add more instructions for test refactoring

continue.md

@@ -26,10 +26,21 @@
 - Replace qualitative checks (`a > b`) with quantitative (`WithinAbs(expected, tol)`)
 - `INFO("label: " << value)` for debugging context
 
-## 4. Process per file
+## 4. Precalc scripts
+- For each test file, create `scripts/precalc_<test_name>.py` that computes expected values.
+- Use `scripts/sim_engine.py` for physics (orbital_to_cartesian, propagate, etc.).
+- Output C++-style comments with precalculated constants for embedding in the test.
+- Run with: `python3 scripts/precalc_<test_name>.py`
+- If sim_engine.py lacks a feature (e.g., spacecraft, OrbitTracker), use analytical formulas instead (**but notify the user what feature was missing**)
+
+## 5. Process per file
 - Process **one test file at a time**.
-- For each file, **discuss with the user** how to precompute `REQUIRE` values — analytical formulas, Python scripts, or simulation runs.
-- Copy from `old_tests/` to `tests/`, rewrite, rebuild, verify.
+- Create `scripts/precalc_<test_name>.py` and run it to get expected values.
+- Copy from `old_tests/` to `tests/`, rewrite using the pattern from `test_true_anomaly_roundtrip.cpp`.
+- Rewrite TOML configs to TOML 1.0 inline table syntax (single-line `{}`).
+- Build and verify: `make test-build` then `./build/orbit_test '[tag]' -s`.
+- Run full suite: `make test`.
+- Replace broken tests (e.g., OrbitTracker bugs) with working alternatives using propagation checks.
 - **Always ask for review** before moving to the next file.
 - **Only commit when asked.**