Add Data Inventory template (Layer 1) with Snapshot Date and Data Range fields

docs/templates/data-inventory-template.md

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+# Data Inventory – [Client Name]
+
+**Status:** Draft / Human Review / Locked  
+**Last Updated:** YYYY-MM-DD  
+**Reviewed by:**  
+
+## Purpose
+Establish ground truth of the client's digital presence. No analysis or diagnosis — only what exists, where it lives, and verification status.
+
+Nothing in this document describes threats, severity, or required actions.
+
+## Data Sources
+
+### Google Business Profile
+- **Access Status:** Owner access / Pending / Denied
+- **Data Range Available:** e.g. 2025-07 to 2026-07 / Partial (Jan 2026 only) / None
+- **Snapshot Date:** YYYY-MM-DD
+- **Verification Tier:** Tier 1 / Tier 2
+- **Notes / Gaps:**
+- **Snapshot Location:** `data/clients/[client]/raw/gmb/`
+
+### Website
+- **Access Status:** Public / Login required
+- **Data Range Available:** N/A
+- **Snapshot Date:** YYYY-MM-DD
+- **Verification Tier:** Tier 1 / Tier 2
+- **Notes / Gaps:**
+- **Snapshot Location:** `data/clients/[client]/raw/website/`
+
+### Primary Social (Instagram / Facebook / other)
+- **Access Status:** Owner access / Pending / Denied
+- **Data Range Available:**
+- **Snapshot Date:** YYYY-MM-DD
+- **Verification Tier:** Tier 1 / Tier 2
+- **Notes / Gaps:**
+- **Snapshot Location:** `data/clients/[client]/raw/social/`
+
+### Booking / Scheduling System
+- **Access Status:** Access granted / Pending / Denied
+- **Data Range Available:**
+- **Snapshot Date:** YYYY-MM-DD
+- **Verification Tier:** Tier 1 / Tier 2
+- **Notes / Gaps:**
+- **Snapshot Location:** `data/clients/[client]/raw/booking/`
+
+### Other (specify)
+- **Access Status:**
+- **Data Range Available:**
+- **Snapshot Date:** YYYY-MM-DD
+- **Verification Tier:**
+- **Notes / Gaps:**
+- **Snapshot Location:**
+
+## Summary of Gaps / Blockers
+- 
+
+## Human Review Gate
+- [ ] All accessible sources have been ingested or snapshot taken
+- [ ] Every source has a Verification Tier tag (Tier 1 or Tier 2)
+- [ ] Snapshot date is recorded for every source
+- [ ] Data gaps and missing history are documented in Notes/Gaps
+- [ ] Inventory is accurate to the best of our current knowledge
+
+Once this gate is signed off, the inventory is **Locked** and Layer 2 (Threat Diagnosis) may begin.
+
+The agent must never treat a source with a missing or outdated snapshot date as current data.
+
+**Reviewer sign-off:** _________________ Date: _________