feat: add fullscreen TUI and project updates

- New TUI screens: Main Menu, Compile, Run, REPL, AI Generator, AI Settings, Help
- AI configuration persisted in ~/.config/cljnim/config.json
- Added illwill dependency for terminal UI
- Updated experiments, examples, docs, and core modules

src/macros.nim

@@ -46,7 +46,6 @@ proc expandSyntaxQuote*(form: CljVal): CljVal =
       if head.symName == "unquote-splicing":
         raise newException(CatchableError, "unquote-splicing can only be used inside a collection")
     # Process each element
-    var result: seq[CljVal] = @[]
     var parts: seq[CljVal] = @[]
     for item in form.items:
       if item.kind == ckList and item.items.len == 2 and
@@ -118,22 +117,22 @@ proc macroexpand*(form: CljVal): CljVal =
 proc threadingMacro(args: seq[CljVal], reverse: bool): CljVal =
   if args.len < 2:
     raise newException(CatchableError, "Threading macro requires at least 2 arguments")
-  var result = args[0]
+  var acc = args[0]
   for i in 1..<args.len:
     let step = args[i]
     if step.kind == ckList and step.items.len > 0:
       var newItems = step.items
       if reverse:
-        newItems.add(result)
+        newItems.add(acc)
       else:
-        newItems.insert(result, 1)
-      result = cljList(newItems)
+        newItems.insert(acc, 1)
+      acc = cljList(newItems)
     elif step.kind == ckSymbol:
       # (-> x f) => (f x)
-      result = cljList(@[step, result])
+      acc = cljList(@[step, acc])
     else:
       raise newException(CatchableError, "Threading macro requires list or symbol forms")
-  result
+  acc
 
 proc initBuiltinMacros*() =
   # ->
@@ -324,17 +323,17 @@ proc initBuiltinMacros*() =
       raise newException(CatchableError, "as-> requires at least 3 arguments")
     let expr = args[0]
     let name = args[1]
-    var result = expr
+    var acc = expr
     for i in 2..<args.len:
-      result = cljList(@[cljSymbol("let"), cljVector(@[name, result]), args[i]])
-    result
+      acc = cljList(@[cljSymbol("let"), cljVector(@[name, acc]), args[i]])
+    acc
   )
 
   # some->
   defineMacro("some->", proc(args: seq[CljVal]): CljVal =
     if args.len < 2:
       raise newException(CatchableError, "some-> requires at least 2 arguments")
-    var result = args[0]
+    var acc = args[0]
     for i in 1..<args.len:
       let step = args[i]
       let gs = cljSymbol(gensymName("st_"))
@@ -347,17 +346,17 @@ proc initBuiltinMacros*() =
         threaded = cljList(@[step, gs])
       else:
         threaded = step
-      result = cljList(@[cljSymbol("let"), cljVector(@[gs, result]),
+      acc = cljList(@[cljSymbol("let"), cljVector(@[gs, acc]),
         cljList(@[cljSymbol("if"), cljList(@[cljSymbol("nil?"), gs]),
           cljNil(), threaded])])
-    result
+    acc
   )
 
   # some->>
   defineMacro("some->>", proc(args: seq[CljVal]): CljVal =
     if args.len < 2:
       raise newException(CatchableError, "some->> requires at least 2 arguments")
-    var result = args[0]
+    var acc = args[0]
     for i in 1..<args.len:
       let step = args[i]
       let gs = cljSymbol(gensymName("stg_"))
@@ -370,10 +369,10 @@ proc initBuiltinMacros*() =
         threaded = cljList(@[step, gs])
       else:
         threaded = step
-      result = cljList(@[cljSymbol("let"), cljVector(@[gs, result]),
+      acc = cljList(@[cljSymbol("let"), cljVector(@[gs, acc]),
         cljList(@[cljSymbol("if"), cljList(@[cljSymbol("nil?"), gs]),
           cljNil(), threaded])])
-    result
+    acc
   )
 
   # for (simplified — single binding only)
@@ -458,7 +457,6 @@ proc initBuiltinMacros*() =
     let body = args[1..^1]
     if binding.kind != ckVector or binding.items.len != 2:
       raise newException(CatchableError, "with-open requires [name init]")
-    let sym = binding.items[0]
     let init = binding.items[1]
     let gs = cljSymbol(gensymName("wo_"))
     cljList(@[cljSymbol("let"), cljVector(@[gs, init]),