Restructure repository: organize tools by purpose, create what search tool

- Move single-file tools to tools/ organized by category (security, forensics, data, etc.)
- Move multi-file projects to projects/ (go-tools, puzzlebox, timesketch, rust-tools)
- Move system scripts to scripts/ (proxy, display, setup, windows)
- Organize config files in config/ (shell, visidata, applications)
- Move experimental tools to archive/experimental
- Create 'what' fuzzy search tool with progressive enhancement (ollama->fzf->grep)
- Add initial metadata database for intelligent tool discovery
- Preserve git history using 'git mv' commands

projects/rust-tools/uniq2.rs

@@ -0,0 +1,36 @@
+use std::collections::HashSet;
+use std::hash::{Hash, Hasher};
+use std::collections::hash_map::DefaultHasher;
+
+struct HashOnlySet {
+    set: HashSet<u64>,
+}
+
+impl HashOnlySet {
+    fn new() -> HashOnlySet {
+        HashOnlySet { set: HashSet::new() }
+    }
+
+    fn insert<T: Hash>(&mut self, item: &T) -> bool {
+        let hash = Self::hash_item(item);
+        self.set.insert(hash)
+    }
+
+    fn contains<T: Hash>(&self, item: &T) -> bool {
+        let hash = Self::hash_item(item);
+        self.set.contains(&hash)
+    }
+
+    fn hash_item<T: Hash>(item: &T) -> u64 {
+        let mut hasher = DefaultHasher::new();
+        item.hash(&mut hasher);
+        hasher.finish()
+    }
+}
+
+fn main() {
+    let mut set = HashOnlySet::new();
+    set.insert(&"Hello, world!");
+    println!("Contains 'Hello, world!': {}", set.contains(&"Hello, world!"));
+    println!("Contains 'Goodbye, world!': {}", set.contains(&"Goodbye, world!"));
+}