fix(linkedin-studio): S27 ref-consistency A — "penalty/penalizes" framing → SSOT

Reconcile external-link and topic-relevance reach-loss framing to the algorithm-signals
SSOT across 6 files (10 edits): body links "correlate with lower reach" (LinkedIn denies
an intentional penalty), topic relevance is a positive ranking input with no quantified
off-topic figure. 3 plan-cited lines + 7 same-class siblings surfaced during verify.

Bucket B (link-penalty lines in linkedin-formats.md) folded into S28; Bucket D (other
unsourced reach-coefficients: -68%/-25%/-15-25%/-30-50%/55%) queued as new S30. Engagement-
pod + AI-slop "penalized" framing left intact (officially confirmed). Gate 81/0/0; counts
29/19 unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016qgzo6rxthw7KuxHjn5vyE

references/troubleshooting-guide.md

@@ -12,7 +12,7 @@ Understanding why content fails is as important as knowing what works.
 - Posted at wrong time for YOUR audience
 - No pre-posting engagement (cold start)
 - Topic drift confusing algorithm about your expertise
-- External link penalizing reach
+- External links correlate with lower reach
 - Inconsistent posting breaking topical authority signal
 
 **Solutions:**
@@ -124,7 +124,7 @@ Understanding how to recover from algorithmic suppression is critical for long-t
 1. **Profile-content mismatch (profile/topic mismatch)** - Algorithm validates profile before distributing content
 2. **Topic inconsistency** - Confused algorithm about your expertise
 3. **Engagement pod detection** - Artificial engagement patterns flagged
-4. **External link overuse** - LinkedIn penalizes directing traffic away
+4. **External link overuse** - body links correlate with lower reach (LinkedIn denies an intentional penalty; lead with value)
 5. **Posting frequency gap** - More than 5 days without posting
 6. **Shadow ban from policy violation** - Content flagged for misinformation, spam, or harassment