* fix(server): support OpenCode 2 in terminal activity plugin
OpenCode 2 rejects V1 hook-object plugins, so the installed
paseo-terminal-activity.js failed to load on every OpenCode 2
session. Ship one definition object that serves both generations:
OpenCode 2 loads id + setup() and ignores the 1.x server entrypoint,
OpenCode 1 loads the same object through server().
* fix(server): preserve terminal activity across plugin generations
* test(server): drain persistence before reload test cleanup
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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
