Fix macro expansion in REPL; update roadmap to reflect actual capabilities

src/cljnim.nim

@@ -1,6 +1,6 @@
 # Clojure/Nim — AI-First Clojure Compiler
 import os, osproc, strutils
-import reader, emitter, types, repl
+import reader, emitter, types, repl, macros
 
 proc getLibPath(): string =
   let appDir = getAppDir()
@@ -53,6 +53,7 @@ proc runFile*(inputPath: string) =
     quit(1)
 
 proc main() =
+  initBuiltinMacros()
   let args = commandLineParams()
   
   if args.len == 0:

src/repl.nim

@@ -1,6 +1,6 @@
 # AI-First REPL for Clojure/Nim
 import os, osproc, strutils, json, times
-import reader, emitter, types
+import reader, emitter, types, macros
 
 type
   ReplMode* = enum
@@ -25,6 +25,7 @@ proc getLibPath(): string =
   return "lib"
 
 proc initReplState*(mode: ReplMode): ReplState =
+  initBuiltinMacros()
   result.mode = mode
   result.ns = "user"
   result.defs = @[]