docs(linkedin-studio): RE-R3d brief + plan — temporal overlay (first-mover + saturation), light-Voyage hardened
R3 slice (b): the rest of hull #3. Two derived brief-time signals — first-mover
(recent + unsurfaced -> ranked up) and saturation (surfaced >= N prior days ->
ranked down) — computed from already-persisted fields. SB1 derived (no schema
bump, SCHEMA_VERSION stays 4); SB2 R3a composite stays the primary sort key, the
overlay is a within-tier cmp refinement. Zero new source/test files; counts
29/19/27; ASSERT floor 111 -> 117.
Three Opus reviewers (scope-guardian / brief-reviewer / plan-critic) folded:
warming badge gated at >=2 (preserves the R3b contract), disagreement ordering
fixture (true RED), saturationAt clamp, ageDays>=0 guard, fresh->neutral rename,
SSOT one-line note, nightly-thresholds known limitation, cite fixes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011vmzxpsFpc8q19LaogAWLD
Kjell Tore Guttormsen
5aa7187243