Sync alert rules from the alerts charts, add sync tooling

[ArnobKumarSaha]

Bumps go.appscode.dev/alerts to 791e5af59674 and syncs the resulting alert rule changes into the kubedb editor charts.

Chart changes

solr — real threshold changes from the upstream Solr alert fix (#138), applied to both kubedbcom-solr-editor and kubedbcom-solr-editor-options:

rule	val	duration
solrHighBufferSize	3000000 → 25	30s → 5m
solrHighHeapSize	3000000 → 85	30s → 5m
solrHighPoolSize	3000000 → 85	30s → 5m

Both solr alert.yaml templates are regenerated to match.

milvus / zookeeper — not threshold changes. 8e+08 and 1e+06 are the same numbers as 800000000 and 1000000; they're normalized to the form the source charts use so the sync check stays clean.

No rule keys were added or removed anywhere, so values.openapiv3_schema.yaml is unaffected — it's generated from the vendored Go types, not from values.yaml.

Tooling

Adds .claude/commands/sync-alerts.sh, which performs the sync deterministically instead of by hand:

• applies the three template transforms — helper prefix, metadata.labels block, and the alertEnabled argument shape, which differs between the two chart families
• writes both the -editor and -editor-options charts
• checks template rule keys against values.yaml, and form.alert against the source chart
• verifies by rendering both charts and diffing them against each other

sync-alerts.sh                # list syncable dbs, change nothing
sync-alerts.sh <db> [db...]   # sync those
sync-alerts.sh --all          # sync all matched
sync-alerts.sh --check [...]  # report only, write nothing

ALERTS_DIR overrides the alerts repo location (default ~/go/src/go.opnpulse.dev/alerts).

Confidence in the transform: run over all 28 charts, it reproduced the existing destination byte-for-byte everywhere except solr, across two different upstream template formatting styles.

--all now reports in sync for all 28 charts that have an upstream alerts chart. db2 and documentdb have none and are reported as skipped rather than silently dropped.

Follow-up needed

The generated README.md files for the four charts whose values.yaml changed are stale — they embed the values defaults, so the solr READMEs still show val: 3000000 and duration: "30s". Regenerating needs make gen-chart-doc-kubedbcom-{solr-editor,solr-editor-options,milvus-editor,zookeeper-editor}, which requires docker and could not be run in this environment. make fmt is blocked on the same.