DEV Community • 2026-08-02 03:38

"Plan 9 — ระบบปฏิบัติการที่โลกลืม แต่เปลี่ยนวิธีคิดเรื่อง OS ไปตลอดกาล"

📅 เขียนเมื่อ: กรกฎาคม 2026 ⚠️ อ้างอิงจากเอกสารต้นฉบับของ Bell Labs และบันทึกของผู้พัฒนา ถ้าผมถามว่า "ระบบปฏิบัติการที่เจ๋งที่สุดในโลกคืออะไร" — คุณคงตอบ Linux, macOS, หรือ Windows แต่ถ้าถาม Ken Thompson และ Dennis Ritchie — สองคนที่สร้าง Unix ขึ้นมา — พวกเขาจะตอบว่า Plan 9 Plan 9 คือระบบปฏิบัติการที่ Bell Labs สร้างขึ้นในช่วงปลายยุค 80 ถึงต้นยุค 90 โดยทีมเดียวกับที่สร้าง Unix แต่มันไม่ใช่แ...

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DEV Community • 2026-08-02 03:38

My MCP Server Fixed a CWD-Relative Path Bug Once. A Second Hardcoded Relative Path Sat Two Functions Below It, Unfixed.

Last week I fixed a bug in this repo's MCP server where .env was being loaded from a bare relative path — ".env" instead of something resolved against the file's own location. The failure mode was that an MCP client launches server.py as a subprocess with just a command and args, no cwd, so wherever the process happens to start determines whether the credentials load at all. I patched load_env() t...

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DEV Community • 2026-08-02 03:31

I built CleanSlate, an open-source coding agent for the IDE, CLI, and SDK

CleanSlate is an open-source platform for running coding agents across your local machine and the cloud. Today, it works through an IDE, CLI, and SDK. Agents can understand a codebase, make changes, run commands, browse the web, and verify their work. We are now building longer-running autonomous cloud agents that can continue working without keeping your machine active. CleanSlate supports mul...

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Hacker News • 2026-08-02 03:28

Show HN: I get 25 deep researched ideas with one single prompt

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DEV Community • 2026-08-02 03:25

Building Fluentic Style: Making CSS Debugging Work Across Next.js Server and Client

This is part of my Building Fluentic Style series, where I’m writing down the design decisions, tradeoffs, and small surprises from building Fluentic Style. It is one thing to make a styling library feel good in a client-side app. It is another thing to make it feel good in Next.js App Router. In a simple SPA-style development setup, most of the styling loop lives in one place: component r...

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Hacker News: Front Page • 2026-08-02 03:19

The teenage hitmen recruited to kill across Europe

Article URL: https://www.bbc.com/news/articles/czrjyevmv61o Comments URL: https://news.ycombinator.com/item?id=49140737 Points: 18 # Comments: 2

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DEV Community • 2026-08-02 03:15

Architecting Mainline-Friendly Products

Mainline-friendly products are designed so their board support lives in upstream Linux, U-Boot, and standard build systems instead of a vendor fork. The decision is architectural, not aspirational: it is made when you choose the SoC, design the add-on connectors, and write the device tree — not when the product is already shipping. This article gives the strategic case, the product design rules t...

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DEV Community • 2026-08-02 03:12

Pixel Chef AI: A Memory Kitchen That Learns Your Taste

This is a submission for Frontend Challenge - Comfort Food Edition, Perfect Landing 🍳 Pixel Chef AI — A Memory Kitchen That Learns Your Taste What I Built Pixel Chef AI is an interactive AI cooking companion built around a simple idea: Food is not only about recipes. It is about memories, habits, emotions, and personal taste. Instead of being a traditional recipe generator...

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DEV Community • 2026-08-02 03:12

Confident Is Not Correct: Three Signs That Claude Is Guessing

The answer arrives clean, well-formatted, and certain. You run it. The config flag doesn't exist. Nothing in the response told you the difference between the parts it was sure about and the parts it filled in. The syntax was right. The explanation was reasonable. The flag had a sensible name and a clear purpose. It just wasn't real. This is a calibration problem, not a trust problem. "Don't trus...

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Hacker News: Front Page • 2026-08-02 03:12

MkLinux and the pimped-out Apple Workgroup Server 9150

Article URL: http://oldvcr.blogspot.com/2026/08/mklinux-and-pimped-out-apple-workgroup.html Comments URL: https://news.ycombinator.com/item?id=49140702 Points: 8 # Comments: 1

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Hacker News: Front Page • 2026-08-02 03:10

Linux desktop market share has hit over 10% in North America

Article URL: https://old.reddit.com/r/linux/comments/1vcpk8i/linux_desktop_market_share_has_hit_over_10_in/ Comments URL: https://news.ycombinator.com/item?id=49140696 Points: 17 # Comments: 0

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DEV Community • 2026-08-02 03:06

I told one AI to demolish the handoff prompt I wrote for another AI. It found a test that passes even when it's empty

I'm building an app with Claude Code right now. The setup is a little unusual. One "commander" session writes the instructions, and separate "worker" sessions implement them in parallel. The commander never touches the keyboard itself. Its whole job is to turn "what to do next" into a handoff prompt that a worker can read and just run with. And that handoff prompt is quietly the scariest thing i...

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Database Views in Your ERD: Read-Only Entities, Not Fake Tables
DEV Community • 2026-08-02 03:02

Database Views in Your ERD: Read-Only Entities, Not Fake Tables

Disclosure: I build Schemity, a desktop ERD tool - this post is from our blog and uses it for the examples. TL;DR: Database views carry real responsibilities - reporting layers, security boundaries, API surfaces - but ERD tools either leave them out entirely (DBML has no view support despite requests since 2022) or draw them as if they were ordinary tables. Schemity displays views and materializ...

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SSMS Database Diagrams: Your ERD Is Trapped Inside the Database It Documents
DEV Community • 2026-08-02 03:01

SSMS Database Diagrams: Your ERD Is Trapped Inside the Database It Documents

Disclosure: I build Schemity, a desktop ERD tool - this post is from our blog and uses it for the examples. TL;DR: SSMS keeps every database diagram as a binary blob in the sysdiagrams system table of the database it describes, so it cannot be saved to a file, versioned in Git, or opened without a server connection - and the feature itself was removed in SSMS 18.0 and restored in 18.1 only after...

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DEV Community • 2026-08-02 03:00

My Favorite Constant in Retrieval Is 60. Nobody Tunes It. That's the Point.

Reciprocal rank fusion merges two ranked lists — say, BM25 results and vector-search results over your chargeback cases — into one. It has exactly one parameter, k. And the answer is just... 60. Not tuned per dataset. Not learned. Sixty, from the original paper, works essentially everywhere. The entire algorithm: def rrf(rankings: list[list[str]], k: int = 60) -> list[tuple[str, float]]: ...

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Hacker News • 2026-08-02 02:59

Show HN: FirstEmployee.ai – Start a Business

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Hacker News: Front Page • 2026-08-02 02:57

Plug-in solar is coming. Plug-in batteries should follow

Article URL: https://www.regen.co.uk/insights/plug-in-solar-is-coming-plug-in-batteries-should-follow Comments URL: https://news.ycombinator.com/item?id=49140633 Points: 7 # Comments: 0

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Hacker News: Front Page • 2026-08-02 02:51

Deep-sea vehicles spot 'alien' sharks deep beneath the waves in the Pacific

Article URL: https://www.science.org/content/article/deep-sea-vehicles-spot-alien-sharks-deep-beneath-waves-pacific# Comments URL: https://news.ycombinator.com/item?id=49140599 Points: 7 # Comments: 0

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DEV Community • 2026-08-02 02:48

Designing a Practical MiniMax H3 Video Workflow: Text, Frames, and Omni References

Building an AI video interface looks simple in a demo: add a prompt box, an upload button, and a Generate button. The real product work starts when those inputs mean different things. While building MiniMaxH3.app, an independent third-party studio around the MiniMax H3 open-weight video model, we found that text-to-video, first/last frame, and multi-reference generation should not be treated as ...

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DEV Community • 2026-08-02 02:42

Context window growth is the silent failure mode in agentic pipelines

Context window management is the invisible cost in every multi-step agent pipeline. I see this pattern across production consulting work. An agent that works cleanly in testing — ten steps, coherent reasoning, correct output — starts degrading six weeks after ship. No errors. No crashes. Just drift. Outputs get shorter. Reasoning steps that used to show clear logic start reading like vague summar...

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