diff --git a/src/basic_memory/cli/commands/project.py b/src/basic_memory/cli/commands/project.py
index 0173073a0..73a069ec1 100644
--- a/src/basic_memory/cli/commands/project.py
+++ b/src/basic_memory/cli/commands/project.py
@@ -1184,8 +1184,13 @@ def set_cloud(
     config.set_project_mode(name, ProjectMode.CLOUD)
     if resolved_workspace_id:
         config.projects[name].workspace_id = resolved_workspace_id
-    # Clear local path: source-of-truth for this project is now the cloud
+    # Clear the local path and sync metadata: the source of truth for this
+    # project is now the cloud. A leftover local_sync_path would read as a local
+    # copy and let reconciliation recreate the row this cutover just dropped.
     config.projects[name].path = ""
+    config.projects[name].local_sync_path = None
+    config.projects[name].bisync_initialized = False
+    config.projects[name].last_sync = None
     config_manager.save_config(config)
 
     console.print(f"[green]Project '{name}' set to cloud mode[/green]")
diff --git a/src/basic_memory/deps/db.py b/src/basic_memory/deps/db.py
index daecb107c..a24a365c9 100644
--- a/src/basic_memory/deps/db.py
+++ b/src/basic_memory/deps/db.py
@@ -44,6 +44,13 @@ async def get_engine_factory(
 
     app_config = resolve_container().config
     engine, session_maker = await db.get_or_create_db(app_config.database_path)
+    # Deferred import for the same reason as resolve_container above: the
+    # services layer is reached through api.app -> routers -> deps.
+    from basic_memory.services.initialization import reconcile_projects_with_config_once
+
+    # No server lifespan ran initialize_app() for this process, so seed
+    # config.json's projects into the database here (#1334).
+    await reconcile_projects_with_config_once(app_config)
     return engine, session_maker
 
 
diff --git a/src/basic_memory/services/initialization.py b/src/basic_memory/services/initialization.py
index c25965874..1864e3926 100644
--- a/src/basic_memory/services/initialization.py
+++ b/src/basic_memory/services/initialization.py
@@ -146,9 +146,12 @@ async def initialize_database(app_config: BasicMemoryConfig) -> None:
         raise
 
 
-async def reconcile_projects_with_config(app_config: BasicMemoryConfig):
+async def reconcile_projects_with_config(app_config: BasicMemoryConfig) -> bool:
     """Ensure all projects in config.json exist in the projects table and vice versa.
 
+    Returns True when synchronization completed, False when it failed (the
+    failure is logged; startup continues either way).
+
     This uses the ProjectService's synchronize_projects method to ensure bidirectional
     synchronization between the configuration file and the database.
 
@@ -171,10 +174,41 @@ async def reconcile_projects_with_config(app_config: BasicMemoryConfig):
     project_service = ProjectService(repository=project_repository, session_maker=session_maker)
     try:
         await project_service.synchronize_projects()
-        logger.info("Projects successfully reconciled between config and database")
     except Exception as e:
         logger.error(f"Error during project synchronization: {e}")
         logger.info("Continuing with initialization despite synchronization error")
+        return False
+    logger.info("Projects successfully reconciled between config and database")
+    return True
+
+
+# Database paths this process has already reconciled config projects into.
+_reconciled_database_paths: set[Path] = set()
+
+
+async def reconcile_projects_with_config_once(app_config: BasicMemoryConfig) -> None:
+    """Reconcile config projects into the database the first time a process opens it.
+
+    Trigger: a request opens the local database outside a server lifespan — the
+    one-shot CLI and the MCP local flow drive the API over an in-process ASGI
+    transport, so nothing else seeds config.json's projects into a fresh database.
+    Why: initialize_app() only runs for the API/MCP servers and a few CLI
+    commands, so a CLI-only fresh install had `main` in config.json but no
+    projects row, and every default-project command failed while
+    `project add main` refused with "already exists" (#1334, regression of #974).
+    Outcome: the same reconciliation the servers run, once per process; cloud and
+    stateless deployments stay untouched, matching initialize_app().
+    """
+    if app_config.skip_local_initialization:
+        return
+    database_path = Path(app_config.database_path)
+    if database_path in _reconciled_database_paths:
+        return
+    # Only a completed reconciliation retires this path; a transient failure
+    # (logged inside) leaves the next request to try again rather than pinning
+    # a long-lived MCP process to an unseeded database.
+    if await reconcile_projects_with_config(app_config):
+        _reconciled_database_paths.add(database_path)
 
 
 # Strong references for fire-and-forget startup index tasks; the event loop
diff --git a/src/basic_memory/services/project_service.py b/src/basic_memory/services/project_service.py
index d866bbd70..336744238 100644
--- a/src/basic_memory/services/project_service.py
+++ b/src/basic_memory/services/project_service.py
@@ -39,6 +39,7 @@
     WATCH_STATUS_JSON,
     ConfigManager,
     ProjectEntry,
+    ProjectMode,
     get_project_config,
     ProjectConfig,
 )
@@ -50,6 +51,26 @@
 type ProjectSearchRepositoryFactory = Callable[[int], SearchRepository]
 
 
+def _is_cloud_only(entry: ProjectEntry) -> bool:
+    """Whether a config entry routes to the cloud with no local copy of the notes.
+
+    A local copy is recorded in ``local_sync_path``; older entries recorded it only
+    in ``path``, which ``_require_local_sync_path`` still honors — but only when
+    absolute. A relative value on a cloud entry is the remote slug
+    (``config_migrations``), and, like ``is_locally_syncable``, it must never be
+    taken for a local directory: a row for it would resolve against the process
+    cwd. ``set-cloud`` clears both fields; ``add --cloud`` without ``--local-path``
+    writes neither.
+    """
+    if entry.mode != ProjectMode.CLOUD:
+        return False
+    # Same rule as _require_local_sync_path: the sync copy is local_sync_path,
+    # falling back to path, and only an absolute one is a directory on this
+    # machine. ProjectEntry accepts a relative local_sync_path, so check it too.
+    local_copy = entry.local_sync_path or entry.path
+    return not (local_copy and os.path.isabs(local_copy))
+
+
 class ProjectService:
     """Service for managing Basic Memory projects."""
 
@@ -521,6 +542,11 @@ async def synchronize_projects(self) -> None:  # pragma: no cover
             if normalized_name != name:
                 logger.info(f"Normalizing project name in config: '{name}' -> '{normalized_name}'")
                 config_updated = True
+                # The default must follow its key: config validation resets a
+                # default that no longer matches a project key to the first
+                # project, which would silently replace a cloud default.
+                if config.default_project == name:
+                    config.default_project = normalized_name
 
             updated_config[normalized_name] = entry
 
@@ -538,8 +564,25 @@ async def synchronize_projects(self) -> None:  # pragma: no cover
             db_projects = await self.repository.get_active_projects(session)
             db_projects_by_permalink = {p.permalink: p for p in db_projects}
 
+            # Trigger: a cloud-only entry — cloud mode with no local sync copy
+            #          (`add --cloud` without --local-path, or a `set-cloud`
+            #          cutover, which clears the sync metadata).
+            # Why: set-cloud deliberately deletes the local row so the project's
+            #      configured state is purely cloud; a local row for it would undo
+            #      that cutover and admit the project to local indexing/watching
+            #      (#1334 review). A cloud project with a local sync path still
+            #      needs its row for local-side operations.
+            # Outcome: cloud-only entries are absent from the local-row set — never
+            #          created, and a stale row left by an older reconciliation is
+            #          removed like any other row config no longer claims.
+            local_entries = {
+                name: entry
+                for name, entry in config_project_names.items()
+                if not _is_cloud_only(entry)
+            }
+
             # Add projects that exist in config but not in DB
-            for name, entry in config_project_names.items():
+            for name, entry in local_entries.items():
                 if name not in db_projects_by_permalink:
                     logger.info(f"Adding project '{name}' to database")
                     project_data = {
@@ -555,7 +598,7 @@ async def synchronize_projects(self) -> None:  # pragma: no cover
             # Config is the source of truth - if a project was deleted from config,
             # it should be deleted from DB too (fixes issue #193)
             for name, project in db_projects_by_permalink.items():
-                if name not in config_project_names:
+                if name not in local_entries:
                     logger.info(
                         f"Removing project '{name}' from database (deleted from config, source of truth)"
                     )
@@ -572,8 +615,17 @@ async def synchronize_projects(self) -> None:  # pragma: no cover
             # Make sure default project is synchronized between config and database
             db_default = await self.repository.get_default_project(session)
             config_default = self.config_manager.default_project
+            config_default_entry = (
+                config_project_names.get(config_default) if config_default else None
+            )
 
-            if db_default and db_default.name != config_default:
+            # Trigger: the configured default is cloud-only (no local sync copy).
+            # Why: it has no local row by design, so the database default is only
+            #      the local fallback and must not overwrite the user's choice.
+            # Outcome: config keeps the cloud default; the DB default stays local.
+            if config_default_entry is not None and _is_cloud_only(config_default_entry):
+                pass
+            elif db_default and db_default.name != config_default:
                 # Update config to match DB default
                 logger.info(f"Updating default project in config to '{db_default.name}'")
                 self.config_manager.set_default_project(db_default.name)
diff --git a/tests/cli/test_fresh_install.py b/tests/cli/test_fresh_install.py
new file mode 100644
index 000000000..bf344bcbb
--- /dev/null
+++ b/tests/cli/test_fresh_install.py
@@ -0,0 +1,56 @@
+"""Regression tests for a fresh, CLI-only install (#1334, #974)."""
+
+import os
+import subprocess
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).parent.parent.parent
+
+
+def _pristine_env(home: Path) -> dict[str, str]:
+    """A profile with no Basic Memory state, and none inherited from the developer or CI."""
+    env = {
+        key: value
+        for key, value in os.environ.items()
+        if not key.startswith("BASIC_MEMORY_") and key != "PYTEST_CURRENT_TEST"
+    }
+    env.update(
+        HOME=str(home),
+        USERPROFILE=str(home),
+        BASIC_MEMORY_HOME=str(home / "basic-memory"),
+        BASIC_MEMORY_CONFIG_DIR=str(home / ".basic-memory"),
+        BASIC_MEMORY_NO_PROMOS="1",
+    )
+    return env
+
+
+def _bm(args: list[str], env: dict[str, str]) -> subprocess.CompletedProcess[str]:
+    return subprocess.run(
+        ["uv", "run", "bm", *args],
+        capture_output=True,
+        text=True,
+        env=env,
+        # Guards a wedged install, not a performance budget: first run creates
+        # the database and runs migrations.
+        timeout=90,
+        cwd=PROJECT_ROOT,
+    )
+
+
+def test_fresh_cli_install_can_use_the_bootstrapped_default_project(tmp_path):
+    """The auto-created `main` project must exist in the database, not just config.json.
+
+    A fresh install seeds `main` into config.json. Only the API/MCP server lifespan
+    used to reconcile that into the projects table, so a CLI-only flow hit
+    "Project not found: 'main'" on every default-project command while
+    `project add main` refused with "already exists" (#1334).
+    """
+    home = tmp_path / "home"
+    home.mkdir()
+    env = _pristine_env(home)
+
+    status = _bm(["status"], env)
+
+    assert status.returncode == 0, status.stderr
+    assert "Project not found" not in status.stdout + status.stderr
+    assert "main" in status.stdout
diff --git a/tests/cli/test_project_set_cloud_local.py b/tests/cli/test_project_set_cloud_local.py
index a00cf8b63..e627902c9 100644
--- a/tests/cli/test_project_set_cloud_local.py
+++ b/tests/cli/test_project_set_cloud_local.py
@@ -383,3 +383,25 @@ def test_set_cloud_uses_default_workspace_when_no_flag(self, runner, mock_config
         config_module._CONFIG_SIZE = None
         updated_data = json.loads(mock_config.read_text())
         assert updated_data["projects"]["research"]["workspace_id"] == "global-default-tenant-id"
+
+
+def test_set_cloud_clears_sync_metadata(runner, mock_config, tmp_path):
+    """A cutover leaves no local_sync_path behind, so reconciliation cannot recreate the row.
+
+    `add --cloud --local-path` entries carry a sync path; set-cloud blanked only
+    `path`, and a surviving local_sync_path read as a local copy (#1334 review).
+    """
+    config = json.loads(mock_config.read_text())
+    config["projects"]["research"].update(
+        {"local_sync_path": str(tmp_path / "research"), "bisync_initialized": True}
+    )
+    mock_config.write_text(json.dumps(config, indent=2))
+
+    result = runner.invoke(app, ["project", "set-cloud", "research"])
+
+    assert result.exit_code == 0, result.stdout
+    entry = json.loads(mock_config.read_text())["projects"]["research"]
+    assert entry["mode"] == "cloud"
+    assert entry["path"] == ""
+    assert entry["local_sync_path"] is None
+    assert entry["bisync_initialized"] is False
diff --git a/tests/mcp/test_async_client_modes.py b/tests/mcp/test_async_client_modes.py
index 70235fd0c..f09d86984 100644
--- a/tests/mcp/test_async_client_modes.py
+++ b/tests/mcp/test_async_client_modes.py
@@ -7,6 +7,7 @@
 from basic_memory.cli.auth import CLIAuth
 from basic_memory.config import ProjectMode
 from basic_memory.mcp import async_client as async_client_module
+from basic_memory.services import initialization
 from basic_memory.mcp.async_client import (
     get_client,
     get_cloud_control_plane_client,
@@ -78,7 +79,13 @@ async def fake_get_or_create_db(db_path):
         calls.append(db_path)
         return engine, session_maker
 
+    async def skip_project_reconciliation(app_config):
+        """The engine/session maker here are stand-ins; reconciliation needs a real database."""
+
     monkeypatch.setattr(db, "get_or_create_db", fake_get_or_create_db)
+    monkeypatch.setattr(
+        initialization, "reconcile_projects_with_config_once", skip_project_reconciliation
+    )
 
     try:
         async with get_client() as client:
@@ -238,7 +245,13 @@ async def fake_get_or_create_db(db_path):
         calls.append(db_path)
         return engine, session_maker
 
+    async def skip_project_reconciliation(app_config):
+        """The engine/session maker here are stand-ins; reconciliation needs a real database."""
+
     monkeypatch.setattr(db, "get_or_create_db", fake_get_or_create_db)
+    monkeypatch.setattr(
+        initialization, "reconcile_projects_with_config_once", skip_project_reconciliation
+    )
 
     first_context = get_client()
     second_context = get_client()
diff --git a/tests/mcp/test_project_context.py b/tests/mcp/test_project_context.py
index c6474e5b6..431b4ffa3 100644
--- a/tests/mcp/test_project_context.py
+++ b/tests/mcp/test_project_context.py
@@ -2407,6 +2407,9 @@ class TestGetProjectClientRoutingOrder:
     @pytest.mark.asyncio
     async def test_local_flag_skips_workspace_resolution(self, config_manager, monkeypatch):
         """--local flag should never trigger workspace resolution, even for cloud projects."""
+        import httpx
+
+        import basic_memory.mcp.project_context as project_context
         from basic_memory.mcp.project_context import get_project_client
         from basic_memory.config import ProjectEntry, ProjectMode
 
@@ -2422,14 +2425,18 @@ async def test_local_flag_skips_workspace_resolution(self, config_manager, monke
         monkeypatch.setenv("BASIC_MEMORY_FORCE_LOCAL", "true")
         monkeypatch.delenv("BASIC_MEMORY_FORCE_CLOUD", raising=False)
 
-        # Should not raise "Multiple workspaces" — it should skip workspace entirely
-        # It will fail at project validation (no API running), which proves routing worked
-        with pytest.raises(Exception) as exc_info:
-            async with get_project_client(project="cloud-proj"):
-                pass
+        # Any workspace lookup is the failure being guarded against.
+        async def fail_on_workspace_lookup(*args, **kwargs):
+            raise AssertionError("--local must not resolve workspaces")
+
+        monkeypatch.setattr(project_context, "get_available_workspaces", fail_on_workspace_lookup)
 
-        # The error should NOT be about workspaces
-        assert "workspace" not in str(exc_info.value).lower()
+        # This entry is the legacy cloud-with-local-path shape, so the local ASGI
+        # client seeds it into the database (#1334) and validation succeeds on the
+        # local route; any workspace lookup would have tripped the guard above.
+        async with get_project_client(project="cloud-proj") as (client, active_project):
+            assert isinstance(client._transport, httpx.ASGITransport)  # pyright: ignore[reportPrivateUsage]
+            assert active_project.name == "cloud-proj"
 
     @pytest.mark.asyncio
     async def test_local_route_clears_stale_cached_workspace(self, config_manager, monkeypatch):
diff --git a/tests/services/test_initialization_reconcile_once.py b/tests/services/test_initialization_reconcile_once.py
new file mode 100644
index 000000000..584b9bfaf
--- /dev/null
+++ b/tests/services/test_initialization_reconcile_once.py
@@ -0,0 +1,64 @@
+"""The once-per-process project reconciliation used by the CLI's API path (#1334)."""
+
+import pytest
+
+from basic_memory.services import initialization
+
+
+@pytest.mark.asyncio
+async def test_reconcile_projects_with_config_once_runs_once_per_database(app_config, monkeypatch):
+    """Every local ASGI request hits the dependency; only the first may reconcile."""
+    calls = []
+
+    async def fake_reconcile(config):
+        calls.append(config)
+        return True
+
+    monkeypatch.setattr(initialization, "reconcile_projects_with_config", fake_reconcile)
+    monkeypatch.setattr(initialization, "_reconciled_database_paths", set())
+
+    await initialization.reconcile_projects_with_config_once(app_config)
+    await initialization.reconcile_projects_with_config_once(app_config)
+
+    assert calls == [app_config]
+
+
+@pytest.mark.asyncio
+async def test_reconcile_projects_with_config_once_skips_cloud_deployments(app_config, monkeypatch):
+    """Cloud/stateless deployments own their project rows; reconciling would delete them."""
+    calls = []
+
+    async def fake_reconcile(config):
+        calls.append(config)
+        return True
+
+    monkeypatch.setattr(initialization, "reconcile_projects_with_config", fake_reconcile)
+    monkeypatch.setattr(initialization, "_reconciled_database_paths", set())
+    monkeypatch.setenv("BASIC_MEMORY_CLOUD_MODE", "true")
+    assert app_config.skip_local_initialization
+
+    await initialization.reconcile_projects_with_config_once(app_config)
+
+    assert calls == []
+
+
+@pytest.mark.asyncio
+async def test_reconcile_projects_with_config_once_retries_after_a_failed_attempt(
+    app_config, monkeypatch
+):
+    """A transient failure must not pin a long-lived process to an unseeded database."""
+    outcomes = iter([False, True])
+    calls = []
+
+    async def fake_reconcile(config):
+        calls.append(config)
+        return next(outcomes)
+
+    monkeypatch.setattr(initialization, "reconcile_projects_with_config", fake_reconcile)
+    monkeypatch.setattr(initialization, "_reconciled_database_paths", set())
+
+    await initialization.reconcile_projects_with_config_once(app_config)
+    await initialization.reconcile_projects_with_config_once(app_config)
+    await initialization.reconcile_projects_with_config_once(app_config)
+
+    assert calls == [app_config, app_config], "retry once after failure, then stop"
diff --git a/tests/services/test_project_service.py b/tests/services/test_project_service.py
index ac351c8bd..b22d6d21b 100644
--- a/tests/services/test_project_service.py
+++ b/tests/services/test_project_service.py
@@ -1781,3 +1781,166 @@ async def test_add_doctor_project_requires_project_root(project_service: Project
     """Without a configured root there is no nesting problem for doctor to solve."""
     with pytest.raises(ValueError, match="BASIC_MEMORY_PROJECT_ROOT"):
         await project_service.add_doctor_project()
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_skips_cloud_mode_entries(project_service: ProjectService):
+    """A cloud-mode config entry must not get a local projects row (#1334 review).
+
+    `set-cloud` deletes the local row on purpose so the project's configured state
+    is purely cloud. Reconciliation now runs on every CLI process, so recreating the
+    row here would undo that cutover each time.
+    """
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-cloud"] = ProjectEntry(path="", mode=ProjectMode.CLOUD)
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-cloud") is None
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_keeps_a_cloud_default_in_config(
+    project_service: ProjectService,
+):
+    """The database default is only the local fallback; a cloud default must survive."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-cloud"] = ProjectEntry(path="", mode=ProjectMode.CLOUD)
+    config.default_project = "research-cloud"
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert config_manager.load_config().default_project == "research-cloud"
+    db_default = await _get_default_project(project_service)
+    assert db_default is not None and db_default.name != "research-cloud"
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_keeps_a_row_for_cloud_projects_with_a_local_sync_copy(
+    project_service: ProjectService, tmp_path
+):
+    """`add --cloud --local-path` entries stay cloud-routed but still need their local row."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    sync_dir = tmp_path / "research-sync"
+    sync_dir.mkdir()
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-synced"] = ProjectEntry(
+        path=str(sync_dir), mode=ProjectMode.CLOUD, local_sync_path=str(sync_dir)
+    )
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-synced") is not None
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_removes_a_stale_row_for_a_cloud_only_entry(
+    project_service: ProjectService, tmp_path
+):
+    """A row an older reconciliation recreated for a cut-over project converges away."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-cloud"] = ProjectEntry(path="", mode=ProjectMode.CLOUD)
+    config_manager.save_config(config)
+    await _create_project(
+        project_service,
+        {
+            "name": "research-cloud",
+            "path": str(tmp_path / "stale-research"),
+            "permalink": "research-cloud",
+            "is_active": True,
+        },
+    )
+    assert await _get_project(project_service, "research-cloud") is not None
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-cloud") is None
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_keeps_a_cloud_default_written_in_display_form(
+    project_service: ProjectService,
+):
+    """`default_project: Research Cloud` must match the normalized `research-cloud` key."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["Research Cloud"] = ProjectEntry(path="", mode=ProjectMode.CLOUD)
+    config.default_project = "Research Cloud"
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    # Keys are normalized on sync; the default must follow its key, not fall
+    # back to the first local project.
+    assert config_manager.load_config().default_project == "research-cloud"
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_keeps_a_row_for_a_legacy_path_only_cloud_copy(
+    project_service: ProjectService, tmp_path
+):
+    """Older entries record the local copy only in `path`; that is still a local copy."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    sync_dir = tmp_path / "legacy-sync"
+    sync_dir.mkdir()
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-legacy"] = ProjectEntry(path=str(sync_dir), mode=ProjectMode.CLOUD)
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-legacy") is not None
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_treats_a_relative_cloud_path_as_the_remote_slug(
+    project_service: ProjectService,
+):
+    """A cloud entry whose `path` is a slug like `research` has no local copy."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-slug"] = ProjectEntry(path="research", mode=ProjectMode.CLOUD)
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-slug") is None
+
+
+@pytest.mark.asyncio
+async def test_synchronize_projects_treats_a_relative_local_sync_path_as_no_local_copy(
+    project_service: ProjectService,
+):
+    """`_require_local_sync_path` rejects a relative sync path; reconciliation must agree."""
+    from basic_memory.config import ProjectEntry, ProjectMode
+
+    config_manager = project_service.config_manager
+    config = config_manager.load_config()
+    config.projects["research-rel"] = ProjectEntry(
+        path="", mode=ProjectMode.CLOUD, local_sync_path="research"
+    )
+    config_manager.save_config(config)
+
+    await project_service.synchronize_projects()
+
+    assert await _get_project(project_service, "research-rel") is None