refactor: rename cli-v2 → cli, archive legacy cli, plus broker-side grants + auto-migrate

- apps/cli/ is now the canonical CLI (was apps/cli-v2/).
- apps/cli/ legacy v0 archived as branch 'legacy-cli-archive' and tag
  'cli-v0-legacy-final' before deletion; git history preserves it too.
- .github/workflows/release-cli.yml paths updated.
- pnpm-lock.yaml regenerated.

Broker-side peer-grant enforcement (spec: 2026-04-15-per-peer-capabilities):
- 0020_peer-grants.sql adds peer_grants jsonb + GIN index on mesh.member.
- handleSend in broker fetches recipient grant maps once per send, drops
  messages silently when sender lacks the required capability.
- POST /cli/mesh/:slug/grants to update from CLI; broker_messages_dropped_by_grant_total metric.
- CLI grant/revoke/block now mirror to broker via syncToBroker.

Auto-migrate on broker startup:
- apps/broker/src/migrate.ts runs drizzle migrate with pg_advisory_lock
  before the HTTP server binds. Exits non-zero on failure so Coolify
  healthcheck fails closed.
- Dockerfile copies packages/db/migrations into /app/migrations.
- postgres 3.4.5 added as direct broker dep.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/cli/src/locales/en.ts

@@ -0,0 +1,10 @@
+export const en = {
+  welcome: "Welcome to claudemesh",
+  signed_in_as: "Signed in as {name}",
+  mesh_created: 'Created "{slug}"',
+  invite_copied: "Invite URL copied to clipboard",
+  logout_success: "Signed out",
+  error_network: "Could not reach {url}. Check your connection.",
+  error_auth: "Authentication failed. Run \`claudemesh login\` to sign in.",
+  error_not_found: "{resource} not found",
+} as const;

apps/cli/src/locales/index.ts

@@ -0,0 +1 @@
+export { en } from "./en.js";