[Fix] Write the req_to_token page tail so rows stay valid over whole pages - #35401

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hnyls2002 wants to merge 13 commits into

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lsyin/page-tail-write

Commits on Aug 18, 2026

write req_to_token page tails; widen row headroom for ps>1
hnyls2002
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5a62b18
trim page tail UT to spot-check plus random oracle
hnyls2002
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dde60ed
trim comments in page tail write
hnyls2002
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dd3cc9d

Commits on Aug 19, 2026

write page tail on PD decode prealloc
hnyls2002
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3a52511
merge main
hnyls2002
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64b3f6c
rewrite page tail UT oracle around allocator layout
hnyls2002
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0b87b08
fix broadcasting in page tail UT assertion
hnyls2002
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e932355
publish whole pages at decode page open; gather out_cache_loc from the row
hnyls2002
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54d7e55
publish swa page mapping at page open and extend tail
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c491ef5
merge main
hnyls2002
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fdf1b19
flatten page tail UT assertions with locals
hnyls2002
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cef55ad
Merge branch 'main' into lsyin/page-tail-write
hnyls2002
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2726900
single kv_allocated_len site in alloc_for_decode
hnyls2002
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2024abe