docs: document README badges and the API-coverage generator
docs(subscriptions): Subscription API - registry, incognito, filters Documents the client subscription registry, static subscriptions, per-client geospatial filters (with the required geospatialFilter XML) and the live-verified quirks: incognito no-op, registration requiring proper CoT contact announcements.
docs(submission): Submission API - inputs, streaming feeds, config Documents input metrics and CRUD, the named streaming feed registry, messaging config, S&F chat toggle with state-restoring pattern, DB counters - plus the broken create-input/data-feed server bug.
docs(certs): Cert Manager API - admin certadmin endpoints Documents the wrapped certadmin operations plus the deliberate non-wrapping of the user-side TLS endpoints (403 even for admins) and the broken plural download endpoint.
docs(datafeeds): Data Feeds API - predicate feeds, stats, content Documents the complete DataFeedApi wrapper including the access-lockout trap (empty filter groups + X_509 locks everyone out), the GET-with-body polygon endpoint and the build_predicate_feed helper.
docs(groups): Group API - channel subscriptions, scopes, quirks Documents the complete GroupApi wrapper: raw endpoints plus the read-modify-write helpers, the entitlements/channels/subscriptions scope model, and the live-verified server quirks (absolute semantics, empty-write no-op, self-query connection binding, LDAP-first auth without file fallback, stale padded group entries, fresh-user propagation delay).
Initial wiki docs: Home, Getting Started, Home API, Mission API, User Account Management API