formal specification as a concept: lease broker, specified twice - #1
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One system -- a bearer-possession lease broker -- as both a TLC-checked TLA+ model (exhaustive over a small instance, counterexample traces for free) and a Lean 4 development (same invariants proved unbounded, no sorries). The poisoned-registry attack appears in both: found as a trace by TLC, constructed as a theorem in Lean. CI runs both checkers, and asserts the misconfig model still fails. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01MiMEjDQfptQujTLmycEcvH
The org's actions policy rejects actions/checkout@v4 and
actions/setup-java@v4 outright ("all actions must be pinned to a
full-length commit SHA"), so both CI jobs died before checkout.
checkout uses the SHA infra's own privileged lanes pin (v5);
setup-java's v4 tag resolved via ls-remote (v4.9.1).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016ADT43QLqz4YogASqyCvQ5
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The verified proofs seed, landing on the factory-made repo (infra#240, factory block infra#241).
One system — a bearer-possession lease broker — as both a TLC-checked TLA+ model (exhaustive over a small instance, counterexample traces for free) and a Lean 4 development (same invariants proved unbounded, no
sorrys). The poisoned-registry attack appears in both: found as a trace by TLC, constructed as a theorem in Lean (misconfig_attack). CI runs both checkers and asserts the misconfig model still fails — the attack staying findable is itself a checked property.Content is the verified seed commit
164ece0byte-for-byte (rebased onto the auto-init'dmain; the stub README resolved in favor of the seed's).🤖 Generated with Claude Code
https://claude.ai/code/session_016ADT43QLqz4YogASqyCvQ5
Generated by Claude Code