influxdb(seed): drop chunk size to per-day

806e979 (per-month) still EOF'd at 2024-04 — first dense month for HA
telemetry, pivot of one month at that density overwhelms legacy's
memory. Drop to per-day chunks (~3300 iterations across 9 years,
mostly empty days no-op'ing in <1 s; dense days under 1 MB pivoted).

kubernetes/seed/influxdb/seed-job.yaml

@@ -105,13 +105,15 @@ spec:
               # columns; `drop()` strips the _start/_stop range columns
               # that `influx write` rejects.
               #
-              # Why chunked, and why monthly: pivoting in-memory in
+              # Why chunked, and why daily: pivoting in-memory in
               # legacy means the whole result set has to fit before it
-              # flushes. The previous per-year shape EOF'd on the
-              # current year (full year of HA telemetry won't pivot in
-              # legacy's RAM). Per-month windows keep each pivot to
-              # tens of MB regardless of year, so legacy never OOMs.
-              # Empty months are no-ops (~1 s each).
+              # flushes. Per-year EOF'd on the current year; per-month
+              # also EOF'd on dense months (HA-telemetry from 2024+ is
+              # too big at one-month granularity). Per-day windows keep
+              # each pivot tiny regardless of write rate, so legacy
+              # never OOMs. Empty days are no-ops (~1 s each); the
+              # outer loop is ~3300 iterations across 9 years but most
+              # complete in <1 s.
               #
               # No script-side idempotency: InfluxDB writes are upserts
               # on (timestamp,measurement,tagset,field), so a retry
@@ -123,12 +125,11 @@ spec:
               # an `influx query` EOF inside the pipe propagates a non-
               # zero exit, the loop aborts, the Job retries.
               START="2018-01-01T00:00:00Z"
-              # Stop at the start of the month AFTER current → covers
-              # the in-progress month inclusively.
-              END=$(date -u -d "$(date -u +%Y-%m-01) +1 month" +%Y-%m-%dT00:00:00Z)
+              # Stop at tomorrow → covers today inclusively.
+              END=$(date -u -d "tomorrow" +%Y-%m-%dT00:00:00Z)
               CUR="$START"
               while [[ "$CUR" < "$END" ]]; do
-                NEXT=$(date -u -d "$CUR +1 month" +%Y-%m-%dT00:00:00Z)
+                NEXT=$(date -u -d "$CUR +1 day" +%Y-%m-%dT00:00:00Z)
                 log "Streaming $CUR → $NEXT ..."
                 influx query --raw \
                     --host "$LEGACY_HOST" \