name	papyrus-rebuild-index
description	Atomic — regenerate .papyrus/index.json and (optionally) semantic vectors for a workspace

papyrus-rebuild-index

Rebuild the JSON index for one workspace. Picks up external edits to RST files. When the optional papyrus[semantic] extra is installed, also re-embeds needs whose content hash changed into <workspace>/.papyrus/vectors.npy (and drops vectors for needs that no longer exist). Semantic reindex failures are swallowed so the base JSON rebuild never breaks.

Atomicity

(a) Indivisible: load_needs → write index.json → (if extra installed) incremental vector reindex, all under one filelock
(b) Input: scope (which workspace). Output: count of needs written
(c) Objective reward: <workspace>/.papyrus/index.json exists and contains exactly count needs; when extra is installed, vectors.npy exists with one row per current need
(d) Reusable: after bulk edits, merge conflicts, verify flows
(e) No interference: single workspace, filelocked

Input / Output

input:
  (none; rebuilds every RST workspace in the chain)
output:
  side effect: for each scope in chain: <workspace>/.papyrus/index.json rewritten
                plus <workspace>/.papyrus/vectors.npy + vectors_meta.json if papyrus[semantic] installed
  stdout: "Rebuilt index: <total> need(s) indexed."
  exit: 0

Success criterion

After invocation, for each RST backend in the chain:

test -f <workspace>/.papyrus/index.json
# plus, when papyrus[semantic] is installed:
test -f <workspace>/.papyrus/vectors.npy

And parsed JSON has "needs": [...] list whose total length matches the <total> printed on stdout.

Workflow

papyrus --workspace <dir> rebuild-index

MCP tool memory_rebuild:

{"workspace": "local"}

(The MCP tool is per-scope; the CLI command iterates all scopes in one call.)

Composition examples

After manual RST edit:

Edit RST file by hand (fix parse issue)
papyrus-rebuild-index to refresh .papyrus/index.json
papyrus-validate-links to check integrity

Pre-commit hygiene:

papyrus-rebuild-index for each workspace
papyrus-validate-links
Commit with rebuilt index