descrip length check and fix

echo-memory.plugin.src/skills/echo-memory/scripts/test_echo_client.py

@@ -61,6 +61,15 @@ def test_read_many_tolerates_unreadable_file_as_none() -> None:
         echo.get_text = orig
 
 
+def test_plugin_description_under_500_chars() -> None:
+    # Marketplace cap — the description has silently regressed past it before (a 525-char
+    # relapse + an earlier "fix description length" commit). build.py fails the build on this;
+    # this guards it in CI so it's caught before packaging.
+    manifest = Path(__file__).resolve().parents[3] / ".claude-plugin" / "plugin.json"
+    desc = json.loads(manifest.read_text(encoding="utf-8")).get("description", "")
+    assert 0 < len(desc) < 500, f"plugin description is {len(desc)} chars (must be under 500)"
+
+
 def test_stem_extracts_literal_directory_prefix() -> None:
     assert check_routing.stem(r"^projects/active/[^/]+\.md$") == "projects/active/"
     assert check_routing.stem(r"^areas/(business|personal)/[^/]+\.md$") == "areas/"