nmem t save fails on non-ASCII project directories (CJK / Unicode characters)

[moon09300731]

Bug: nmem t save fails on non-ASCII project directories (CJK / Unicode characters)

Environment

• nowledge-mem CLI: 0.8.3
• Claude Code plugin: 0.7.7
• OS: macOS (Darwin 25.4.0)
• Project directory example: ~/Desktop/退役军人查询项目 (contains CJK characters)

Actual behavior

When Claude Code triggers the Stop hook (nmem-hook-save.py --event stop), the script calls:

nmem t save --from claude-code --session-id <sid> --project <cwd>

If cwd contains non-ASCII characters, the save fails with:

{
  "status": "error",
  "error": "Claude Code session directory not found for project: /Users/liangxinyu/Desktop/退役军人查询项目",
  "hint": "Make sure Claude Code has created sessions for this project (expected under /Users/liangxinyu/.claude/projects/-Users-liangxinyu-Desktop-退役军人查询项目)"
}

As a result, nmem t list shows 0 threads — the conversation is never automatically captured.

Root cause

Claude Code sanitizes project directory names when placing transcripts under ~/.claude/projects/. Its algorithm replaces every non-ASCII character with -:

/Users/liangxinyu/Desktop/退役军人查询项目
→ ~/.claude/projects/-Users-liangxinyu-Desktop---------

However, nmem t save only replaces / with -, and expects:

~/.claude/projects/-Users-liangxinyu-Desktop-退役军人查询项目

The mismatch causes the transcript lookup to fail.

Reproduction steps

1. Create a project directory with CJK characters:
   mkdir -p ~/Desktop/中文项目
2. cd ~/Desktop/中文项目
3. Open Claude Code in that directory.
4. Have any conversation (so a transcript .jsonl is generated).
5. Trigger the Stop hook manually (or let Claude Code stop a turn):

   echo '{"session_id":"...","cwd":"/Users/<you>/Desktop/中文项目","transcript_path":"..."}' \
     | python3 ~/.claude/plugins/cache/nowledge-community/nowledge-mem/0.7.7/scripts/nmem-hook-save.py --event stop

6. Observe Claude Code session directory not found for project: ....

Temporary workaround (local patch)

We patched ~/.claude/plugins/cache/nowledge-community/nowledge-mem/0.7.7/scripts/nmem-hook-save.py to:

1. Detect non-ASCII characters in cwd.
2. Create an ASCII symlink alias in the parent directory (e.g., ~/Desktop/-------- → ~/Desktop/中文项目).
3. Pass the alias path to --project, so that nmem's sanitized output (-Users-liangxinyu-Desktop---------) matches Claude Code's actual directory.

Drawbacks:

• Leaves an ASCII-dashed symlink in the parent directory.
• Patch is lost on plugin upgrade (0.7.7 → 0.8.0).

Suggested fix

Option A — Update nmem t save's directory-name sanitization to match Claude Code's behavior (replace non-ASCII characters with -).

Option B — Allow nmem t save to accept an explicit --session-dir or --transcript-dir parameter, bypassing the cwd-based sanitization entirely.

Related files

• Claude Code transcript layout: ~/.claude/projects/<sanitized-name>/<session-id>.jsonl
• Hook script: ~/.claude/plugins/cache/nowledge-community/nowledge-mem/0.7.7/scripts/nmem-hook-save.py