---

name: ledger-registry description: > Reads /ledger/manifest.json, verifies per-ledger checksums, and returns the active ledger map. Version: 1.1 Author: Entropy Control Theory License: MIT Based on: Structure DNA v1.0 + PROFILE-GENERATOR-SPEC v1.0

ledger.registry — v1.1

Goal

Provide a single source of truth for active ledgers and integrity status.
If missing, auto-generate /ledger/profile.json (energy-aware preferences) based on profile.schema.json + profile.defaults.json.

Inputs

• none (or verify=true to force SHA-256 recompute)

Outputs

• Returns manifest summary:
  • module → path
  • schema version
  • metadata.version
  • metadata.checksum (valid/invalid)
• Auto-generates profile.json if absent, ensuring downstream Skills can use energy preferences.

Mechanism

1. Load /ledger/manifest.json or scan /ledger/ for .json files.
2. Check for presence of module "profile":
   • If absent → call ensure_profile(ledger_dir="/ledger").
   • Reload ledger list to include the newly created profile.json.
3. For each ledger, recompute checksum; compare with metadata.checksum per Structure DNA integrity rules.
4. Write updated checksums and ledger list back to /ledger/manifest.json.
5. Return runtime registry map.

Pseudocode

Copydef run_registry(ledger_dir="/ledger"):
    ledgers = scan_ledgers(ledger_dir)

    # ✅ NEW STEP: ensure profile.json exists
    if not any(L["module"] == "profile" for L in ledgers):
        ensure_profile(ledger_dir)  # uses profile.schema.json + profile.defaults.json
        ledgers = scan_ledgers(ledger_dir)  # re-scan to include it

    manifest = build_manifest(ledgers)
    manifest["metadata"]["last_sync"] = now_iso()
    manifest["metadata"]["checksum"] = recompute_checksum(manifest)
    save_json(f"{ledger_dir}/manifest.json", manifest)
    return manifest