placard

Read and write Placard sidecar digests — `*.placard.md` markdowns beside expensive artifacts (decks, PDFs, spreadsheets, transcripts, image-heavy docs) that let an LLM understand a project cheaply. USE WHEN READING - a folder already contains `PROJECT.placard.md` or `*.placard.md` sidecars, or a session was told placards are present - read the map and the digests' inline `## Full text` instead of opening the originals; open an original only when a digest's "Open the original if…" contract fires or its `source_sha256` is stale. USE WHEN CREATING - the user wants to "digest" a folder, "summarize files for later", "make a project readable to an LLM", build or refresh a project map, or check whether digests are stale. Also use proactively before deep work in a folder full of decks/PDFs/spreadsheets.