Bump all plugin manifests to 6.0.3. This release moves subagent-driven-
development's scratch artifacts (task briefs, implementer reports, review
diffs, progress ledger) from .git/sdd/ — which Claude Code denies agent
writes to — into a self-ignoring working-tree .superpowers/sdd/ dir, and
bumps the brainstorm-server test harness's ws dependency to clear two
dependabot alerts. See RELEASE-NOTES.md.
Clears two dependabot alerts on the test harness's ws dependency:
GHSA-96hv-2xvq-fx4p (high, memory-exhaustion DoS, fixed 8.21.0) and
GHSA-58qx-3vcg-4xpx (medium, uninitialized memory disclosure, fixed
8.20.1). Test-only — the shipped brainstorm server hand-rolls its
WebSocket framing and does not depend on ws. Suite passes (57/57).
The per-worktree workspace test was added but never registered in
run-skill-tests.sh, so it only ran when invoked by hand. Add it to the
fast unit-test array alongside the other pure-shell test.
Also document, in the Durable Progress section, that the ledger now
lives in git-ignored working-tree scratch, so `git clean -fdx` deletes
it — recover from `git log` if that happens.
