Completes the hub half of R-39's fleet fix on top of the generation core (c484aa2).
pbsdrheal gains an auth_failed TRIGGER — a new trigger in the existing machine, not a
new machine. A box whose credential PBS rejects escalates to a fresh mint, never a
re-stage (which would re-feed the secret PBS just rejected), through the EXISTING damper:
a 401 flap must not become a secret-minting chain. With the generation stamp this closes
the loop end to end — agent proves the 401, hub re-keys, generation advances, descriptor
hash moves, agent re-consumes.
consumed_at honesty gauge: a staged secret still unconsumed past a 15-minute grace while
the box reports `applied` is surfaced with its own event. That is the exact 2026-07-18
fingerprint and a disagreement no single tier can see alone. Deliberately a SURFACE, not
a heal — auto-re-issuing on it would mint a second secret on top of an unconsumed one,
which is the mint/consume race R-39(a) already recorded. One event per distinct report,
and an honestly-stuck box does not double-report (its unconsumed secret is the symptom
being healed, not a contradiction).
R-50b(a): ArtifactManifest.WrapperSHA256 + operator field + host-page drift surface. The
PBS wrapper is root-owned 0755 and the pinned sudoers vector, yet installed unversioned
from raw/branch/main and absent from every manifest. Agents >=0.91.0 report the installed
hash; a mismatch is surfaced. An unknown on EITHER side reads as quiet, never as drift —
lighting every host amber on rollout day is how a warning becomes background noise. The
delivery channel itself stays R-50b(b)/(c).
Compatibility unchanged: safe for 0.90.0 agents (unknown JSON key dropped); the re-arm
and auth-honesty guarantees need agent >=0.91.0, so MinAgent moves only after the fleet
has self-updated.
Tests: auth_failed escalate/debounce/recovery-forgets-streak; honesty gauge incl. grace
window, the restage edge (consumed_at deliberately NULLed), consumed-never-alarms, and
honest-stuck-no-double-report; wrapper drift incl. both unknown directions. Red-proof run
at the assertion level: removing the auth_failed arm fails the escalation tests with
reissues=0.
The fleet half of R-39. An ep0 credential re-issue re-keys the SECRET of an existing
token, so token_id, fingerprint, datastore and namespace all come back byte-identical.
The agent re-applies on the descriptor's CONTENT HASH, so a re-issue was invisible to a
converged box: it short-circuited, never consumed the fresh secret, and served a revoked
credential while reporting `applied` — the N100 failure of 2026-07-18.
host_pbs_secrets gains a monotonic per-host `generation`, advanced by every fresh MINT and
by nothing else, stamped into the descriptor as `secret_generation`. That is now the only
field a re-key moves, and it is what re-arms the agent.
DEVIATION FROM SPEC, deliberate: the brief said to return "the new row's id (int64) …
no schema change". There is no row id — host_pbs_secrets is keyed by host_id and UPSERTed
last-write-wins, so a new row never exists, and created_at collides for two mints in the
same second. An additive counter column is the only monotonic source; it uses the repo's
existing idempotent ALTER-TABLE idiom.
RestageHostPBSSecret deliberately does NOT advance it: a re-stage re-arms the SAME secret,
the descriptor content genuinely has not changed, and a bump would cause a pointless agent
refetch loop (that method's own contract says so).
Also corrects a comment that asserted the re-issue refreshes the descriptor "with the NEW
token_id/fingerprint". That is false for a re-key, and believing it is why the descriptor
was never expected to be identical in the first place.
omitempty is load-bearing: a zero generation must not start emitting a new key into every
pre-existing descriptor, which would itself be a fleet-wide spurious re-apply.
Compatibility: agents below 0.91.0 drop the unknown JSON key and behave exactly as today —
inert, not breaking (Scenario C).
Tests: store-level monotonicity + per-host isolation + restage-leaves-it-alone; descriptor
byte-change, omitempty, and sibling-key round-trip; and a FLOW-level test driving
ReissuePBSDR against a fake that models a real re-key. Red-proof run at the assertion
level (not the compiler): commenting out the stamp makes the flow test fail with both
byte-identical blocks printed.
Implements SPIKE-pbsdr-selfheal-2026-07-15 (e8f8c44). A box re-installed/rolled
back onto its stable host_id loses its agent-side converged marker; the hub
keeps the enabled descriptor + a CONSUMED one-time secret, the WG peer persists
(changed==false, cascade can't re-fire), so the agent sits in waiting_secret
forever. The missing piece is a consumable secret, not the descriptor.
New internal/pbsdrheal reconciler (5m, wgsync shape): for enabled+provisioned
hosts whose latest report pbs_dr.state is a stuck state past a >=2-distinct-report
debounce, re-stage the stored secret (store.RestageHostPBSSecret: clear
consumed_at, no ep0 call, NO generation bump); escalate to Re-issue (web
ReissuePBSDR) only when no secret is stored or the agent reports consumed_failed.
Converged/disabled/verify_failed/DR-OFF = no-op. PBSDRHEAL_ONLY_HOST scopes a
supervised rollout. Scenarios A-F + all six red-proofs verified. No agent change.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HEPuEwyyGDJdcsXLFsTWJn
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