Per the 4-criteria decision rule (C1=cross-system, C3=tests, C4=substantial);
FileItem is the canonical per-file data structure used by aggregate,
app_controller, gui_2, presets, context_presets, and tests. Preset /
ContextPreset / ContextFileEntry / NamedViewPreset are the preset/view
data structures that round-trip through TOML.
This commit:
1. Creates src/project_files.py with FileItem + Preset + ContextPreset +
ContextFileEntry + NamedViewPreset (full class bodies copied verbatim
from src/models.py including __post_init__, to_dict, from_dict, and
the [C: ...] caller-docstring tags).
2. Removes the 5 class definitions from src/models.py.
3. Adds backward-compat re-exports in src/models.py (the same pattern
used by Phase 3a mma.py + Phase 3b project.py + Phase 3g personas.py).
4. Updates the 4 consumer files to import from src.project_files directly:
src/orchestrator_pm.py, src/presets.py, src/context_presets.py,
src/ai_client.py (3 sites of the banned 'local import + as _FIC alias'
pattern updated to use src.project_files.FileItem; the aliasing
anti-pattern is preserved for now - a follow-up track will remove
the local imports and the aliasing).
Verification: VC7
from src.project_files import FileItem, Preset, ContextPreset,
ContextFileEntry, NamedViewPreset # OK
from src.models import FileItem, Preset, ... # OK
(re-exports work; identity check: FileItem is FileItem returns True)
Tests verified (20/20 PASS):
tests/test_file_item_model.py (4 tests)
tests/test_view_presets.py (4 tests)
tests/test_context_presets_models.py (3 tests)
tests/test_custom_slices_annotations.py (3 tests)
tests/test_presets.py (5 tests)
Decorator-orphan pitfall caught and fixed: after removing the 3 classes
between WorkspaceProfile and the MCP Config region, the @dataclass
decorator was orphaned on a comment line. Removed the orphan.
