qvm: recover exit-rule prefix timing

docs/FINDINGS.md

@@ -1460,3 +1460,6 @@ RE-802–811 adds opt-in coherent memory, original string/scoreboard control flo
 
 
 **RE-820:** Rust matches original clipping counts, visible bytes, warning thresholds and alternating buffer counters across56 wrapper cases. [Evidence](research/RUST_FORMAT_WRAPPERS.md).
+
+
+**RE-821:** 7805 first handles blocked state, then a pending1000/5000 transition using signed wrapped elapsed time; only a ready transition clears the pending global. [Evidence](research/QVM_EXIT_PREFIX.md).

docs/PROVISIONAL_TODO.md

@@ -1470,3 +1470,6 @@ RE-819: 70386 warns at count>=capacity, returns the clipped count and copies a g
 
 
 RE-820: Rust matches original clipping counts, visible bytes, warning thresholds and alternating buffer counters across56 wrapper cases. Full runtime completion remains open. [Evidence](research/RUST_FORMAT_WRAPPERS.md).
+
+
+RE-821: 7805 first handles blocked state, then a pending1000/5000 transition using signed wrapped elapsed time; only a ready transition clears the pending global. Full runtime completion remains open. [Evidence](research/QVM_EXIT_PREFIX.md).

docs/RESEARCH_LEDGER.md

@@ -1768,3 +1768,8 @@ Rust scoreboard construction now uses recovered decimal/format semantics, replac
 ## 2026-10-27 — RE-820 Rust bounded and rotating formatter wrapper contracts
 
 Rust matches original clipping counts, visible bytes, warning thresholds and alternating buffer counters across56 wrapper cases. Focused `cargo xtask test-group rust-format-wrappers` passes (11 Python tests); selected reports regenerate twice deterministically, with storage, documentation links and whitespace guards. Full suite deferred to task ten. Original assets unchanged; source fixtures do not establish complete native/runtime parity.
+
+
+## 2026-10-27 — RE-821 Original exit-rule prefix priority pending clocks and transition gates
+
+7805 first handles blocked state, then a pending1000/5000 transition using signed wrapped elapsed time; only a ready transition clears the pending global. Focused `cargo xtask test-group exit-prefix` passes (5 Python tests); selected reports regenerate twice deterministically, with storage, documentation links and whitespace guards. Full suite deferred to task ten. Original assets unchanged; source fixtures do not establish complete native/runtime parity.

docs/REVERSE_ENGINEERING_TODO.md

@@ -1510,3 +1510,6 @@ Purpose: turn the supplied installation into an evidence-backed specification of
 
 
 - [x] RE-820 Rust bounded and rotating formatter wrapper contracts ([evidence](research/RUST_FORMAT_WRAPPERS.md)).
+
+
+- [x] RE-821 Original exit-rule prefix priority pending clocks and transition gates ([evidence](research/QVM_EXIT_PREFIX.md)).

docs/research/QVM_EXIT_PREFIX.md

@@ -0,0 +1,7 @@
+# Original exit-rule prefix priority pending clocks and transition gates
+
+RE-821. Reproduce with `python3 scripts/analyze_qvm_exit_prefix.py`; focused validation: `cargo xtask test-group exit-prefix`. [Machine report](qvm-exit-prefix.json).
+
+144 source-prefix fixtures cover nonzero/negative blocked values, empty/pending clocks, signed timestamp boundaries and exact threshold sides. Independent tests verify captured child request order, global writes and the stop before mode-specific rules.7525/6825 effects, mode-specific exits and full publication integration remain open.
+
+Original executable/native runtime and complete Linux/macOS Rust/Bevy/Solari acceptance remain unverified.

docs/research/README.md

@@ -1050,3 +1050,6 @@ The extension collector adds five focused tests for native tail calls, command-r
 
 
 [RE-820: Rust bounded and rotating formatter wrapper contracts](RUST_FORMAT_WRAPPERS.md).
+
+
+[RE-821: Original exit-rule prefix priority pending clocks and transition gates](QVM_EXIT_PREFIX.md).

docs/research/qvm-exit-prefix.json

@@ -0,0 +1,3209 @@
+{
+  "limits": "7805 blocked/pending-transition prefix only. Actual source priority, signed wrapped elapsed and1000/5000 threshold/clear behavior through7857 or8416.7525/6825 children captured. Mode-specific exit rules, transition effects and full ranking publication integration remain open.",
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+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
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+      "input": {
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+        "pending": -2147483648,
+        "slow": 1
+      },
+      "next": "return_boundary",
+      "pending_after": 2147483648,
+      "requests": [
+        {
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+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
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+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
+      "global_changes": [],
+      "input": {
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+        "pending": 2147483647,
+        "slow": 1
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+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
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+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
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+      "input": {
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+        "pending": 2147483647,
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+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
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+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
+      "global_changes": [],
+      "input": {
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+        "pending": 2147483647,
+        "slow": 1
+      },
+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
+          "arguments": {},
+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
+      "global_changes": [],
+      "input": {
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+        "now": 2147484647,
+        "pending": 2147483647,
+        "slow": 1
+      },
+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
+          "arguments": {},
+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
+      "global_changes": [],
+      "input": {
+        "blocked": 1,
+        "now": 2147488646,
+        "pending": 2147483647,
+        "slow": 1
+      },
+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
+          "arguments": {},
+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    },
+    {
+      "execution": {
+        "stop": 8416,
+        "trace_length": 15,
+        "trace_sha256": "c59d8b83dec82a544553d5c04634b0311be35cb40ec44b55c4fd97689c3f11a2"
+      },
+      "global_changes": [],
+      "input": {
+        "blocked": 1,
+        "now": 2147488647,
+        "pending": 2147483647,
+        "slow": 1
+      },
+      "next": "return_boundary",
+      "pending_after": 2147483647,
+      "requests": [
+        {
+          "arguments": {},
+          "native_effect_not_executed": true,
+          "target": 7525
+        }
+      ]
+    }
+  ],
+  "sha256": "a589351dfe517470a1b121dd2164714987d9e4577bf00c6486e1540035d7a79d",
+  "source": {
+    "archive": "zUrT43_qvm.pk3",
+    "archive_sha256": "b59bf0c5bedf11d50e0edd220da7eade96de40601e98ae14c54c819047df0796",
+    "member": {
+      "bytes": 983300,
+      "comment_hex": "",
+      "compressed_bytes": 246560,
+      "compression": 8,
+      "crc32": "98ea1768",
+      "create_system": 0,
+      "create_version": 63,
+      "date_time": [
+        2018,
+        6,
+        18,
+        22,
+        11,
+        50
+      ],
+      "directory": false,
+      "entry_index": 2,
+      "external_attr": 32,
+      "extra_hex": "0a0020000000000001001800d1e24e974007d40116dcbf962f1fd20116dcbf962f1fd201",
+      "extract_version": 20,
+      "flags": 0,
+      "header_offset": 221309,
+      "internal_attr": 0,
+      "occurrence": 0,
+      "output": "assets/extracted/zUrT43_qvm.pk3/members/000002/vm/qagame.qvm",
+      "path": "vm/qagame.qvm",
+      "sha256": "a589351dfe517470a1b121dd2164714987d9e4577bf00c6486e1540035d7a79d",
+      "type": "member",
+      "volume": 0
+    }
+  }
+}

docs/research/qvm-resumer-audit.json

@@ -1796,6 +1796,200 @@
       "repeated_calls_opt_in": true,
       "repeated_calls_setting": "literal_true"
     },
+    {
+      "backward_conditional_branches": [
+        7944,
+        8212,
+        8375
+      ],
+      "calls": [
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7817,
+          "stores_result": false,
+          "target": 7525
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7853,
+          "stores_result": false,
+          "target": 6825
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7903,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": 52,
+          "instruction": 7922,
+          "stores_result": true,
+          "target": 70458
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7930,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": 48,
+          "instruction": 7947,
+          "stores_result": true,
+          "target": 7662
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7980,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 7985,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8091,
+          "stores_result": false,
+          "target": 7259
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": 60,
+          "instruction": 8102,
+          "stores_result": true,
+          "target": 70458
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8110,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": 68,
+          "instruction": 8159,
+          "stores_result": true,
+          "target": 277695
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8218,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8223,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8271,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8276,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8290,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8295,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8342,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": 52,
+          "instruction": 8353,
+          "stores_result": true,
+          "target": 70458
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8361,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8390,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8395,
+          "stores_result": false,
+          "target": 7367
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8409,
+          "stores_result": false,
+          "target": -18
+        },
+        {
+          "dynamic_store_requires_review": false,
+          "implicit_local_offset": null,
+          "instruction": 8414,
+          "stores_result": false,
+          "target": 7367
+        }
+      ],
+      "explicit_result_offsets": null,
+      "helper": "qvm_trace_support.resume",
+      "line": 12,
+      "literal_range": [
+        7806,
+        8416
+      ],
+      "path": "scripts/analyze_qvm_exit_prefix.py",
+      "repeated_calls_opt_in": true,
+      "repeated_calls_setting": "literal_true"
+    },
     {
       "backward_conditional_branches": [],
       "calls": [
@@ -9764,8 +9958,8 @@
     }
   },
   "summary": {
-    "call_expressions": 196,
-    "files": 150,
+    "call_expressions": 197,
+    "files": 151,
     "legacy_expressions": 158,
     "nonliteral_ranges": 24,
     "unresolved_mode_expressions": 3

scripts/analyze_qvm_exit_prefix.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python3
+import itertools
+from pathlib import Path
+from qvm_research_support import source
+from qvm_health_effects_support import H
+from qvm_trace_support import resume,captured
+from analyze_qvm import write_json
+E=H+0x700000
+
+def probe(ins,blocked,pending,slow,now):
+    m={34999596:blocked,34999592:pending,34081612:slow,34992532:now};before=dict(m);requests=[]
+    m,e=resume(ins,7806,8416,m,E,handlers={7525:captured(7525,requests),6825:captured(6825,requests)},boundaries=[7857],repeated_calls=True)
+    changes=[{'address':a,'before':v,'after':m[a]} for a,v in before.items() if m[a]!=v]
+    return {'input':{'blocked':blocked,'pending':pending,'slow':slow,'now':now},'pending_after':m[34999592]&0xffffffff,'next':'mode_branch' if e['stop']==7857 else 'return_boundary','requests':requests,'global_changes':changes,'execution':{k:e[k] for k in ['stop','trace_length','trace_sha256']}}
+
+def main():
+    q,raw,h,ins=source();rows=[]
+    for blocked,slow,pending,delta in itertools.product([-1,0,1],[0,1],[0,10000,-2147483648,2147483647],[-1,0,999,1000,4999,5000]):rows.append(probe(ins,blocked,pending,slow,(pending+delta)&0xffffffff))
+    write_json(Path('docs/research/qvm-exit-prefix.json'),{'source':q['source'],'sha256':q['sha256'],'probes':rows,'limits':'7805 blocked/pending-transition prefix only. Actual source priority, signed wrapped elapsed and1000/5000 threshold/clear behavior through7857 or8416.7525/6825 children captured. Mode-specific exit rules, transition effects and full ranking publication integration remain open.'})
+if __name__=='__main__':main()

scripts/test_qvm_exit_prefix.py

@@ -0,0 +1,20 @@
+import json,unittest
+from pathlib import Path
+
+def expected(a):
+    pending=a['pending']&0xffffffff
+    if a['blocked']:return pending,'return_boundary',[7525]
+    if pending==0:return pending,'mode_branch',[]
+    elapsed=((a['now']-a['pending']+2**31)%2**32)-2**31
+    if elapsed<(5000 if a['slow'] else 1000):return pending,'return_boundary',[]
+    return 0,'return_boundary',[6825]
+class ExitPrefixTests(unittest.TestCase):
+    def test_independent_priority_wrapped_clock_threshold_and_clear(self):
+        ps=json.loads(Path('docs/research/qvm-exit-prefix.json').read_text())['probes'];self.assertEqual(len(ps),144)
+        for p in ps:
+            after,next,targets=expected(p['input']);self.assertEqual((p['pending_after'],p['next'],[r['target'] for r in p['requests']]),(after,next,targets));self.assertTrue(all(not r['arguments'] for r in p['requests']));self.assertEqual(p['execution']['stop'],7857 if next=='mode_branch' else 8416)
+    def test_only_ready_transition_clears_global(self):
+        for p in json.loads(Path('docs/research/qvm-exit-prefix.json').read_text())['probes']:
+            changes=p['global_changes'];targets=[r['target'] for r in p['requests']]
+            self.assertEqual(changes,[{'address':34999592,'before':p['input']['pending'],'after':0}] if targets==[6825] else [])
+if __name__=='__main__':unittest.main()

xtask/checks.tsv

@@ -2038,3 +2038,7 @@ report	scripts/analyze_rust_format_wrappers.py	docs/research/rust-format-wrapper
 edge	docs/research/rust-format-wrappers.json	scripts/test_rust_format_wrappers.py
 group	rust-format-wrappers	scripts/analyze_rust_format_wrappers.py
 edge	scripts/analyze_rust_format_wrappers.py	scripts/analyze_qvm_resumer_audit.py
+report	scripts/analyze_qvm_exit_prefix.py	docs/research/qvm-exit-prefix.json
+edge	docs/research/qvm-exit-prefix.json	scripts/test_qvm_exit_prefix.py
+group	exit-prefix	scripts/analyze_qvm_exit_prefix.py
+edge	scripts/analyze_qvm_exit_prefix.py	scripts/analyze_qvm_resumer_audit.py