* Move marketplace plugin updates from hook to /update-agnes-plugins skill
The SessionStart hook used to run `agnes refresh-marketplace --quiet`,
which performed a full fetch+reset+install cycle on every Claude Code
session start. That work was invisible to the user, slowed session
startup, and was unrecoverable interactively when something failed.
Split the responsibility:
- `agnes refresh-marketplace --check` is a new lightweight detector:
`git fetch` only, compares local HEAD with remote FETCH_HEAD, emits
a Claude Code hook JSON message pointing the user at
`/update-agnes-plugins` when the marketplace has changes. No reset,
no plugin install/update side effects.
- `/update-agnes-plugins` is a new slash command (installed by
`agnes init` into `<workspace>/.claude/commands/`) that runs
`agnes refresh-marketplace` (default chatty path). Output streams
into the Claude Code transcript so the user sees install/update
progress and can react to errors interactively.
- The SessionStart hook now runs `--check`. Existing workspaces
auto-upgrade on next `agnes init` (substring marker matches both
the old `--quiet` entry and the new `--check` one).
BREAKING: `agnes refresh-marketplace --quiet` is removed. Old hooks
calling it silent-noop after the CLI upgrade (the hook's `|| true`
swallows the unknown-flag error) until re-init rewrites them.
* Point marketplace 'Added to your stack' hint at /update-agnes-plugins
The post-install green panel on plugin and skill/agent detail pages
referenced the SessionStart auto-install path and a shell-prompt
`agnes refresh-marketplace` invocation. With the hook now being
detect-only, that copy was misleading — the actual install path is
the new slash command.
Condensed to a single instruction: "Open a new Claude Code session
and run:" followed by `/update-agnes-plugins` in a copy-chip.
JS clipboard string updated to match.
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Co-authored-by: Minas Arustamyan <arustamyan.minas@gmail.com>
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