DECISIONS: D1 cuentas/tokens, D2 estado fuera de checkouts, D3 trazabilidad
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# Architectural decisions
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# DECISIONES del operador (binding para todos los agentes)
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Each entry: decision, why, and what it costs us. Newest last.
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## D1 (r26): Cuentas y tokens
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NINGUN agente puede: modificar permisos de la cuenta del operador (pattern),
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promoverla/degradarla de admin, ni crear tokens a su nombre — ni con fines de
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prueba. Para pruebas de API: cuentas de prueba propias (p.ej. ci-bot o una
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dedicada), creadas y revocadas por el agente. Antecedente: en r25 se generó un
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token de pattern para una prueba; práctica prohibida desde esta decisión.
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## D1 — uv + uv.lock as the lockfile
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`uv` manages the pinned interpreter (3.12) and produces `uv.lock`. CI installs
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with `uv sync --frozen`; nothing runs against unpinned trees.
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*Cost:* contributors need uv (single static binary).
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## D2 (r26): Estado del runtime
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Ningún proceso escribe estado dentro de los checkouts de deploy. El estado
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vive en /var/lib/cayce/ (lessons.md y similares). Los árboles de
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/srv/cayce-core, /srv/bitcoinhotels y /srv/hardcap-news quedan limpios sin
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excepciones (check-clean-trees en verde).
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## D2 — Tests on SQLite; migrations authoritative for Postgres
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Tests run on file-backed SQLite via `metadata.create_all` (fast, no service
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dependency). The Alembic chain is the production schema path; `make
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migrate-check` (CI job) smoke-runs `alembic upgrade head` on SQLite.
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*Cost:* Postgres-specific features (e.g. JSONB, partial indexes) stay unused —
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the schema uses portable `sa.JSON` instead.
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## D3 — LLM behind an in-repo provider interface; null by default
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`cayceops.llm.LLMProvider` is the only seam. `null` provider raises — components
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fall back to deterministic rules. `openai-compat` uses stdlib `urllib` against
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any OpenAI-shaped endpoint; no SDK dependency.
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*Cost:* no retries/streaming/tool-calls — acceptable for classification and
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draft drafting. Add providers by implementing `complete()`.
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## D4 — Nostr client implemented in-repo (coincurve + websockets)
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NIP-01 event build/sign/publish is ~150 auditable lines vs. a black-box SDK.
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Keys accepted as 32-byte hex only. Relays are plain env config; publish is
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fire-and-wait with a timeout; the event id is stored as `post_ref`.
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*Cost:* no NIP-05, no retries across relay pools — fine for kind-1 notes.
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## D5 — AUTONOMOUS_MODE semantics (the only non-human approval path)
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Default **false**: only human-approved proposals execute, only
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human-approved drafts are sendable/publishable.
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**true** adds exactly one capability: the executor may auto-approve
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`proposed` items whose `kind` is in `CAYCE_OPS_AUTONOMOUS_KINDS`, up to
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`CAYCE_OPS_AUTONOMOUS_DAILY_CAP` per day, recording actor `auto:policy` in the
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audit log. Everything else still requires a human. Auto-approval never touches
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mail drafts or content items.
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*Cost:* two code paths; both audited; the autonomous one is off by default and
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cap-bounded.
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## D6 — CI workflow files ship now; enforcement gate is `make check` until a runner exists
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`.gitea/workflows/ci.yml` (Gitea Actions) and `.github/workflows/ci.yml`
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(identical) run ruff, alembic smoke, pytest, gitleaks on every PR/push. The
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current host runs no Gitea Actions runner, so until one is provisioned the
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same gate is enforced locally: `scripts/pre-push` runs `make check` (lint +
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tests + migration smoke + full-history secret scan) before every push, and the
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audited commit hash in `AUDIT.md` is the one that passed it.
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*Cost:* CI results are deferred on the current host; the gate itself is
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identical to CI.
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## D7 — gitleaks allowlist for test fixtures
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`tests/` contains invented data (fake Nostr key, fake merchant mail). It is
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allowlisted in `.gitleaks.toml` so the history scan stays signal-only.
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*Cost:* a real secret committed under `tests/` would not trip the scanner —
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compensating control: fixtures are reviewed in PRs, and no fixture ever reads
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the environment.
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## D8 — Proposal history kept when retiring the grant text
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The repo began as a grant proposal; the retirement commit replaces it with the
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project README (no grant references in the tree). The old commits stay — the
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audit story ("this started as X, the operator mandated Y, here is the diff") is
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more honest than a rewritten birth.
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*Cost:* `git log` still shows the word "OpenSats" in old messages. The tree and
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README carry none.
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## D9 — Executor plugins are in-process registrations
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An action plugin is a Python function registered in
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`cayceops.components.executor.plugins.REGISTRY`, mapped by proposal `kind`.
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`http_post` exists but is inert unless `CAYCE_OPS_ENABLE_HTTP_ACTIONS=true`.
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*Cost:* no sandboxing of plugins — plugins are repo code, reviewed like
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everything else.
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## D10 — Audit chain is hash-chained; approval can require operator signature (post-audit)
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`audit_log` rows chain sha256(prev_hash|fields); `verify_audit_chain` walks it,
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the monitor can surface breaks. With `CAYCE_OPS_OPERATOR_PUBKEY` set,
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`executor approve` REQUIRES a BIP-340 signature over
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sha256("cayce-ops:approve:<id>") from the operator key — `--actor` becomes a
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label, the key is the proof (the audit's "anyone can sign as anyone").
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*Cost:* without a pubkey configured the gate degrades to the old free-text
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actor; separate DB roles per daemon remain a deployment TODO (SQL to tighten
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ships in deploy/roles.sql).
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## D11 — Mail threading now has a real first-contact path (post-audit)
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Sends create an OUTBOUND row (own Message-ID, In-Reply-To -> inbound);
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inbound rows keep their original Message-ID. `maild compose` creates the
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initial outreach draft for a proposal. Approval is bound to the draft text
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via sha256 (`approved_hash`): an edited draft refuses to send until
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re-approved. Each send commits in its own transaction — SMTP failure on
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message N can no longer resurrect 1..N-1 as duplicates.
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## D12 — IMAP \\Seen only after commit; content gates tighten (post-audit)
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Messages are fetched unmarked and flagged \\Seen after the processing
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transaction commits (crash mid-batch no longer loses mail). Publisher:
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caption hash-bound at approval, disabled channels are terminal (`SKIPPED`),
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publish failures burn a bounded attempt budget before abandonment.
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`risk_score` renamed `match_score` (keyword relevance) and auto-approval
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takes the HIGHEST score first.
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## D13 — No non-human approval path (round 2, supersedes D5)
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Operator signatures are mandatory for approvals AND re-verified at
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execution/send/publish time against current content + deployment id. With
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that gate, the AUTONOMOUS_MODE auto-approval path cannot exist: it would
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produce unsigned approvals the gate refuses. `_auto_approve` is inert and
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audits `autonomy_disabled` when invoked. *Cost:* AUTONOMOUS_MODE is now
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inert by design.
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## D14 — Signatures bind content + deployment (round 2)
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message = sha256("cayce-ops:<type>:<deployment_id>:<id>:<content_hash>").
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content_hash is canonical-json of the fields that matter per type. Full
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signatures live on the row (operator_signature) and in the audit detail.
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Verification happens again at run time: unsigned rows (raw SQL approval)
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revert to their pre-approval state with an error audit. *Cost:* a deployment
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id env var is mandatory; signatures must be recomputed if content changes.
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## D15 — Approval classifier veto (round 2)
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Any negation token anywhere in a mail vetoes an `approval` classification →
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needs_review. Simpler and strictly conservative vs. per-pattern negation
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lists. *Cost:* genuinely-positive approvals containing stray negations
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(e.g. "we have no reason not to welcome you") need human triage.
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## D16 — La clave del operador nunca es una identidad de agente
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**Fecha:** 2026-10-28
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**Contexto:** se descubrió que `CAYCE_OPS_OPERATOR_PUBKEY` estaba configurada
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con la pubkey de Cayce — es decir, Cayce se aprobaba a sí misma. La firma
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BIP-340 era técnicamente válida pero semánticamente nula: "aprobación humana"
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firmada por el agente no es aprobación humana.
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**Regla:** los daemons y el CLI se niegan a operar si la pubkey del operador
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coincide con:
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1. La pubkey derivada de cualquier clave privada cargada en la config
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(`CAYCE_OPS_NOSTR_PRIVATE_KEY` u otra identidad de agente futura), o
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2. Cualquier pubkey en `CAYCE_OPS_FORBIDDEN_OPERATOR_PUBKEYS` (deny-list
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explícita, para claves fuera de este proceso).
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**Implementación:** `cayceops.signing.validate_no_self_approval()`, llamada
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desde `_signing()` en executor/maild/publisher. Lanza `SelfApprovalError`.
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**La firma del operador se produce FUERA de la VPS.** El CLI `approve-*`
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acepta la firma como parámetro (ya lo hace); nunca la genera él. Mientras
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no exista el signer externo, `CAYCE_OPS_OPERATOR_PUBKEY` debe permanecer
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vacía — los daemons se niegan a operar y eso es lo correcto.
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**La nsec de Cayce NO se toca:** sigue siendo la identidad del agente para
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publicar y anclar. Lo que se prohíbe es usarla como clave de operador.
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## D3 (r26): Trazabilidad de pushes
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Todo push queda identificado por autor; el reporte diario lista los pushes
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del día por autor, y todo merge a main que toque archivos de CODEOWNERS
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dispara DM urgente si no lo mergeó pattern.
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