# Phase C+8 — broad-impact analysis

KeResetEvent is hot like KeSetEvent — called many times before idx=102164.
Predecessor (C+7) advanced the main chain by +6 due to a stale-comment
test; C+8 advances by +33 — modest but ~5x larger. Each event between
102164 and 102197 is a continuation inside the same critical-section /
content-enumeration block in the boot sequence.

## Pre-C+8 (post-C+7) tid=6->1 first-divergence

idx=102164 -- kernel.return KeResetEvent canary=1 ours=0

## Post-C+8 tid=6->1 first-divergence

idx=102197 -- kernel.return XamContentCreateEnumerator canary=1317 ours=0
  - 1317 = 0x525 = X_ERROR_NO_CONTENT (returned when no save data exists)
  - ours returning 0 implies our stub either succeeds blindly or doesn't
    implement the "no content" path

## Resolved divergences

  idx=102164  KeResetEvent return_value=0 -> 1

## Advanced divergences

  tid=6->1 first-divergence position 102164 -> 102197

## Persisted divergences

  tid=12->7 idx=2  KeWaitForSingleObject canary=258 ours=0
  tid=14->9 idx=39 XAudio cluster vs RtlEnterCS

## NEW divergences (consequence of the C+8 fix)

  None visible -- the new first-divergence at idx=102197 was already
  the second-divergence pre-fix (hidden behind 102164). Now exposed.

## Sister-chain stability

All 5 sister chains (tid=4, 7, 12, 14, 15) at their identical prior
matched-prefix lengths. No regression to lockstep-mapped sub-runs.

## Coarse stable-digest stability

50M `c6d895829b4611964978990ae1cb8a6a` identical to C+7 baseline.
Coarse digest is field-coarse at this stage; it doesn't yet count
distinct event sequences inside the matched-window expansion.

## Test count

Pre: 156. Post: 160 (+4). No regressions.