The most revealing result in this Research OS stretch came after the earlier simulator gates looked promising. I had moved toward durable authority records and replay. Four tamper-detection cases passed, but the case that should reopen a valid, untampered log failed: the decoder rejected an EDGE record. A system meant to remember why an action was allowed could not yet trust its own ordinary restart path.
That failure only makes sense in the context of what I was trying to build. I had started with a Rust semantic simulator to make capabilities, policy, audit, and storage rules explicit before treating any of it as kernel architecture. Reviews kept narrowing the trusted boundary. Possessing a handle was not enough; the capability graph and policy both had to permit an operation, and audit had to account for its result. The replay failure showed that even with those rules designed, the serialization contract still had to survive a real round trip. The last assistant response proposed a decoder repair; this record does not contain a successful rerun.
The simulator’s pieces
The proposed Rust workspace separated the responsibilities into small crates:
| Crate | Role |
|---|---|
ros-manifest |
Parse component declarations |
ros-capgraph |
Hold capability relationships and revocation state |
ros-policy |
Decide whether an operation or delegation is permitted |
ros-audit |
Record and reconstruct authority events |
ros-store |
Model objects, collections, snapshots, and rollback |
ros-launcher |
Model component lifecycle and launch behavior |
ros-cli |
Inspect the simulator |
The initial workspace demo combined an editor, an indexer, and a malicious-component fixture. It was intended to exercise grants, denied reads or writes, revocation, rollback, audit reconstruction, and inspection of the authority graph.
A handle was not enough
One design correction made the authorization rule explicit:
operation_allowed = capgraph_allow AND policy_allowPossessing a raw handle was not supposed to authorize an operation by itself. The graph had to validate the authority, policy had to allow its use, and the result had to enter the audit model.
Other reviews exposed less obvious edges. Who was allowed to revoke a grant? Did revoking one branch also affect siblings? Could inspecting one workspace reveal another workspace’s metadata? Did an editor permitted to modify a document also have permission to create a new one?
Those questions became test gates rather than being left as broad design intentions.
Audit failure could not leave an unaudited mutation
A particularly important correction concerned ordering. A draft permitted state to change before audit success. The revised design introduced reservation, commit, and rollback semantics so an audit failure would not leave an operation half-accounted for.
Later revisions clarified all-or-nothing audit batches, bootstrap insertion rules, capability type and scope compatibility, and which success events should be emitted. These were semantic requirements inside the simulator, not proof of kernel isolation or tamper-proof storage.
I posted Cargo and Git output throughout Stage 0. The closure material described executable gates for capability correctness, delegation, revocation, storage rollback, audit atomicity, default-deny manifests, simulated crash containment, and workspace inspection. A final consistency-audit commit was recorded.
Stage 1A reached a real replay problem
The next work examined a durable authority substrate: workspace identity, audit-log replay, store restart, rollback, and reconstruction after restarting. This phase also suffered a damaged local checkout. I reported replacing it from a supplied repository ZIP and later completing another repair and commit.
The final test output in this selected history was not a clean finish. Four tamper-detection cases passed, but the test that should reopen a valid, untampered hash-chained log failed. The decoder rejected an EDGE record.
The assistant diagnosed a partial update: the encoder now appended a hash, while the decoder still treated that last field as ordinary record data. Its proposed repair split the final hash from the body, checked the chain, parsed the body, and verified the final root record. No successful rerun after that repair is shown here.
The Stage 1A experiment ended at a precise break: a valid hash-chained log failed to reopen because the decoder treated the added hash as ordinary EDGE data. The proposed repair was clear, but the conversation stopped before a passing rerun. That is where this simulator’s recorded progress stood.