Address review feedback on entry format and structure

- Condense all tool descriptions to single objective sentences
- Move emoji indicators to prefix position after separator
- Remove Legend section from ToC, replace with inline indicators line
- Exclude drafts/ from markdownlint checks
- Preserve original multi-sentence descriptions in drafts/ for future articles

Author: be-next

.markdownlint-cli2.jsonc

@@ -4,5 +4,8 @@
     "MD033": false,
     "MD041": false,
     "MD029": false
-  }
+  },
+  "ignores": [
+    "drafts/**"
+  ]
 }