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Show HN: Visual Database Schema Designer (Angular 21 and .NET 10)
Show HN: Visual Database Schema Designer (Angular 21 and .NET 10) Hi HN, OP here.<p>I built this because I was frustrated with the current state of DB design tools. They are usually either heavy enterprise desktop apps (like DataGrip/Workbench) or simple drawing tools that don't export usable code.<p>I wanted a "VS Code-like" experience in the browser: dark mode, strict typing, and instant visual feedback.<p>The tech stack is quite aggressive: - Frontend: Angular 21 (Latest). I'm using Signals exclusively for the graph state management to handle 100+ nodes without layout thrashing. - Backend: .NET 10 for DDL generation and schema validation.<p>Current features: - Visual Table/Column editor. - Drag & drop relationships (1:N handling). - Exports to PostgreSQL DDL and Entity Framework Core.<p>It's an MVP, so I'm looking for feedback on the graph interaction and the UI feel.<p>Does the "IDE-like" layout work for you for this kind of task?
Show HN: Opal Editor, free Obsidian alternative for markdown and site publishing
Show HN: Opal Editor, free Obsidian alternative for markdown and site publishing A fully featured markdown editor and publisher. Free, open-source and browser-first (no backend required). Built with modern technologies like React, TypeScript, Shadcn/UI, and Vite. (thoughtfully crafted, not vibe coded)
Show HN: Control Claude permissions using a cloud-based decision table UI
Show HN: Control Claude permissions using a cloud-based decision table UI We’ve been building visual rule engines (clear interfaces + API endpoints that help map input data to a large number of outcomes) for a while and had the fun idea lately to see what happens when we use our decision table UI with Claude’s PreToolUse hook.<p>The result is a surprisingly useful policy/gating layer– these tables let your team:<p>- Write multi-factor, exception-friendly policies (e.g. deny rm -rf / when --force; allow cleanup only in node_modules; ask on network calls like curl/wget; block kubectl delete or SQL DROP, each with a clear reason)<p>- Roll out policy changes instantly (mid-run, flip a risky operation from allow → ask; the next attempt across devs and agents is gated immediately– no git pull, agent restart, or coordination)<p>- Adopt lightweight governance that is somewhat agent agnostic and survives churn (MCP/skills/etc)- just add columns/rules as new tools and metadata show up<p>- Get a quick central utility to understand which tools are being used, which tools get blocked most often, and why
Show HN: Claude Code Scheduler
Show HN: Claude Code Scheduler I found myself frequently wanting to schedule tasks in Claude Code (both one-time and recurring) so I built a CC plugin to help with that.<p>To install: /plugin marketplace add jshchnz/claude-code-scheduler /plugin install scheduler@claude-code-scheduler<p>Then just tell Claude what you want (some examples):<p>Every Wednesday at 3am find dead code: unused functions, unreachable branches, commented-out code, and unused imports. List by file with line numbers.<p>Schedule a code review every weekday at 9am. Review commits from the last 24 hours, check for bugs, security issues, error handling gaps, and code that needs comments. Summarize with file:line references.
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