The ClaudePluginManifest interface was missing the `commands` field
(the standard Claude plugin format), and resolvePluginDir only checked
the legacy `slash-commands` key. Plugins declaring their command path
via `"commands": "..."` silently fell back to the hardcoded
`<plugin-root>/commands/` directory, which doesn't exist for
Claude-format plugins, so no slash commands were ever loaded.
Changes:
- Added `commands?: string` to ClaudePluginManifest.
- Changed resolvePluginDir to accept ReadonlyArray<keyof
ClaudePluginManifest> and iterate in priority order; the first
non-empty match wins.
- loadSlashCommands now passes ["commands", "slash-commands"] so
the canonical Claude plugin key takes precedence over the legacy one.
- Added two regression tests: one covering the `commands` key in
isolation, one verifying its precedence over `slash-commands` when
both fields are present.
Fixes#1076
roboomp
8108394516