fix: missing copyright information

Signed-off-by: Shriti Priya <shritip@ibm.com>

Author: monshri

crates/cpex-wasm-host/benchmarking/comprehensive.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/benchmarking/comprehensive.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Comprehensive benchmarks: cold start, real computation, custom payload, concurrency.
 //!
 //! Complements invocation.rs (which measures isolation overhead) with benchmarks

crates/cpex-wasm-host/benchmarking/invocation.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/benchmarking/invocation.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Performance benchmarks: WASM plugin invocation vs native handler.
 //!
 //! Measures the isolation tax of running the same logic through the

crates/cpex-wasm-host/benchmarking/plot_results.py

@@ -1,4 +1,8 @@
 #!/usr/bin/env python3
+# Location: ./crates/cpex-wasm-host/benchmarking/plot_results.py
+# Copyright 2026
+# SPDX-License-Identifier: Apache-2.0
+# Authors: Shriti Priya
 """
 Performance comparison chart generator for CPEX WASM benchmarks.
 

crates/cpex-wasm-host/examples/wasm_capabilities_demo.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/examples/wasm_capabilities_demo.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 // WASM Capabilities Demo
 //
 // Demonstrates:

crates/cpex-wasm-host/examples/wasm_plugin_demo.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/examples/wasm_plugin_demo.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 // WASM Plugin Demo
 //
 // End-to-end demo mirroring cpex-core/examples/plugin_demo.rs, but all 4

crates/cpex-wasm-host/tests/test_custom_payload_pipeline.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/tests/test_custom_payload_pipeline.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Integration test: verifies the custom-payload WASM plugin pipeline end-to-end.
 //!
 //! Loads 4 real `.wasm` plugins (tool-invoke-checker, pii-guard, remote-authz,

crates/cpex-wasm-host/tests/test_sandbox_env.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/tests/test_sandbox_env.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Integration test: verifies WASM sandbox environment variable isolation.
 //!
 //! Loads a real `.wasm` plugin that reads env vars (HOME, PATH, SECRET_API_KEY).

crates/cpex-wasm-host/tests/test_sandbox_isolation.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/tests/test_sandbox_isolation.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Integration test: verifies WASM sandbox filesystem isolation.
 //!
 //! Loads a real `.wasm` plugin that attempts to read `/etc/passwd`.

crates/cpex-wasm-host/tests/test_sandbox_network.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/tests/test_sandbox_network.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 //! Integration test: verifies WASM sandbox network isolation.
 //!
 //! Loads a real `.wasm` plugin that attempts DNS resolution / network access.

crates/cpex-wasm-host/tests/test_security_enforcement.rs

@@ -1,3 +1,8 @@
+// Location: ./crates/cpex-wasm-host/tests/test_security_enforcement.rs
+// Copyright 2026
+// SPDX-License-Identifier: Apache-2.0
+// Authors: Shriti Priya
+//
 // Tests for defense-in-depth security enforcement in WasmBridgeHandler.
 //
 // These tests validate the four security checks: