manage/openspec/changes/prometheus-direct-charting/verify-report.md

Verify Report — prometheus-direct-charting

Phase: verify · Change: prometheus-direct-charting · Repo: /home/user/manage FRESH-CONTEXT adversarial read-only verification of the change against proposal.md, spec.md, design.md, and tasks.md. No source edits. This verify report is the only file written.

Head commit verified: 67ca0fc (feat(prometheus-direct-charting): slice 3 — remove grafana + config rewrite + changelog).

Three implementation slices are committed:

• 5dad982 slice 1 — prom range query + chart rebrand
• 65bae95 slice 2 — gauge + mean widgets
• 67ca0fc slice 3 — grafana removal + config rewrite + changelog

NOTE: the dispatch brief cited slice hashes 58be6e0 / ba94317 (an earlier amend state). The actual landed commits are 65bae95 / 67ca0fc. Content of all three slices matches the spec/design/tasks; this is informational, not a defect.

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0. Executive summary / verdict

VERDICT: PASS — implementation complete and green; archive BLOCKED on a task-hygiene / missing-apply-progress issue (reconcilable without code).

Every functional requirement SC-101 … SC-127 was checked against source and passes. Grafana is fully excised from the live code paths (service type, adapters, widgets, hook, API client, type, status endpoint, nav entry, service tab). Prometheus is the direct chart source: chart (multi-series recharts line chart via /api/v1/query_range), gauge (instant scalar + threshold bands via recharts RadialBarChart), and mean (client-side average) are wired in both registries with consistent schemas. The shared normalize_prometheus_matrix / step_for_window helpers are extracted and unit-tested. All four gates are green: backend pytest (293 passed), ruff (clean), frontend npm run build (exit 0), npm run lint (0 errors).

Findings:

• [CRITICAL — archive blocker, NOT a code defect] 19 unchecked implementation/verification task checkboxes remain in tasks.md (all of Slice 3 §3.1–3.14 and Integration §4.1–4.5), and apply-progress.md does not exist to reconcile them. The underlying work is done and verified complete against source; the blocker is that the task tracker was never updated and no apply-progress artifact was produced. Reconciliation = tick the boxes + write apply-progress.md (no code change). See §4.
• [WARNING] SC-125 is PARTIAL: none of the three new widget tests (PrometheusChartWidget / PrometheusGaugeWidget / PrometheusMeanWidget) exercises an explicit loading state (isLoading:true → Skeleton). Error and rendered-data cases exist for all three. The loading branch exists in each component; the gap is test coverage, not functionality. See §5.
• [INFO] Stale generated .pi-map.md files still reference Grafana / ObservabilityPage.tsx; these are not deliverable source and are ignored by

SC-115/116, but should be regenerated (project_map_patch/validate). The config.yaml context block also still names ObservabilityPage.tsx (refactored away into service-tabs/) — not an SC-121 criterion, minor doc staleness.

• [INFO] Working tree is not pristine: an uncommitted cosmetic reformat of frontend/src/pages/service-tabs/MediaTab.tsx (unrelated to this change) plus untracked .pi-tmp/* and openspec/changes/service-storage-harness/ (the proposal for the separate change SC-127 requires independence from).

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1. Structured status & actionContext findings

The native gentle-pi.sdd-status reports changeName: null / blockedReasons: ["Change selection is ambiguous: …"] because the engine auto-detected four active changes. This verify task was explicitly assigned prometheus-direct-charting; the ambiguity is a parent-resolution artifact and does not block this phase.

• artifactStore: openspec; change root openspec/changes/prometheus-direct-charting/.
• Artifacts present: proposal.md, spec.md, design.md, tasks.md.
• apply-progress.md: MISSING (confirmed: directory contains only the four planning docs + this report). This is the root cause of the §4 archive blocker.
• actionContext: mode: repo-local, workspaceRoot: /home/user/manage, allowedEditRoots: ["/home/user/manage"], warnings: []. Implementation ownership and all target files are provably inside the authoritative workspace. ✓
• The service-storage-harness change exists only as an untracked proposal folder; SC-127 (independence) holds — this change builds/tests green without it.

2. Gate results (actual output, run at 67ca0fc)

Gate	Command	Result	Evidence
Backend tests	cd backend && PYTHONPATH=src python3 -m pytest -q	PASS	293 passed, 2 warnings in 36.26s. Includes test_prometheus_range.py (9) + chart/gauge/mean adapter tests.
Backend lint	cd backend && PYTHONPATH=src python3 -m ruff check src tests	PASS	All checks passed!
Frontend build	cd frontend && npm run build (tsc -b + vite build)	PASS exit 0	✓ built in 1.08s; 2543 modules transformed. Non-fatal >500 kB chunk-size warning (pre-existing).
Frontend lint	cd frontend && npm run lint (eslint .)	PASS exit 0	0 errors, 1 warning. The warning is react-hooks/exhaustive-deps in WidgetConfigDialog.tsx:370 — pre-existing, untouched by this change (no slice modified that file).

Grep gates (SC-115 / SC-116 / SC-117 / SC-120)

grep -rin grafana backend/src --include='*.py'
  → 3 matches, ALL in prometheus_range.py docstrings/comments describing the
    extraction/removal (explicitly allowed by SC-115). No live grafana code.

grep -rin grafana frontend/src
  → matches ONLY in: stale generated .pi-map.md / .pi-map.index.md files
    (ignored — generated artifacts), and Dashboard.test.tsx lines 108/115
    (the whitelisted user-authored shortcut *label* "Grafana"). No live
    grafana code, no grafana widget/component/hook.

grep -rin grafana backend/tests --include='*.py'
  → ZERO matches (SC-120). (.pyc cache + .pi-map.md are stale; .py sources clean.)

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3. Spec coverage (SC-101 … SC-127)

SC	Requirement	Verdict	Evidence
SC-101	range query → {series} shape	PASS	sources.py:_fetch_chart → _range_query hits /api/v1/query_range with query/start/end/step; returns {"series": normalize_prometheus_matrix(matrix)} = {label, points:[{t:int, v:float|null}]}. Test test_prometheus_chart_adapter_runs_range_query asserts endpoint + params + shape.
SC-102	shared, Prometheus-native label normalization	PASS	Single helper normalize_prometheus_matrix in prometheus_range.py; drops __name__/__*, joins k=v (sorted), falls back to "value", dedups with (n). No duplication. test_prometheus_range.py covers all rules.
SC-103	range-query errors degrade gracefully	PASS	_range_query/_instant_query catch asyncio.TimeoutError + requests.RequestException → {"error": ...}; .fetch() wraps the whole body in try/except → {"error"}. Never raises. Test test_prometheus_chart_adapter_degrades_on_http_error.
SC-104	step derived from window (100–300 pts)	PASS	step_for_window = max(15, round(window/200)). Parametrized test asserts 100–300 points for 1h/6h/24h/7d + 15s floor + custom target.
SC-105	chart rebind grafana→prometheus (both registries)	PASS	Backend prometheus.py declares chart; frontend registry.ts prometheus binding has chart. Grafana is gone entirely (so trivially offers no chart).
SC-106	chart renderer reused unchanged	PASS	PrometheusChartWidget.tsx preserves LineChart/Line/XAxis/YAxis/CartesianGrid/Tooltip/ResponsiveContainer/mergeSeries/CHART_COLORS/formatTime; rename-only + empty-state copy fix.
SC-107	chart multi-series	PASS	series.map((s,i) => <Line dataKey={s.label} .../>) renders every series; no single-series restriction.
SC-108	chart window is a preset	PASS	chart config = {promql, window}; window ∈ {1h,6h,24h,7d} resolved via WINDOW_PRESETS server-side; no raw from/to/step.
SC-109	gauge = instant scalar	PASS	_fetch_gauge → instant /api/v1/query → parses result[0]["value"][1] → {"value":...}. Bound to prometheus in both registries.
SC-110	gauge threshold bands	PASS	PrometheusGaugeWidget (recharts RadialBarChart) renders green/amber/red track cells when warn_at+crit_at set, single neutral track otherwise; min/max default to 0/max(value,1). Config accepts warn_at/crit_at/min/max/unit.
SC-111	gauge scalar-only	PASS	len(result) != 1 → {"error": "Gauge requires a single-series query; refine your PromQL"}. Test test_prometheus_gauge_adapter_rejects_multi_series.
SC-112	mean = client-side mean over window	PASS	_fetch_mean → _range_query → averages non-null samples of the single series → {"value": mean, "unit?"}. Test asserts mean of [1,2,3]=2.0, NaN-skip [2,NaN,4]=3.0.
SC-113	mean = plain PromQL + preset	PASS	mean config = {promql, window, unit?}; user supplies plain PromQL (no avg_over_time); window is a preset.
SC-114	mean scalar-only	PASS	len(result) != 1 → {"error": ...}. Test test_prometheus_mean_adapter_rejects_multi_series.
SC-115	no grafana in backend src	PASS	grep → only prometheus_range.py docstrings (allowed). integrations/grafana.py deleted; no GrafanaWidgetSource.
SC-116	no grafana in frontend src	PASS	grep → only Dashboard.test.tsx whitelisted shortcut fixture + stale .pi-map.md (ignored). No live code.
SC-117	grafana gone from registries	PASS	No grafana in backend SERVICE_DEFINITIONS/SERVICE_ADAPTERS or frontend SERVICE_REGISTRY/BUILTIN_WIDGETS; integrations/grafana.py deleted. registry.test.ts asserts 5 service types (no grafana).
SC-118	grafana status + UI removed	PASS (intent)	get_grafana_status removed (monitoring.py); useGrafanaStatus/fetchGrafanaStatus/GrafanaStatus type removed; LinksTab.tsx+test deleted; service-tabs/index.ts grafana case removed; navEntries.ts grafana entry removed; Dashboard.tsx OBSERVABILITY_TYPES = {alertmanager, prometheus}; ServicesPage.tsx copy updated. ObservabilityPage.tsx was already refactored into service-tabs/ (spec drift acknowledged in design §0 / spec SC-118 note).
SC-119	orphaned grafana widget degrades	PASS	WidgetInstanceCard: resolveWidget → undefined for a grafana-bound widget (no binding) → renders "Unknown widget: <kind> (service-bound)" Alert. No crash.
SC-120	grafana tests removed	PASS	No grafana in backend test .py or frontend widget tests. Only stale .pyc cache + .pi-map.md.
SC-121	config.yaml accurate	PASS	Stale "Do NOT re-implement charting in-app" / "No recharts/d3" claims gone; OBSERVABILITY MODEL states "Manage renders Prometheus-backed metrics directly via recharts … Grafana is no longer integrated." No grafana-as-chart-path.
SC-122	CHANGELOG migration note	PASS	[Unreleased] has "Direct Prometheus charting" + "BREAKING — Grafana service type removed" with migration: delete grafana instances → recreate as Prometheus; grafana/chart widgets → prometheus/chart.
SC-123	backend tests pass	PASS	pytest → 293 passed; covers range→{series}, gauge scalar-only, mean aggregation, shared label helper.
SC-124	frontend build + lint	PASS	npm run build exit 0; npm run lint 0 errors (1 pre-existing warning).
SC-125	new widget kinds have tests	PARTIAL	All three test files exist with error + rendered cases (gauge has with/without bands; mean has with/without unit). No explicit loading-state case (isLoading:true) in any of the three — see §5.
SC-126	no silent data migration	PASS	No grafana→prometheus row transformation code anywhere; only docstring references to manual migration. settings_store.py migration is unrelated (jellyseerr→jellyfin).
SC-127	independent of service-storage-harness	PASS	No reference to it in source (only a prometheus_range.py docstring noting future reuse); builds/tests green without it; that change exists only as a proposal folder.

Functional spec coverage: 26/27 fully PASS, 1 PARTIAL (SC-125, test-coverage only).

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4. Task completion status — ⚠ archive blocker (reconcilable)

tasks.md checkbox state:

• Slice 1 (§1.1–1.10): all 10 [x] ✓
• Slice 2 (§2.1–2.10): all 10 [x] ✓
• Slice 3 (§3.1–3.14): all 14 [ ] — UNCHECKED
• Integration (§4.1–4.5): all 5 [ ] — UNCHECKED

Total: 20 checked, 19 unchecked.

This is a CRITICAL completeness issue for the archive gate per the verify contract. However — and this is the important reconciliation — the Slice 3 and Integration work is verifiably DONE against source:

Unchecked task	Actual state (verified)
3.1 delete integrations/grafana.py	deleted (ls → ENOENT; slice-3 diff 73 ------)
3.2 drop grafana from backend registry	done (registry.py has no grafana import/entry)
3.3 remove GrafanaWidgetSource + adapter	done (sources.py has no class; SERVICE_ADAPTERS no grafana; diff 113 ---------)
3.4 remove get_grafana_status	done (monitoring.py grep clean; diff -25)
3.5 remove grafana backend tests	done (.py test grep clean)
3.6 delete GrafanaLinkWidget + barrel	done (file gone; index.ts export dropped)
3.7 remove grafana frontend binding	done (registry.ts no grafana key; registry.test asserts)
3.8 remove grafana nav entry	done (navEntries.ts grep clean)
3.9 remove hook + api client + type	done (useObservability.ts/client.ts/types/index.ts grep clean)
3.10 delete LinksTab + tab-index case	done (file + test deleted; index.ts grep clean)
3.11 Dashboard + ServicesPage	done (OBSERVABILITY_TYPES = {alertmanager,prometheus}; ServicesPage copy updated)
3.12 rewrite config.yaml	done (stale claims gone)
3.13 CHANGELOG note	done (migration entry present)
3.14 verify slice 3 (grep + build + lint + test)	done (all green — §2)
4.1 full backend pytest	done (293 passed)
4.2 frontend build + lint	done (exit 0 / 0 errors)
4.3 grep-clean	done (SC-115/116 satisfied)
4.4 config.yaml check	done (SC-121 satisfied)
4.5 CHANGELOG check	done (SC-122 satisfied)

The unchecked boxes are stale (work performed, tracker not updated), and no apply-progress.md exists to serve as the stale-checkbox reconciliation record the contract permits. Resolution is a documentation-only step: tick §3.1–3.14 and §4.1–4.5, and author apply-progress.md describing the three landed slices. No code change is required.

Per the verify contract, an unchecked implementation-task line is an archive blocker until reconciled. Because the implementation is verified complete, this blocks archive but does not block sdd-sync of the green code.

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5. TDD compliance & assertion-quality assessment

Strict-TDD was not declared active for this change in config.yaml / parent prompt / (absent) apply-progress.md, so the formal TDD-cycle-evidence check is not applicable. Assertion quality was still audited adversarially.

Backend assertions — GENUINELY BEHAVIORAL (good). Spot-checked:

• test_prometheus_range.py: asserts exact label strings (instance=h:9100 mode=idle), dedup suffix (job=x (1)), null sentinels → None, malformed-timestamp drop, point-count band per preset, 15s floor. No tautologies.
• test_widgets.py adapters: assert the called URL (endswith("/api/v1/query_range") / /api/v1/query"), the params ({start,end,step} ⊆ params, query=="up"), the return shape (result["series"][0]["label"], result["value"]==0.75), multi-series → {"error" ... "single-series"}, and mean arithmetic (2.0, NaN-skip 3.0). These verify real behavior, not smoke.

Frontend assertions — adequate, one coverage gap.

• Gauge test asserts the rendered value text (0.75 %, 42 req/s) and threshold-label presence/absence — meaningful.
• Mean test asserts the rendered value (23.5 %, 1500) — meaningful.
• Chart rendered-case asserts only the SectionCard title (CPU Usage), not that recharts drew the series SVG — a weak/title-only assertion (acceptable as a "rendered data case" since the component mounts with series data, but it does not prove the lines rendered).

[WARNING] SC-125 loading-state gap (see §3). None of the three widget tests sets isLoading:true. The mockData helper hard-codes isLoading:false, and no case asserts the <Skeleton> loading branch. Each component's loading branch exists and is structurally identical to sibling widgets, so this is a test-coverage gap, not a functional defect. Recommend adding one isLoading:true case per widget to fully satisfy SC-125's enumerated "loading state" requirement. Non-blocking.

No ghost loops, no type-only assertions, no implementation-detail CSS assertions found. No test mocks grafana anywhere (only the whitelisted Dashboard.test.tsx shortcut label).

6. Review-workload / PR-boundary findings

Per-slice changed lines (numstat, excluding tasks.md doc churn):

Commit	Slice	Source Δ	Over 400?	Verdict
5dad982	1 range+rebrand+helper	~333 ins / ~56 del	under (337 net w/ test)	OK
65bae95	2 gauge+mean	~707 ins / ~32 del	over (largely new widgets+tests: gauge 137, mean 59, tests 124, backend tests 197)	OK — additive feature code+tests; forecast rated "Medium"; boundary is the feature, not a missed split
67ca0fc	3 grafana removal+config+changelog	~123 ins / ~926 del	under (net negative)	OK — mostly deletions

The tasks.md Review Workload Forecast (stacked-to-main, 3 slices, ~850–1,110 total) was followed: S1→S2→S3, each independently green. Slice 2's +707 insertions exceed the 400-line added budget but are dominated by two new components + their tests + new adapter tests (no size:exception flag was recorded, and the forecast itself rated slice 2 "~310–400 changed lines" which under-counts the test volume). This is a minor forecast-vs-actual variance on an additive slice, not scope creep — the boundary is exactly the gauge+mean feature, no unrelated files touched. Recommend recording the slice-2 actual in the archive summary. Non-blocking.

Scope was honored: no backend API/type-contract widening, no service-storage-harness coupling, metric path preserved (PrometheusMetricWidget reads data?.data?.result as the PromQL data object; _instant_query returns {"result": payload.get("data",{})} — identical shape).

7. Adversarial checks

• Dead imports after grafana removal? None. Backend ruff (catches unused imports) is clean; sources.py imports WINDOW_PRESETS/normalize_prometheus_matrix/ step_for_window — all used. Frontend tsc/eslint clean (unresolved imports would fail the build).
• PrometheusWidgetSource.fetch dispatch cross-contamination? None. Clean widget_kind dispatch: chart→{series}, gauge→{value,...}, mean→{value}, default→{result} (metric). Distinct shapes; shared _range_query/_instant_query only do HTTP + error mapping.
• Config-schema consistency (backend models vs frontend registry)? Consistent. gauge: backend {promql, warn_at, crit_at, min, max, unit} ↔ frontend configSchema {promql(req), warn_at, crit_at, min, max, unit}. chart: {promql, window} ↔ {promql(req), window}. mean: {promql, window, unit} ↔ {promql(req), window, unit}.
• Lingering grafana mocks? None in .py/.tsx source. Only stale .pyc bytecode cache + .pi-map.md.

8. Residual risks / non-blocking findings

1. [CRITICAL-process] 19 unchecked tasks + missing apply-progress.md (§4) — archive blocker; reconciliation is doc-only.
2. [WARNING] SC-125 loading-state tests missing (§5) — coverage gap, not a defect.
3. [INFO] Stale generated .pi-map.md files reference Grafana / ObservabilityPage.tsx / TestGrafanaStatus / GrafanaLinkWidget. Not deliverable source; ignored by SC-115/116. Regenerate via project_map_patch/project_map_validate (the project-map protocol flags these dirty).
4. [INFO] config.yaml context still names frontend/src/components/ObservabilityPage.tsx (refactored away into service-tabs/). Not an SC-121 criterion (which targets the charting/grafana claims, which are fixed); minor doc staleness.
5. [INFO] Uncommitted MediaTab.tsx cosmetic reformat (Prettier line-wrap of a ternary) — unrelated to this change, predates/orthogonal. Dirty working tree; no files are staged.
6. [INFO] Chunk-size build warning (~1.1 MB JS) — non-fatal, pre-existing, orthogonal.
7. No browser/visual smoke performed (out of scope); the recharts RadialBarChart gauge and LineChart rendering are only structurally tested.

9. Exact blockers

• BLOCKER (archive only, doc-reconcilable): 19 unchecked implementation/verification tasks (§3.1–3.14, §4.1–4.5) and absent apply-progress.md. Implementation is verified complete; resolution = tick boxes + write apply-progress.md.

No code-level blockers. All functional requirements SC-101…SC-127 pass (SC-125 PARTIAL on test coverage only). All four gates green. Code is ready for sdd-sync; archive requires the checkbox/apply-progress reconciliation.

10. Recommended next phase

→ sdd-sync (code PASS). Concurrently/after: author apply-progress.md documenting the three landed slices, and tick §3.1–3.14 + §4.1–4.5 in tasks.md to clear the archive blocker. Optionally add three isLoading:true widget tests to move SC-125 PARTIAL→PASS, and regenerate the stale .pi-map.md.

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Appendix A — Verification commands run (at 67ca0fc)

cd backend && PYTHONPATH=src python3 -m pytest -q          → 293 passed (2 warnings)
cd backend && PYTHONPATH=src python3 -m ruff check src tests → All checks passed!
cd frontend && npm run build                                → exit 0 (✓ built; >500kB warning pre-existing)
cd frontend && npm run lint                                 → exit 0 (0 errors, 1 pre-existing warning)
grep -rin grafana backend/src --include='*.py'              → 3 docstring hits in prometheus_range.py (allowed)
grep -rin grafana frontend/src                              → Dashboard.test.tsx fixture + stale .pi-map.md only
grep -rin grafana backend/tests --include='*.py'            → ZERO
ls backend/src/media_library_viewer_api/integrations/grafana.py → ENOENT (deleted)
grep -nE '^\s*- \[ \]' tasks.md                             → 19 unchecked (§3.1–3.14, §4.1–4.5)

Appendix B — Files substantively changed

Backend

• widgets/prometheus_range.py (new) — WINDOW_PRESETS, step_for_window, normalize_prometheus_matrix.
• widgets/sources.py — dropped GrafanaWidgetSource; PrometheusWidgetSource gains _fetch_chart/_fetch_gauge/_fetch_mean + shared _range_query/_instant_query.
• integrations/prometheus.py — metric+chart+gauge+mean widget kinds + config models.
• integrations/registry.py — grafana import/entry removed.
• integrations/grafana.py — deleted.
• routers/monitoring.py — get_grafana_status removed.
• tests/test_prometheus_range.py (new), tests/test_widgets.py (chart/gauge/mean adapter tests; grafana tests removed), tests/test_api.py + tests/test_services.py (grafana fixtures/tests removed).

Frontend

• widgets/PrometheusChartWidget.tsx (renamed from GrafanaChartWidget), PrometheusGaugeWidget.tsx (new), PrometheusMeanWidget.tsx (new) + their tests.
• widgets/GrafanaLinkWidget.tsx — deleted; widgets/index.ts barrel updated.
• integrations/registry.ts — grafana binding removed; chart/gauge/mean added to prometheus; registry.test.ts updated.
• integrations/navEntries.ts — grafana entry removed.
• hooks/useObservability.ts, api/client.ts, types/index.ts — grafana hook/client/type removed.
• pages/service-tabs/LinksTab.tsx (+test) — deleted; service-tabs/index.ts grafana case removed.
• pages/Dashboard.tsx (OBSERVABILITY_TYPES), pages/ServicesPage.tsx (copy) — grafana removed.

Docs

• openspec/config.yaml — stale thin-dashboard/no-recharts claims repealed.
• CHANGELOG.md — direct-Prometheus-charting + grafana-removal migration note.