readConfig/readSettings/readJson across all CLI tool settings routes used
JSON.parse() but only caught ENOENT, re-throwing SyntaxError on any
corrupted or JSONC-formatted config file. The API would return 500, which
the UI misinterpreted as "tool not installed."
This patch:
- strips trailing commas before parsing (handles JSONC from opencode, etc.)
- returns null on any parse error instead of re-throwing, so the UI shows
"installed but not configured" (accurate) instead of "not installed"
- applies the same fix to all 8 affected routes: opencode, openclaw, kilo,
droid, cowork, copilot, claude, and cline
Co-authored-by: Cursor <cursoragent@cursor.com>
