assistant/egress.rs: screen_outbound(body, ctx) -> EgressVerdict runs on
every request body about to leave this node for a cloud backend. G-B1
scan_secret_shapes checks for macaroon-shaped hex runs, BIP39-length word
runs, ecash/Nostr-key-shaped strings, and the literal contents of files
under data_dir/secrets — a hit fails closed (BlockFallBackLocal), logging
only the match's kind, never the value. G-B2 assert_turn_minimal checks the
outbound body against a mechanical allowlist of this turn's own fields (the
user's turn, this turn's granted tool names, this turn's own tool results);
an unrelated earlier tool result or content wrapped for a different turn is
truncated out rather than eyeballed. An unparsable/ambiguous body also fails
closed. MAX_OUTBOUND_CONTEXT_CHARS caps body size independent of minimality.
Wired into backends/claude.rs's send() before the outbound HTTP request (on
a block, send() errors before anything is sent — Rule 3, outside this
task's originally-declared file list but structurally required to give
screen_outbound a real caller); never wired into ollama.rs — nothing leaves
the node on that leg, so paying the scan cost would be pointless.
mod.rs: AssistantCounters/OwnerNotice — grant refusals, validation
failures, turns-per-request, untrusted-content-present,
cloud-escalation-while-local-up, blocked-egress and MAX_TURNS-reached
counters, each raising an owner_notice() at its own AI-SPEC §7b threshold.
Local and owner-facing only: no exporter, no /metrics, no OTLP anywhere in
assistant/ or rate_limit.rs. backends/mod.rs's select_backend raises a
cloud-escalation-while-local-up notice when Ollama is reachable but its
configured model isn't tool-capable (Rule 3, same file-scope reasoning).
9/9 assistant::egress:: tests pass in this task's own isolated state
(Task 1's 56 plus these 9 — ToolExecCtx's counters field and its loop_.rs
call sites are Task 3's own commit, since nothing in this task's behavior
needs them yet).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
D-01/D-02/D-06 tracer slice: a new crate::assistant module (CallerScope,
PermissionCategory, ToolExecCtx, chat()) runs a multi-turn tool-calling loop
(run_loop/execute_tool, MAX_TURNS=8) against a curated single-tool registry
(system_disk_status, hand-written JSON Schema — no schemars) via a Claude
Messages API backend. execute_tool is the single choke point: unknown tools
are refused not ignored, D-16 category grants are re-checked even though the
system prompt already omits ungranted tools, and every real tool dispatches
through the SAME handle_system_disk_status RPC handler every other
authenticated caller uses (assistant_dispatch_tool bridge in
api/rpc/assistant_chat.rs) — never an AI-only backdoor.
assistant.chat is registered in dispatcher.rs as a single guarded
`m if m.starts_with("assistant.")` arm reached only after the existing
session-cookie + CSRF + role.can_access() gate in api/rpc/mod.rs — asserted
directly by assistant_methods_require_session against the live
UNAUTHENTICATED_METHODS list (visibility only widened to pub(crate) for that
assertion; the list's contents are untouched, per the Phase-10 hard
constraint).
Key read from data_dir/secrets/claude-api-key — the same path
mesh/rpc/mesh/assistant.rs already probes — never a second key location.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
