SessionStart hook should also match 'clear' to archive conversations on /clear

[ntroutman]

Problem

When a user runs /clear in Claude Code, the current session is not archived/indexed because the SessionStart hook only matches startup|resume:

"matcher": "startup|resume"

However, /clear fires both:

• SessionEnd with reason clear
• SessionStart with source clear

This means conversations cleared with /clear don't get archived until the next full CLI restart.

Expected Behavior

Running /clear should archive the just-cleared conversation immediately, so it's searchable in the new session.

Proposed Fix

Update hooks/hooks.json to include clear in the matcher:

"matcher": "startup|resume|clear"

This is a one-line change that would make /clear behave consistently with CLI restart for archiving purposes.

Workaround

Users can manually edit their cached plugin at:
~/.claude/plugins/cache/superpowers-marketplace/episodic-memory/<version>/hooks/hooks.json

But this gets overwritten on plugin updates.