diff --git a/src/trache/cache/db.py b/src/trache/cache/db.py
index 140105e..19ab104 100644
--- a/src/trache/cache/db.py
+++ b/src/trache/cache/db.py
@@ -18,6 +18,13 @@
 DB_FILENAME = "cache.db"
 MIGRATION_SENTINEL = "cache.db.migrated"
 
+_HEX_CHARS = frozenset("0123456789abcdef")
+
+
+def _is_trello_id(s: str) -> bool:
+    """Return True if s looks like a 24-char Trello hex ID."""
+    return len(s) == 24 and all(c in _HEX_CHARS for c in s)
+
 # Migration functions keyed by TARGET version. Each receives an open connection
 # and runs DDL/DML to bring the schema from (key-1) to key. The version row is
 # updated by the runner — migrations must NOT touch schema_version themselves.
@@ -702,8 +709,8 @@ def resolve_card_id(identifier: str, cache_dir: Path) -> str:
             "No board initialised. Run 'trache init' and 'trache pull' first."
         )
 
-    # Full 24-char ID — return as-is
-    if len(identifier) == 24:
+    # Full 24-char hex ID — return as-is
+    if _is_trello_id(identifier):
         return identifier
 
     # Validate UID6 format or temp ID
@@ -755,7 +762,7 @@ def resolve_card_id(identifier: str, cache_dir: Path) -> str:
 
 def resolve_list_id(identifier: str, cache_dir: Path) -> str:
     """Resolve a list ID or name to a full list ID."""
-    if len(identifier) == 24:
+    if _is_trello_id(identifier):
         return identifier
 
     with _connect(cache_dir) as conn:
diff --git a/src/trache/cli/_errors.py b/src/trache/cli/_errors.py
index 93aa5a7..3b575f6 100644
--- a/src/trache/cli/_errors.py
+++ b/src/trache/cli/_errors.py
@@ -22,6 +22,9 @@ def wrapper(*args, **kwargs):
             msg = e.args[0] if e.args else "Requested item not found"
             get_output().error(msg)
             raise typer.Exit(1)
+        except FileNotFoundError as e:
+            get_output().error(str(e))
+            raise typer.Exit(1)
         except ValueError as e:
             get_output().error(str(e))
             raise typer.Exit(1)
diff --git a/src/trache/cli/app.py b/src/trache/cli/app.py
index a38ab68..4828648 100644
--- a/src/trache/cli/app.py
+++ b/src/trache/cli/app.py
@@ -175,6 +175,7 @@ def init(
 
                 try:
                     board_obj = client.get_board(config.board_id)
+                    config.board_id = board_obj.id
                     config.board_name = board_obj.name
                     out.human(f"Board: [bold]{escape(board_obj.name)}[/bold]")
                 except Exception:
diff --git a/tests/test_push.py b/tests/test_push.py
index 7e258bd..4dd1295 100644
--- a/tests/test_push.py
+++ b/tests/test_push.py
@@ -71,7 +71,7 @@ def test_push_added_card(self, tmp_path: Path, sample_card: Card) -> None:
 
         client = MagicMock()
         new_card = Card(
-            id="real_id_from_trello_here",
+            id="aaa111bbb222ccc333ddd444",
             title=sample_card.title,
             list_id=sample_card.list_id,
         )
@@ -221,7 +221,7 @@ def test_push_new_card_with_checklists(self, tmp_path: Path) -> None:
 
         # Mock client
         real_card = Card(
-            id="real_trello_card_id_here", title="Card With Checklist", list_id="list1"
+            id="bbb222ccc333ddd444eee555", title="Card With Checklist", list_id="list1"
         )
         new_cl = Checklist(id="real_cl_1", name="Tasks", card_id=real_card.id)
         item_a = ChecklistItem(id="real_item_a", name="Do thing A")