Phase 1: investor↔contacts (member_of), system status, thesis seed v1

- entity_resolution: emit member_of relationship edges (contact -> investor),
  so one investor entity owns many contacts (institution) and a HNWI is the N=1
  case; crm_tools.get_investor_contacts + get_entity contacts/member_of; MCP tool.
- seed_synthetic: multi-contact institutions to exercise it (Harbor & Vine = 5).
- server.py: GET /api/system/status (index/entity/thesis/activity health) for an
  in-app status view (no shell needed to verify the index).
- docs/thesis-seed-v1.md: grounded v1 thesis (throughline, 6 pillars, objections,
  per-segment angles, voice) drawn from Ten31's newsletter/site/essays.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/server.py

@@ -1728,6 +1728,8 @@ class CRMHandler(BaseHTTPRequestHandler):
             return self.handle_get_fundraising_activity(user, params)
         if path == '/api/security/status':
             return self.handle_security_status(user)
+        if path == '/api/system/status':
+            return self.handle_system_status(user)
 
         # Users
         if path == '/api/users':
@@ -3428,6 +3430,41 @@ class CRMHandler(BaseHTTPRequestHandler):
         conn.close()
         return self.send_json({"message": "Tag deleted"})
 
+    def handle_system_status(self, user):
+        """System / search-index health for the in-app status view (DB-derived)."""
+        conn = get_db()
+        out = {}
+        try:
+            live = "deleted_at IS NULL"
+            out['canonical_entities'] = {
+                'lp': conn.execute(f"SELECT COUNT(*) FROM canonical_entities WHERE entity_kind='lp' AND {live}").fetchone()[0],
+                'organization': conn.execute(f"SELECT COUNT(*) FROM canonical_entities WHERE entity_kind='organization' AND {live}").fetchone()[0],
+                'person': conn.execute(f"SELECT COUNT(*) FROM canonical_entities WHERE entity_kind='person' AND {live}").fetchone()[0],
+            }
+            out['entity_links'] = conn.execute("SELECT COUNT(*) FROM entity_links").fetchone()[0]
+        except Exception:
+            out['canonical_entities'] = None
+        try:
+            r = conn.execute("SELECT ts, payload FROM interaction_log WHERE action='ingest.sync' ORDER BY ts DESC LIMIT 1").fetchone()
+            out['last_index_sync'] = ({'ts': r['ts'], **json.loads(r['payload'] or '{}')} if r else None)
+        except Exception:
+            out['last_index_sync'] = None
+        try:
+            out['thesis'] = {
+                'lines': conn.execute("SELECT COUNT(*) FROM thesis_lines WHERE deleted_at IS NULL").fetchone()[0],
+                'canonical_versions': conn.execute("SELECT COUNT(*) FROM thesis_versions WHERE status='canonical'").fetchone()[0],
+                'in_review': conn.execute("SELECT COUNT(*) FROM thesis_versions WHERE status='in_review'").fetchone()[0],
+            }
+        except Exception:
+            out['thesis'] = None
+        try:
+            out['recent_activity'] = [dict(r) for r in conn.execute(
+                "SELECT ts, actor_type, actor_id, action FROM interaction_log ORDER BY ts DESC LIMIT 12")]
+        except Exception:
+            out['recent_activity'] = []
+        conn.close()
+        self.send_json({"data": out})
+
     # ─── Architect thesis (Phase 1) ───
     def handle_list_thesis_lines(self, user):
         if thesis_review is None: