RFC‑REG‑0004: Registry Indexer for Corridor Events

index:
  glyph_type:
    ◇: [c-002, c-010, ...]
    ◆: [c-001, c-004, ...]
    ⬣: [c-003, c-007, ...]
  rci_band:
    low: [c-002, c-005]
    medium: [c-001, c-004]
    high: [c-003, c-007]
  remix_ancestry:
    parent_scrolls:
      s-1001: [s-1002, s-1003]
      s-2001: [s-2002]

import yaml
from collections import defaultdict
 
def load_events(event_files):
    events = []
    for f in event_files:
        with open(f, "r") as stream:
            events.append(yaml.safe_load(stream))
    return events
 
def build_indices(events):
    glyph_index = defaultdict(list)
    rci_index = {"low": [], "medium": [], "high": []}
    ancestry_index = defaultdict(list)
 
    for ev in events:
        cid = ev["event"]["corridor_id"]
        glyph = ev["event"]["new_glyph"]
        rci = ev["event"]["new_rci"]
        parent = ev["event"]["lineage"]["parent_scroll"]
        child = ev["event"]["lineage"]["child_scroll"]
 
        # Glyph index
        glyph_index[glyph].append(cid)
 
        # RCI band index
        if rci <= 0.33:
            rci_index["low"].append(cid)
        elif rci <= 0.66:
            rci_index["medium"].append(cid)
        else:
            rci_index["high"].append(cid)
 
        # Remix ancestry
        if parent and child:
            ancestry_index[parent].append(child)
 
    return {"glyph_type": glyph_index, "rci_band": rci_index, "remix_ancestry": ancestry_index}
 
def export_index(indices, outfile="registry/index/index_schema.yml"):
    with open(outfile, "w") as stream:
        yaml.dump({"index": indices}, stream, sort_keys=False)