v0.2.0:11 + v0.2.0:12 — Archive, Settings, agent surface, machines redesign

Two release cycles prepared together: v0.2.0:11 (policy archive + safe-
delete cleanup + brand-consistent confirm modals) and v0.2.0:12 (Settings
tab + agent-friendly operator API + machines tab redesign + buyer-facing
copy alignment).

Highlights:

- Migration 0015: policies.archived_at column. Archive button on tier
  cards; safe-delete relaxed to ignore revoked-license tombstones;
  renewal worker refuses archived policies.
- Migration 0016: scoped_api_keys table. Four roles (read-only,
  license-issuer, support, full-admin) with bounded scopes. Master
  admin_api_key still works on every endpoint; scoped keys gated on
  endpoints wired through require_scope().
- New /v1/openapi.json — public, no auth. Curated OpenAPI 3.1 spec
  for agent / SDK discovery.
- New Settings tab: Operator name + Payment providers panel + API
  keys management. Replaces 8 StartOS Actions (Zaprite all, BTCPay
  all, operator name, switch-provider). StartOS Actions pruned to 4
  install-time essentials.
- Machines tab rewritten: global default view grouped by product,
  filter pills with counts, quick-stats row, drill-down via new
  "Machines" button on each Licenses-tab row. New repo helper
  list_machines_admin joins machines x licenses x products
  server-side.
- Branded confirmModal replaces every native window.confirm() call
  in the admin UI (7 callsites).
- Enforce mode killed: KEYSAT_LICENSE_ENFORCE compile-time flag
  retired; daemon always boots; missing self-license -> Creator
  (free) tier. "Unlicensed" label gone from admin UI.
- Zaprite gated on the new zaprite_payments entitlement (renamed
  from card_payments to reflect the broader gateway).
- Creator code cap 5 -> 10.
- KEYSAT_AGENT_GUIDE.md: auth, role-to-scope mapping, error envelope,
  webhook events, worked recipes.
- Buyer-facing copy aligned with new positioning: "Bitcoin-native
  self-hosted software licensing" everywhere on production surfaces.
- Cross-product safety section (Section 9a) added to KEYSAT_INTEGRATION.md.
- 5 new API integration smoke tests covering OpenAPI, scoped API
  keys CRUD, role-elevation guard, and Zaprite-tier gating.

Test count: 83 passing (was 78). All migration tests pass against
0015 and 0016 applied to populated DBs.

licensing-service/migrations/0015_policy_archive.sql

@@ -0,0 +1,19 @@
+-- Migration 0015: policies.archived_at
+--
+-- Adds a soft-archive flag to policies. An archived policy is hidden
+-- from the admin grid (unless the operator opts to show archived) and
+-- from the public /buy/<slug> page. Existing licenses keep validating
+-- because their entitlements are signed into the LIC1 payload; the
+-- policy row is not consulted at validate time. Active recurring
+-- subscriptions tied to an archived policy stop renewing — the renewal
+-- worker treats archived as a hard stop and surfaces a clear event.
+--
+-- Why a column instead of a status TEXT enum? Policies already have
+-- two boolean toggles (active, public). A nullable timestamp is the
+-- minimum-information shape: NULL = live, timestamp = when archived.
+-- Useful for sorting "Archived (most recent first)" without an extra
+-- column.
+
+ALTER TABLE policies ADD COLUMN archived_at TEXT NULL;
+
+CREATE INDEX IF NOT EXISTS idx_policies_archived_at ON policies(archived_at);