Operator-ordered milestone, built under an explicit no-risk constraint while the paper application is in flight: strictly ADDITIVE (one new module + one CLI subcommand; zero changes to wallet semantics, the public site, or anything the paper describes), LOCAL-ONLY (never deployed; binds 127.0.0.1), and READ-ONLY in v1 (human approve/deny is deliberately deferred — that is a custody-semantics change belonging to a separately reviewed milestone). New: src/pacta/walletui.py — four views over an existing wallet: - Posture: latch state, ledger head with FULL hash-chain re-verification, pinned quorum members, spending policy verbatim. - Signature queue: airgap outbox/inbox, observed never operated. - Incidents & refusals: verbatim records, newest first. - Receipt inspector: paste attestation + receipt + log key; verdict, per-signature results, and diagnostics come verbatim from transparency.verify_receipt — the deployed verifier itself, reused not reimplemented. Design law, stated in the module and enforced by tests: THE COCKPIT RENDERS EVIDENCE, IT NEVER ASSERTS IT. Every panel recomputes at request time and carries a provenance line (function + timestamp); anything unverifiable renders a loud FAILED-TO-VERIFY panel — no cached green, no neutral gray. Panels state what they do NOT prove (e.g. binary pinning vs source-to-binary correspondence). CLI: pacta wallet cockpit --wallet DIR [--host --port]. Tests (10 new, suite 118 -> 128 green): recomputed-evidence rendering, CHAIN BROKEN on tampered ledger, loud failure on collector error, latched-state rendering, airgap queue states, verbatim incident/refusal rendering, fail-closed inspector on garbage, real-evidence roundtrip (skips if example evidence absent), full-sweep BYTE-LEVEL read-only guarantee (wallet dir hash-identical after all GETs + a POST), and fail-fast on non-wallet dirs. Rendering additionally verified visually against a live demo wallet (posture, quorum table, incidents). Docs: docs/cockpit.md; WALLET.md section; ESTATE.md + llms.txt updated. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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The custody cockpit — a read-only surface for the human operator
pacta wallet cockpit --wallet <dir> serves a local web UI
(default http://127.0.0.1:8471) over an existing warden wallet.
warden has always been agent-native (MCP) and CLI-native; the cockpit is
the third surface — for the human who ultimately answers for the money.
The design law
The cockpit renders evidence; it never asserts it. Every panel is
recomputed at request time by the same functions the wallet itself uses
(Wallet.posture(), Wallet.verify_ledger(), directory listings,
transparency.verify_receipt), and every panel carries a provenance
line naming the function and the timestamp. Anything that cannot be
recomputed renders as a loud red FAILED-TO-VERIFY panel. There is no
cached green and no neutral gray — a cockpit that shows unverified green
lights would be the anti-warden.
The read-only guarantee
The cockpit cannot approve, sign, unlatch, or modify custody state. It
calls only read paths; the one POST route (the receipt inspector) parses
submitted artifacts in memory and throwaway temp files, never near the
wallet directory. tests/test_walletui.py asserts this at the byte
level: a full request sweep, POST included, leaves every file in the
wallet directory hash-identical. Human approve/deny is deliberately NOT
here — that would be a custody-semantics change, which belongs to a
separate, explicitly reviewed milestone.
The four views
| view | shows | recomputed by |
|---|---|---|
Posture (/) |
custody latch state, ledger head with full hash-chain re-verification, the pinned quorum members (backend, component, tier, source commit, binary hash), spending policy verbatim, incident/refusal counts | Wallet.posture() / Wallet.verify_ledger() |
Signature queue (/queue) |
parked airgap signing requests (outbox) and whether the device has answered (inbox) — observed, never operated | airgap outbox/inbox listing |
Incidents & refusals (/incidents) |
incident records and signed refusal receipts, verbatim, newest first | incidents/*.json, receipts/*.json |
Receipt inspector (/inspect) |
paste an attestation + transparency receipt + log public key; the verdict, per-signature results, and diagnostics come verbatim from the deployed verifier | pacta.transparency.verify_receipt |
Every panel also states what it does not prove (e.g. the quorum table says binary hashes are pinned but source-to-binary correspondence is out of scope until reproducible builds).
Serving
pacta wallet cockpit --wallet ~/my-wallet # 127.0.0.1:8471
pacta wallet cockpit --wallet ~/my-wallet --port 9000
The server binds localhost by default and is not meant to be exposed; there is no authentication because there is nothing to operate.