continue.md: add section detailing final REQUIRE statement review

continue.md

@@ -81,6 +81,19 @@ All constants defined in `src/test_utilities.h` — use those, do not redefine l
 - Ensure consistent tolerance usage (no hardcoded `1e-4` when `ANG_TOL_COARSE` exists).
 - Check for `compare_vec3` availability in `test_utilities` instead of 6 individual `REQUIRE_THAT` calls.
 - Run full suite again: `make test`.
+
+#### Final Systematic REQUIRE Statement Review
+After Step 3, review every `REQUIRE` in the test file:
+
+1. `grep -Rn 'REQUIRE' tests/<test_name>.cpp`
+2. Categorize each:
+   - **Hardcoded tolerances** → replace with named constant
+   - **Qualitative** (`a > b`, `x < 0.1`, `fabs(x) > 0`) → convert to quantitative via precalc
+   - **OK as-is** → booleans, integers, strings, enums
+5. Verify precalc outputs all needed values
+6. `make test-build` → `./build/orbit_test -s '[tag]'`
+
+### Step 4: User interaction
 - **Always ask for review** before moving to the next file.
 - **Only commit when asked.**