2026-05-07 23:00:04 +01:00
2 changed files with 20 additions and 2 deletions
@@ -371,7 +371,25 @@ Sizes: **S** = under a day, **M** = 1–3 days, **L** = 3–7 days.
 > `v0.9.0-11-gccaccd8-dirty` → `v9.9.9-smoke` in <5s; `.old` preserved
 > on disk; chip and hero tile cleared on reconnect; audit row landed.
 > Screenshots in `_diag/p6-update-sweep/`.
- [ ] **P6-03** (M) Repo size trend graphs (sparkline on host card, full chart on repo page). _(Was P4-06.)_
+- [x] **P6-03** (M) Repo size trend graphs (sparkline on host card, full chart on repo page). _(Was P4-06.)_
+
+> **As shipped (2026-05-07, branch `tidy-up-last-backup-projection`):**
+> Spec `docs/superpowers/specs/2026-05-07-p6-03-repo-size-trend-design.md`,
+> plan `docs/superpowers/plans/2026-05-07-p6-03-repo-size-trend.md`.
+> Migration 0023 introduces `host_repo_stats_history` (one row per
+> host per UTC day, last-write-wins per column via COALESCE — a
+> prune-only or check-only patch never nulls a backup-time size
+> we already captured). WS handler in `internal/server/ws/handler.go`
+> writes a history row alongside the existing `UpsertHostRepoStats`
+> call; failure is best-effort, logged at WARN. New `internal/web/sparkline`
+> package emits inline SVG (sparkline + two-axis chart with hover
+> dots and bytes/count formatting); golden-file tests, deterministic
+> output. Dashboard host row gains a 30d sparkline cell between
+> Repo size and Snapshots; host repo page gains a Trend panel with
+> server-rendered `30d | 90d | 1y` range pills (htmx outerHTML
+> swap, helper `buildRepoTrendView` shared between page-load and
+> fragment endpoint). No new dependencies, no client JS, no agent
+> change. CI green; in-browser smoke walk-through pending operator.
 - [ ] **P6-04** (M) Prometheus `/metrics` endpoint: per-host gauges (last backup timestamp, last backup status, repo size, snapshot count, agent online), server gauges (active alerts, build info), job duration histograms; protected by bearer token or IP allow-list. _(Was P4-08.)_
 - [ ] **P6-05** (S) Document Prometheus integration + sample Grafana dashboard JSON. _(Was P4-09.)_