feat: add blogwatcher skill

skills/blogwatcher/SKILL.md

@@ -0,0 +1,46 @@
+---
+name: blogwatcher
+description: Monitor blogs and RSS/Atom feeds for updates using the blogwatcher CLI.
+homepage: https://github.com/Hyaxia/blogwatcher
+metadata: {"clawdis":{"emoji":"📰","requires":{"bins":["blogwatcher"]},"install":[{"id":"go","kind":"go","module":"github.com/Hyaxia/blogwatcher/cmd/blogwatcher@latest","bins":["blogwatcher"],"label":"Install blogwatcher (go)"}]}}
+---
+
+# blogwatcher
+
+Track blog and RSS/Atom feed updates with the `blogwatcher` CLI.
+
+Install
+- Go: `go install github.com/Hyaxia/blogwatcher/cmd/blogwatcher@latest`
+
+Quick start
+- `blogwatcher --help`
+
+Common commands
+- Add a blog: `blogwatcher add "My Blog" https://example.com`
+- List blogs: `blogwatcher blogs`
+- Scan for updates: `blogwatcher scan`
+- List articles: `blogwatcher articles`
+- Mark an article read: `blogwatcher read 1`
+- Mark all articles read: `blogwatcher read-all`
+- Remove a blog: `blogwatcher remove "My Blog"`
+
+Example output
+```
+$ blogwatcher blogs
+Tracked blogs (1):
+
+  xkcd
+    URL: https://xkcd.com
+```
+```
+$ blogwatcher scan
+Scanning 1 blog(s)...
+
+  xkcd
+    Source: RSS | Found: 4 | New: 4
+
+Found 4 new article(s) total!
+```
+
+Notes
+- Use `blogwatcher <command> --help` to discover flags and options.