Fix Claude global MCP config path: ~/.claude/mcp.json → ~/.claude.json

[CheeYuTan]

Summary

• Fixes the Claude global MCP config path in install.sh
• Was writing to ~/.claude/mcp.json but Claude Code expects ~/.claude.json per official docs
• Project-level path (.mcp.json) is unaffected

Fixes #203

Test proof

Verified the fix by inspecting the installer logic:

# Before (line 896):
[ "$SCOPE" = "global" ] && write_mcp_json "$HOME/.claude/mcp.json" || write_mcp_json "$base_dir/.mcp.json"

# After:
[ "$SCOPE" = "global" ] && write_mcp_json "$HOME/.claude.json" || write_mcp_json "$base_dir/.mcp.json"

Test	Result
No other references to ~/.claude/mcp.json in install.sh	PASS — grep returns 0 matches
README references are project-level .claude/mcp.json (correct)	PASS — not affected by this change
Claude docs confirm ~/.claude.json for global scope	PASS — docs link

[calreynolds]

Thanks for looking into this, but the current path (~/.claude/mcp.json) is actually correct — ~/.claude.json is a different config file. Closing to avoid a breaking change.