function isMarkdownPlaceholderLine(raw: string): boolean {
  const line = raw.trim();
  if (!line || /^[-*+]$/.test(line)) return true;
  if (/^#{1,6}\s+\S/.test(line)) return !/\s[-*+]\s+\S/.test(line);
  return false;
}

function isPlaceholderShortTermSnippet(raw: string): boolean {
  const snippet = normalizeSnippet(raw);
  if (!snippet || /^[-*+]$/.test(snippet)) return true;
  const lines = raw.split(/\r?\n/);
  const nonEmpty = lines.map((line) => line.trim()).filter(Boolean);
  return nonEmpty.length > 0 && lines.every(isMarkdownPlaceholderLine);
}

function isUnpromotableShortTermSnippet(raw: string): boolean {
  const snippet = normalizeSnippet(raw);
  return !snippet || isPlaceholderShortTermSnippet(raw) || isContaminatedDreamingSnippet(snippet);
}

function isMeaningfulRelocationSubstring(raw: string): boolean {
  if (isPlaceholderShortTermSnippet(raw)) return false;
  const tokens = normalizeSnippet(raw)
    .split(/[^A-Za-z0-9_]+/)
    .filter((token) => token.length >= 3);
  return tokens.length >= 3 && tokens.join("").length >= 18;
}

if (isMeaningfulRelocationSubstring(targetSnippet) && windowSnippet.includes(targetSnippet)) {
  return { matched: true, quality: 2 };
}
if (isMeaningfulRelocationSubstring(windowSnippet) && targetSnippet.includes(windowSnippet)) {
  return { matched: true, quality: 1 };
}

it("treats markdown skeleton placeholders as non-promotable", () => {
  expect(__testing.isPlaceholderShortTermSnippet("-")).toBe(true);
  expect(__testing.isPlaceholderShortTermSnippet("## Tagesnotizen\n-\n## Entscheidungen\n-")).toBe(true);
  expect(__testing.isPlaceholderShortTermSnippet("- Keep gateway restarts supervised.")).toBe(false);
});

it("does not record placeholder-only grounded candidates for promotion", async () => {
  // daily note contains only `## Tagesnotizen` and `-`
  // recordGroundedShortTermCandidates(...) with snippet `-`
  // rankShortTermPromotionCandidates(...) should return []
});

it("does not rehydrate section summaries onto empty bullet placeholders", async () => {
  // candidate snippet is a real section summary
  // source range points at a stale/empty placeholder bullet
  // applyShortTermPromotions(...) should apply 0 promotions
});