Slice 13: jotsmith completion (bash/zsh/fish/powershell)

[MaxAnderson95]

What to build

jotsmith completion bash|zsh|fish|powershell — emits the appropriate shell-completion script to stdout via urfave/cli v3's built-in completion support (PRD §6.11).

Acceptance criteria

• Accepts bash, zsh, fish, or powershell as the positional argument
• Emits the script to stdout; nothing to stderr on success; exit 0
• Unknown shell argument → exit 2 with a clear error listing supported shells
• One-line install example per shell appears in the command's --help
• Smoke test runs each shell variant and asserts non-empty stdout output

Blocked by

• Slice 1: Repo scaffolding (Go module, urfave/cli v3 root, global flags, CI, goreleaser) #1 — Repo scaffolding

Originally created in OpenCode session ID: ses_17ca8efd8ffexLcFSysAMDVNBQ

[MaxAnderson95]

Implemented and merged in #14.

Originally created in OpenCode session ID: ses_17c986ef9ffeHc0S3r1wQcmLDT