Document deprecated session start files

Created deprecation notice for 5 obsolete session documents.
All replaced by single authoritative SESSION-HANDOFF-PROTOCOL.md.

Per Fresh Claude Review: Session doc consolidation priority #1.

Date: 2026-02-16

docs/archive/DEPRECATED-SESSION-DOCS.md

@@ -0,0 +1,77 @@
+# DEPRECATED SESSION DOCUMENTATION
+
+**Date Deprecated:** February 16, 2026  
+**Reason:** Consolidation - replaced by single authoritative document
+
+---
+
+## ⚠️ DO NOT USE THESE DOCUMENTS
+
+The following session-related documents have been **DEPRECATED** and replaced by:
+
+**✅ AUTHORITATIVE SOURCE:** `/SESSION-HANDOFF-PROTOCOL.md` (repository root)
+
+---
+
+## Deprecated Documents
+
+### 1. SESSION-START-PROMPT.md
+**Location:** `docs/core/SESSION-START-PROMPT.md`  
+**Replaced by:** SESSION-HANDOFF-PROTOCOL.md  
+**Status:** Archived
+
+### 2. CORRECTED-SESSION-START-PROMPT.md
+**Location:** `docs/core/CORRECTED-SESSION-START-PROMPT.md`  
+**Replaced by:** SESSION-HANDOFF-PROTOCOL.md  
+**Status:** Archived  
+**Note:** Name suggests there was an "incorrect" version - this caused confusion
+
+### 3. SESSION-QUICK-START.md
+**Location:** `docs/core/SESSION-QUICK-START.md`  
+**Replaced by:** SESSION-HANDOFF-PROTOCOL.md (has Quick Reference section)  
+**Status:** Archived
+
+### 4. session-handoff-template.md
+**Location:** `docs/core/session-handoff-template.md`  
+**Purpose:** Template for creating session handoffs  
+**Status:** May keep as template, but not authoritative source  
+**Use:** Only if creating NEW handoff procedures
+
+### 5. session-handoff.md
+**Location:** `docs/core/session-handoff.md`  
+**Replaced by:** SESSION-HANDOFF-PROTOCOL.md  
+**Status:** Archived
+
+---
+
+## Why This Change?
+
+**Problem Identified (Fresh Claude Review #2):**
+> "Five different session start documents with overlapping but not identical guidance. Unclear which is authoritative. Claude instances may read different versions and get inconsistent instructions."
+
+**Solution:**
+- **ONE** authoritative document: `/SESSION-HANDOFF-PROTOCOL.md`
+- Clear header stating it's authoritative
+- All other session docs archived
+- DOCUMENT-INDEX updated to reference only authoritative source
+
+---
+
+## What to Do If You Find References
+
+If you encounter references to deprecated session docs:
+1. Update reference to point to `/SESSION-HANDOFF-PROTOCOL.md`
+2. Note the location of the outdated reference
+3. Update documentation to use authoritative source
+
+---
+
+## Archive Location
+
+Deprecated documents moved to: `docs/archive/deprecated-session-docs/`
+
+Original files preserved for historical reference but clearly marked as obsolete.
+
+---
+
+**Fire + Frost + Foundation = Where Love Builds Legacy** 💙🔥❄️