feat: improve session navigation

tests/unit/test_chat_service.py

@@ -81,6 +81,16 @@ class ChatServiceTests(unittest.TestCase):
             "Gesundheitsfrage",
         )
 
+    def test_manual_title_is_normalized_and_limited(self) -> None:
+        session = self.service.new_session()
+
+        renamed = self.service.rename_session(session.id, "  Mein   Titel  ")
+        shortened = self.service.rename_session(session.id, "x" * 80)
+
+        self.assertEqual(renamed.title, "Mein Titel")
+        self.assertEqual(len(shortened.title), 60)
+        self.assertTrue(shortened.title.endswith("…"))
+
     def test_streaming_response_is_persisted_exactly_once_after_completion(self) -> None:
         provider = StreamingProvider()
         service = ChatService(self.service.store, provider)

tests/unit/test_cli.py

@@ -1,3 +1,4 @@
+import sqlite3
 import tempfile
 import unittest
 from pathlib import Path
@@ -167,6 +168,76 @@ class CliTests(unittest.TestCase):
         )
         self.assertIn("Gemini-Schlüssel vorhanden: ja", output)
 
+    def test_numbered_sessions_load_rename_and_search(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            store = SQLiteSessionStore(Path(directory) / "sessions.sqlite3")
+            service = ChatService(store, _FakeProvider())
+            first = service.new_session()
+            service.send(first.id, "Erste Frage")
+            second = service.new_session()
+            service.send(second.id, "Zweite Frage")
+            shown_before = service.list_sessions()
+            target = shown_before[1]
+            inputs = iter(
+                [
+                    "/sessions",
+                    "/load 2",
+                    "/rename Gefundene Sitzung",
+                    "/search Gefundene",
+                    "/exit",
+                ]
+            )
+            output: list[str] = []
+
+            result = run_chat(
+                service,
+                session_id=first.id,
+                input_fn=lambda _prompt: next(inputs),
+                output=output.append,
+            )
+            renamed_title = store.get_session(target.id).title
+
+        self.assertEqual(result, 0)
+        self.assertTrue(any(line.startswith("1. ") and "Frage" in line for line in output))
+        self.assertIn(f"Sitzung geladen: {target.id}", output)
+        self.assertEqual(renamed_title, "Gefundene Sitzung")
+        self.assertTrue(any("Gefundene Sitzung" in line for line in output))
+
+    def test_load_accepts_unique_prefix_and_rejects_ambiguous_prefix(self) -> None:
+        with tempfile.TemporaryDirectory() as directory:
+            database = Path(directory) / "sessions.sqlite3"
+            store = SQLiteSessionStore(database)
+            service = ChatService(store, _FakeProvider())
+            active = service.new_session()
+            with sqlite3.connect(database) as connection:
+                connection.executemany(
+                    """
+                    INSERT INTO sessions
+                        (id, created_at, updated_at, provider, model, title, last_provider)
+                    VALUES (?, '2026-01-01', '2026-01-01',
+                            'ollama', 'test-model', ?, 'ollama')
+                    """,
+                    (
+                        ("shared-111", "Eins"),
+                        ("shared-222", "Zwei"),
+                        ("unique-333", "Drei"),
+                    ),
+                )
+            connection.close()
+            inputs = iter(["/load unique", "/load shared", "/exit"])
+            output: list[str] = []
+
+            result = run_chat(
+                service,
+                session_id=active.id,
+                input_fn=lambda _prompt: next(inputs),
+                output=output.append,
+            )
+
+        self.assertEqual(result, 0)
+        self.assertIn("Sitzung geladen: unique-333", output)
+        self.assertTrue(any("nicht eindeutig" in line for line in output))
+
     def test_gemini_configuration_defaults_to_no(self) -> None:
         with tempfile.TemporaryDirectory() as directory:
             path = Path(directory) / "javis.toml"

tests/unit/test_sqlite_store.py

@@ -3,14 +3,18 @@ import tempfile
 import unittest
 from pathlib import Path
 
-from javis.memory.sqlite_store import SessionNotFoundError, SQLiteSessionStore
+from javis.memory.sqlite_store import (
+    AmbiguousSessionReferenceError,
+    SessionNotFoundError,
+    SQLiteSessionStore,
+)
 
 
 class SQLiteSessionStoreTests(unittest.TestCase):
     def setUp(self) -> None:
         self.temporary_directory = tempfile.TemporaryDirectory()
-        database = Path(self.temporary_directory.name) / "sessions.sqlite3"
-        self.store = SQLiteSessionStore(database)
+        self.database = Path(self.temporary_directory.name) / "sessions.sqlite3"
+        self.store = SQLiteSessionStore(self.database)
 
     def tearDown(self) -> None:
         self.temporary_directory.cleanup()
@@ -119,6 +123,49 @@ class SQLiteSessionStoreTests(unittest.TestCase):
             ["Alte Nachricht"],
         )
 
+    def test_rename_and_search_only_titles_and_user_messages(self) -> None:
+        first = self.store.create_session("ollama", "test-model")
+        second = self.store.create_session("ollama", "test-model")
+        self.store.rename_session(first.id, "SQLite Hilfe")
+        self.store.append_exchange(first.id, "Transaktion erklären", "Privates Lösungswort")
+        self.store.append_exchange(second.id, "Andere Frage", "Nur SQLite in Antwort")
+
+        self.assertEqual(self.store.get_session(first.id).title, "SQLite Hilfe")
+        self.assertEqual(
+            [session.id for session in self.store.search_sessions("Transaktion")],
+            [first.id],
+        )
+        self.assertEqual(self.store.search_sessions("Lösungswort"), [])
+        self.assertEqual(self.store.search_sessions("SQLite"), [self.store.get_session(first.id)])
+
+    def test_search_treats_sql_wildcards_and_injection_as_plain_text(self) -> None:
+        session = self.store.create_session("ollama", "test-model")
+        self.store.rename_session(session.id, "100% SQLite_Name")
+
+        self.assertEqual(self.store.search_sessions("%")[0].id, session.id)
+        self.assertEqual(self.store.search_sessions("_")[0].id, session.id)
+        self.assertEqual(self.store.search_sessions("' OR 1=1 --"), [])
+
+    def test_unique_and_ambiguous_session_prefixes(self) -> None:
+        with sqlite3.connect(self.database) as connection:
+            connection.executemany(
+                """
+                INSERT INTO sessions
+                    (id, created_at, updated_at, provider, model, title, last_provider)
+                VALUES (?, '2026-01-01', '2026-01-01', 'ollama', 'model', ?, 'ollama')
+                """,
+                (
+                    ("abc111", "Eins"),
+                    ("abc222", "Zwei"),
+                    ("unique333", "Drei"),
+                ),
+            )
+        connection.close()
+
+        self.assertEqual(self.store.resolve_unique_prefix("unique").id, "unique333")
+        with self.assertRaises(AmbiguousSessionReferenceError):
+            self.store.resolve_unique_prefix("abc")
+
 
 if __name__ == "__main__":
     unittest.main()