Add the Analytics section: check runs, analytics API and page

Runs (migration 0011): a run groups the cycles of one launch. It opens when an
address enters an idle queue, takes everything submitted or re-checked while it
is open and is finalized when all its addresses are done; a re-check after that
opens a new run, so results of different runs never mix. check_runs,
run_results (one result per address and run, with the verdict and the expected
and stored check counts), subnets, run_id on ip_queue and checks. Existing data
is split into runs at pauses of more than an hour; ingress checks get the
validator that held the address (also at write time from now on).

Analytics (internal/analytics): figures computed from the stored checks of the
latest cycle of each address in the run, as facts next to the verdict: summary,
reasons of partial, data quality, subnets, targets and the subnet x target
matrix by check type, ingress by site, error classes, validators, and the
address lists behind the indicators and error classes. API: analytics runs,
report, lists (JSON or CSV), subnet list; run and subnet filters for the
registry.

Dashboard: /analytics matching the approved mockup (run selector, indicators
with address lists and CSV, error-class dialogs, drill-down to the registry),
subnet list on /settings. Sidebar: the control-api link state, theme toggle and
logout moved to the top, the three dots next to the logo removed, sections
grouped.

Rebuilt bin/control-api and bin/admin-dashboard to match. Plan, summary and the
updated README, API, USAGE, DASHBOARD and ADMIN_CLEANUP docs are in docs/.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/db/queries_checks.go

@@ -31,8 +31,9 @@ func (d *DB) UpsertCheckIfOpen(ctx context.Context, c Check) (bool, error) {
 	now := timeToDB(Now())
 	res, err := d.ExecContext(ctx, `
 		INSERT INTO checks (registry_id, cycle_id, ip_id, ip_address, attempt_number, validator_id,
-			source, check_type, target, success, latency_ms, detail, checked_at, created_at, recorded_at)
-		SELECT q.registry_id, q.cycle_id, q.id, ?, q.attempt_number, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?
+			source, check_type, target, success, latency_ms, detail, checked_at, created_at, recorded_at, run_id)
+		SELECT q.registry_id, q.cycle_id, q.id, ?, q.attempt_number, COALESCE(NULLIF(?, ''), q.owner_validator_id, ''),
+			?, ?, ?, ?, ?, ?, ?, ?, ?, q.run_id
 		FROM ip_queue q
 		WHERE q.id=? AND q.attempt_number=? AND q.state NOT IN (?, ?, ?, ?)
 		ON CONFLICT(registry_id, cycle_id, source, check_type, target) DO UPDATE SET
@@ -41,7 +42,8 @@ func (d *DB) UpsertCheckIfOpen(ctx context.Context, c Check) (bool, error) {
 			latency_ms=excluded.latency_ms,
 			detail=excluded.detail,
 			checked_at=excluded.checked_at,
-			recorded_at=excluded.recorded_at
+			recorded_at=excluded.recorded_at,
+			run_id=excluded.run_id
 	`, c.IPAddress, c.ValidatorID, c.Source, c.CheckType, c.Target,
 		c.Success, c.LatencyMS, c.Detail, timeToDB(c.CheckedAt), now, now,
 		c.IPID, c.AttemptNumber, IPAggregating, IPDone, IPFailed, IPOccupied)