fix: bump browse-snapshot maxTurns 5→7 for 5-command sequence

browse-snapshot runs 5 commands (goto + 4 snapshot flags). With 5 turns,
the agent has zero recovery budget if any command needs a retry.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

test/skill-e2e-bws.test.ts

@@ -67,7 +67,7 @@ Report the results of each command.`,
 5. $B snapshot -i -a -o /tmp/skill-e2e-annotated.png
 Report what each command returned.`,
       workingDirectory: tmpDir,
-      maxTurns: 5,
+      maxTurns: 7,
       timeout: 60_000,
       testName: 'browse-snapshot',
       runId,