legal: add Apache 2.0 copyright headers and NOTICE file

- Add copyright headers to 5 core service files:
  - BoundaryEnforcer.service.js
  - ContextPressureMonitor.service.js
  - CrossReferenceValidator.service.js
  - InstructionPersistenceClassifier.service.js
  - MetacognitiveVerifier.service.js

- Create NOTICE file per Apache License 2.0 requirements

This strengthens copyright protection and makes enforcement easier.
Git history provides proof of authorship. No registration required
for copyright protection, but headers make ownership explicit.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

NOTICE

@@ -0,0 +1,16 @@
+Tractatus AI Safety Framework
+Copyright 2025 John G Stroh
+
+This product includes software developed by John G Stroh.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this software except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

src/services/BoundaryEnforcer.service.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 John G Stroh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Boundary Enforcer Service
  * Ensures AI never makes values decisions without human approval

src/services/ContextPressureMonitor.service.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 John G Stroh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Context Pressure Monitor Service
  * Detects conditions that increase AI error probability

src/services/CrossReferenceValidator.service.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 John G Stroh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Cross-Reference Validator Service
  * Validates proposed AI actions against explicit user instructions

src/services/InstructionPersistenceClassifier.service.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 John G Stroh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Instruction Persistence Classifier Service
  * Classifies actions and instructions by quadrant and persistence level

src/services/MetacognitiveVerifier.service.js

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2025 John G Stroh
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 /**
  * Metacognitive Verifier Service
  * Implements AI self-verification before proposing actions