refactor(linkedin-studio): S31c descriptive-%-scrub — platform-norm percentages asserted as fact -> SSOT

24 edits / 12 files (+26/-26). Unsourced platform/algorithm/audience percentages reconciled to
SSOT vocabulary (figure/proportion/multiplier unverified). Catalog + new sibling clusters
(64% follow-up x5, wrong-window 70% x4, Stage-2 6-10% x2) + borderlines (70% retention, 70%
mobile) + the ~3% save-worthy straggler (surfaced, not silent). The SSOT-sourced ~70% reach
figure is KEPT; only the wrong window corrected (60min/1h -> first 15-30 min). Sourced/computed
benchmarks kept (Buffer 178%/247%, Socialinsider 11%). KEPT C1: ~45% AI-comment figure (already
hedged correlational/medium-confidence). Gate 81/0/0 exit 0, counts 29/19/26 + v0.5.0.

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

agents/engagement-coach.md

@@ -49,7 +49,7 @@ Help creators:
 - Substantive comments (15+ words) outweigh short ones and rank above plain reactions — but below saves and shares (no fixed comment-vs-reshare multiplier)
 - Posts with 15+ engagements in first hour unlock 2nd/3rd degree distribution
 - Your comments on others' posts expose you to their audience
-- Commenting within 30 minutes of a post = 64% more follow-up engagement on your comment
+- Commenting within 30 minutes of a post tends to earn more follow-up engagement on your comment (multiplier unverified)
 
 **The insight:** Time spent engaging often returns MORE than time spent creating.
 
@@ -72,13 +72,13 @@ Help creators:
 
 ### 2. First Hour Strategy
 
-**Critical context:** First 60 minutes determine 70% of total reach
+**Critical context:** The first 15–30 minutes decide ~70% of total reach (golden window 60–90 min; see `references/algorithm-signals-reference.md`)
 
 **The sequence:**
 1. **Post** at optimal time for your audience
 2. **Wait 10 minutes** — let organic engagement start
 3. **Add value comment** on your own post (extend the conversation, add resource)
-4. **Respond to EVERY comment** within 30 minutes (64% more follow-ups)
+4. **Respond to EVERY comment** within 30 minutes (more follow-ups — figure unverified)
 5. **Add 2-3 more self-comments** over 90 minutes (spark discussion)
 
 **Velocity targets:**
@@ -196,7 +196,7 @@ Structure: Connect to their point → Share brief relevant story → Extract the
 
 ### Optimal Comment Windows (CET)
 
-Commenting within 30 minutes of a post's publication = 64% more follow-up engagement on your comment. Early comments get pinned to the top and seen by the largest audience.
+Commenting within 30 minutes of a post's publication tends to earn more follow-up engagement on your comment (figure unverified). Early comments get pinned to the top and seen by the largest audience.
 
 | Time Block | Activity | Why |
 |------------|----------|-----|
@@ -310,7 +310,7 @@ Rate each comment before posting:
 | 0 min | Post goes live | - |
 | 10 min | Add value comment | Spark conversation |
 | 15 min | Check for early comments | Respond immediately |
-| 30 min | Respond to all comments | 64% more follow-ups |
+| 30 min | Respond to all comments | More follow-ups (figure unverified) |
 | 45 min | Add another insight comment | Keep momentum |
 | 60 min | Final engagement check | Lock in reach |
 

agents/post-feedback-monitor.md

@@ -68,8 +68,8 @@ Map the post to its current phase and benchmark against expected performance.
 ### The Five Performance Phases
 
 **Phase 1: The Golden Hour (0-1 hour)**
-- Algorithm decision window — velocity here determines 70% of final reach
-- Post shown to 6-10% of connections (Stage 2 distribution)
+- Algorithm decision window — velocity in the first 15–30 min decides ~70% of final reach
+- Post shown to a small test slice of connections (Stage 2 distribution; proportion unverified)
 - Target: 5+ reactions, 2+ comments in first 60 minutes
 - Critical threshold: 15+ engagements = unlocks 2nd/3rd degree distribution