Release 1.29.0

openvibe-shared/analytics/pg: request analytics on PostgreSQL (ADR-035; ADR-021's privacy bounds unchanged). AnalyticsTrackerPg is the tracker on an openvibe-sdk/db handle, with the same tables and getStats, getOverview and getBotAnalysis shapes; analyticsSchema() is the DDL for the service's migrations; pruneRawEventsPg is the 30-day retention in batches. The request path never waits for the database: rows buffer in memory and flush() writes them in one transaction every 5 s (or at 100). Unique visitors stay right across processes: the day's salt is shared through analytics_day_salts, so the visitor hash is computed at flush, while (address, user agent) wait in memory until then, as the rate counters always did; no address reaches the database. Session ids stay per process, as they were. Every SUM is cast to bigint (numeric comes back as text). test/analytics-pg.test.js on PGlite: two trackers count one visitor once, DNT records nothing, rollups, dashboards and retention. Needed by Network's and Live's PostgreSQL passes.