fix: prevent DEBUG logs from appearing on CLI stdout

Remove loguru's default handler at the very start of cli/app.py,
before any other imports. This prevents module-level code (like
TemplateLoader.__init__) from logging to stdout during import.

The import chain cli/commands/project.py -> mcp/async_client.py ->
api/app.py -> api/routers/prompt_router.py -> api/template_loader.py
triggers TemplateLoader() instantiation at DEBUG level before
init_cli_logging() can remove the default handler.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

src/basic_memory/cli/app.py

@@ -1,8 +1,15 @@
-from typing import Optional
+# Remove loguru's default handler IMMEDIATELY, before any other imports.
+# This prevents DEBUG logs from appearing on stdout during module-level
+# initialization (e.g., template_loader.TemplateLoader() logs at DEBUG level).
+from loguru import logger
 
-import typer
+logger.remove()
 
-from basic_memory.config import ConfigManager, init_cli_logging
+from typing import Optional  # noqa: E402
+
+import typer  # noqa: E402
+
+from basic_memory.config import ConfigManager, init_cli_logging  # noqa: E402
 
 
 def version_callback(value: bool) -> None: