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A teammate opened a PR titled "fix hero heading on small screens." The diff added a media query. Mine, reviewing it, found four more already in that file — one per breakpoint, added over eighteen months by four different people, each one patching the width the last person didn't think of: .hero-heading { font-size : 3rem ; } @media ( max-width : 1200px ) { .hero-heading { font-size : 2.5rem ; } } @media ( max-width : 992px ) { .hero-heading { font-size : 2.25rem ; } } @media ( max-width : 768px ) { .hero-heading { font-size : 1.75rem ; } } @media ( max-width : 480px ) { .hero-heading { font-size : 1.5rem ; } } Five rules to make one number — the font size of one heading — track the width of the screen it's on. And it still didn't work everywhere: resize the window to 850px and the heading is stuck at the 992px value, a little too big for the space it actually has. Every gap between breakpoints is a size nobody chose, it's just whatever the nearest rule left behind. Here's the part that stings: none of this has been necessary since 2020. The fix that isn't a breakpoint at all clamp() takes three values — a minimum, a preferred value, and a maximum — and returns whichever one the situation calls for: .hero-heading { font-size : clamp ( 1.5rem , 1rem + 2vw , 3rem ); } Read it as a sentence: never smaller than 1.5rem, never bigger than 3rem, and in between, scale with the viewport. The five media queries above collapse into that one line — and unlike them, it doesn't have gaps. clamp() recalculates the size continuously, every pixel the viewport moves, so there's no "850px value" that got left behind. It's a formula, not a lookup table. The middle value is where the "preferred" size lives, and it's 1rem + 2vw — a fixed part plus a viewport-relative part — not just 4vw on its own. That's not decoration. It's the one part of this pattern worth getting right, because the shortcut version quietly breaks something. The version that looks fine and isn't The formula you'll see

React Router v8 was released on June 17, 2026, with minimal breaking changes and new baselines. Key updates include an ESM-only build and default middleware settings. React Router v6 and Remix v2 have reached End of Life. Developers should follow specific migration guidelines to update their applications, while some are considering alternatives like TanStack Router. By Daniel Curtis

I didn't want to write another "what's new in Next.js 16.3" post. Enough of those exist. I wanted to...

Can't believe I spent 2 weeks writing this. Last week, I gave a talk at a Cursor community event...

There is a small cluster of posts going around right now about auditing your LLM invoice, and about how cost calculators get the numbers wrong. I went to check mine and hit a problem before I got to the arithmetic: my pipeline doesn't produce an invoice, and the plumbing I built two months ago is the reason why. This project has a script, git_commit.py , that turns a staged git diff into a Conventional Commit message. It shells out to the Claude CLI. There is no ANTHROPIC_API_KEY anywhere in the project, on purpose — an early version used urllib against the API directly and broke immediately for anyone running on an OAuth session instead of a raw key, so every AI call in the repo goes through a claude -p subprocess instead. That decision is still right. It also means there is no API key, so there is no per-key usage dashboard, so there is no line item to audit. For several months this script has been making a model call on essentially every commit, and I have never once known what any of them cost. The call site throws the numbers away Here is the actual invocation, trimmed: raw = subprocess . check_output ( [ " claude " , " -p " , " --safe-mode " , SYSTEM + " \n\n " + diff ], text = True , timeout = 20 , env = _claude_subprocess_env (), ) subprocess.check_output returns stdout. With the CLI's default output format, stdout is the commit message string and nothing else. Every number I would want — tokens in, tokens out, dollars — is computed on the other side of that call and then discarded, because I asked for a string and a string is what I got. This is the part I want to flag for anyone wiring up a headless model call the same way. It isn't that the metering is missing. It's that the default output format is lossy in exactly the dimension you'd later want to audit, and you won't discover that by reading your own code, because your own code looks fine. It asks for text, it gets text. The fix is one flag: raw = subprocess . check_output ( [ " claude " , " -p " , " -

The tunnel comes up. wg show prints a recent handshake. The client has its address inside the tunnel. And not a single byte reaches the internet. Almost every guide answers this with "open UDP 51820 in the firewall". You already did that — it is why the handshake works at all. The problem is somewhere else, and UFW makes the distinction easy to miss: Entering a machine and traversing it are two different permissions. ufw allow 51820/udp lets packets arrive at the server. Your clients' traffic does not stop there — it goes through the box and out the public interface. That path lives in the FORWARD chain, which UFW denies by default and which no allow rule touches. The four things to check, in order 1. IP forwarding — and the file that overwrites the other file This is the one that costs hours, because the setting looks done. UFW loads its own sysctl file at startup, and it takes precedence over the system one. A value you carefully set in /etc/sysctl.conf can be silently overwritten on the next ufw enable . The right place is /etc/ufw/sysctl.conf : net / ipv4 / ip_forward = 1 net / ipv6 / conf / default / forwarding = 1 net / ipv6 / conf / all / forwarding = 1 Then check the effective value, not the file you just edited: sysctl net.ipv4.ip_forward 2. Forwarding, which is not the same as ingress Targeted, and the one to prefer: sudo ufw route allow in on wg0 out on eth0 Or globally, in /etc/default/ufw : DEFAULT_FORWARD_POLICY = "ACCEPT" The second opens forwarding for every interface. It is a good ten-second diagnostic and a poor permanent configuration. 3. NAT, which UFW never adds on its own Without it, packets leave carrying their tunnel address, which nothing on the internet knows how to answer. In /etc/ufw/before.rules , at the very top , before the *filter line: *nat :POSTROUTING ACCEPT [0:0] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE COMMIT Two classic mistakes here: putting this block after *filter (it is then ignored), and copying eth0 without chec

I spend a lot of time in the AI space -- reading papers, building things, talking to engineers who are actually shipping. And there is a gap between what the demos show and what production systems actually look like that nobody is being fully honest about. So here is my honest take on where things actually are. The Problem With How We Talk About AI Agents Everyone is calling everything an "agent" right now. A function that calls a tool? Agent. A chatbot with memory? Agent. A script with a loop? Agent. This dilution is not just semantic. It is causing real engineering mistakes. When you do not have a precise definition for what you are building, you end up over-engineering simple pipelines and under-engineering genuinely complex ones. I have seen teams spend weeks adding "agentic" orchestration to workflows that would have been fine as a single well-structured prompt. Here is the definition I keep coming back to: an agent is a system that has an objective, not just an instruction. It decides what to do next. It handles failure. It knows when it is done. Everything else is just a fancy function call. 🟢 If your system needs a human to tell it each step, it is not an agent. It is a chat interface. 🔵 If your system can recover from a failed tool call and try a different approach, you are getting somewhere. ✅ If your system can decompose a goal into subtasks and delegate them, that is the real thing. What Is Actually Happening in Production Right Now The honest picture from teams I follow and talk to: Most real agent deployments are narrow. They do one thing well. Customer support triage. Document extraction. Code review on a specific codebase. They are not general-purpose reasoning engines. They are purpose-built pipelines with some intelligence in the decision layer. The teams getting good results are not chasing the latest model release. They are obsessing over: ☑️ Tool design -- what can the agent actually call, and how clean is the interface ☑️ Failure handling -- wh

_Ran into an open-source project called PrivaMesh yesterday and decided to look under the hood since their architecture choice is wild. Basically, it is an iOS chat application that functions without a backend. No central infrastructure, no corporate servers, nothing. The onboarding flow requires absolutely no phone numbers, emails, or personal identifiers. There is no account registry database to hack, which completely eliminates the usual honeypots for data leaks. Instead of routing data through a standard server farm, this thing uses the Solana blockchain as a raw transport layer. Every encrypted payload is wrapped into a transaction and pushed directly to one-time destination addresses. The cryptography stack is actually solid: they combined X3DH handshakes with Double Ratchet for rolling keys and forced fixed-size padding so observers cannot guess the length of your text. The social graph stays fully hidden because the app constantly rotates delivery points and adds decoy traffic to mess with timing analysis. It is a pretty cool practical application of web3 state machines instead of the usual token speculation. Check the repo if you are into decentralized networking._

If you’ve ever tried to reconcile a night of sleep from an Oura Ring , a morning run from a Garmin watch, and active minutes from an Apple Watch , you know the "Dirty Data" struggle is real. Each platform has its own schema, its own definition of "active calories," and its own idiosyncratic export format. In the world of Data Engineering , this is a classic multi-source integration problem. But you don't need a massive Snowflake cluster to solve it. Today, we’re building a high-performance, serverless data pipeline to clean and normalize wearable data using DuckDB , dbt , and GitHub Actions . By leveraging a modern Serverless Data Pipeline and DuckDB's lightning-fast processing, we can turn a mess of CSVs into a structured Parquet -based personal data warehouse. The Architecture: From Chaos to Clarity Before we dive into the code, let’s look at how the data flows from your wearables to a clean, queryable state. graph TD A[Oura JSON] -->|Python Ingestion| D[(DuckDB Raw)] B[Garmin CSV] -->|Python Ingestion| D C[Apple Health XML] -->|Python Ingestion| D D --> E{dbt Models} E -->|Cleaning| F[stg_models] E -->|Normalization| G[int_health_metrics] G -->|Final Output| H[Gold Layer: Parquet Files] H --> I[Visualization / BI] subgraph GitHub Actions D E F G H end Prerequisites To follow along, you'll need: DuckDB : The "SQLite for OLAP" that makes local analytical processing insanely fast. dbt-duckdb : The adapter that lets dbt talk to DuckDB. GitHub Actions : Our free "orchestrator." Tech Stack : DuckDB, dbt, Python, Parquet. Step 1: The Ingestion Layer (Python + DuckDB) The first hurdle is getting disparate files (JSON, CSV, XML) into a unified storage format. DuckDB is magical here because it can query these files directly. We'll use a simple Python script to load these into a local .duckdb file. import duckdb def ingest_raw_data (): # Initialize the database con = duckdb . connect ( ' health_data.duckdb ' ) # Ingest Garmin CSV con . execute ( """ CREATE TABLE raw_garmin

For 30 straight days as a college student earning ¥100k/month, I posted to Instagram by hand, and then I burned out and stopped. Today the same job runs on a Claude Code autonomous environment, I touch nothing, and it holds up ¥1.2M/month in revenue. Except for the two hours when it quietly stopped: three consecutive launchd runs, zero pieces of content generated, last exit=0 every single time, and not one alert. The cause was a process that had already been killed, holding a lock file nobody would take away from it. Why this setup works From "doing the work" to "building the environment" The problem with updating social media by hand is that it burns willpower. No matter how motivated you are, sleep, health, and mood all fluctuate. During the period when I was laid off and my income went to zero, I had no mental slack for posting at all. The autonomous environment I spent six months building with Claude Code runs regardless of my emotional state. launchd calls a script, the script generates content with claude -p (MAX plan quota; paid APIs are off-limits), the output is queued for auto-posting, and it goes out to Instagram every day at 19:30. As long as this machinery keeps working, ¥1.2M/month in sales holds up without me lifting a finger. The mental model I want to hand you A lot of people think "automation = writing scripts," and that's only half right. A script is correct at the moment you write it. Given time, external dependencies break, processes die for reasons you didn't anticipate, and lock files turn into debris that blocks every future run. An autonomous environment that actually works is one that assumes breakage and carries a layer that repairs it. The lock story here is a textbook case. ~/dev/brand-404/sns/gen_feature.py is a script launched on a schedule by launchd that auto-generates Instagram feature articles. A single run takes a long time (up to three claude -p calls, plus image generation, adding up to tens of minutes), so it has a lock mechani

How to keep APIs secure, consistent, compliant, and manageable as your organization grows. I've...

Hace unos meses empecé a construir Utiligo , una colección de calculadoras en español: horas extras, IVA, aguinaldo, préstamos, IMC. La premisa técnica era simple y me la tomé en serio: cero dependencias de JavaScript en el navegador . Sin React, sin frameworks de UI, sin librerías de gráficos. Ni una. Esto es lo que aprendí construyéndolo. Por qué cero dependencias La mayoría de estas herramientas hacen aritmética. Sumar horas, aplicar un porcentaje, dividir un salario entre 30. Enviar 40 KB de framework al navegador para calcular salario / 30 / 8 es desproporcionado, y en América Latina —donde está mi audiencia— buena parte del tráfico llega por móvil con conexiones irregulares. El stack quedó así: Astro en modo output: 'static' , que genera HTML puro <script is:inline> con JavaScript de toda la vida para la interactividad Cloudflare Pages para servirlo El resultado: páginas que funcionan antes de que termine de cargar cualquier cosa. Lo que sí duele de esta decisión Sería deshonesto contarlo como si no tuviera costes. Los gráficos hay que dibujarlos a mano. El gráfico de pastel del presupuesto mensual es SVG generado con trigonometría: var end = start + pct * 2 * Math . PI ; var x1 = cx + r * Math . cos ( start ), y1 = cy + r * Math . sin ( start ); var x2 = cx + r * Math . cos ( end ), y2 = cy + r * Math . sin ( end ); var large = pct > 0.5 ? 1 : 0 ; svg += ' <path d="M ' + cx + ' , ' + cy + ' L ' + x1 + ' , ' + y1 + ' A ' + r + ' , ' + r + ' 0 ' + large + ' ,1 ' + x2 + ' , ' + y2 + ' Z"/> ' ; Con una librería serían tres líneas. Aquí son treinta y hay que entender el arco elíptico de SVG. ¿Vale la pena? Para un gráfico, sí. Para un dashboard entero, probablemente no. No hay reactividad. Cada oninput actualiza el DOM a mano. Funciona bien con diez campos; con cien sería insostenible. El generador de QR tuve que escribirlo. Codificación Reed-Solomon incluida. Fue el fin de semana más educativo del proyecto y el que menos recomendaría repetir. El bug que me enseñó

I built HermitMQ entirely in Go. The main feature is ditching heavy wrappers like JSON in favor of a custom 29 byte binary protocol. Additionally, data transmission over the network uses a direct file to socket copy mechanism. I will go into detail about the architecture, data storage approaches, benchmark numbers, and show how it is implemented in code. The full source code for the HermitMQ project is available on GitHub: https://github.com/ekhidirov/hermitmq The problem with standard brokers and the cost of serialization When the message counter exceeds hundreds of thousands per second, the main problem for a Go developer is the garbage collector. If every message is parsed via standard JSON, the application starts allocating a massive number of small objects in memory. The GC wakes up too frequently, eating up CPU time and causing network latency spikes. To avoid triggering the garbage collector at every turn, I completely abandoned standard serialization libraries. Every message is packed into a custom header of exactly 29 bytes. In code, the message structure looks extremely simple: type Message struct { Magic byte Timestamp uint64 Offset uint64 KeySize uint32 PayloadSize uint32 RecordCount uint32 Key [] byte Payload [] byte } The first byte is a magic number for version checking and instantly discarding bad packets. Next come 8 bytes for the timestamp in nanoseconds and 8 bytes for the offset, which the broker fills in itself to maintain message order. Then come the key and payload sizes, 4 bytes each. Finally, 4 bytes are reserved for the record count to support batching. The broker reads the stream using the binary package and reuses buffers via sync.Pool. As a result, under standard loads, we achieve practically zero memory allocation. Being honest about allocations and plans for zero serialization To be completely honest: although the broker is incredibly frugal under standard loads, a memory management compromise still remains. An absolute victory over al

🚀 Technical Briefing: This tutorial is part of our deep-dive series on Agentic Workflows at Gate of AI . For the full technical breakdown, interactive code sandbox, and the native Arabic translation, visit the original article here . An evaluation-first guide to deciding whether GPT-4o mini fine-tuning is justified for a narrowly defined language task. This article uses the available research context rather than assuming unverified API capabilities, model snapshots, pricing, or deployment features. GPT-4o Mini Fine-Tuning: Start With Evidence, Not an Upload Fine-tuning is often presented as the next step after prompt engineering, but the available evidence does not support treating it as an automatic upgrade. Before preparing a dataset or committing to a training workflow, define the task, establish a baseline, select measures that reflect the real objective, and decide what result would justify changing the system. The verified research context is especially relevant for text transformation. A TREC 2024 Plain Language Adaptation of Biomedical Abstracts study evaluated prompt engineering, a two-AI-agent approach, and fine-tuning with OpenAI GPT-4o and GPT-4o mini models. Its objective was to simplify biomedical abstracts for a K-8 audience, approximately 13- to 14-year-old students. The study used qualitative assessments for simplicity, accuracy, completeness, and brevity on 5-point Likert scales, together with readability measures including Flesch-Kincaid grade level and the SMOG Index. Its results are a useful warning against simplistic claims. Prompt engineering with GPT-4o mini and the two-agent approach showed stronger qualitative performance in that evaluation. Fine-tuned models excelled in accuracy and completeness, but were less simple. The paper also reported that GPT-4o mini prompt engineering outperformed the evaluated iterative two-agent and GPT-4o fine-tuning approaches on its qualitative results. That is not a universal verdict on fine-tuning. It is ev

A CI step that says dotnet tool exec Some.Tool looks isolated, but it is not fully reproducible. Without a version, the command can resolve the latest package from the configured feeds. Machine-level NuGet settings can also change which feeds participate. I use .NET 10 dotnet tool exec with an exact @version and an explicit feed policy when I want one-shot tooling without a global install or a committed tool manifest. The command is stable from the .NET 10.0.100 SDK onward. Microsoft describes it as a temporary invocation: the package is downloaded to the NuGet cache, executed, and left out of PATH . That is convenient for CI, but temporary installation does not automatically mean deterministic selection. Why .NET 10 dotnet tool exec can drift The official command reference documents three useful selection modes: Some.Tool can resolve the latest version when no local manifest supplies one. Some.Tool@2.* stays on a major version, but still floats within that range. Some.Tool@2.4.1 requests one exact package version. For CI, I prefer the third form. A new tool release should arrive through a reviewed change, not because the next clean runner happened to restore later. The feed is a separate input. --add-source adds another source, and NuGet can query feeds in parallel. If the same package and version exists on more than one feed, the fastest response can win. That may be acceptable for interactive experimentation. It is a poor default for a build gate. .NET 10 is currently an active LTS channel . I still pin the SDK used by CI as well, because a package pin controls the tool package, not the CLI that resolves and launches it. Pin the version and feed together For a repository policy, I give dotnet tool exec a checked-in NuGet.Config . This sample uses a generated local feed, so it needs no credentials or external package call: <?xml version="1.0" encoding="utf-8"?> <configuration> <config> <add key= "globalPackagesFolder" value= "./artifacts/global-packages" /> </conf

Si sabes Python pero el frontend te frena, NiceGUI es una de las mejores noticias de los últimos años: te permite construir aplicaciones web completas —con botones, formularios, gráficos y navegación— usando solo Python. ¿Qué es NiceGUI? Es un framework construido sobre FastAPI (backend) y Quasar/Vue (frontend). Tú escribes Python; NiceGUI genera la interfaz en el navegador y mantiene sincronizado el estado por ti. No necesitas HTML, CSS ni JavaScript para empezar. Lo simple que es Una app con un botón que muestra un mensaje son literalmente cuatro líneas: from nicegui import ui ui . button ( ' Saludar ' , on_click = lambda : ui . notify ( ' ¡Hola! ' )) ui . run () La jerarquía de la interfaz se expresa con context managers , que reflejan cómo se anidan los elementos: with ui . card (): ui . label ( ' Iniciar sesión ' ). classes ( ' text-xl font-bold ' ) usuario = ui . input ( ' Usuario ' ) clave = ui . input ( ' Clave ' , password = True ) ui . button ( ' Entrar ' , on_click = lambda : entrar ( usuario . value , clave . value )) Añadir estado reactivo, formularios, tablas o rutas ( @ui.page('/panel') ) es igual de directo. ¿Para qué es ideal? MVPs y prototipos: validar una idea en días, no semanas. Dashboards internos y paneles de datos. Herramientas internas para tu equipo, sin montar un frontend aparte. Demos de modelos de IA o scripts que necesitan una interfaz. ¿Cuándo NO es la mejor opción? NiceGUI renderiza en el cliente, así que para sitios donde el SEO del contenido es crítico (un blog, una landing pública que debe posicionar) conviene complementarlo con buenas meta etiquetas y datos estructurados, o valorar renderizado en servidor. Para aplicaciones, dashboards y herramientas internas es una elección excelente y muy productiva. Rendimiento y despliegue Una app NiceGUI se despliega como cualquier app de FastAPI/Uvicorn, normalmente detrás de nginx con systemd. Sirve los estáticos desde nginx y usa ui.run(show=False) en producción para no abrir un navegador

I built Suzi Chat to bring back the nostalgic feel of late-90s/early-2000s browser chat rooms. Key Features: Create and customize your own public or private chat rooms instantly from the browser. Built-in multiplayer casual board games (Chess, Checkers, Gomoku). No complicated setup—straightforward web-based access. Built using a NestJS backend and running on a dedicated Linux VPS. Live Platform: https://suzichat.com Looking for feedback from other developers on the UI layout, room creation flow, and multiplayer lobby stability.

Introduction I did something stupid. I built a superhero-themed Nuxt app, connected it to an Anthropic model through Amazon Bedrock , and gave it a tool that deletes files from my computer. In fact, if I wasn't careful, it could have deleted all my files! The first time I tried it, I didn't use any sort of approval mechanism. And as you expected it just deleted things. Then I looked into how my coding agent works, and I learned about tool approvals. I learned that AI SDK 7 has a tool approval at the model-call level. It works by pausing for an approval, showing an approval window, and then deleting it. I then put Kiro CLI behind the same interface using Agent Client Protocol (ACP). Watch the full video on YouTube . Prerequisites You need: Node.js 22 or later. AI SDK 7 requires Node.js 22 and uses ECMAScript modules (ESM). npm 11 or another package manager that works with Nuxt 4. AWS credentials available through the standard provider chain. Access to an Amazon Bedrock model in your AWS Region. The AWS CLI if you want to list the inference profiles available to your account. An authenticated Kiro CLI installation for the optional ACP section. Step 1: Create the Nuxt app Create the project and install the versions used in the recorded demo: npx nuxi@latest init nuxt-agent-approval cd nuxt-agent-approval npm install \ nuxt@4.5.2 \ vue@3.5.41 \ ai@7.0.66 \ @ai-sdk/vue@4.0.66 \ @ai-sdk/amazon-bedrock@5.0.57 \ @aws-sdk/credential-providers@3.1111.0 \ @nuxt/ui@4.10.0 \ zod@4.4.3 npm install -D @iconify-json/lucide@1.2.123 Register Nuxt UI and expose the Amazon Bedrock settings through server-side runtime config: // nuxt.config.ts export default defineNuxtConfig ({ modules : [ ' @nuxt/ui ' ], css : [ ' ~/assets/css/main.css ' ], runtimeConfig : { awsRegion : process . env . AWS_REGION ?? ' us-west-2 ' , bedrockModelId : process . env . NUXT_BEDROCK_MODEL_ID } }) Add the two Nuxt UI imports: /* app/assets/css/main.css */ @import "tailwindcss" ; @import "@nuxt/ui" ; You can c

Clear the Lineup Submission The Bug AI applications can fail silently — producing wrong outputs, degraded performance, or unexpected behaviors without explicit errors. In my case, the issue was SQL drift: queries executed successfully but returned incomplete or unstable results due to unsafe wildcard usage (SELECT *). This silent failure propagated downstream, degrading model accuracy without obvious alerts. The Fix I introduced an agentic validation and inspection layer into the pipeline using LangGraph, StatesGraph, MCP, and A2A. Inspection Layer: Deterministic checks (SQL linters, schema validators). Validation Layer: Agentic reasoning about query safety. MCP Integration: Standardized access to profilers and monitoring APIs. A2A Collaboration: Agents exchanged context to enforce compliance. This combination allowed the system to detect unsafe queries and route them for human review before deployment. PR Link Here’s the merged PR where the fix was implemented: Continental-Thaligai Repository – Merged PRs https://github.com/NikhilRaman12/Continental-Thaligai/pulse#opened-pull-requests Code Snippet python from langgraph import Graph from statesgraph import State from mcp import MCPClient class SQLInspection(State): def run(self, query): if "SELECT" in query and "*" in query: return {"risk": 0.7, "message": "Wildcard SELECT may cause drift"} return {"risk": 0.1, "message": "Query safe"} graph = Graph() graph.add_state("sql_inspection", SQLInspection()) graph.connect("sql_inspection", "human_review", condition=lambda r: r["risk"] > 0.5) result = graph.run("SELECT * FROM transactions") print(result) Diff Example: diff SELECT * FROM transactions SELECT transaction_id, amount, date FROM transactions This change eliminated silent drift in query results and improved reliability in downstream AI pipelines. Outcome Silent SQL drift eliminated. Improved accuracy in downstream AI models. Added regression tests to prevent recurrence. Strengthened CI/CD pipeline with agentic saf

At what point did you start to think you were an engineer? An engineer. What a lofty,...