Make the first RAG slice executable without risking production data

The Stage 1 foundation now proves provider contracts with mocks and validates PostgreSQL/pgvector ingestion, approval binding, retrieval, reranking, and idempotency using only synthetic data. Live Bailian validation remains gated on rotating the exposed key.

Constraint: The key shown in chat is compromised and cannot be used or committed

Rejected: Mark Stage 1 complete from mock and offline results | real three-model smoke is still required

Confidence: high

Scope-risk: moderate

Reversibility: clean

Directive: Do not enable real-data ingestion until Stage 3 cloud approval and outbound manifest controls are enforced end to end

Tested: make verify; 41 pytest tests; strict mypy; Ruff; Compose config; pinned image build; empty-volume migration; role denial; two idempotent 20-vector seeds; database restart persistence

Not-tested: Live Bailian calls require a newly rotated key; React product UI is not implemented

scripts/init-local-secrets.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+umask 077
+secret_dir="${SECRET_DIR:-secrets}"
+mkdir -p "$secret_dir"
+chmod 700 "$secret_dir"
+
+generate_secret() {
+  local name="$1"
+  local path="$secret_dir/$name"
+  if [[ -s "$path" ]]; then
+    printf 'Kept existing local secret: %s\n' "$path"
+    return
+  fi
+  openssl rand -hex 32 >"$path"
+  chmod 600 "$path"
+  printf 'Created local secret: %s\n' "$path"
+}
+
+generate_secret postgres_bootstrap_password
+generate_secret postgres_migrator_password
+generate_secret postgres_app_password
+
+if [[ "${1:-}" == "--with-bailian" ]]; then
+  bailian_path="$secret_dir/bailian_api_key"
+  if [[ -s "$bailian_path" ]]; then
+    printf 'Kept existing local secret: %s\n' "$bailian_path"
+    exit 0
+  fi
+
+  printf 'Paste the NEWLY ROTATED Bailian API key (input is hidden): ' >&2
+  IFS= read -r -s bailian_key
+  printf '\n' >&2
+  if [[ ! "$bailian_key" =~ ^sk-[A-Za-z0-9_-]{20,}$ ]]; then
+    printf 'Refused: the value does not look like a Bailian API key.\n' >&2
+    exit 2
+  fi
+  printf '%s' "$bailian_key" >"$bailian_path"
+  chmod 600 "$bailian_path"
+  unset bailian_key
+  printf 'Created local Bailian secret without echoing its value: %s\n' "$bailian_path"
+else
+  printf 'Bailian key not created. Rotate the exposed key, then rerun with --with-bailian.\n'
+fi