User-defined skills (~/.claude/skills/) not appearing in slash-command autocomplete

Environment

• Claude Code v2.1.92
• Model: Opus 4.6 (1M context)
• OS: Linux (CentOS 7)

Issue

Built-in slash commands (e.g. /help, /skills) autocomplete when typing /, but user-defined skills installed under ~/.claude/skills/ (e.g. analyze-testbench, compare-testbench) do NOT appear in the autocomplete list.

Repro

1. Create a skill at ~/.claude/skills/analyze-testbench/SKILL.md
2. Start claude
3. Type /anal and press Tab

Expected

/analyze-testbench appears as an autocomplete suggestion.

Actual

No suggestion shown. Typing the full command /analyze-testbench still invokes the skill correctly — only autocomplete is missing.

Note

Some environments also report /skills isn't available in this environment, which suggests the skills subsystem may be gated per-mode.