proof harness: fix queryd refresh-tick race in 04_query_correctness

Caught by the audit rerun: with cache-warm binaries, 04 fires its
first SELECT faster than queryd's 500ms refresh tick — Q1 returned
400 ("table not found") even though 03_ingest had registered the
manifest. Subsequent queries (after the next tick) succeeded.

This is an eventual-consistency wait, not a retry — queryd's
contract is that views appear within one tick of catalogd having the
manifest. Production code does not need changing.

Added to lib/http.sh:
  proof_wait_for_sql <budget_sec> <sql>
    polls a SQL probe until it returns 200 or budget elapses; emits
    no evidence (test setup, not a claim).

Used in 04_query_correctness:
  Wait up to 5s for queryd to have the view before running the 5
  SQL assertions. Skip-with-loud-reason if the view never appears.

Verified: integration mode back to 104 pass / 0 fail / 1 skip after
fix. The skip is the unchanged GOLAKE-085 informational record.

This is exactly the kind of finding the harness was designed to
surface — the regression existed in the codebase the moment Phase D
shipped, but only fired when the next compare run hit cache-warm
timing. Without the harness, it would have surfaced on a CI run
weeks from now and been hard to bisect.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/proof/cases/04_query_correctness.sh

@@ -26,6 +26,15 @@ substitute_table() {
     sed "s/FROM workers/FROM ${DATASET}/g; s/from workers/from ${DATASET}/g"
 }
 
+# Wait for queryd to have the view from 03's ingest. queryd refreshes
+# every 500ms (proof override of the 30s prod default); on cache-warm
+# runs cases fire faster than the next tick. Up to 5s budget.
+if ! proof_wait_for_sql 5 "SELECT 1 FROM ${DATASET} LIMIT 0"; then
+    proof_skip "$CASE_ID" "queryd view ${DATASET} never appeared in 5s" \
+        "queryd refresh ticker may be stalled or 03_ingest registration failed"
+    return 0 2>/dev/null || exit 0
+fi
+
 # Iterate the 5 queries.
 n=$(jq '.queries | length' "$EXPECTED_FILE")
 for i in $(seq 0 $((n-1))); do