chore: move sample files to testdata/examples and clean up .gitignore

- Move root-level sample data files (data.json, data.yaml, input.txt, input.yaml, encoded.txt) to testdata/examples for better organization
- Remove duplicate entries from .gitignore (codewise, codewise-cli)
- Remove outdated generated test output entries from .gitignore
- Update validator package placeholder with proper documentation
- Improve repository cleanliness and fixture organization

Author: AryanSharma9917

.gitignore

@@ -1,6 +1,4 @@
-# -----------------------------
 # Go / Build / Binary files
-# -----------------------------
 *.o
 *.a
 *.so
@@ -15,9 +13,7 @@ cobra.test
 bin/
 dist/
 
-# -----------------------------
 # Project specific / temporary
-# -----------------------------
 output.json
 output.yaml
 output.xml
@@ -31,9 +27,7 @@ config.yaml
 # pkg/prompt folder (included for interactive prompts)
 # pkg/prompt/   <- commented out so files are tracked
 
-# -----------------------------
 # IDE / Editor
-# -----------------------------
 .idea/
 .vscode/
 *.iml
@@ -42,20 +36,12 @@ Session.vim
 .netrwhist
 *~
 
-# -----------------------------
-# Other generated files / folders
-# -----------------------------
+# Generated binaries and build outputs
 codewise-cli
 myapp/
 myapp/codewise
 codewise
 myappcodewise-cli
-codewise-cli
-JTY_output.yaml
-KVTJ_output.json
-YTJ_output.json
 
-# -----------------------------
 # Environment files
-# -----------------------------
 .env

pkg/validator/validate.go

@@ -1,3 +1,4 @@
-package encoder
+package validator
 
-// placeholder until implemented
+// Package validator is reserved for future framework and configuration validation logic.
+// Currently under planning; v2.0+ roadmap.

testdata/JTY_output.yaml

@@ -0,0 +1,4 @@
+{
+  "name": "Codewise",
+  "version": "1.0"
+}

testdata/YTJ_output.json

@@ -0,0 +1,4 @@
+{
+  "language": "Go",
+  "name": "Codewise"
+}