[BUG] Slash command autocomplete: filtering stuck, wrong command executes, crash on mid-sentence / (v2.1.41)

Description

Three related slash command autocomplete bugs, all reproducible on v2.1.41. These appear to be regressions or continuations of issues reported in earlier versions.

Bug 1: Autocomplete filtering doesn't follow typed input

When typing a slash command, the autocomplete stays stuck on the first alphabetical command instead of filtering to matching commands.

Steps to reproduce:

1. Open Claude Code CLI
2. Type / — autocomplete highlights the first command alphabetically (correct)
3. Continue typing to narrow down (e.g., /hel to reach /help)
4. Autocomplete remains stuck on the first command instead of filtering

Bug 2: Wrong command executes regardless of selection

Even when using arrow keys to navigate to a different command, pressing Enter still executes the first command in the list.

Steps to reproduce:

1. Type / to open autocomplete
2. Use arrow keys to navigate to a different command
3. Press Enter
4. The first alphabetical command executes instead of the highlighted one

Bug 3: Crash when typing /{anything} mid-sentence

Typing a forward slash followed by any text in the middle of a sentence causes a crash with:

ERROR (H.description??"").split is not a function.
(In '(H.description??"").split(" ")', '(H.description??"").split' is undefined)

Stack trace:

- <anonymous> (/$bunfs/root/claude:7366:12463)
- map (native:1:11)
- EdA (/$bunfs/root/claude:7366:12343)
- hdA (/$bunfs/root/claude:7366:10547)
- <anonymous> (/$bunfs/root/claude:7367:5646)
- hC (/$bunfs/root/claude:682:29832)
- <anonymous> (/$bunfs/root/claude:177:273010)
- T80 (/$bunfs/root/claude:7367:5574)
- fv8 (/$bunfs/root/claude:7403:5684)
- KD (/$bunfs/root/claude:682:20803)

Root cause: EdA (slash command fuzzy search) → hdA (inline ghost text) calls .split(" ") on a description field that is not a string. The nullish coalescing ?? "" doesn't catch it because the value exists but is not a string type (likely an object from a skill/command metadata).

Environment

• Claude Code Version: v2.1.41
• Model: Opus 4.6 (Claude Max)
• Platform: macOS Darwin 25.3.0
• Installation Method: Native
• Skills installed: 50+ custom skills (global + plugin)

Related Open Issues

• #19107 — Autocomplete always selects wrong command (v2.1.12)
• #18898 — Highlighted command doesn't match typing, Enter runs wrong command (v2.1.12)
• #17853 — description.split TypeError crash on every keystroke (v2.1.6)
• #18117 — $.description.split is not a function crash (macOS)
• #21924 — Malformed YAML in skill description breaks autocomplete (v2.1.25)

Filing this to confirm all three bugs persist in v2.1.41 with the additional mid-sentence crash variant and detailed stack trace.