feat(rag): git-based import sources — BOR_GIT_SOURCES repos cloned (first run, --depth 1) or pulled (--ff-only) into BOR_SOURCES_DIR/<repo>/ then indexed; --source still wins; a failed sync aborts before importing anything

tests/unit/test_config.py

@@ -92,6 +92,53 @@ def test_import_extensions_rejects_empty(monkeypatch) -> None:
         _settings()
 
 
+def test_git_sources_default_empty_and_sources_dir_default() -> None:
+    """Phase 28: no git sources by default (backwards-compatible with the
+    ``--source`` / ``DEFAULT_SOURCES`` fallback); the clone location stays
+    a raw string (``~`` is expanded by the import script, not the setting)."""
+    s = _settings()
+    assert s.git_sources == ""
+    assert s.git_source_list == []
+    assert s.sources_dir == "~/bor-sources"
+
+
+def test_git_sources_env_override_parses_comma_separated_list(
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """``BOR_GIT_SOURCES`` is a raw CSV: entries are trimmed and empty
+    entries dropped; URLs are stored untouched (no scheme parsing here)."""
+    monkeypatch.setenv(
+        "BOR_GIT_SOURCES",
+        "https://github.com/user/homelab.git, "
+        " git@github.com:user/deployments.git ,,  https://git.reeseapps.com/x/y.git ",
+    )
+    s = _settings()
+    # The raw CSV string is preserved untouched (no parsing in the setting).
+    assert s.git_sources == (
+        "https://github.com/user/homelab.git, "
+        " git@github.com:user/deployments.git ,,  https://git.reeseapps.com/x/y.git "
+    )
+    assert s.git_source_list == [
+        "https://github.com/user/homelab.git",
+        "git@github.com:user/deployments.git",
+        "https://git.reeseapps.com/x/y.git",
+    ]
+
+
+def test_git_sources_whitespace_only_yields_empty_list(monkeypatch) -> None:
+    """A configured-but-blank value behaves the same as unset: no git
+    sources, so the script falls back to its legacy local defaults."""
+    monkeypatch.setenv("BOR_GIT_SOURCES", "  , , ")
+    s = _settings()
+    assert s.git_source_list == []
+
+
+def test_sources_dir_env_override_is_raw_string(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("BOR_SOURCES_DIR", "/data/bor/sources")
+    s = _settings()
+    assert s.sources_dir == "/data/bor/sources"
+
+
 def test_suggestions_default_is_three_plus_real_questions() -> None:
     s = _settings()
     assert len(s.suggestions) >= 3