init web: ffuf, dir enum & subdomains enum

Signed-off-by: Hadi <hadi@example.com>

src/content/notes/web/directory-discovery.md

@@ -0,0 +1,38 @@
+---
+title: "Directory Discovery"
+description: "Techniques and tools for discovering hidden directories and files on web servers."
+tags: ["web", "enumeration", "discovery", "directory"]
+publishDate: 2026-06-01
+---
+
+## FFUF
+
+See also [FFUF](/notes/web/ffuf) for fuzzing-based directory discovery.
+
+## Robots.txt
+
+```bash
+curl -s $url/robots.txt
+```
+
+## Sitemap.xml
+
+```bash
+curl -s $url/sitemap.xml
+```
+
+## Dirb
+
+```bash
+dirb $url
+```
+
+## Spider - Katana
+
+A spider is a tool that crawls a website and collects information about its
+structure and content. It can be used to find hidden directories, files, and
+parameters.
+
+```bash
+katana -c 15 -p 15 -u $url > output
+```