Ignore generated repository artifacts

Author: MyouzzZ

.gitignore

@@ -1,14 +1,24 @@
 # Generated by Cargo
 # will have compiled files and executables
-debug
-target
+debug/
+target/
+**/target/
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
 
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 
+# Rust coverage and profiling artifacts
+coverage/
+tarpaulin-report.html
+cobertura.xml
+lcov.info
+*.profraw
+*.profdata
+criterion/
+
 # Generated by cargo mutants
 # Contains mutation testing data
 **/mutants.out*/
@@ -26,6 +36,11 @@ target
 # Development configs (may contain secrets)
 config/dev/*.kubeconfig
 config/dev/*-secret.yaml
+.kube/
+kubeconfig
+kubeconfig-*
+*.kubeconfig
+kind-*.yaml
 
 # AI Agent & Planning Artifacts
 .claude/
@@ -72,4 +87,10 @@ results/
 
 # Helm rendered manifests — regenerate with: helm template stellar-operator charts/stellar-operator
 rendered/
-rendered-manifests.yaml
+rendered-manifests.yaml
+
+# Generated shell completions and Helm dependency/package artifacts
+completions/
+charts/**/charts/
+charts/**/Chart.lock
+charts/**/*.tgz