style: refactor error handling in rib modules and improve RTL naming conventions

- Renamed error signals in rib2ribp, rib_error_slave, ribp2axi4, and ribp2rib modules for consistency.
- Updated state machine logic to use new error signal names.
- Enhanced RTL style checking scripts to enforce naming conventions and positional parameter connections.
- Introduced migration scripts to convert positional instances to named connections and shorten local identifiers.
- Added tests to validate migration scripts and ensure correct functionality.

tests/test_rtl_connection_migration.py

@@ -0,0 +1,77 @@
+from __future__ import annotations
+
+import subprocess
+import sys
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SCRIPT = ROOT / "scripts/migrate_rtl_connections.py"
+NAME_SCRIPT = ROOT / "scripts/migrate_rtl_names.py"
+
+
+def test_migrates_exact_positional_instance(tmp_path: Path) -> None:
+    (tmp_path / "rtl/ip/example.sv").parent.mkdir(parents=True)
+    (tmp_path / "rtl/ip/example.sv").write_text(
+        "module dffr #(parameter WIDTH = 1) (input logic clk_i, input logic rst_n_i, "
+        "input logic dat_i, output logic dat_o); endmodule\n"
+        "module top(input logic clk_i, output logic data_o);\n"
+        "  dffr #(1) u_reg (clk_i, 1'b1, 1'b0, data_o);\n"
+        "endmodule\n",
+        encoding="utf-8",
+    )
+    result = subprocess.run(
+        [sys.executable, str(SCRIPT), "--root", str(tmp_path), "--apply"],
+        text=True,
+        capture_output=True,
+        check=False,
+    )
+    assert result.returncode == 0, result.stderr
+    source = (tmp_path / "rtl/ip/example.sv").read_text(encoding="utf-8")
+    assert ".WIDTH(1)" in source
+    assert ".clk_i(clk_i)" in source
+    assert ".dat_o(data_o)" in source
+
+
+def test_leaves_ambiguous_instance_unchanged(tmp_path: Path) -> None:
+    (tmp_path / "rtl/ip/example.sv").parent.mkdir(parents=True)
+    (tmp_path / "rtl/ip/example.sv").write_text(
+        "module dffr (input logic clk_i, input logic rst_n_i); endmodule\n"
+        "module top(input logic clk_i);\n"
+        "  dffr u_reg (clk_i, 1'b1, 1'b0);\n"
+        "endmodule\n",
+        encoding="utf-8",
+    )
+    before = (tmp_path / "rtl/ip/example.sv").read_text(encoding="utf-8")
+    result = subprocess.run(
+        [sys.executable, str(SCRIPT), "--root", str(tmp_path), "--apply"],
+        text=True,
+        capture_output=True,
+        check=False,
+    )
+    assert result.returncode == 0, result.stderr
+    assert "ambiguous=1" in result.stdout
+    assert (tmp_path / "rtl/ip/example.sv").read_text(encoding="utf-8") == before
+
+
+def test_shortens_local_names_but_not_ports(tmp_path: Path) -> None:
+    (tmp_path / "rtl/ip/example.sv").parent.mkdir(parents=True)
+    path = tmp_path / "rtl/ip/example.sv"
+    path.write_text(
+        "module example(input logic request_i, output logic response_o);\n"
+        "  logic s_command_enable;\n"
+        "  assign response_o = request_i & s_command_enable;\n"
+        "endmodule\n",
+        encoding="utf-8",
+    )
+    result = subprocess.run(
+        [sys.executable, str(NAME_SCRIPT), "--root", str(tmp_path), "--apply"],
+        text=True,
+        capture_output=True,
+        check=False,
+    )
+    assert result.returncode == 0, result.stderr
+    source = path.read_text(encoding="utf-8")
+    assert "s_cmd_en" in source
+    assert "request_i" in source
+    assert "response_o" in source