docs: add project guidelines and commit conventions

- Add AGENTS.md with tech stack, project structure, and code styles
- Add dev/docs/dashboard.md with frontend-specific guidelines
- Include conventional commit types with examples

Co-authored-by: Ona <no-reply@ona.com>

AGENTS.md

@@ -0,0 +1,27 @@
+# Project tech stack
+frontend: react, shadcn, tailwindcss
+backend: convex
+
+# Project structure
+This project uses npm workspaces.
+- `packages/convex` - convex functions and models
+- `packages/web` - frontend dashboard
+- `packages/path` - path utils
+
+# General Guidelines
+
+- For frontend dashboard guidelines, refer to dev/docs/dashboard.md
+- Always use bun for package management and running npm scripts.
+- When commiting, follow conventional commits: `[type]: msg` and clarify in commit body if necessary. keep your commit header to <= 50 characters.
+  - `feat:` for new features
+  - `fix:` for bug fixes  
+  - `docs:` for documentation
+  - `refactor:` for code restructuring
+  - `style:` for formatting changes
+  - `test:` for adding tests
+  - `ci:` for CI/CD pipeline changes
+  - `build:` for build system or dependency changes
+
+# Code styles
+
+- file names should always be kebab-case except in convex code, in which case try to use single word file names.