diff --git a/.gitignore b/.gitignore
index 1ffae9ec9..4b0b0bde8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,9 +8,8 @@ client/export/
 client/reports/
 client/*.import
 
-# Database journal files (transient, not the DB itself)
-db/commonwealth.db-wal
-db/commonwealth.db-shm
+# Database (shared across worktrees at ../settledreach.db, not tracked)
+db/commonwealth.db*
 
 # Python
 __pycache__/
diff --git a/db/commonwealth.db b/db/commonwealth.db
deleted file mode 100644
index 5bad45276..000000000
Binary files a/db/commonwealth.db and /dev/null differ
diff --git a/db/connectors/config.json b/db/connectors/config.json
index fdc1e60e4..d8386e4c2 100644
--- a/db/connectors/config.json
+++ b/db/connectors/config.json
@@ -1,5 +1,5 @@
 {
-  "sqlite_db": "../commonwealth.db",
+
   "qdrant_url": "http://tower-of-joy:6333",
   "ollama_url": "http://tower-of-joy:11434",
   "collection": "commonwealth",
diff --git a/db/connectors/decisions_sync.py b/db/connectors/decisions_sync.py
index 8f55b9e1f..d32df5cc7 100644
--- a/db/connectors/decisions_sync.py
+++ b/db/connectors/decisions_sync.py
@@ -24,8 +24,10 @@ from pathlib import Path
 SCRIPT_DIR = Path(__file__).resolve().parent
 CONFIG_PATH = SCRIPT_DIR / "config.json"
 SCHEMA_PATH = SCRIPT_DIR.parent / "schema.sql"
-REPO_ROOT = SCRIPT_DIR.parent.parent
-DECISIONS_DIR = REPO_ROOT / "decisions"
+WORKTREE_ROOT = SCRIPT_DIR.parent.parent
+DECISIONS_DIR = WORKTREE_ROOT / "decisions"
+# Shared database lives in the parent of all worktrees (three levels up from db/connectors/).
+DB_PATH = (SCRIPT_DIR / ".." / ".." / ".." / "settledreach.db").resolve()
 
 # ---------------------------------------------------------------------------
 # Config / DB (same pattern as sqlite_connector.py)
@@ -36,8 +38,7 @@ def load_config():
     """Load config.json and resolve the SQLite database path."""
     with open(CONFIG_PATH, "r") as f:
         cfg = json.load(f)
-    db_path = (SCRIPT_DIR / cfg["sqlite_db"]).resolve()
-    cfg["sqlite_db_resolved"] = str(db_path)
+    cfg["sqlite_db_resolved"] = str(DB_PATH)
     return cfg
 
 
@@ -193,7 +194,7 @@ def parse_file(filepath):
     and a refs list of (target_id, ref_type, note).
     """
     domain = filepath.stem  # e.g. "architecture" from "architecture.md"
-    rel_path = str(filepath.relative_to(REPO_ROOT))
+    rel_path = str(filepath.relative_to(WORKTREE_ROOT))
     text = filepath.read_text(encoding="utf-8")
     lines = text.split("\n")
 
diff --git a/db/connectors/sqlite_connector.py b/db/connectors/sqlite_connector.py
index dd022b783..d6f609f25 100755
--- a/db/connectors/sqlite_connector.py
+++ b/db/connectors/sqlite_connector.py
@@ -13,7 +13,6 @@ Usage:
 import json
 import os
 import sqlite3
-import subprocess
 import sys
 from pathlib import Path
 
@@ -24,29 +23,15 @@ from pathlib import Path
 SCRIPT_DIR = Path(__file__).resolve().parent
 CONFIG_PATH = SCRIPT_DIR / "config.json"
 SCHEMA_PATH = SCRIPT_DIR.parent / "schema.sql"
-
-
-def _main_worktree():
-    """Find the main worktree root via git's common dir."""
-    try:
-        common = subprocess.check_output(
-            ["git", "rev-parse", "--git-common-dir"],
-            stderr=subprocess.DEVNULL, text=True
-        ).strip()
-        return Path(common).resolve().parent
-    except (subprocess.CalledProcessError, OSError):
-        return SCRIPT_DIR.parent.parent
+# Shared database lives in the parent of all worktrees (three levels up from db/connectors/).
+DB_PATH = (SCRIPT_DIR / ".." / ".." / ".." / "settledreach.db").resolve()
 
 
 def load_config():
     """Load config.json and resolve the SQLite database path."""
     with open(CONFIG_PATH, "r") as f:
         cfg = json.load(f)
-    # Always resolve DB path in the main worktree to avoid
-    # WAL/journal pollution on feature branches causing merge conflicts.
-    main_root = _main_worktree()
-    db_path = (main_root / "db" / "commonwealth.db").resolve()
-    cfg["sqlite_db_resolved"] = str(db_path)
+    cfg["sqlite_db_resolved"] = str(DB_PATH)
     return cfg
 
 
diff --git a/db/connectors/ticket b/db/connectors/ticket
index e8cc80d13..6df8b9d34 100755
--- a/db/connectors/ticket
+++ b/db/connectors/ticket
@@ -25,42 +25,19 @@ All output is JSON on stdout.
 import json
 import os
 import sqlite3
-import subprocess
 import sys
 from pathlib import Path
 
 SCRIPT_DIR = Path(__file__).resolve().parent
 CONFIG_PATH = SCRIPT_DIR / "config.json"
-
-
-def _main_worktree():
-    """Find the main worktree root via git's common dir.
-
-    In a worktree layout like:
-      settled-reach/main/       (main worktree, holds .git/)
-      settled-reach/server/     (linked worktree, .git is a file)
-    git rev-parse --git-common-dir always points to main's .git/,
-    so its parent is the main worktree root.
-    """
-    try:
-        common = subprocess.check_output(
-            ["git", "rev-parse", "--git-common-dir"],
-            stderr=subprocess.DEVNULL, text=True
-        ).strip()
-        return Path(common).resolve().parent
-    except (subprocess.CalledProcessError, OSError):
-        # Fallback: assume script lives in the main worktree
-        return SCRIPT_DIR.parent.parent
+# Shared database lives in the parent of all worktrees (three levels up from db/connectors/).
+DB_PATH = (SCRIPT_DIR / ".." / ".." / ".." / "settledreach.db").resolve()
 
 
 def load_config():
     with open(CONFIG_PATH, "r") as f:
         cfg = json.load(f)
-    # Always resolve DB path in the main worktree to avoid
-    # WAL/journal pollution on feature branches causing merge conflicts.
-    main_root = _main_worktree()
-    db_path = (main_root / "db" / "commonwealth.db").resolve()
-    cfg["sqlite_db_resolved"] = str(db_path)
+    cfg["sqlite_db_resolved"] = str(DB_PATH)
     return cfg