docs: #106 CLOSED — gate-4 verification + running-artifact attribution correction

Move #106 to Recently closed (user-verified collision + solid walls;
probe-verified 49 clean transitions incl. south A9B4->A9B3 at y=-0.19,
east A9B3->AAB3 at x=192.2, and room-by-room tracking through the
originally-failing A9B3 cottage). Records the three adjacent
pre-existing bugs the gate runs surfaced and fixed (legacy Resolve bare
ids, bogus-indoor-claim recovery, entry-hold streaming deadlock).

Correct the capture doc's attribution: the outdoor running distortion
was NOT fully the stale anchor — gate 4 shows residual background-color
screen artifacts persist with a correctly-following anchor. The
residual is the render §4 flap family (render digest), not membership.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/research/2026-06-09-105-capture-analysis-membership-landblock-pin.md

@@ -32,6 +32,11 @@ capture: entered a cottage and "EVERYTHING disappears, like I'm standing outside
    `0x0031`), so the whole view is built from a wrong anchor. The capture REFUTES flood-level
    causes outdoors: in all 26,960 outdoor-root frames, `outPolys=1` and `vis=1` with zero
    exceptions.
+   > ⚠️ **Attribution PARTIALLY corrected post-fix (2026-06-09, #106 gate 4):** with #106
+   > fixed and the anchor following correctly (49 clean transitions incl. cross-block),
+   > the user still reports transient parts-of-screen-turn-background-color artifacts while
+   > running and at cottage/room enter–exit. The stale anchor amplified the artifact but was
+   > not its only cause — the residual is the §4 flap family (render digest), not membership.
 5. **The §4 indoor flap is unchanged and separate:** vis oscillation exists only under indoor
    roots (520 changes, longest 9 consecutive flips, cells 0x013F/0x0143/0x0150/0x0171) plus
    ~11 one-to-three-frame OUT↔IN root blips at doorways (e.g. lines 31704..31713) — the known