Publish Chimera GFX source

docs/retroarch/phase-1.0ac-fake-syscall-contract.md

@@ -0,0 +1,24 @@
+# Phase 1.0AC fake-syscall contract
+
+This contract is executable only against the exact built-in fake facade.
+
+| Synthetic operation | Accepted result | Rule |
+|---|---|---|
+| `CREATE_STREAM` | `OK`, `ERROR` | exactly once after a precommitted receipt |
+| `SET_NONBLOCKING` | `OK`, `ERROR` | immediately after create |
+| `START_CONNECT` | `IMMEDIATE`, `PENDING`, `ERROR` | contains no target or address |
+| `WAIT_WRITE` | `READY`, `INTERRUPTED`, `TIMEOUT`, `ERROR` | remaining fake budget is rechecked |
+| `GET_SO_ERROR` | `ZERO`, `NONZERO`, `ERROR` | mandatory after pending readiness |
+| `WRITE_BYTES` | `PROGRESS`, `ZERO`, `ERROR` | positive progress cannot exceed remainder |
+| `WAIT_READ` | `READY`, `INTERRUPTED`, `TIMEOUT`, `ERROR` | deadline wins a simultaneous readiness event |
+| `READ_BYTES` | `PROGRESS`, `EOF`, `ERROR` | EOF is failure; total input is bounded |
+| local close | `OK`, `ERROR` | one call after ownership; none if create failed |
+
+The facade accepts at most 1,024 scripted steps. One step may advance the fake
+clock by at most 60 seconds. These are model bounds, not proposed live values.
+Unused synthetic steps are logically discarded at close; physical memory
+erasure is not proven.
+
+There is deliberately no adapter protocol, inheritance hook, address field,
+network import or live factory. A later phase cannot reinterpret this fake as
+device authorization.