Every executeRaw/.unsafe site that bound JSON.stringify(x) to a bare positional
jsonb cast double-encodes on real Postgres (same class as #2339). Sweep them all
to the text::jsonb form across query-cache, sources-ops, llm-base,
calibration-profile, impact-capture, subagent, receipt-write, traversal-cache,
symbol-resolver, and the agent/sources commands. Adds scripts/check-jsonb-params.mjs
(AST-lite scanner for the positional form the legacy template grep misses, incl.
generic-typed calls), wired into check-jsonb-pattern.sh, with a self-test. PGLite's
native db.query is not scanned — it parses text to jsonb natively, so the bug can't
occur there.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
