Implement Vault secret cache system

New scripts:
- vault-cache.sh: Main cache manager (sync/get/list/status/invalidate)
- vault-env.sh: Sourceable environment with quick accessor functions
- vault-api-cached.sh: Drop-in replacement for vault_api.sh using cache
- nocodb-api.sh: NocoDB API wrapper using cached token
- qdrant-api.sh: Qdrant API wrapper using cached key
- README-vault-cache.md: Documentation

Updated scripts:
- vault_grist_api.sh: Now uses vault cache
- checks/check-memory-table.sh: Uses vault cache
- utils/get-columns.sh: Uses vault cache
- utils/update-type-col.sh: Uses vault cache

Features:
- 29 secrets cached from Vault (6 categories)
- Auto-refresh on stale entries (1hr TTL)
- Vault token cached for 24h
- Restricted permissions (700/600) on cache files
- Fallback to direct Vault API if cache miss

scripts/nocodb-api.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# nocodb-api.sh - NocoDB API wrapper using vault cache
+# Usage: source this file or call its functions
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${SCRIPT_DIR}/vault-env.sh"
+
+NOCO_URL="http://192.168.25.5:8080"
+NOCO_TOKEN=$(vault_nocodb_token)
+NOCO_TABLE_ID=$(vault_nocodb_table_id)
+
+if [ -z "$NOCO_TOKEN" ]; then
+    echo "Error: Could not retrieve NocoDB token from vault cache"
+    return 1 2>/dev/null || exit 1
+fi
+
+# Make NocoDB API calls
+nocodb_api() {
+    local method="${1:-GET}"
+    local endpoint="$2"
+    local payload="${3:-}"
+    
+    local headers=(-H "xc-token: ${NOCO_TOKEN}" -H "Content-Type: application/json")
+    
+    if [ "$method" = "GET" ]; then
+        curl -sk "${headers[@]}" "${NOCO_URL}${endpoint}"
+    else
+        curl -sk -X "$method" "${headers[@]}" -d "$payload" "${NOCO_URL}${endpoint}"
+    fi
+}
+
+# Common operations
+nocodb_get_leads() {
+    nocodb_api GET "/api/v1/db/data/noco/Sales/${NOCO_TABLE_ID}"
+}
+
+nocodb_get_tables() {
+    nocodb_api GET "/api/v2/meta/bases"
+}
+
+# Export
+export -f nocodb_api nocodb_get_leads nocodb_get_tables
+export NOCO_URL NOCO_TOKEN NOCO_TABLE_ID