pi: trim extensions to 10, drop 22 unused
Remove from settings + npm manifest + disk: pi-powerline, pi-bar,
pi-subagents, gentle-engram, pi-prompt-template-model, pi-simplify,
pi-add-dir, pi-slopchop, pi-btw, pi-interactive-shell, pi-terminal-theme,
@plannotator/pi-extension, @tmustier/pi-raw-paste, @tmustier/pi-usage-extension,
@victor-software-house/pi-curated-themes, ponytail, pi-caveman.
Also drop unregistered pi-token-speed, pi-web-access, statusline-pi,
@juanibiapina/pi-powerbar (dup of pi-powerline), context-mode.
Keep: pi-mcp-adapter, pi-intercom, pi-ask-user, @juanibiapina/pi-extension-settings,
@devkade/pi-plan, @tmustier/pi-ralph-wiggum, @danielmeneses/pi-llama-swap,
pi-llama-cpp-stats, firecrawl, autoresearch.
rain
488d613cbb