feat(devices): fleet migration posture report (#3244)

[ToddHebebrand]

Closes #3244 (epic #3249).

Surfaces the management-posture detection Breeze already collects (agent/internal/mgmtdetect/ → devices.management_posture jsonb) as a fleet-level migration/decommission report. Surfacing only: no agent changes, no new tables/columns — the jsonb stays the single source of truth.

Spec: docs/superpowers/specs/onboarding-signup/2026-08-08-fleet-migration-posture-report-design.md · Plan: docs/superpowers/plans/open/2026-08-08-fleet-migration-posture-report.md (both on the #3250 docs branch).

API

• services/managementPostureReport.ts — two aggregate queries, per the plan's critical note:
  • Detections: CROSS JOIN LATERAL jsonb_array_elements(...), count(DISTINCT devices.id) per (org, product, status), plus a fresh-count FILTER on collectedAt.
  • Coverage: per-org denominators with no lateral join — totalDevices, neverScanned (posture IS NULL), stale, scannedNoneDetected (empty array OR absent key), detectedDevices, freshDetectedDevices.
  • Deliberately not one GROUP BY with a LEFT JOIN LATERAL: that collapses never-scanned / category-absent / empty-array into one (NULL, NULL) group, making a never-scanned device read as verified-clean — the exact failure that strands endpoints in Phase 6 of a migration.
  • The summary assembler never emits a detection count without its coverage denominators (throws on the impossible orphan case rather than dropping it).
  • category is validated against the ingest enum (MANAGEMENT_POSTURE_CATEGORIES, now exported from routes/agents/schemas.ts as the single source of truth) and rides a bind param with an explicit ::text cast — never string interpolation.
• routes/devices/posture.ts — GET /devices/management-posture/summary (orgId?, category?=rmm, stalenessDays?=7) and GET /devices/management-posture/devices (product, category?, status?, pagination). Scoping mirrors GET /devices/stats: authMiddleware + requireScope + DEVICES_READ, auth.orgCondition, 403 on inaccessible ?orgId, site-allowlist narrowing (empty allowlist ⇒ empty report), decommissioned + ephemeral devices excluded. Mounted before coreRoutes so /management-posture/* isn't eaten by the /:id matcher.

Web

• components/devices/FleetPostureReport.tsx + pages/devices/posture.astro + sidebar entry (Reporting → Fleet Posture, gated on devices:read). Org narrowing rides the global org selector (/devices/* is org-or-all; fetchWithAuth injects orgId).
• Posture age next to every count (fresh of total on every row; stale/never-scanned cards); a bare zero is never rendered — zero detections with unknown/stale devices shows an explicit amber caveat.
• Orphaned remote-access agents called out as a security finding (separate red callout fed by a remoteAccess summary fetch — ScreenConnect/Splashtop survive their RMM's uninstall).
• Per-org migration progress: enrolled / running both (mid-migration) / Breeze-only (verified clean) / unknown.
• CSV export via toCsv + downloadBlob (injection-neutralized), for customer-facing migration evidence.
• Category selection persists in window.location.hash per the repo's URL-state convention.
• i18n: fleetPosture.* (devices ns) + nav.fleetPosture added to all 7 locales with real translations; all four i18n guard suites pass.

Tests

• services/managementPostureReport.test.ts (unit, mocked db.execute): asserts two separate queries (lateral join in detections only, none in coverage), scope propagation, assembly, numeric coercion, orphan-detection throw, category validation.
• routes/devices/posture.test.ts (unit): defaults, category 400 (incl. SQL-injection-shaped input), inaccessible-org 403, org/site narrowing, empty-allowlist short-circuit, pagination.
• services/managementPostureReport.integration.test.ts (real Postgres, the load-bearing one): one org seeded with all four populations at once — never-scanned, stale-with-detection, fresh empty-array, fresh absent-key, fresh-detected, duplicate-product, decommissioned, plus a second partner's org. Asserts the partition neverScanned + stale + freshClean + freshDetected == totalDevices, empty-array/absent-key land in scannedNoneDetected (not neverScanned), duplicate product counts once, active/installed/unknown kept separate, fresh <= total, org/partner scoping, drill-down, staleness-window boundary. Registered in vitest.integration.config.ts (and excluded from the unit runner). A single-population fixture passes against the broken one-query form — this fixture is what actually guards the design.
• components/devices/FleetPostureReport.test.tsx: render, zero-caveat, orphan callout, drill-down fetch, error state.
• No RLS/cascade/export registration needed: no new table/column; devices is already registered and management_posture is already excludedOpen.

Deviations from the plan (flagged, not silent)

• Plan SQL used deleted_at IS NULL; devices has no such column — used the repo's actual liveness convention from GET /devices/stats (status != 'decommissioned' AND is_ephemeral = false).
• Site filter (Task 4): deferred. The spec's §3 endpoint contract has no site parameter and site-restricted users are already auto-narrowed via allowedSiteIds; adding a free-form site dropdown would grow the API surface beyond the spec. Can follow as a small increment if wanted.
• Task 5 (perf against a 10k seeded fleet): not run — no Postgres (or Docker) on this machine. The query shapes match the spec's cost analysis (per-org rides the org_id index; partner-wide roll-up is an on-demand full scan). Needs a one-off measurement on a seeded stack before/after merge; happy to record numbers on [API][Web] Fleet migration/decommission report — Management Posture already detects 11 competing RMMs and nothing consumes it #3244 from an environment with a DB.
• Task 6 toolkit Recipe 5 / Known Rough Edges: apps/docs/.../migration/toolkit.mdx only exists on the unmerged docs(migration): RMM-to-Breeze migration guides and toolkit #3250 docs branch, not on main — cannot be edited from this PR. Should be a follow-up commit on docs(migration): RMM-to-Breeze migration guides and toolkit #3250 (or after it merges). features/management-posture.mdx (on main) is updated here with the fleet view + both endpoints.

Verification

• vitest run (single-fork): service unit 10/10, route unit 10/10, agents security.test.ts + devices stats.test.ts 12/12, web component 5/5, i18n guards + sidebar structural + no-silent-mutations 182/182 — all green.
• tsc --noEmit: clean for apps/api and apps/web. (astro check cannot run locally — Node 20 vs Astro's >=22.12 — the new 13-line .astro page mirrors compare.astro; CI covers it.)
• The integration suite runs under the Integration Tests CI job (no local DB available); it is skipped (it.runIf(DATABASE_URL)) elsewhere.

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