web) on consumer laptops.
• Web demo achieved 1080p/24 fps using libavm for both encoding and decoding in a custom Chrome build.
• Focus was on feasibility; further optimization and production-grade support are planned.

GabeN Is Shitting Yacht Money into Flatpak and You're Still Arguing Init Systems

Key Points

• OpenMW contributor argues Flatpak is a better fit than AppImage for the project.
• AppImage is said to duplicate dependencies and risk outdated libraries (e.g., SDL2).
• AppImage requires extra tooling (appimagetool, linuxdeploy) that doesn’t align with existing build systems.

Software never had a soul

Key Points

• The author argues the personal web is thriving due to improved tools.
• He distinguishes utilitarian software tools from products meant for personal expression.
• He cites blogroll.org as evidence of active personal websites.

Modern Generic SVGA driver for Windows 3.1

Key Points

• Adds 8/16/24/32-bit True-Colour support to Windows 3.1 via VBE
• Works on many VBE-compliant GPUs; known issue with GeForce 1050 GTX
• Includes Windows 98 support and a 256-colour-capable grabber for windowed DOS

Lisette a little language inspired by Rust that compiles to Go

Key Points

• Lisette compiles to Go and imports Go packages via go: prefix.
• Features include ADTs, pattern matching, Hindley–Milner typing, and immutability by default with no nil.
• Compiler diagnostics enforce safety: exhaustive matches, explicit error handling, and visibility/mutability rules.

U.S. Rescues Officer from Downed Fighter Jet in Iran

Key Points

• U.S. rescued an officer from a downed fighter jet in Iran, per Donald Trump.
• Israel struck Iran’s largest petrochemical industrial complex on Saturday.
• Images show regional effects: strikes, damage, protests, and displacement across multiple cities.

Aegis – open-source FPGA silicon

Key Points

• Fully open FPGA fabric and toolchain with path to silicon via open PDKs and wafer.space
• Terra 1 device targets GF180MCU with ~2,880 LUT4s, 128 BRAMs, 64 DSPs, 224 I/Os, 4 SerDes, 2 clock tiles
• Open tapeout flow outputs GDS2 using Yosys and OpenROAD; supports GF180MCU and Sky130

Scientists Figured Out How Eels Reproduce (2022)

Key Points

• Eels were directly tracked to the Sargasso Sea, confirming their spawning grounds.
• Eel life cycle includes larval drift to Europe, long freshwater growth, and silver-stage return migration.
• European eel populations have fallen by over 95% since the 1980s, elevating conservation urgency.

Elizabeth I's Manuscript of Pierre Boaistuau's Histoires Prodigieuses (1559)

Key Points

• Boaistuau’s 1559 manuscript sought but failed to gain Elizabeth I’s endorsement, appearing in Paris the next year.
• Histoires prodigieuses blends sources and imagery, influenced by di Varthema’s travels and Breu’s woodcuts, with anti-Catholic symbolism noted by scholars.
• Case studies across Europe illustrate period beliefs about causes of “monstrous” births, notably maternal imagination.

Dynamics of (Not) Being Perceived: Grief and Relief After Leaving Social Media

Key Points

• Leaving social media is framed as generative freedom enabling personal and social responsibility.
• Platform omnipresence has shifted digital engagement from optional tools to persistent infrastructure.
• Virality rewards rapid moral signaling, influencing conflict dynamics in online movements.

Unverified: What Practitioners Post About OCR, Agents, and Tables

Key Points

• Demos often fail in production; table layout retention and template maintenance are recurring pain points.
• OCR tool performance is fragmented; benchmark leaders vary by document type and setup.
• Handwriting is still hard; hybrid and VLM-informed pipelines may be necessary for specific workloads.

Show HN: OsintRadar – Curated directory for osint tools

Key Points

• Curated OSINT directory organized by workflow and specialty.
• Covers social media, domain, media, and identity analysis techniques.
• Community-driven with options to browse categories and submit resources.

Talk like caveman

Key Points

• Cuts ~75% of tokens from Claude responses while keeping technical accuracy.
• Easy installation via npx or Claude Code plugin marketplace commands.
• Concise rules remove filler but keep code, exact technical terms, and error messages intact.

Ask HN: Is there any interest in a native Qt/C++ Discord client?

Key Points

• Native C++/Qt 6 Discord client “kind” targets Windows, macOS, and Linux without Electron.
• Performance is driven by instant UI load and a SQLite-backed cache with background REST validation.
• Voice and Nitro are deferred; core networking, caching, permissions, and rendering features are already implemented.

Ask HN: Vibe Coding over Easter?

Key Points

• The post asks how developers manage mobile coding via messaging apps during Easter and set boundaries.
• It critiques hype around easy, gold-rush-style building with AI agents and creator monetization.
• It claims AI output often needs human cleanup, suggesting a niche for cleanup services.

The threat is comfortable drift toward not understanding what you're doing

Key Points

• Two students deliver similar publishable results, but one relies extensively on an AI agent.
• Standard academic metrics equate their outputs, overlooking differences in understanding.
• Institutional incentives prioritize paper production over deep training outcomes.

Costco sued for seeking refunds on tariffs customers paid

Key Points

• Suit alleges Costco passed tariff costs to consumers and now seeks government refunds, creating potential double recovery.
• Costco plans to apply refunds to lower future prices rather than reimburse past purchasers, per March 2026 call.
• A second, earlier suit was filed in Illinois; amounts and affected goods to be determined at trial.

Hightouch (YC S19) Is Hiring

Key Points

• Full health premiums for US-based staff; 80% dependent coverage and life insurance included.
• $50 monthly connectivity stipend provided to all employees.
• $150 commuter benefits apply to office-based and qualifying remote workers; Hightouch is hiring.

Ubuntu now requires more RAM than Windows 11

Key Points

• Ubuntu 26.04 LTS sets a 6GB RAM minimum and updates CPU/storage guidance.
• The increase reflects modern multitasking workloads rather than core OS bloat.
• Installs below 6GB remain possible but with slower performance.

Sad Story of My Google Workspace Account Suspension

Key Points

• Sole Google Workspace super-admin account suspended after overseas access.
• Email and forwards halted; OAuth-linked services (e.g., Pipedrive) inaccessible.
• DNS verification completed; recovery still indicates a 30-day suspension window.

Shared mutable state in Rust (2022)

Key Points

• Use Arc for shared ownership and Mutex for safe mutation.
• MutexGuard from lock enforces exclusive access and prevents data races.
• For IO resources, prefer actors or connection pools (r2d2, bb8).

Friendica – A Decentralized Social Network

Key Points

• Built-in support for ActivityPub, OStatus, and diaspora* enables broad federation.
• Granular privacy and messaging features, including access lists and private groups.
• Runs on PHP/MySQL, works on shared hosts, and supports plugins/themes.

Apple Rich Text Fundamentals

Key Points

• NSAttributedString models rich text as a string plus attribute ranges defined by NSRange.
• The API supports reading, updating, converting, and drawing attributed content.
• Rich text is a system-level data structure, not only a text editor feature.

Iguanaworks has closed down. USB Infrared hardware open source maker

Key Points

• Iguanaworks has closed; hardware sales have ended, but docs and GPL software remain.
• USB IR Transceiver supported LIRC/WinLIRC on Linux/Windows, up to four transmit channels.
• Some models have on-board receivers; Socket Receive requires a wired receiver for IR input.

Someone at BrowserStack Is Leaking Users' Email Address

Key Points

• Apollo ultimately told the author the email came from BrowserStack via a contributor network.
• The unique email was used only for BrowserStack, yet received an unsolicited message shortly after signup.
• BrowserStack did not respond to the author’s repeated inquiries.

Common drug tests lead to tens of thousands wrongful arrests a year

Key Points

• Colorado bans arrests based solely on colorimetric field drug test results.
• Studies show high false positive rates, with some settings reporting up to 91% errors.
• Manufacturers caution tests are presumptive and require lab confirmation; reliable alternatives are costly.

Eight years of wanting, three months of building with AI

Key Points

• syntaqlite was built in ~250 hours over three months and released on GitHub.
• Exact SQL parsing was achieved by adapting SQLite’s source due to the lack of a formal spec or stable parser API.
• AI coding agents were pivotal in enabling the project and will be evaluated with evidence.

Puzzlehunts

Key Points

• Team Providence won the MIT Mystery Hunt and will write next year’s event.
• Puzzle hunts involve decoding multi-format puzzles to produce concise answers.
• Example and resources provided: 2015 MUMS puzzle, plus writing guides by Evan Chen and David Wilson.

Japanese, French and Omani Vessels Cross Strait of Hormuz

Key Points

• Iran permits non-U.S./non-Israeli-linked ships to transit the Strait of Hormuz, enabling selective crossings.
• CMA CGM and Oman Shipping Management vessels passed; AIS signals were adjusted or turned off during transit.
• Mitsui O.S.K. Lines’ Sohar LNG became the first Japan-linked and first LNG carrier to cross since the conflict began.

SPF/PC v4 for MS-DOS, FreeDOS, x86

Key Points

• Legacy SPF/PC v4 released as abandonware with included REXX.
• Compatible with MS-DOS, FreeDOS, Windows; works in DOSBox.
• Provided strictly as-is with no support; usage tip for panel commands (number + Control).

Artemis II crew see first glimpse of far side of Moon

Key Points

• Artemis II crew viewed the Moon’s far side for the first time.
• Crew photo captured the Orientale basin; NASA says it’s a first for human eyes seeing the entire basin.
• As of 23:00 BST Saturday, Orion was over 180,000 miles from Earth, per NASA’s dashboard.

Banray.eu: Raising awareness of the terrible idea that is always-on AI glasses

Key Points

• Investigation alleges footage is sent to Sama in Kenya for human review, including sensitive scenes.
• Some AI processing is unavoidable when using voice features; data may be scrutinized under Meta’s terms.
• GDPR issues are raised over transfers to Kenya and lack of clarity from Ireland’s DPC.

EPA Official in Charge of Methane Regs Wrote Oil Industry Argument Against Them

Key Points

• PDF metadata links Aaron Szabo to a 2022 AXPC letter opposing EPA methane controls.
• Szabo now leads EPA rule revisions and has delayed compliance deadlines.
• ProPublica cites internal records showing Szabo sought industry input on rule language.

Baby's Second Garbage Collector

Key Points

• Revisits and validates the baseline “Baby’s First Garbage Collector.”
• Details how a precise, stop-the-world collector with an object census works.
• Identifies failures when objects escape into primitive regions, motivating GC evolution.

StackOverflow: Retiring the Beta Site

Key Points

• Stack Overflow will retire the beta site and remove access in the coming weeks.
• The unified posting experience and most beta design elements will not move to the main site.
• Beta content will be adapted into the traditional Q&A format with care.

Microsoft terms say Copilot is for entertainment purposes only, not serious use

Key Points

• Microsoft’s Copilot terms advise “entertainment-only” use and warn against relying on the tool for important advice.
• Similar disclaimers from xAI and others highlight LLM limitations, including hallucinations and inaccuracies.
• Reports tie AI-assisted actions to AWS outages and Amazon website incidents, underscoring the need for oversight.

Phone-free bars and restaurants on the rise across the U.S.

Key Points

• Phone-free policies and incentives are spreading in U.S. hospitality venues.
• Data show high daily phone use; younger generations report higher rates of intentional unplugging.
• Chains and independents (e.g., Delilah’s, Chick-fil-A, Antagonist) are adopting varied enforcement and incentive methods.

A tail-call interpreter in (nightly) Rust

Key Points

• Nightly Rust’s become enables a tail-call interpreter that reportedly outperforms prior Rust and ARM64 versions.
• Uxn’s architecture and a baseline Rust dispatch loop are detailed, including const-generic instruction variants.
• Assembly token threading demonstrates performance-focused dispatch by keeping state in registers and jumping to next ops.

Nanocode: The best Claude Code that $200 can buy in pure JAX on TPUs

Key Points

• Reproduce 1.3B and 477M nanocode models on TPUs for ~$200 and ~$34, respectively.
• Tokenizer gains from adding The Stack-V2 at a 1:5 ratio significantly improve code tokenization.
• Built in JAX, nanocode adapts Karpathy’s nanochat and is optimized for TPUs with scripts for data and tokenizer training.

Perfmon – Consolidate your favorite CLI monitoring tools into a single TUI

Key Points

• Consolidates outputs from tools like top, vmstat, netstat into a single TUI with tabs and sparklines.
• Highly configurable via TOML, with per-tab commands and refresh intervals; supports Linux and macOS.
• Multiple installation paths (binaries, go install, source) and developer-friendly Makefile workflow.

Tracing Goroutines in Realtime with eBPF

Key Points

• xgotop uses eBPF to trace goroutine state transitions and allocations in near real time.
• This first part covers design, Go runtime internals, and a bpftrace PoC; a standalone implementation follows in part two.
• Goroutine lifecycle details, including the g struct and key states, are explained to guide effective tracing.

Why Over-Engineering Happens

Key Points

• Start with the simplest viable architecture to validate value (e.g., Levels.fyi’s Forms/Sheets).
• Over-engineering increases cost and slows delivery without solving present needs.
• Choose tools and patterns for fit and scale today; add complexity only as demand warrants.

Codex is switching to API pricing based usage for all users

Key Points

• Codex pricing moves to API token-based credits for ChatGPT Business and new Enterprise plans as of April 2, 2026.
• Credits are billed per 1M tokens across input, cached input, and output, with model-specific rates provided.
• Legacy rate card remains for existing Plus, Pro, and Enterprise/Edu until migration.

Computational Physics (2nd Edition)

Key Points

• Free downloadable resources: sample chapters, programs, data files, exercises, and figures.
• Materials may be used for instruction, learning, and personal reading, with permission to print.
• Links provided to the table of contents and the book’s Amazon page; feedback contact available.

With one million displaced, Lebanon turns to digital wallets for aid

Key Points

• Aid is increasingly delivered via digital wallets and P2P transfers rather than traditional channels.
• Remittances to Lebanon total $6–7B annually; informal inflows are about 70% of crisis-period inflows (UNDP).
• Whish Money and platforms like PayPal, Zelle, and Venmo are central to rapid, direct aid distribution.

Just 'English with Hanzi'

Key Points

• Modern Chinese has shifted from parataxis toward hypotaxis, increasing explicit logical connectors.
• Two historical waves drove the change: missionary translations and Japanese Wasei‑kango.
• Adopted vocabulary imported Western abstract categories into Chinese.

The Melanesian: Dark-skinned people with blonde hair region of Oceania

Key Points

• Blond hair in Melanesians evolved independently and is linked to a distinct TYRP1 allele.
• Melanesia spans Vanuatu, Solomon Islands, Fiji, and Papua New Guinea within Oceania.
• Island geography and linguistic divisions contribute to high genetic and cultural diversity.

From birds to brains: My path to the fusiform face area (2024)

Key Points

• Early research showed diving bradycardia in cormorants is largely a fear response to forced submersion.
• Acoustic heart rate transmitters enabled measurements during voluntary, naturalistic dives.
• Fieldwork in Norway, including ptarmigan studies on Karlsoy, shaped Kanwisher’s scientific development.

Reaffirming our commitment to child safety in the face of EuropeanUnion inaction

Key Points

• EU ePrivacy derogation enabling CSAM detection expired on April 3, creating legal uncertainty.
• Google, Meta, Microsoft, and Snap will continue voluntary CSAM detection on their services.
• The companies urge EU institutions to swiftly agree on an interim and long-term regulatory framework.

The Enigma of Gertrude Stein

Key Points

• Stein’s distinctive style and repetition underpin both her influence and her perceived difficulty.
• Her reception contrasts central influence with ambivalence and comparisons to male modernists.
• Francesca Wade’s biography frames Stein’s life and legacy as “Life” and “Afterlife.”

Program analysis using random interpretation (2005) [pdf]

Key Points

• Introduces “random interpretation” combining random testing and abstract interpretation.
• Provides algorithms and analyses for linear arithmetic and uninterpreted functions.
• Includes error probability, fixed-point, complexity analyses, and a deterministic alternative (Strong Equivalence DAG).

Gender Equality and Work

Key Points

• OECD average gender wage gap is 11.5% in 2023, down from 14% in 2010.
• OECD average paid parental leave is 65 weeks, with distinct earmarked and shareable components.
• Finland, Hungary, and the Slovak Republic exceed 170 weeks of paid parental leave; OECD offers a dashboard for comparisons.

LibreOffice – Let's put an end to the speculation

Key Points

• TDF says past branding and contracting decisions violated non-profit law.
• Authorities’ audit confirmed issues must be fixed to protect non-profit status.
• Parallel organization TDC’s rollout intensified governance tensions.

Running Google Gemma 4 Locally with LM Studio's New Headless CLI and Claude Code

Key Points

• Gemma 4 26B-A4B delivers near-31B performance locally with MoE efficiency.
• LM Studio 0.4.0 enables headless, CLI-based local LLM serving via llmster and lms.
• On a 48 GB Mac, 26B-A4B runs ~51 tok/s with 256K context and vision support.

Bacteria found in the human intestine capable of improving muscle strength

Key Points

• Roseburia—especially R. inulinivorans—associates with stronger muscles and better fitness in humans.
• Mouse supplementation with human Roseburia strains increased grip strength and fast-twitch muscle fibers.
• Findings support a gut–muscle axis and hint at probiotic applications for healthy aging.

Gemma 4 on iPhone

Key Points

• Official Gemma 4 support for on-device AI on iPhone
• Agent Skills, Thinking Mode, and multimodal features included
• Offline Mobile Actions powered by FuntionGemma 270m

LÖVE: 2D Game Framework for Lua

Key Points

• Unstable development occurs on the main branch; releases are tagged with binaries and have dedicated branches.
• Nightly builds are available via GitHub CI, an Ubuntu PPA, and Arch Linux’s AUR (love-git).
• LLM/generative AI-produced contributions are not accepted by the project.

Microsoft Hasn't Had a Coherent GUI Strategy Since Petzold

Key Points

• Past clarity: Petzold’s 1988 guide defined a coherent Win16/Win32 UI model.
• 1990s complexity: MFC, OLE, COM, and ActiveX fragmented the developer story.
• Longhorn reset: 2003 vision (WinFS/Indigo/Avalon) scrapped in 2004; C++ favored over managed code.

Show HN: Enter an Instagram/TikTok handle, get a data-backed price for collab

Key Points

• Accepts Instagram, TikTok, or YouTube handles to generate data-backed rate estimates.
• Offers brand-specific fit scoring by adding a brand website.
• Displays timeline metrics (Sep 2024–Mar 2026) and references Reel, Image, and Carousel formats.

Music for Programming

Key Points

• Catalog lists episodes 01–77 with titles and links.
• RSS feed and Mastodon verification are available.
• Recurring contributors (e.g., Datassette) appear across multiple episodes.

DNS is Simple. DNS is Hard

Key Points

• DNS changes are global, uncoordinated, and converge via independent caches.
• The 2016 Dyn outage shows how DNS failures cascade to major platforms.
• Race conditions and uncoordinated automation in DNS management can propagate inconsistent state.

UK intelligence censored report on global warming and homeland security

Key Points

• JIC flags biodiversity loss and ecosystem collapse as core UK security threats.
• The public report is brief, released after FOI; The Times claims a longer internal version with broader warnings.
• Multiple ecosystems may hit tipping points by 2030–2050, including the Amazon and Boreal forests.

The underrated benefits of always having oatmeal at lunch

Key Points

• Oatmeal lunch is positioned as healthy, inexpensive, and vegan-friendly.
• A fixed routine reduces decisions and saves lunchtime; texture and ratios can be refined.
• Variety is achieved via a structured mix of oat types, fruits, seeds/nuts, extras, and liquids.

The Free Market Lie: Why Switzerland Has 25 Gbit Internet and America Doesn't

Key Points

• Switzerland uses a shared, neutral fiber infrastructure enabling multiple providers and up to 25 Gbit/s symmetric service.
• The U.S. and Germany commonly offer lower, often shared speeds with limited provider choice due to differing infrastructure policies.
• Germany’s focus on infrastructure competition has produced costly overbuild rather than efficient duct sharing.

Qwen-3.6-Plus is the first model to break 1T tokens processed in a day

Key Points

• Qwen 3.6 Plus processed ~1.4 trillion tokens in a day on OpenRouter.
• First model on OpenRouter to exceed 1 trillion tokens in a single day.
• OpenRouter says it’s the strongest full-day performance by a new model this year.

Musician says AI company is cloning her music, filing claims against her

Key Points

• Timeless Sounds IR allegedly uploaded AI-generated versions of Campbell’s songs via Vydia.
• Vydia then filed copyright claims against Campbell’s YouTube videos, she says.
• Campbell reports losing YouTube monetization while Vydia collects revenue from her videos.

A brief history of instant coffee

Key Points

• Boiling ruins coffee flavor; early concentrates were syrups with compromised taste.
• Civil War logistics spurred portable coffee solutions but early concentrates were unpopular.
• David Strang’s 1889 Dry Hot-Air method enabled the first viable instant coffee powder.

Introducing GEN-1 [video]

Key Points

• Claims 99% task success vs. 64% for previous models
• About 3x faster task completion than prior state of the art
• Limited public details; description text is truncated

Iran threatens 'complete and utter annihilation' of OpenAI's $30B Stargate

Key Points

• IRGC threatens retaliation, including destruction of U.S. and Israeli facilities.
• Video highlights a purported $30B ‘Stargate’ AI datacenter in Abu Dhabi as a target.
• Reports cite prior disruptions to some AWS data centers from rocket strikes.

In Japan, the robot isn't coming for your job; it's filling the one nobody wants

Key Points

• Japan targets 30% of the global physical AI market by 2040 (METI).
• Labor shortages from demographic decline are the main driver of automation.
• Japan’s edge is in components; faster AI–hardware integration is needed to match full‑stack rivals.

OpenJDK: Panama

Key Points

• Project Panama targets safe, efficient foreign function calls and memory access from Java.
• Key features are tracked by JEP-424 (FFM API) and JEP-426 (Vector API).
• Active work resides in separate repositories for foreign support, vector support, and jextract; the legacy repo is deprecated.

Wavelets on Graphs via Spectral Graph Theory

Key Points

• Defines T_g^t = g(tŁ) to scale signals on graphs via the Laplacian spectrum.
• Ensures invertibility under an admissibility condition on the kernel g.
• Provides a fast Chebyshev-based algorithm that avoids Laplacian diagonalization and shows cross-domain applications.

Italian TV Copyright-Strikes Nvidia over Nvidia's Own DLSS 5 Footage

Key Points

• La7 used Nvidia’s DLSS 5 trailer footage and filed copyright strikes.
• Nvidia’s official DLSS 5 announcement video on YouTube was taken down.
• Strikes targeted multiple YouTube uploads alleged to contain the same footage.

Show HN: TermHub – Open-source terminal control gateway built for AI Agents

Key Points

• Works across macOS and Windows terminals with platform-specific input support.
• Offers both a CLI and SDK for session control, command/keystroke sending, and output delta capture.
• Installs via npm, Homebrew (macOS), or GitHub Releases archives.

Peter Thiel's big bet on solar-powered cow collars

Key Points

• Halter raised $220M Series E at a $2B valuation led by Founders Fund.
• Solar-powered collars enable virtual fencing, herd movement, and health/fertility monitoring.
• Deployed on 1M+ cattle across 2,000+ farms in NZ, Australia, and 22 U.S. states; competing products include Merck’s Vence.

OpenAI's fall from grace as investors race to Anthropic

Key Points

• OpenAI shares are hard to sell on secondary markets; Anthropic demand is surging.
• Valuation gap drives perceived better risk‑reward for Anthropic.
• OpenAI warns secondary transfers may violate restrictions and risk invalidating equity.

Spath and Splan

Key Points

• Spath provides semantic addresses for code symbols, reducing reliance on filesystem operations.
• The concept of “narrative hygiene” aims to streamline AI-agent collaboration by focusing on ideal narratives.
• Spath’s grammar is open sourced and designed for language-specific dialects across multiple ecosystems.

Recall – local multimodal semantic search for your files

Key Points

• Local multimodal search with Gemini Embedding 2 and ChromaDB using cosine similarity.
• Animated setup wizard and Python API streamline onboarding, embedding, and querying.
• Raycast extension offers visual and headless search experiences on the desktop.

Show HN: I built a tiny LLM to demystify how language models work

Key Points

• 8.7M‑parameter, fish‑persona LLM with a simple 6‑layer transformer architecture
• 60K synthetic conversations across 60 topics; dataset and model hosted on HuggingFace
• Trains in ~5 minutes on a Colab T4 GPU; full code for data, tokenizer, training, and inference

Show HN: Mdarena – Benchmark your Claude.md against your own PRs

Key Points

• Benchmarks CLAUDE.md on real PR-derived tasks with test-based grading
• History-free git snapshots prevent future-commit leakage during evaluation
• Reported case: ~27% improvement with existing CLAUDE.md vs. baseline

Apex Protocol – An open MCP-based standard for AI agent trading

Key Points

• Open MCP-based standard connecting AI agents directly to brokers with realtime and safety features
• 19 mandatory tools plus realtime resources; universal instrument IDs across brokers
• 167-check conformance suite and multi-language reference implementations (TypeScript, Rust, Go, Java)

Endian wars and anti-portability: this again?

Key Points

• Linux 6.7 dropped Itanium; Alpha and Itanium lack current commercial viability.
• Multiple ‘legacy’ architectures (MIPS, SPARC, PowerPC, 68000) retain practical value or use.
• Real-hardware testing on an Intel 586 exposed a Linux kernel bug hidden in emulation.

Show HN: Modo – I built an open-source alternative to Kiro, Cursor, and Windsurf

Key Points

• Spec-Driven Development with persistent, executable tasks in .modo/specs/.
• Steering Files and Agent Hooks enforce rules and automate workflows.
• Autonomy controls, parallel sessions, Subagents, and Powers expand AI-assisted development.

Copilot is 'for entertainment purposes only', per Microsoft's terms of use

Key Points

• Microsoft’s Copilot terms label it “for entertainment purposes only” and caution against reliance for important advice.
• Microsoft says this is “legacy language” and plans to update the terms to reflect current use.
• OpenAI and xAI also warn users not to treat AI outputs as definitive truth, indicating an industry-wide practice.

Show HN: Gemma Gem – AI model embedded in a browser – no API keys, no cloud

Key Points

• Runs Google’s Gemma 4 on-device via WebGPU in Chrome—no cloud or API keys.
• Modular architecture: offscreen document (model), service worker (routing/JS/screenshots), content script (UI/DOM tools).
• Setup with pnpm and developer mode; detailed debugging via Chrome’s inspect tools.

Sheets Spreadsheets in Your Terminal

Key Points

• Terminal spreadsheet with vim-like TUI and CLI for CSV operations
• Installation via Go or prebuilt binaries; MIT license
• Merged PR adds Nix flake packaging and devshell support

LLMs can't justify their answers–this CLI forces them to

Key Points

• Prototype-backed tests show DataLoader resolves GraphQL N+1 with p95 latency within 12% of REST.
• Adversarial review revises payload reduction estimates to ~15–25% due to existing field filtering.
• Recommendation: use GraphQL for new endpoints and solve caching before broader migration.

Stamp It All Programs Must Report Their Version – Michael Stapelberg

Key Points

• Lack of version visibility impeded incident response in a real-world outage.
• Three steps—Stamp it, Plumb it, Report it—ensure build info is embedded, propagated, and exposed.
• i3’s version reporting serves as a concrete model for effective practices.

Scientists mapped all the nerves of the clitoris for the first time

Key Points

• Synchrotron-based imaging revealed extensive dorsal nerve branching into the clitoral glans.
• Findings may guide reconstructive and nerve-sparing genital surgeries, including for FGM survivors.
• Results are a small-sample preprint (two postmortem donors) pending peer review.

We replaced Node.js with Bun for 5x throughput

Key Points

• ~5x throughput gain through phased optimizations and a runtime switch from Node.js to Bun
• Replacing SQLite with a composite-key map yielded ~2.2x throughput and latency improvements
• Bun’s HTTP stack and profiling tools enabled further ~2x gains and hotspot identification

An open-source 240-antenna array to bounce signals off the Moon

Key Points

• Open-source phased-array project provides modular C-band SDR tiles and arrays for EME, radio astronomy, and RF experimentation.
• Scalable architecture ranges from a 4-antenna tile to 72- and 240-antenna arrays with high gain, EIRP, and 60° beam steering.
• Operation requires appropriate amateur radio licensing, and radar functionality is intentionally excluded due to export controls.

Case study: recovery of a corrupted 12 TB multi-device pool

Key Points

• btrfs check --repair infinite loop rotated backup_roots past rollback points
• 14 custom btrfs-progs-based tools restored the pool with ~7.2 MB loss
• Nine targeted upstream improvements are proposed, plus a small patch to alloc_reserved_tree_block

The Reason VO₂ Max Declines with Age

Key Points

• VO₂ max decline with age is driven increasingly by peripheral, not just cardiac, limitations.
• Endurance training builds capillaries; HIIT and SIT drive time-efficient mitochondrial gains.
• Consistency and progressive overload are essential to sustain adaptations and mitigate aging-related declines.

The 1987 game "The Last Ninja" was 40 kilobytes

Key Points

• Developed by System 3 and released in 1987
• Isometric, detailed graphics on the Commodore 64
• Iconic soundtrack by Ben Daglish and Anthony Lees at ~40 KB total size

Rendering arbitrary-scale emojis using the Slug algorithm

Key Points

• Slug is now publicly implementable and integrated into HarfBuzz GPU.
• Slug’s fragment-shader coverage avoids scaling artifacts common to bitmap and SDF methods.
• Sample code demonstrates HarfBuzz GPU usage and GPU data upload for single-color glyphs.

Winners of the 2026 Kokuyo Design Awards

Key Points

• Grand Prix: “Before Note” by Hiroki Kannari (user-assembled pre-notebook)
• Merit awards: “Gram,” “Notebooks Identified by Edges,” and “Gradience Diary”
• Finalists include packaging and pen concepts, with potential commercialization by KOKUYO

Signals, the push-pull based algorithm

Key Points

• Signals automatically propagate changes to dependents using a push-based update model.
• A minimal JavaScript implementation shows how Signals manage value and subscriptions.
• Signals are contextualized within Reactive Programming history and modern frameworks.

Show HN: Real-time AI (audio/video in, voice out) on an M3 Pro with Gemma E2B

Key Points

• Fully local multimodal assistant using Gemma 4 E2B and Kokoro TTS
• ~2.5–3.0s end-to-end latency on Apple M3 Pro with streaming UX
• Open-source (Apache 2.0) with simple setup and auto model download