docs: M5d-2: after gate: ok, do not sum test results

Task 01 told Ornith to add up every `test result:` N passed. A greedy
sed kept the last digit (1512 became 1022) and it stopped with the
correct T1 and given test uncommitted. T50/T59: the last line of
make gate is the count; summing is not a stop.

Co-Authored-By: Grok 4.6 <noreply@x.ai>

docs/plans/M5d2/02-bxcore-tool-summary.md

@@ -139,7 +139,8 @@ become
 - [ ] **5. Check.** `git diff --stat` lists `crates/bxcore/src/log.rs`,
   `crates/loopd/src/baseline.rs`, `crates/loopd/tests/support/turn.rs`.
 - [ ] **6. Run the gate.** `cargo fmt --all`, then `make gate`, timeout 600000 ms. Last line
-  `gate: ok`. Test count **1518** (1512 before, plus 6).
+  `gate: ok`. Test count **1518** (1512 before, plus 6). After `gate: ok`, do not add up
+  `test result:` lines.
 - [ ] **7. Log and commit.** Task cell `M5d2/02-bxcore-tool-summary`. Stage with
   `git add crates/bxcore crates/loopd docs/implementer-log.md Cargo.lock`, then commit as
   `AGENTS.md` says.
@@ -155,7 +156,7 @@ become
 ## Stop and report if
 
 - The branch check fails; a "before" block is not found exactly once; step 2 differs; `cargo
-  check` warns; a test fails; the gate count is not 1518; you replay a summary as a `User` or
+  check` warns; a test fails; the gate's last line is not `gate: ok`; you replay a summary as a `User` or
   `Tool` message; you add `truncated`; you change `Setup::turn`'s return type.
 
 ## What the given tests pin