chore: implement rdb init project structure

tests/test_templates.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from rdb_discovery.templates import write_file_if_missing
+from rdb_discovery.templates import CONTEXT_FILES, write_file_if_missing
 
 
 def test_write_file_if_missing(tmp_path: Path) -> None:
@@ -8,3 +8,31 @@ def test_write_file_if_missing(tmp_path: Path) -> None:
     assert (tmp_path / "context" / "test.md").read_text(encoding="utf-8") == "hello"
     assert write_file_if_missing(tmp_path, "context/test.md", "changed") is False
     assert (tmp_path / "context" / "test.md").read_text(encoding="utf-8") == "hello"
+
+
+def test_all_context_files_have_content() -> None:
+    for path, content in CONTEXT_FILES.items():
+        assert content.strip(), f"Empty content for {path}"
+
+
+def test_init_creates_all_files(tmp_path: Path) -> None:
+    for relative_path, content in CONTEXT_FILES.items():
+        write_file_if_missing(tmp_path, relative_path, content)
+
+    for relative_path in CONTEXT_FILES:
+        assert (tmp_path / relative_path).exists(), f"Missing {relative_path}"
+
+
+def test_init_skips_existing_files(tmp_path: Path) -> None:
+    skipped = []
+
+    for relative_path, content in CONTEXT_FILES.items():
+        target = tmp_path / relative_path
+        target.parent.mkdir(parents=True, exist_ok=True)
+        target.write_text("existing", encoding="utf-8")
+        result = write_file_if_missing(tmp_path, relative_path, content)
+        if not result:
+            skipped.append(relative_path)
+
+    assert skipped == list(CONTEXT_FILES)
+    assert (tmp_path / "TASKS.md").read_text(encoding="utf-8") == "existing"