feat(simulation): error handling and recovery — panic supervision, state hash, structured errors (#85)

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Protocol v17: add state_hash (desync detection) and sim_errors
(structured error reporting) to ObserverSnapshot. Add SimError,
SimErrorKind, SimErrorBuffer types. Wrap main loop app.update() in
catch_unwind — on panic, send a final SimError snapshot before exit.
Report recoverable deserialization errors to client via SimErrorBuffer.
Compute per-tick state hash from player position + NPC count + tick.
Update all test fixtures and golden files for protocol v17.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

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This commit is contained in:

jpmschweitzer

2026-02-27 17:46:27 +01:00

co-authored by Claude Opus 4.6

parent c2cae1f618

commit d31ac1cc70

23 changed files with 557 additions and 7 deletions

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client/tests/fixtures/msgpack/snapshot_empty.msgpack

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