docs: removed unnecessary punctuation from graph agent docs

Graph-Agents.md

@@ -348,8 +348,8 @@ research_topic:
   meaning a failed first attempt may leave partial artifacts behind.
   Two contracts to keep in mind: worst-case node wall time is
   `max_attempts × timeout` (every attempt gets its own fresh budget), and
-  teammate message delivery is **at-most-once across the retry boundary** —
-  messages a failed attempt already drained are not re-delivered to the
+  teammate message delivery is **at-most-once across the retry boundary**.
+  Messages a failed attempt already drained are not re-delivered to the
   retry (same inbox Arc, no replay), and messages the failed attempt SENT
   remain with its peers.
 - **`fallback`:** Failure route with the same contract as `llm` nodes: on the
@@ -770,7 +770,7 @@ verdict scripts treat any fault as blocking (a degraded run can never read
 as CONFORMS / PASS / MERGE-READY), and detection is prefix-anchored so a
 report merely *quoting* the marker is never misclassified. The adversary
 additionally records caller-declared `verification_commands` once in a
-deterministic `run_checks` stage — execution criteria ("tests green") are
+deterministic `run_checks` stage. Execution criteria ("tests green") are
 judged against that recorded run, never re-executed by review branches.
 
 ### Turn cap (`max_iterations`)