feat: Created the coder and sql agents

assets/agents/sql/tools.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+set -e
+
+# @meta require-tools usql
+# @env LLM_OUTPUT=/dev/stdout The output path
+# @env LLM_AGENT_VAR_DSN! The database connection url. e.g. pgsql://user:pass@host:port 
+
+PROMPT_UTILS="${LLM_ROOT_DIR:-$(dirname "${BASH_SOURCE[0]}")/..}/utils/prompt-utils.sh"
+# shellcheck disable=SC1090
+source "$PROMPT_UTILS"
+
+# @cmd Execute a SELECT query
+# @option --query!                  SELECT SQL query to execute
+read_query() {
+    # shellcheck disable=SC2154
+    if ! grep -qi '^select' <<<"$argc_query"; then
+        error "only SELECT queries are allowed" >&2
+        exit 1
+    fi
+
+    _run_sql "$argc_query"
+}
+
+# @cmd Execute an SQL query
+# @option --query!                  SQL query to execute
+write_query() {
+    guard_operation "Execute SQL?"
+    _run_sql "$argc_query"
+}
+
+# @cmd List all tables
+list_tables() {
+    _run_sql "\dt+"
+}
+
+# @cmd Get the schema information for a specific table
+# @option --table-name!             Name of the table to describe
+describe_table() {
+    # shellcheck disable=SC2154
+    _run_sql "\d $argc_table_name"
+}
+
+_run_sql() {
+    usql "$LLM_AGENT_VAR_DSN" -c "$1" >> "$LLM_OUTPUT"
+}