qvm: child origin ancestry

docs/ASSET_PIPELINE_TODO.md

@@ -685,3 +685,6 @@ Research progress: RE-668 [report](research/QVM_MODEL_CHILD_SAMPLES.md); remaini
 
 
 Research progress: RE-670 [report](research/QVM_POSED_MODEL.md); remaining native/content/runtime/platform scope stays open.
+
+
+Research progress: RE-671 [report](research/QVM_CHILD_ORIGIN.md); remaining native/content/runtime/platform scope stays open.

docs/FINDINGS.md

@@ -1031,3 +1031,6 @@ Bounded qagame paths recover bomb-plant/inactivity correction requests, direct f
 
 
 **RE-670 — Model ray through actual pose and transform construction:** 144766 now executes complete32254 with live target/client pointers and consumes its actual nine angle outputs in all four transform records. [Evidence](research/QVM_POSED_MODEL.md).
+
+
+**RE-671 — Child sample origin through parent-chain rotations:** 22009 copies sample64..72 into child origin, rotates through every parent basis, then adds only the immediate parent origin; null parent exits before basis composition. [Evidence](research/QVM_CHILD_ORIGIN.md).

docs/PROVISIONAL_TODO.md

@@ -1011,3 +1011,6 @@ RE-659–668 batch complete: [complete finite pose and lifecycle composition](re
 
 
 Research progress: RE-670 [report](research/QVM_POSED_MODEL.md); remaining native/content/runtime/platform scope stays open.
+
+
+Research progress: RE-671 [report](research/QVM_CHILD_ORIGIN.md); remaining native/content/runtime/platform scope stays open.

docs/RESEARCH_LEDGER.md

@@ -1007,3 +1007,8 @@ Grenade construction now runs actual276433 over an explicit pool and inherits th
 ## 2026-10-21 — RE-670 Model ray through actual pose and transform construction (separate task commit)
 
 144766 now executes complete32254 with live target/client pointers and consumes its actual nine angle outputs in all four transform records. 24 fixtures independently check complete pose outputs/state, caller ABI, ray normalization and every word of four88-byte transform records. Full suite: 1141 tests pass. Report regenerates byte-identically (1011044 bytes). Storage/filter, links and whitespace checks pass. No assets/Rust runtime/shared VM evaluator changed; native/reference/legal/full platform scope remains open.
+
+
+## 2026-10-21 — RE-671 Child sample origin through parent-chain rotations (separate task commit)
+
+22009 copies sample64..72 into child origin, rotates through every parent basis, then adds only the immediate parent origin; null parent exits before basis composition. 16 fixtures independently check ordered parent rotations, immediate translation, zero-parent exit and bounded cycle rejection. Full suite: 1145 tests pass. Report regenerates byte-identically (21978 bytes). Storage/filter, links and whitespace checks pass. No assets/Rust runtime/shared VM evaluator changed; native/reference/legal/full platform scope remains open.

docs/REVERSE_ENGINEERING_TODO.md

@@ -1054,3 +1054,6 @@ Purpose: turn the supplied installation into an evidence-backed specification of
 
 
 - [x] RE-670 Model ray through actual pose and transform construction ([report](research/QVM_POSED_MODEL.md)).
+
+
+- [x] RE-671 Child sample origin through parent-chain rotations ([report](research/QVM_CHILD_ORIGIN.md)).

docs/research/QVM_CHILD_ORIGIN.md

@@ -0,0 +1,7 @@
+# Child sample origin through parent-chain rotations
+
+RE-671. Reproduce with `python3 scripts/analyze_qvm_child_origin.py`; check with `python3 scripts/test_qvm_child_origin.py`. The [machine report](qvm-child-origin.json) retains source identity and bounded fixtures.
+
+Actual22010–22321 prepares a sample matrix and copies sample64..72 to child76..84. With no parent96 it jumps directly to the void epilogue. Otherwise it rotates the origin through each linked parent basis in order, then adds the immediate parent translation. Ancestor translations are not separately added in this slice. Explicit finite chains of depth0..3 cover identity and nonuniform turn/scale bases. A harness ownership precheck rejects cyclic supplied chains rather than hanging the bounded evaluator; this is not an invented original-game guard. Basis composition remains the next stage, with no native/intersection calls.
+
+No original executable/full QVM/native collision/physics/rendering executes. Native responses and legal input domains are supplied or unverified where stated; full runtime/macOS/Linux Rust/Bevy/Solari gameplay remains open.

docs/research/README.md

@@ -612,3 +612,6 @@ The extension collector adds five focused tests for native tail calls, command-r
 
 
 [RE-670: Model ray through actual pose and transform construction](QVM_POSED_MODEL.md). Reproduce with `python3 scripts/analyze_qvm_posed_model.py`; check with `python3 scripts/test_qvm_posed_model.py`.
+
+
+[RE-671: Child sample origin through parent-chain rotations](QVM_CHILD_ORIGIN.md). Reproduce with `python3 scripts/analyze_qvm_child_origin.py`; check with `python3 scripts/test_qvm_child_origin.py`.

docs/research/qvm-child-origin.json

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scripts/analyze_qvm_child_origin.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+"""22009 sample origin through bounded parent rotations and immediate translation."""
+import itertools
+from pathlib import Path
+from qvm_research_support import source
+from qvm_trace_support import resume
+from analyze_qvm_acceleration import word
+from analyze_qvm_slide_prefix import vec
+from analyze_qvm import write_json
+LOCAL=0x78140000
+CHILD=LOCAL+4096
+SAMPLE=CHILD+256
+PARENTS=[CHILD+1024+256*j for j in range(3)]
+
+def fixture(depth,kind,origin=(10,20,30)):
+    m={LOCAL+228:CHILD,LOCAL+232:SAMPLE}
+    for o in range(0,112,4):m[CHILD+o]=word(o*.1)
+    m[CHILD+96]=PARENTS[0] if depth else 0
+    for o in range(64,112,4):m[SAMPLE+o]=word((o-64)*.125+1)
+    for j,v in enumerate(origin):m[SAMPLE+64+4*j]=word(v)
+    basis=[[1,0,0],[0,1,0],[0,0,1]] if kind=='identity' else [[0,1,0],[-1,0,0],[0,0,2]]
+    for j,p in enumerate(PARENTS[:depth]):
+        for o in range(0,112,4):m[p+o]=0
+        for row in range(3):
+            for col in range(3):m[p+12+16*row+4*col]=word(basis[row][col])
+        m[p+72]=word(1);m[p+96]=PARENTS[j+1] if j+1<depth else 0
+        for k,v in enumerate([100+j,200+j,300+j]):m[p+76+4*k]=word(v)
+    return m
+
+def origin(ins,m):
+    m=dict(m);before=vec(m,CHILD+76);sample=vec(m,SAMPLE+64);chain=[];p=m[CHILD+96];seen=set()
+    while p:
+        if p in seen:raise ValueError('cyclic fixture parent chain')
+        seen.add(p);chain.append({'pointer':p,'basis':[vec(m,p+12+16*j) for j in range(3)],'origin':vec(m,p+76)});p=m[p+96]
+    m,e=resume(ins,22010,23090,m,LOCAL,boundaries=[22322]);return m,{'initial_origin':before,'sample_origin':sample,'parents':chain,'final_origin':vec(m,CHILD+76),'execution':e}
+
+def main():
+    q,raw,h,ins=source();rows=[]
+    for depth,kind,point in itertools.product([0,1,2,3],['identity','turn-scale'],[(10,20,30),(-.5,1.25,-2)]):rows.append(origin(ins,fixture(depth,kind,point))[1])
+    write_json(Path('docs/research/qvm-child-origin.json'),{'source':q['source'],'sha256':q['sha256'],'probes':rows,'limits':'Actual22010 to22322 or null-parent23090. Parent tables are finite fixtures; cyclic fixture inputs reject before execution. Only source origin path, no intersection or ownership/native effects.'})
+if __name__=='__main__':main()

scripts/test_qvm_child_origin.py

@@ -0,0 +1,29 @@
+import json,unittest
+from pathlib import Path
+from test_qvm_ground import word,n,f
+
+def expected(p):
+    v=list(map(n,p['sample_origin']))
+    for parent in p['parents']:
+        a=[[n(x) for x in row] for row in parent['basis']];v=[f(f(f(v[0]*a[0][j])+f(v[1]*a[1][j]))+f(v[2]*a[2][j])) for j in range(3)]
+    if p['parents']:v=[f(x+n(y)) for x,y in zip(v,p['parents'][0]['origin'])]
+    return list(map(word,v))
+class ChildOriginTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):cls.rows=json.loads(Path('docs/research/qvm-child-origin.json').read_text())['probes']
+    def test_independent_parent_rotation_order_and_translation(self):
+        self.assertEqual(len(self.rows),16)
+        for p in self.rows:self.assertEqual(p['final_origin'],expected(p))
+    def test_null_parent_copies_origin_and_exits(self):
+        for p in self.rows:
+            if not p['parents']:self.assertEqual(p['final_origin'],p['sample_origin']);self.assertEqual(p['execution']['stop'],23090)
+    def test_nonnull_parent_stops_before_basis_product(self):
+        for p in self.rows:
+            if p['parents']:self.assertEqual(p['execution']['stop'],22322)
+            self.assertEqual(p['execution']['calls'],[])
+    def test_cycle_fixture_rejected(self):
+        from analyze_qvm_child_origin import fixture,origin,PARENTS
+        from qvm_research_support import source
+        m=fixture(1,'identity');m[PARENTS[0]+96]=PARENTS[0]
+        with self.assertRaisesRegex(ValueError,'cyclic'):origin(source()[3],m)
+if __name__=='__main__':unittest.main()