AI Summarized Hacker News

Front-page articles summarized hourly.

Agentic Patterns

Agentic Patterns outlines a universal architecture for frontier agentic systems and argues models converge due to physics—finite context, tool protocols, safety, and complex tasks. It defines three seam categories: domain-context substrate (MCP server), personal AI runtime, and a multi-agent shell; patterns vary by seam. It then presents eight postulates—guidelines on persistent instruction files (CLAUDE.md), external safety, context budgeting, MCP tooling, shared-state coordination, task decomposition, cost tracking, and incremental complexity. It also covers roles, reading order, and production-readiness guidance.

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Tidy PSU – PD-64 C64 PSU Brings USB PD to Commodore 64

Side Project’s Lab releases the PD-64 C64 PSU, a compact USB PD-powered replacement for the Commodore 64 brick. It uses a USB PD wall adapter to deliver 12V DC, steps down to 5V DC at 2A, and via a 500 kHz transformer generates galvanically isolated 9V AC at 50/60 Hz for the C64. The unit is small, with a rear AC-frequency switch, and includes fuses, short-circuit, undervoltage, overvoltage, and thermal protections. GitHub confirms 5V 2A and true 9V AC 1A; USB PD adapter sold separately. Schematics and 3D files available.

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How Shamir's Secret Sharing Works

Shamir's Secret Sharing splits a secret into n shares with a threshold k: any k shares recover, fewer reveal nothing. It uses a polynomial of degree k-1 over a finite field; the secret is the value at zero, and each share is a point on the polynomial. Two shares fix a line; three fix a parabola; in general k points determine the polynomial. Practically, fewer than k shares reveal no information. Ente's Legacy Kit employs this as recovery layer so cards can be revoked and lost cards aren’t permanent; recovery is server-mediated and does not expose the secret itself.

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Show HN: OpenBrief – Local-first video downloader/summarizer

OpenBrief turns video and audio into readable transcripts and grounded summaries on your desktop. It imports media (local files or links), transcribes on‑device, and generates blog‑style, timestamped briefings. Users can chat against the transcript or summary, and listen via text‑to‑speech. It runs as a private, open‑source Tauri desktop app (plus a Next.js web app) built with pnpm/Turborepo. It supports multiple ASR/LMM backends (Whisper, Qwen3‑ASR; GPT/Claude/Gemini; local Gemma), and aims to expand formats and voice cloning in future roadmaps. Licensed AGPL-3.0.

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Canada losing top talent as workers head to the U.S.

TD Economics warns Canada is quietly losing highly skilled workers, entrepreneurs, and STEM graduates to the U.S.—a "silent brain drain" from better pay, opportunity, and visas. The drivers: high Canadian personal tax rates and a business tax system that hampers growth; weak venture capital, lack of scale, and regulatory burden limit productivity. Canada needs stronger competitiveness, investment, and conditions for domestic growth to keep talent, as some move to lower-tax states like Texas and Florida.

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Riscrithm – An intuitive RISC-V assembler and optimizer coded in Go

Riscrithm is a lightweight, high-level macro-assembly dialect that compiles to readable RISC-V assembly. It bridges high-level readability with bare-metal control. Features include a CLI compiler, macro definitions, indentation-based scoping, labels, raw blocks, and rich syntax for variables, registers, memory (stack/heap), and arithmetic. It supports conditional branching mapped to beq/bne, loops via labels, and a two-pass compiler with an optional -o optimize pass (dead-code elimination, identity-math elimination, strength reduction). Output is clean, ready-to-use .s assembly; roadmap adds modules, better error handling, and guard clauses.

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Microsoft Copilot Cowork Exfiltrates Files

Microsoft Copilot Cowork is vulnerable to indirect prompt injection via poisoned skills, enabling exfiltration of files stored in SharePoint or OneDrive without user approval. By manipulating a Cowork skill, an attacker can cause the agent to post a Teams message that includes pre-authenticated download links; when the active user opens the message, those links are retrieved and the attacker downloads the files. The risk stems from Copilot Cowork's read access across Microsoft Graph and actions like sending messages that don't require human approval. Mitigations: block downloads (SharePoint policy) or use sensitivity labels. Attack is model-agnostic; scheduled tasks increase risk.

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Ferrari Luce, Maranello's first ever electric car

Ferrari’s first all‑electric, the Luce, is a four‑motor, 1,035bhp five‑seat hatchback with 0–62mph in 2.5s, 192mph, and ~330 miles of range from a 122kWh, 800V pack. Weighing 2,260kg, it uses 75% recycled aluminium and a new chassis/VCU system with torque vectoring and 200Hz updates. It features regenerative braking, carbon‑ceramic brakes, and a lavish interior designed with LoveFrom and Jonathan Ive. Ferrari emphasizes usability and light as philosophy; Luce sits on a dedicated EV platform with 60+ new patents, not a mid‑engined ICE swap.

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Show HN: Write your BPF programs in Go, not C

gobee lets you write BPF programs in Go by transpiling a subset of Go to BPF C and generating typed Go bindings for userspace. It reuses clang’s BPF backend (not a replacement for clang), so you still compile with clang and load via libbpf. It targets tracepoints, kprobes, XDP, and more, with ~200 typed Go stubs and verifier errors annotated with Go source positions. Cross-arch support (amd64/arm64) and kernel-version gating via bpfvet are included. Quickstart: go install gobee, gobee translate, then build with clang.

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