- reconcile: ClassAgentUpdate op class; always Destructive (no provenance
blesses replacing the root-adjacent binary). classify test + companion
(TestClassify_AgentUpdateAlwaysDestructive).
- opsign: `-op agent_update` with -agent-version + -sha256 (isHex64-validated);
params {version,sha256}. isHex64 test (Group D).
- config: SelfUpdateConfig{URLTemplate,Username,Token,StateDir,DwellSeconds}
+ WithDefaults + Token redaction.
- internal/selfupdate: Executor (download → verify vs the SIGNED sha → sudo -n
wrapper `apply`; sha is the only integrity root — mismatch refuses + removes,
agent untouched); Manager (startup dwell → `commit`; version-mismatch → no
commit + loud WARN + marker left for report visibility; shutdown-before-dwell
leaves pending). WrapperRunner seam → tests never shell out.
- hub report: additive selfupdate_pending(+version) via SetSelfUpdateReporter
seam; both omitempty (Wireguard precedent) so the cross-repo golden contract
stays byte-stable — no hub change.
- capability manifest: 3 non-critical FELHOM_SELFUPDATE probes.
- main.go: updateExec appended to the executor chain; commit-manager wired to
the report seam + MaybeCommit goroutine after core init.
Tests: Group A (executor happy/sha-mismatch+companion/bad-params/wrapper-fail),
B (agent_update rides the real gate: pinned-key executes, non-pinned +
retarget rejected), C (commit/version-mismatch/no-pending/shutdown), D (opsign).
C2 companion red-proof verified (neutered Go verify → bad binary reaches apply
→ test fails), reverted. Full go test ./... green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PSK5g6qYLknKj8u3QAFEr6
The control envelope becomes live: the agent caches the hub's desired-state +
generation and re-fetches GET /hosts/{id}/desired-state only when the
generation advances. A new internal/desired Syncer maps the wire shape into a
reconcile.CachingProvider feeding the engine; benign deltas reconcile, an
explicit guest decommission is gated pending_signature (exec is 10B). Adds the
DesiredStateResponse/WireDesiredState wire types + Client.FetchDesiredState +
the loop EnvelopeObserver seam. Cross-repo golden (envelope + desired-state)
byte-identical with the hub.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The security core of slice 4: hub-supplied intent is no longer trusted for
destructive change. The gate fronts the per-guest queue's executor, so every
mutation passes it. Reuses internal/authz for all crypto (surface untouched).
- Classifier (doc 03 §4): benign vs destructive by provenance + data-bearing-
ness, NOT by verb. Destroy/overwrite of customer data is destructive unless
agent-internal provenance (same-journaled-txn create, or agent-tagged scratch)
makes it benign — and that provenance is journal-recorded, NEVER hub-sourced.
Unknown op class fails safe to destructive.
- Reversibility gate: benign -> allowed unsigned; destructive -> requires a
verified, role-scoped, action-bound operator signature, else pending_signature
and never executed. Every decision audited (signal, never the guard).
- Signed-op consuming layer over authz.Verifier.Verify (locked pipeline
untouched): role-scoping (doc 04 §4 — recovery=rotation only, operational=
ordinary destructive + planned rotation) + op-to-action binding (op+host+
guest+params must match the gated action).
- Signed-job orchestration: idempotency dedupe by nonce + journal-wrapped
execution via an injected DestructiveExecutor (nil this slice — inert).
- Crash recovery (Note 1): Engine.Recover consumes the journal InFlight() set at
startup (resume-or-rollback) — covers an op that crashed after the POST and
before its terminal record, which idempotency dedupe alone cannot. Added
TaskStatusOnce to the GuestAPI seam. Wired into daemon startup.
- Note 2: memory comparison canonicalized to MiB (desiredMemoryMiB) so a
non-MiB-aligned MemoryBytes converges in one pass, not perpetual drift.
- Daemon: builds the verifier from config signers (none = nil verifier, the
common slice-4 state), the gate (+SlogAudit), runs Recover before mutating.
Adversarial matrix proven against the REAL authz.Verifier with in-test-minted
SSHSIGs (framing replicated in reconcile's test binary; authz untouched, no
signing added to the verify-only package): unsigned job + unsigned desired-state
delta -> pending_signature; unknown signer/expired/replay-across-restart/wrong
host -> typed authz rejections; wrong guest/op/params -> binding_mismatch;
recovery key on ordinary destructive -> role_denied; hub-supplied scratch tag
ignored -> refused; valid+role+target+fresh nonce -> accepted then replay
rejected. Full module race-clean + vet-clean on the Linux build server.
Inert this slice: no destructive deltas served until slice 10; the destructive
path is classified, gated, and tested but not wired to live execution.
CHECKPOINT: Phase B complete (slice 4 done). Awaiting validation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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