Port all 16 internal import sites from re-exporting
via `piker.data._sharedmem` shim to importing core
shm types directly from `tractor.ipc._shm`.
Deats,
- `ShmArray` now imported from tractor in 10 files.
- `_Token` renamed to `NDToken` everywhere (5 files).
- `attach_shm_array` → `attach_shm_ndarray` at all
call sites.
- `data/__init__.py` sources `ShmArray`,
`get_shm_token` from tractor; keeps
`open/attach_shm_array` as public API aliases.
- Trim shim to only piker-specific wrappers:
`_make_token()`, `maybe_open_shm_array()`,
`try_read()`.
- Drop `Optional` usage in shim, use `|None`.
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Replace the ~716 line `piker.data._sharedmem` mod with a thin re-export
shim consuming `tractor.ipc._shm` types directly, since the `tractor`
version is the refined factoring of piker's original impl.
Deats,
- Re-export `SharedInt`, `ShmArray`, `ShmList`, `get_shm_token`,
`_known_tokens` directly
- Alias renames: `NDToken as _Token`, `open_shm_ndarray as
open_shm_array`, `attach_shm_ndarray as attach_shm_array`
- Keep `_make_token()` wrapper for piker's default dtype fallback to
`def_iohlcv_fields`
- Keep `maybe_open_shm_array()` wrapper preserving piker's historical
defaults (`readonly=False`, `append_start_index=None`)
- Keep `try_read()` race-condition guard (not in `tractor`)
All 13 import sites across piker continue to work unchanged with no
modifications needed.
(this patch was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi