Story 15.5 — internal-ops dashboards doc mirror (R1 success criteria)

[fupelaqu]

Story 15.5 — elasticsql dual-doc mirror (Epic 15, last story)

Docs-only. Adds the core-project internal-ops mirror for the license-server R1 success-criteria Grafana dashboard, per the dual-doc convention (feedback_dual_docs_sync) and the spec's Product Decision P4 (this is the internal-ops operator view; the customer-facing privacy page is Story 15.6's telemetry.md, already present).

Changes

• NEW documentation/sql/internal_ops_dashboards.md — internal-ops note pointing at softclient4es-license-server/docs/ops/grafana/softclient4es-r1-success-criteria.json: the "R1 succeeded" threshold table (downloads >=500/wk, paid signups >=5/90d, case studies >=3/180d), the aggregate-only privacy rule (distinct-instance count never projected), the mandated psql -f apply for r1_sales_signals, and the collapsed-PENDING-row note.
• UPDATE documentation/sql/README.md — index entry for the new note.

No Scala, no sbt, no scalafmt — Markdown only.

Part of Epic 15 — R1 Telemetry (#119).

[fupelaqu]

Closing — this tracked the elasticsql mirror of the Story 15.5 internal-ops dashboard doc, which has been removed (PR #121 closed). Ops/operator documentation lives in softclient4es-license-server only (docs/ops/grafana/README.md + docs/ops/grafana/softclient4es-r1-success-criteria.json, PR #86); the dual-docs-sync convention is for customer-facing docs only. No elasticsql change is needed for Story 15.5.