refactor: refactor RTL paths and update test descriptions

- Updated RTL paths in various files to remove the 'ribp' prefix, reflecting the new directory structure.
- Modified test descriptions to remove version indicators (e.g., V2, V3) for clarity and consistency.
- Adjusted file references in scripts and tests to align with the new peripheral and multimedia directory structure.
- Added a new test to ensure repository layout invariants, confirming the absence of deprecated paths.

scripts/README.md

@@ -6,7 +6,7 @@ quality checks, metrics, packaging, and cleanup.
 
 Scripts are part of the build contract. Prefer existing helpers over ad-hoc
 shell behavior, preserve structured JSON results, and keep setup/download
-behavior controlled by `config/dependencies.lock.json`.
+behavior controlled by `dependencies/dependencies.lock.json`.
 
 `development_environment.py` is the shared Docker, Nix, and manual bootstrap
 entry point. It installs only the checksum-verified open-source tool bundles and

scripts/dependency_lock.py

@@ -11,7 +11,7 @@ from typing import Any
 
 
 ROOT = Path(__file__).resolve().parents[1]
-DEFAULT_LOCK = ROOT / "config/dependencies.lock.json"
+DEFAULT_LOCK = ROOT / "dependencies/dependencies.lock.json"
 DEFAULT_FLAKE_LOCK = ROOT / "flake.lock"
 NIX_SRI_HASH = re.compile(r"sha256-[A-Za-z0-9+/]{43}=")
 OCI_DIGEST = re.compile(r"sha256:[0-9a-f]{64}")

scripts/publish_fatfs_artifact.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Publish the archive pinned by config/dependencies.lock.json to retroSoC/artifact.
+# Publish the archive pinned by dependencies/dependencies.lock.json to retroSoC/artifact.
 
 set -euo pipefail