feat: replace pr_review with spec-driven CI gates and pr-review skill

Add validate_spec, check_pr_size, fast_molecule, nightly_gate, and
create_dependency_pr CI modules. Remove the monolithic pr_review module
and its tests. Replace pr_review CI steps with validate_spec + check_pr_size
+ curl-based APPROVE. Add spec-driven-development and pr-review skills.
Remove dead get_reviewer_token. Update translations and AGENTS.md.

Closes DEVX-155

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

tests/unit/test_fast_molecule.py

@@ -0,0 +1,82 @@
+"""Unit tests for devx.ci.fast_molecule."""
+
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+from click.testing import CliRunner
+
+from devx.ci.fast_molecule import (
+    build_molecule_commands,
+    cli,
+    get_molecule_scenarios,
+)
+
+
+class TestGetMoleculeScenarios:
+    def test_finds_scenarios(self, tmp_path: Path) -> None:
+        roles_dir = tmp_path / "ansible" / "roles" / "myrole" / "molecule"
+        roles_dir.mkdir(parents=True)
+        (roles_dir / "default").mkdir()
+        (roles_dir / "default" / "molecule.yml").write_text("name: default")
+        (roles_dir / "full").mkdir()
+        (roles_dir / "full" / "molecule.yml").write_text("name: full")
+        (roles_dir / "no_scenario").mkdir()  # No molecule.yml
+
+        scenarios = get_molecule_scenarios("myrole", str(tmp_path / "ansible" / "roles"))
+        assert sorted(scenarios) == ["default", "full"]
+
+    def test_returns_empty_when_no_molecule_dir(self, tmp_path: Path) -> None:
+        scenarios = get_molecule_scenarios("nonexistent", str(tmp_path / "ansible" / "roles"))
+        assert scenarios == []
+
+
+class TestBuildMoleculeCommands:
+    def test_builds_commands_for_roles(self, tmp_path: Path) -> None:
+        roles_dir = tmp_path / "ansible" / "roles"
+        for role in ["role_a", "role_b"]:
+            mol_dir = roles_dir / role / "molecule" / "default"
+            mol_dir.mkdir(parents=True)
+            (mol_dir / "molecule.yml").write_text("name: default")
+
+        commands = build_molecule_commands({"role_a", "role_b"}, str(roles_dir))
+        assert len(commands) == 2
+        assert all("molecule test -s default" in c for c in commands)
+        assert all("--destroy=never" in c for c in commands)
+        assert all("ubuntu-2604" in c for c in commands)
+
+    def test_empty_when_no_scenarios(self, tmp_path: Path) -> None:
+        commands = build_molecule_commands({"nonexistent"}, str(tmp_path / "ansible" / "roles"))
+        assert commands == []
+
+    def test_empty_when_no_roles(self) -> None:
+        assert build_molecule_commands(set()) == []
+
+
+class TestCli:
+    @patch("devx.ci.fast_molecule.get_changed_files")
+    def test_no_changes(self, mock_get: MagicMock) -> None:
+        mock_get.return_value = []
+        runner = CliRunner()
+        result = runner.invoke(cli, ["--base", "origin/master", "--head", "HEAD"])
+        assert result.exit_code == 0
+        assert "No files changed" in result.output
+
+    @patch("devx.ci.fast_molecule.detect_changed_roles")
+    @patch("devx.ci.fast_molecule.get_changed_files")
+    def test_no_ansible_changes(self, mock_get: MagicMock, mock_detect: MagicMock) -> None:
+        mock_get.return_value = ["src/main.py", "README.md"]
+        mock_detect.return_value = set()
+        runner = CliRunner()
+        result = runner.invoke(cli, ["--base", "origin/master", "--head", "HEAD"])
+        assert result.exit_code == 0
+        assert "No Ansible roles changed" in result.output
+
+    @patch("devx.ci.fast_molecule.detect_changed_roles")
+    @patch("devx.ci.fast_molecule.get_changed_files")
+    def test_detects_changed_roles(self, mock_get: MagicMock, mock_detect: MagicMock) -> None:
+        mock_get.return_value = ["ansible/roles/sso_bridge/tasks/main.yml"]
+        mock_detect.return_value = {"sso_bridge"}
+        runner = CliRunner()
+        result = runner.invoke(cli, ["--base", "origin/master", "--head", "HEAD"])
+        assert result.exit_code == 0
+        assert "sso_bridge" in result.output