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

Makefile

@@ -12,8 +12,8 @@ test:
 	nim c -r tests/test_pmap.nim
 	nim c -r tests/test_deps.nim
 	nim c -r tests/test_macros.nim
-	nim c -r tests/test_eval.nim
-	nim c --path:src -r tests/test_ai_assist.nim
+	nim c -d:ssl -r tests/test_eval.nim
+	nim c -d:ssl --path:src -r tests/test_ai_assist.nim
 
 test-reader:
 	nim c -r tests/test_reader.nim