Chenlin's personal site — technical writing, notes, photography and work.https://duchenlin.top/enhttps://duchenlin.top/en/notes/story-of-my-orb/https://duchenlin.top/en/notes/story-of-my-orb/From copying an existing orb outright to watching Siri's frame by frame. There was design this fine in an era with no AI at all. And I only ever wanted to hand the work off — today's models can't carry that. Whether to learn the fundamentals: I've known the answer all along.Sun, 30 Aug 2026 00:00:00 GMT随笔思考AIhttps://duchenlin.top/en/posts/orb-nine-revisions/https://duchenlin.top/en/posts/orb-nine-revisions/A stronger visual model, a deeper skill, the industry's finest prototype in hand — none of it changes one thing: narration is lossy, and the model can only reconstruct the part I actually said. Nine revisions didn't buy me a prettier orb. They bought me a spec that didn't exist on day one.Fri, 28 Aug 2026 00:00:00 GMT设计方法论Agenthttps://duchenlin.top/en/posts/agent-routing/https://duchenlin.top/en/posts/agent-routing/Which agent should take a task. Scoring is the easy part; the hard part is telling “never tried” apart from “fails every time”, and stopping a broken backend from winning on stale statistics.Mon, 24 Aug 2026 00:00:00 GMTAgent架构Pythonhttps://duchenlin.top/en/posts/voice-shell-gate/https://duchenlin.top/en/posts/voice-shell-gate/Wiring a voice assistant to a terminal is the largest risk surface in the project. Off by default, shape-checked, allowlist matched per token, verified speaker, confirmation every time — plus one truthiness bug the tests caught.Wed, 19 Aug 2026 00:00:00 GMT安全Python语音https://duchenlin.top/en/posts/astro-personal-site/https://duchenlin.top/en/posts/astro-personal-site/The whole record from nothing to live: why a static site, how the content is organised, and the specific trade-offs made for load speed inside China.Sun, 16 Aug 2026 00:00:00 GMTAstro前端建站https://duchenlin.top/en/notes/owning-a-domain/https://duchenlin.top/en/notes/owning-a-domain/A thought that may be out of date: having an address of your own matters more than having an account anywhere.Sat, 15 Aug 2026 00:00:00 GMT随想https://duchenlin.top/en/posts/evidence-levels/https://duchenlin.top/en/posts/evidence-levels/It costs a coding agent almost nothing to report “done”. So the verification levels went into the project constitution: low-grade evidence may not be passed off as high-grade, and no implementer approves their own implementation.Thu, 13 Aug 2026 00:00:00 GMT方法论测试Agenthttps://duchenlin.top/en/posts/binary-search-boundaries/https://duchenlin.top/en/posts/binary-search-boundaries/After all these years I still cannot remember how to take mid, or whether the loop condition is < or <=. Memorising the template loses to holding on to one invariant.Mon, 10 Aug 2026 00:00:00 GMT算法笔记https://duchenlin.top/en/posts/fts5-chinese/https://duchenlin.top/en/posts/fts5-chinese/unicode61 treats a whole run of Han characters as one token. The way around it is not a different tokeniser but indexing derived tokens — and here is why the query side has to drop single characters.Thu, 06 Aug 2026 00:00:00 GMTSQLite全文检索Python