feat(optimization): implement manifest-driven extraction pipeline

- Implement `extract.ts` with robust character-aware parsing for snippets and tools.
- Consolidate research dependencies by moving `@ax-llm/ax` to root `optionalDependencies`.
- Relocate evaluation logic from `packages/core` to `scripts/optimization/lib/evals` to keep the production core lean.
- Add `optimization_targets` to `data/manifest.json` as the single source of truth for the pipeline.
- Implement comprehensive unit tests for extraction and variable masking with 100% pass rate.
- Update global config and linting rules to support the new optimization infrastructure.

scripts/tests/vitest.config.ts

@@ -10,7 +10,10 @@ export default defineConfig({
   test: {
     globals: true,
     environment: 'node',
-    include: ['scripts/tests/**/*.test.{js,ts}'],
+    include: [
+      'scripts/tests/**/*.test.{js,ts}',
+      'scripts/optimization/**/*.test.ts',
+    ],
     setupFiles: ['scripts/tests/test-setup.ts'],
     coverage: {
       provider: 'v8',