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.

data/manifest.json

@@ -66,6 +66,14 @@
     },
     "file_descriptions": {
       "data/tool_alignment.jsonl": "Ensures the model selects the correct built-in tool over generic shell commands and optimizes for brevity."
+    },
+    "optimization_targets": {
+      "snippets": [
+        "renderCoreMandates",
+        "renderPrimaryWorkflows",
+        "renderOperationalGuidelines",
+        "renderGitRepo"
+      ]
     }
   }
 }