fix: honor ssh_key_path config in SessionKeyManager and config.local.…

[cchervitz]

Problem

Setting ssh_key_path in .claudesync/config.local.json has no effect.
SessionKeyManager is instantiated without any arguments, and _find_ssh_key()
only searches ~/.ssh/ for hardcoded filenames (id_ed25519, id_ecdsa).

Users with custom-named keys (e.g., ~/.ssh/my_claude_key) are prompted to
enter a path on every run, even with a valid config entry.

Fix

• SessionKeyManager.__init__ now accepts an optional ssh_key_path parameter
• _find_ssh_key() checks the configured path first:
  1. Direct file path → use immediately
  2. Directory → search it alongside ~/.ssh/
  3. Default ~/.ssh/ fallback with standard key names
  4. Prompt user as last resort (with improved guidance)
• FileConfigManager now passes self.get("ssh_key_path") when
  instantiating SessionKeyManager
• Improved prompt message clarifies that keys should be named id_ed25519
  if not using a custom ssh_key_path config

Files Changed

• src/claudesync/session_key_manager.py
• src/claudesync/configmanager/file_config_manager.py

[jahwag]

checks are failing

[cchervitz]

Sorry! My 1st PR. Didn't see that it required flake & black checks. I think everything should pass now!

[jahwag]

Hey, nice fix! This solves a real annoyance reported in #82. Couple things before merging:

The _find_ssh_key method has a bunch of new branches now but no tests. Would be
great to add at least a few covering the main paths (configured file, configured
dir, default fallback).

Also the new user-facing messages use print() but the class already has
self.logger.

Minor thing: the check on line 47 that tries to guess whether a non-existent
path is a file or directory (configured.suffix or
configured.name.startswith("id_")) could misfire for keys with unusual names.
Probably better to just always treat it as a missing file if it doesn't exist.

One more thing: commits need to be signed for this repo. Could you rebase with
signed commits?

[cchervitz]

Thanks for the great suggestions. I signed my files, cleaned up that duplicate comment, added some tests, used self-logger, and agreed with your simplified approach on checking file vs directory. Let me know if it looks good to you!