docs(session-handoff): pwsh/powershell choice + restart-after-edit caveat [v0.3.2]

Two findings from live-hook e2e smoke 2026-05-25 on this Windows machine:

(1) README snippet was pwsh-only — PS 7 Core isn't on stock Windows. PS 5.1
(`powershell`) is always present and the hook script runs cleanly under both.
README now leads with `powershell` and notes the `pwsh` swap for PS 7+ users.

(2) Missing caveat that hooks load at Claude Code session start — mid-session
edits to ~/.claude/settings.json don't activate the hook until CC restart.
Without this note user would think the hook is broken after applying the
snippet (standalone smoke would pass but live in-session wouldn't fire).
Added explicit restart instruction + verification recipe.

Also: dist/session-handoff.skill now tracked (was missing since promotion —
inconsistent with other dist/*.skill artifacts that ship in repo).

PATCH bump 0.3.1 → 0.3.2 (docs-only, no behavioral change in hook or skill).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

skills/session-handoff/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: session-handoff
-version: 0.3.1
+version: 0.3.2
 description: "Sliding handoff between CC sessions via .tasks/NEXT_SESSION.md. Read on session start: orient agent, ask user before action. Write on session-end phrase or substantive commit. Session-end phrases: «завершаем сессию», «сворачиваемся», «закругляемся», «wrap up session», «end session», «we're done for now». Trigger-line in CLAUDE.md: `session handoff: read on start, write on end`. Skip task-zone phrases: «закрываем эту таску», «pause», «отбой», «разбегаемся»."
 ---