chore: Add CLAUDE.md and Claude Code project settings

.claude/settings.json

@@ -0,0 +1,8 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(uv sync)",
+      "Bash(uv run pelican *)"
+    ]
+  }
+}

CLAUDE.md

@@ -0,0 +1,28 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Commands
+
+| Task | Command |
+|---|---|
+| Install dependencies | `uv sync` |
+| Build (dev) | `uv run pelican content` |
+| Build, serve, and watch | `uv run pelican --listen` |
+| Production build | `uv run pelican content -s publishconf.py` |
+
+There is no Makefile or tasks.py — all tasks run via `uv run`.
+
+## Configuration split
+
+`pelicanconf.py` is the development config: `SITEURL = ""` and `RELATIVE_URLS = True`. `publishconf.py` imports from it and overrides for production: absolute `SITEURL`, Atom feeds enabled, and `DELETE_OUTPUT_DIRECTORY = True`.
+
+When editing site-wide settings, be careful which config file needs to change — production-only settings (feeds, absolute URLs) belong in `publishconf.py`; everything else in `pelicanconf.py`.
+
+## Theme
+
+The [Attila](https://github.com/arulrajnet/attila) theme is installed as a Python package via `pyproject.toml` (pinned to a specific git commit). Its path is resolved at runtime with `attila.get_path()` in `pelicanconf.py`. To update the theme, change the commit SHA in `pyproject.toml` and run `uv sync`.
+
+## CI
+
+The GitHub Actions workflow (`.github/workflows/build.yml`) only verifies the build succeeds — it does not deploy the site.