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/services/state/facade.ts

@@ -0,0 +1,2 @@
+export { getLastUsed, setLastUsed } from "./last-used.js";
+export type { LastUsed } from "./schemas.js";

apps/cli/src/services/state/index.ts

@@ -0,0 +1 @@
+export * from "./facade.js";

apps/cli/src/services/state/last-used.ts

@@ -0,0 +1,20 @@
+import { readFileSync, writeFileSync, existsSync } from "node:fs";
+import { PATHS } from "~/constants/paths.js";
+import { ensureConfigDir } from "~/services/config/facade.js";
+import type { LastUsed } from "./schemas.js";
+
+export function getLastUsed(): LastUsed | null {
+  if (!existsSync(PATHS.LAST_USED_FILE)) return null;
+  try {
+    const raw = readFileSync(PATHS.LAST_USED_FILE, "utf-8");
+    return JSON.parse(raw) as LastUsed;
+  } catch {
+    return null;
+  }
+}
+
+export function setLastUsed(entry: Omit<LastUsed, "timestamp">): void {
+  ensureConfigDir();
+  const data: LastUsed = { ...entry, timestamp: new Date().toISOString() };
+  writeFileSync(PATHS.LAST_USED_FILE, JSON.stringify(data, null, 2) + "\n", "utf-8");
+}

apps/cli/src/services/state/schemas.ts

@@ -0,0 +1,6 @@
+export interface LastUsed {
+  meshSlug: string;
+  displayName?: string;
+  role?: string;
+  timestamp: string;
+}