Factor `.claude/skills/` into proper subdirs w/ frontmatter

Reorganize all 5 skills from loose `.md` files (and one partially-formatted `commit_msg/`) into the documented `subdirectory/SKILL.md` format with YAML frontmatter. Deats, - `commit_msg/` -> `commit-msg/` w/ enhanced frontmatter: `argument-hint`, `disable-model-invocation`, `allowed-tools`, dynamic `!` context injection for staged diff + recent log, `$ARGUMENTS` support - `piker_profiling.md` -> `piker-profiling/SKILL.md` + `patterns.md` for detailed profiling patterns - `piker_slang_and_communication_style.md` -> `piker-slang/SKILL.md` + `dictionary.md` + `examples.md` - `pyqtgraph_rendering_optimization.md` -> `pyqtgraph-optimization/SKILL.md` + `examples.md` - `timeseries_numpy_polars_optimization.md` -> `timeseries-optimization/SKILL.md` + `numpy-patterns.md` + `polars-patterns.md` Also, - all background skills use `user-invocable: false` for auto-application when relevant. - use a hyphen convention across all dir names. - content is now split into supporting files linked from each `SKILL.md`. (this patch was generated in some part by [`claude-code`][claude-code-gh]) [claude-code-gh]: https://github.com/anthropics/claude-code
Ignore `gish` locally cached issue `.md` files
2026-02-27 12:53:10 -05:00 · 2026-02-27 12:53:09 -05:00 · 2026-02-27 12:52:51 -05:00 · 2026-02-27 12:52:21 -05:00 · 2026-02-27 12:52:04 -05:00 · 2026-02-27 12:52:01 -05:00
9 changed files with 68 additions and 715 deletions
--- a/.gitignore
+++ b/.gitignore
@ -116,15 +116,7 @@ ENV/
 # :Obsession .
 Session.vim
 # gitea local `.md`-files
 # TODO? would this be handy to also commit and sync with
 # wtv git hosting service tho?
 gitea/
 # macOS Finder metadata
 **/.DS_Store
 # LLM conversations that should remain private
 docs/conversations/
--- a/docs/macos/README.md
+++ b/docs/macos/README.md
@ -1,42 +0,0 @@
 # macOS Documentation
 This directory contains macOS-specific documentation for the piker project.
 ## Contents
 - **[compatibility-fixes.md](compatibility-fixes.md)** - Comprehensive guide to macOS compatibility issues and their solutions
 ## Quick Start
 If you're experiencing issues running piker on macOS, check the compatibility fixes guide:
 ```bash
 cat docs/macos/compatibility-fixes.md
 ```
 ## Key Issues Addressed
 1. **Socket Credential Passing** - macOS uses different socket options than Linux
 2. **Shared Memory Name Limits** - macOS limits shm names to 31 characters
 3. **Cleanup Race Conditions** - Handling concurrent shared memory cleanup
 4. **Async Runtime Coordination** - Proper trio/asyncio shutdown on macOS
 ## Platform Information
 - **Tested on**: macOS 15.0+ (Darwin 25.0.0)
 - **Python**: 3.13+
 - **Architecture**: ARM64 (Apple Silicon) and x86_64 (Intel)
 ## Related Projects
 These fixes may also apply to:
 - [tractor](https://github.com/goodboy/tractor) - The actor runtime used by piker
 - Other projects using tractor on macOS
 ## Contributing
 Found additional macOS issues? Please:
 1. Document the error and its cause
 2. Provide a solution with code examples
 3. Test on multiple macOS versions
 4. Submit a PR updating this documentation
--- a/docs/macos/compatibility-fixes.md
+++ b/docs/macos/compatibility-fixes.md
@ -1,504 +0,0 @@
 # macOS Compatibility Fixes for Piker/Tractor
 This guide documents macOS-specific issues encountered when running `piker` on macOS and their solutions. These fixes address platform differences between Linux and macOS in areas like socket credentials, shared memory naming, and async runtime coordination.
 ## Table of Contents
 1. [Socket Credential Passing](#1-socket-credential-passing)
 2. [Shared Memory Name Length Limits](#2-shared-memory-name-length-limits)
 3. [Shared Memory Cleanup Race Conditions](#3-shared-memory-cleanup-race-conditions)
 4. [Async Runtime (Trio/AsyncIO) Coordination](#4-async-runtime-trioasyncio-coordination)
 ---
 ## 1. Socket Credential Passing
 ### Problem
 On Linux, `tractor` uses `SO_PASSCRED` and `SO_PEERCRED` socket options for Unix domain socket credential passing. macOS doesn't support these constants, causing `AttributeError` when importing.
 ```python
 # Linux code that fails on macOS
 from socket import SO_PASSCRED, SO_PEERCRED  # AttributeError on macOS
 ```
 ### Error Message
 ```
 AttributeError: module 'socket' has no attribute 'SO_PASSCRED'
 ```
 ### Root Cause
 - **Linux**: Uses `SO_PASSCRED` (to enable credential passing) and `SO_PEERCRED` (to retrieve peer credentials)
 - **macOS**: Uses `LOCAL_PEERCRED` (value `0x0001`) instead, and doesn't require enabling credential passing
 ### Solution
 Make the socket credential imports platform-conditional:
 **File**: `tractor/ipc/_uds.py` (or equivalent in `piker` if duplicated)
 ```python
 import sys
 from socket import (
    socket,
    AF_UNIX,
    SOCK_STREAM,
 )
 # Platform-specific credential passing constants
 if sys.platform == 'linux':
    from socket import SO_PASSCRED, SO_PEERCRED
 elif sys.platform == 'darwin':  # macOS
    # macOS uses LOCAL_PEERCRED instead of SO_PEERCRED
    # and doesn't need SO_PASSCRED
    LOCAL_PEERCRED = 0x0001
    SO_PEERCRED = LOCAL_PEERCRED  # Alias for compatibility
    SO_PASSCRED = None  # Not needed on macOS
 else:
    # Other platforms - may need additional handling
    SO_PASSCRED = None
    SO_PEERCRED = None
 # When creating a socket
 if SO_PASSCRED is not None:
    sock.setsockopt(SOL_SOCKET, SO_PASSCRED, 1)
 # When getting peer credentials
 if SO_PEERCRED is not None:
    creds = sock.getsockopt(SOL_SOCKET, SO_PEERCRED, struct.calcsize('3i'))
 ```
 ### Implementation Notes
 - The `LOCAL_PEERCRED` value `0x0001` is specific to macOS (from `<sys/un.h>`)
 - macOS doesn't require explicitly enabling credential passing like Linux does
 - Consider using `ctypes` or `cffi` for a more robust solution if available
 ---
 ## 2. Shared Memory Name Length Limits
 ### Problem
 macOS limits POSIX shared memory names to **31 characters** (defined as `PSHMNAMLEN` in `<sys/posix_shm_internal.h>`). Piker generates long descriptive names that exceed this limit, causing `OSError`.
 ```python
 # Long name that works on Linux but fails on macOS
 shm_name = "piker_quoter_tsla.nasdaq.ib_hist_1m"  # 39 chars - too long!
 ```
 ### Error Message
 ```
 OSError: [Errno 63] File name too long: '/piker_quoter_tsla.nasdaq.ib_hist_1m'
 ```
 ### Root Cause
 - **Linux**: Supports shared memory names up to 255 characters
 - **macOS**: Limits to 31 characters (including leading `/`)
 ### Solution
 Implement automatic name shortening for macOS while preserving the original key for lookups:
 **File**: `piker/data/_sharedmem.py`
 ```python
 import hashlib
 import sys
 def _shorten_key_for_macos(key: str) -> str:
    '''
    macOS has a 31 character limit for POSIX shared memory names.
    Hash long keys to fit within this limit while maintaining uniqueness.
    '''
    # macOS shm_open() has a 31 char limit (PSHMNAMLEN)
    # Use format: /p_<hash16> where hash is first 16 hex chars of sha256
    # This gives us: / + p_ + 16 hex chars = 19 chars, well under limit
    # We keep the 'p' prefix to indicate it's from piker
    if len(key) <= 31:
        return key
    # Create a hash of the full key
    key_hash = hashlib.sha256(key.encode()).hexdigest()[:16]
    short_key = f'p_{key_hash}'
    return short_key
 class _Token(Struct, frozen=True):
    '''
    Internal representation of a shared memory "token"
    which can be used to key a system wide post shm entry.
    '''
    shm_name: str  # actual OS-level name (may be shortened on macOS)
    shm_first_index_name: str
    shm_last_index_name: str
    dtype_descr: tuple
    size: int  # in struct-array index / row terms
    key: str | None = None  # original descriptive key (for lookup)
    def __eq__(self, other) -> bool:
        '''
        Compare tokens based on shm names and dtype, ignoring the key field.
        The key field is only used for lookups, not for token identity.
        '''
        if not isinstance(other, _Token):
            return False
        return (
            self.shm_name == other.shm_name
            and self.shm_first_index_name == other.shm_first_index_name
            and self.shm_last_index_name == other.shm_last_index_name
            and self.dtype_descr == other.dtype_descr
            and self.size == other.size
        )
    def __hash__(self) -> int:
        '''Hash based on the same fields used in __eq__'''
        return hash((
            self.shm_name,
            self.shm_first_index_name,
            self.shm_last_index_name,
            self.dtype_descr,
            self.size,
        ))
 def _make_token(
    key: str,
    size: int,
    dtype: np.dtype | None = None,
 ) -> _Token:
    '''
    Create a serializable token that uniquely identifies a shared memory segment.
    '''
    if dtype is None:
        dtype = def_iohlcv_fields
    # On macOS, shorten long keys to fit the 31-char limit
    if sys.platform == 'darwin':
        shm_name = _shorten_key_for_macos(key)
        shm_first = _shorten_key_for_macos(key + "_first")
        shm_last = _shorten_key_for_macos(key + "_last")
    else:
        shm_name = key
        shm_first = key + "_first"
        shm_last = key + "_last"
    return _Token(
        shm_name=shm_name,
        shm_first_index_name=shm_first,
        shm_last_index_name=shm_last,
        dtype_descr=tuple(np.dtype(dtype).descr),
        size=size,
        key=key,  # Store original key for lookup
    )
 ```
 ### Key Design Decisions
 1. **Hash-based shortening**: Uses SHA256 to ensure uniqueness and avoid collisions
 2. **Preserve original key**: Store the original descriptive key in the `_Token` for debugging and lookups
 3. **Custom equality**: The `__eq__` and `__hash__` methods ignore the `key` field to ensure tokens are compared by their actual shm properties
 4. **Platform detection**: Only applies shortening on macOS (`sys.platform == 'darwin'`)
 ### Edge Cases to Consider
 - Token serialization across processes (the `key` field must survive IPC)
 - Token lookup in dictionaries and caches
 - Debugging output (use `key` field for human-readable names)
 ---
 ## 3. Shared Memory Cleanup Race Conditions
 ### Problem
 During teardown, shared memory segments may be unlinked by one process while another is still trying to clean them up, causing `FileNotFoundError` to crash the application.
 ### Error Message
 ```
 FileNotFoundError: [Errno 2] No such file or directory: '/p_74c86c7228dd773b'
 ```
 ### Root Cause
 In multi-process architectures like `tractor`, multiple processes may attempt to clean up shared resources simultaneously. Race conditions during shutdown can cause:
 1. Process A unlinks the shared memory
 2. Process B tries to unlink the same memory → `FileNotFoundError`
 3. Uncaught exception crashes Process B
 ### Solution
 Add defensive error handling to catch and log cleanup races:
 **File**: `piker/data/_sharedmem.py`
 ```python
 class ShmArray:
    # ... existing code ...
    def destroy(self) -> None:
        '''
        Destroy the shared memory segment and cleanup OS resources.
        '''
        if _USE_POSIX:
            # We manually unlink to bypass all the "resource tracker"
            # nonsense meant for non-SC systems.
            shm = self._shm
            name = shm.name
            try:
                shm_unlink(name)
            except FileNotFoundError:
                # Might be a teardown race where another process
                # already unlinked it - this is fine, just log it
                log.warning(f'Shm for {name} already unlinked?')
        # Also cleanup the index counters
        if hasattr(self, '_first'):
            try:
                self._first.destroy()
            except FileNotFoundError:
                log.warning(f'First index shm already unlinked?')
        if hasattr(self, '_last'):
            try:
                self._last.destroy()
            except FileNotFoundError:
                log.warning(f'Last index shm already unlinked?')
 class SharedInt:
    # ... existing code ...
    def destroy(self) -> None:
        if _USE_POSIX:
            # We manually unlink to bypass all the "resource tracker"
            # nonsense meant for non-SC systems.
            name = self._shm.name
            try:
                shm_unlink(name)
            except FileNotFoundError:
                # might be a teardown race here?
                log.warning(f'Shm for {name} already unlinked?')
 ```
 ### Implementation Notes
 - This fix is platform-agnostic but particularly important on macOS where the shortened names make debugging harder
 - The warnings help identify cleanup races during development
 - Consider adding metrics/counters if cleanup races become frequent
 ---
 ## 4. Async Runtime (Trio/AsyncIO) Coordination
 ### Problem
 The `TrioTaskExited` error occurs when trio tasks are cancelled while asyncio tasks are still running, indicating improper coordination between the two async runtimes.
 ### Error Message
 ```
 tractor._exceptions.TrioTaskExited: but the child `asyncio` task is still running?
 >>
 |_<Task pending name='Task-2' coro=<wait_on_coro_final_result()> ...>
 ```
 ### Root Cause
 `tractor` uses "guest mode" to run trio as a guest in asyncio's event loop (or vice versa). The error occurs when:
 1. A trio task is cancelled (e.g., user closes the UI)
 2. The cancellation propagates to cleanup handlers
 3. Cleanup tries to exit while asyncio tasks are still running
 4. The `translate_aio_errors` context manager detects this inconsistent state
 ### Current State
 This issue is **partially resolved** by the other fixes (socket credentials and shared memory), which eliminate the underlying errors that trigger premature cancellation. However, it may still occur in edge cases.
 ### Potential Solutions
 #### Option 1: Improve Cancellation Propagation (Tractor-level)
 **File**: `tractor/to_asyncio.py`
 ```python
 async def translate_aio_errors(
    chan,
    wait_on_aio_task: bool = False,
    suppress_graceful_exits: bool = False,
 ):
    '''
    Context manager to translate asyncio errors to trio equivalents.
    '''
    try:
        yield
    except trio.Cancelled:
        # When trio is cancelled, ensure asyncio tasks are also cancelled
        if wait_on_aio_task:
            # Give asyncio tasks a chance to cleanup
            await trio.lowlevel.checkpoint()
            # Check if asyncio task is still running
            if aio_task and not aio_task.done():
                # Cancel it gracefully
                aio_task.cancel()
                # Wait briefly for cancellation
                with trio.move_on_after(0.5):  # 500ms timeout
                    await wait_for_aio_task_completion(aio_task)
        raise  # Re-raise the cancellation
 ```
 #### Option 2: Proper Shutdown Sequence (Application-level)
 **File**: `piker/brokers/ib/api.py` (or similar broker modules)
 ```python
 async def load_clients_for_trio(
    client: Client,
    ...
 ) -> None:
    '''
    Load asyncio client and keep it running for trio.
    '''
    try:
        # Setup client
        await client.connect()
        # Keep alive - but make it cancellable
        await trio.sleep_forever()
    except trio.Cancelled:
        # Explicit cleanup before propagating cancellation
        log.info("Shutting down asyncio client gracefully")
        # Disconnect client
        if client.isConnected():
            await client.disconnect()
        # Small delay to let asyncio cleanup
        await trio.sleep(0.1)
        raise  # Now safe to propagate
 ```
 #### Option 3: Detection and Warning (Current Approach)
 The current code detects the issue and raises a clear error. This is acceptable if:
 1. The error is rare (only during abnormal shutdown)
 2. It doesn't cause data loss
 3. Logs provide enough info for debugging
 ### Recommended Approach
 For **piker**: Implement Option 2 (proper shutdown sequence) in broker modules where asyncio is used.
 For **tractor**: Consider Option 1 (improved cancellation propagation) as a library-level enhancement.
 ### Testing
 Test the fix by:
 ```python
 # Test graceful shutdown
 async def test_asyncio_trio_shutdown():
    async with open_channel_from(...) as (first, chan):
        # Do some work
        await chan.send(msg)
        # Trigger cancellation
        raise KeyboardInterrupt
    # Should cleanup without TrioTaskExited error
 ```
 ---
 ## Summary of Changes
 ### Files Modified in Piker
 1. **`piker/data/_sharedmem.py`**
   - Added `_shorten_key_for_macos()` function
   - Modified `_Token` class to store original `key`
   - Modified `_make_token()` to use shortened names on macOS
   - Added `FileNotFoundError` handling in `destroy()` methods
 2. **`piker/ui/_display.py`**
   - Removed assertion that checked for 'hist' in shm name (incompatible with shortened names)
 ### Files to Modify in Tractor (Recommended)
 1. **`tractor/ipc/_uds.py`**
   - Make socket credential imports platform-conditional
   - Handle macOS-specific `LOCAL_PEERCRED`
 2. **`tractor/to_asyncio.py`** (Optional)
   - Improve cancellation propagation between trio and asyncio
   - Add graceful shutdown timeout for asyncio tasks
 ### Platform Detection Pattern
 Use this pattern consistently:
 ```python
 import sys
 if sys.platform == 'darwin':  # macOS
    # macOS-specific code
    pass
 elif sys.platform == 'linux':  # Linux
    # Linux-specific code
    pass
 else:
    # Other platforms / fallback
    pass
 ```
 ### Testing Checklist
 - [ ] Test on macOS (Darwin)
 - [ ] Test on Linux
 - [ ] Test shared memory with names > 31 chars
 - [ ] Test multi-process cleanup race conditions
 - [ ] Test graceful shutdown (Ctrl+C)
 - [ ] Test abnormal shutdown (kill signal)
 - [ ] Verify no memory leaks (check `/dev/shm` on Linux, `ipcs -m` on macOS)
 ---
 ## Additional Resources
 - **macOS System Headers**:
  - `/usr/include/sys/un.h` - Unix domain socket constants
  - `/usr/include/sys/posix_shm_internal.h` - Shared memory limits
 - **Python Documentation**:
  - [`socket` module](https://docs.python.org/3/library/socket.html)
  - [`multiprocessing.shared_memory`](https://docs.python.org/3/library/multiprocessing.shared_memory.html)
 - **Trio/AsyncIO**:
  - [Trio Guest Mode](https://trio.readthedocs.io/en/stable/reference-lowlevel.html#using-guest-mode-to-run-trio-on-top-of-other-event-loops)
  - [Tractor Documentation](https://github.com/goodboy/tractor)
 ---
 ## Contributing
 When implementing these fixes in your own project:
 1. **Test thoroughly** on both macOS and Linux
 2. **Add platform guards** to prevent cross-platform breakage
 3. **Document platform-specific behavior** in code comments
 4. **Consider CI/CD** testing on multiple platforms
 5. **Handle edge cases** gracefully with proper logging
 If you find additional macOS-specific issues, please contribute to this guide!
--- a/piker/data/_sharedmem.py
+++ b/piker/data/_sharedmem.py
@ -19,11 +19,7 @@ NumPy compatible shared memory buffers for real-time IPC streaming.
 """
 from __future__ import annotations
-import hashlib
+from sys import byteorder
 from sys import (
    byteorder,
    platform,
 )
 import time
 from typing import Optional
 from multiprocessing.shared_memory import SharedMemory, _USE_POSIX
@ -109,12 +105,11 @@ class _Token(Struct, frozen=True):
    which can be used to key a system wide post shm entry.
    '''
-    shm_name: str  # actual OS-level name (may be shortened on macOS)
+    shm_name: str  # this servers as a "key" value
    shm_first_index_name: str
    shm_last_index_name: str
    dtype_descr: tuple
    size: int  # in struct-array index / row terms
    key: str | None = None  # original descriptive key (for lookup)
    @property
    def dtype(self) -> np.dtype:
@ -123,31 +118,6 @@ class _Token(Struct, frozen=True):
    def as_msg(self):
        return self.to_dict()
    def __eq__(self, other) -> bool:
        '''
        Compare tokens based on shm names and dtype, ignoring the key field.
        The key field is only used for lookups, not for token identity.
        '''
        if not isinstance(other, _Token):
            return False
        return (
            self.shm_name == other.shm_name
            and self.shm_first_index_name == other.shm_first_index_name
            and self.shm_last_index_name == other.shm_last_index_name
            and self.dtype_descr == other.dtype_descr
            and self.size == other.size
        )
    def __hash__(self) -> int:
        '''Hash based on the same fields used in __eq__'''
        return hash((
            self.shm_name,
            self.shm_first_index_name,
            self.shm_last_index_name,
            self.dtype_descr,
            self.size,
        ))
    @classmethod
    def from_msg(cls, msg: dict) -> _Token:
        if isinstance(msg, _Token):
@ -178,31 +148,6 @@ def get_shm_token(key: str) -> _Token:
    return _known_tokens.get(key)
 def _shorten_key_for_macos(key: str) -> str:
    '''
    macOS has a 31 character limit for POSIX shared memory names.
    Hash long keys to fit within this limit while maintaining uniqueness.
    '''
    # macOS shm_open() has a 31 char limit (PSHMNAMLEN)
    # Use format: /p_<hash16> where hash is first 16 hex chars of sha256
    # This gives us: / + p_ + 16 hex chars = 19 chars, well under limit
    # We keep the 'p' prefix to indicate it's from piker
    if len(key) <= 31:
        return key
    # Create a hash of the full key
    key_hash = hashlib.sha256(key.encode()).hexdigest()[:16]
    short_key = f'p_{key_hash}'
    log.debug(
        f'Shortened shm key for macOS:\n'
        f'  original: {key} ({len(key)} chars)\n'
        f'  shortened: {short_key} ({len(short_key)} chars)'
    )
    return short_key
 def _make_token(
    key: str,
    size: int,
@ -214,24 +159,12 @@ def _make_token(
    '''
    dtype = def_iohlcv_fields if dtype is None else dtype
    # On macOS, shorten keys that exceed the 31 character limit
    if platform == 'darwin':
        shm_name = _shorten_key_for_macos(key)
        shm_first = _shorten_key_for_macos(key + "_first")
        shm_last = _shorten_key_for_macos(key + "_last")
    else:
        shm_name = key
        shm_first = key + "_first"
        shm_last = key + "_last"
    return _Token(
-        shm_name=shm_name,
+        shm_name=key,
-        shm_first_index_name=shm_first,
+        shm_first_index_name=key + "_first",
-        shm_last_index_name=shm_last,
+        shm_last_index_name=key + "_last",
        dtype_descr=tuple(np.dtype(dtype).descr),
        size=size,
        key=key,  # Store original key for lookup
    )
@ -488,12 +421,7 @@ class ShmArray:
        if _USE_POSIX:
            # We manually unlink to bypass all the "resource tracker"
            # nonsense meant for non-SC systems.
-            name = self._shm.name
+            shm_unlink(self._shm.name)
            try:
                shm_unlink(name)
            except FileNotFoundError:
                # might be a teardown race here?
                log.warning(f'Shm for {name} already unlinked?')
        self._first.destroy()
        self._last.destroy()
@ -522,15 +450,8 @@ def open_shm_array(
    a = np.zeros(size, dtype=dtype)
    a['index'] = np.arange(len(a))
    # Create token first to get the (possibly shortened) shm name
    token = _make_token(
        key=key,
        size=size,
        dtype=dtype,
    )
    shm = SharedMemory(
-        name=token.shm_name,  # Use shortened name from token
+        name=key,
        create=True,
        size=a.nbytes
    )
@ -542,6 +463,12 @@ def open_shm_array(
    array[:] = a[:]
    array.setflags(write=int(not readonly))
    token = _make_token(
        key=key,
        size=size,
        dtype=dtype,
    )
    # create single entry arrays for storing an first and last indices
    first = SharedInt(
        shm=SharedMemory(
@ -617,11 +544,10 @@ def attach_shm_array(
    '''
    token = _Token.from_msg(token)
-    # Use original key for _known_tokens lookup, shm_name for OS calls
+    key = token.shm_name
    lookup_key = token.key if token.key else token.shm_name
-    if lookup_key in _known_tokens:
+    if key in _known_tokens:
-        assert _Token.from_msg(_known_tokens[lookup_key]) == token, "WTF"
+        assert _Token.from_msg(_known_tokens[key]) == token, "WTF"
    # XXX: ugh, looks like due to the ``shm_open()`` C api we can't
    # actually place files in a subdir, see discussion here:
@ -632,7 +558,7 @@ def attach_shm_array(
    for _ in range(3):
        try:
            shm = SharedMemory(
-                name=token.shm_name,  # Use (possibly shortened) OS name
+                name=key,
                create=False,
            )
            break
@ -680,8 +606,8 @@ def attach_shm_array(
    # Stash key -> token knowledge for future queries
    # via `maybe_opepn_shm_array()` but only after we know
    # we can attach.
-    if lookup_key not in _known_tokens:
+    if key not in _known_tokens:
-        _known_tokens[lookup_key] = token
+        _known_tokens[key] = token
    # "close" attached shm on actor teardown
    if (actor := tractor.current_actor(
--- a/piker/ui/_display.py
+++ b/piker/ui/_display.py
@ -214,12 +214,7 @@ async def increment_history_view(
    hist_chart: ChartPlotWidget = ds.hist_chart
    hist_viz: Viz = ds.hist_viz
    # viz: Viz = ds.viz
-    # NOTE: On macOS, shm names are shortened to fit the 31-char limit,
+    assert 'hist' in hist_viz.shm.token['shm_name']
    # so we can't reliably check for 'hist' in the name anymore.
    # The important thing is that hist_viz is correctly assigned from ds.
    # token = hist_viz.shm.token
    # shm_key = token.get('key') or token['shm_name']
    # assert 'hist' in shm_key
    # name: str = hist_viz.name
    # TODO: seems this is more reliable at keeping the slow
--- a/piker/ui/_window.py
+++ b/piker/ui/_window.py
@ -37,7 +37,6 @@ from piker.ui.qt import (
    QStatusBar,
    QScreen,
    QCloseEvent,
    QSettings,
 )
 from ..log import get_logger
 from ._style import _font_small, hcolor
@ -182,13 +181,6 @@ class MainWindow(QMainWindow):
        self._status_label: QLabel = None
        self._size: tuple[int, int]|None = None
        # restore window geometry from previous session
        settings = QSettings('pikers', 'piker')
        geometry = settings.value('windowGeometry')
        if geometry is not None:
            self.restoreGeometry(geometry)
            log.debug('Restored window geometry from previous session')
    @property
    def mode_label(self) -> QLabel:
@ -225,11 +217,6 @@ class MainWindow(QMainWindow):
        '''Cancel the root actor asap.
        '''
        # save window geometry for next session
        settings = QSettings('pikers', 'piker')
        settings.setValue('windowGeometry', self.saveGeometry())
        log.debug('Saved window geometry for next session')
        # raising KBI seems to get intercepted by by Qt so just use the system.
        os.kill(os.getpid(), signal.SIGINT)
--- a/piker/ui/qt.py
+++ b/piker/ui/qt.py
@ -44,7 +44,6 @@ from PyQt6.QtCore import (
    QItemSelectionModel,
    pyqtBoundSignal,
    pyqtRemoveInputHook,
    QSettings,
 )
 align_flag: EnumType = Qt.AlignmentFlag
--- a/pyproject.toml
+++ b/pyproject.toml
@ -202,8 +202,8 @@ pyvnc = { git = "https://github.com/regulad/pyvnc.git" }
 # xonsh = { git = 'https://github.com/xonsh/xonsh.git', branch = 'main' }
 # XXX since, we're like, always hacking new shite all-the-time. Bp
-# tractor = { git = "https://github.com/goodboy/tractor.git", branch ="piker_pin" }
+tractor = { git = "https://github.com/goodboy/tractor.git", branch ="piker_pin" }
-tractor = { git = "https://pikers.dev/goodboy/tractor", branch = "macos_fixed_2025" }
+# tractor = { git = "https://pikers.dev/goodboy/tractor", branch = "piker_pin" }
 # tractor = { git = "https://pikers.dev/goodboy/tractor", branch = "main" }
 # ------ goodboy ------
 # hackin dev-envs, usually there's something new he's hackin in..
--- a/uv.lock
+++ b/uv.lock
@ -985,54 +985,54 @@ wheels = [
 [[package]]
 name = "pandas"
-version = "3.0.1"
+version = "3.0.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
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    { name = "python-dateutil" },
    { name = "tzdata", marker = "sys_platform == 'emscripten' or sys_platform == 'win32'" },
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Author	SHA1	Message	Date
Gud Boi	b1588b5e1b	Factor `.claude/skills/` into proper subdirs w/ frontmatter Reorganize all 5 skills from loose `.md` files (and one partially-formatted `commit_msg/`) into the documented `subdirectory/SKILL.md` format with YAML frontmatter. Deats, - `commit_msg/` -> `commit-msg/` w/ enhanced frontmatter: `argument-hint`, `disable-model-invocation`, `allowed-tools`, dynamic `!` context injection for staged diff + recent log, `$ARGUMENTS` support - `piker_profiling.md` -> `piker-profiling/SKILL.md` + `patterns.md` for detailed profiling patterns - `piker_slang_and_communication_style.md` -> `piker-slang/SKILL.md` + `dictionary.md` + `examples.md` - `pyqtgraph_rendering_optimization.md` -> `pyqtgraph-optimization/SKILL.md` + `examples.md` - `timeseries_numpy_polars_optimization.md` -> `timeseries-optimization/SKILL.md` + `numpy-patterns.md` + `polars-patterns.md` Also, - all background skills use `user-invocable: false` for auto-application when relevant. - use a hyphen convention across all dir names. - content is now split into supporting files linked from each `SKILL.md`. (this patch was generated in some part by [`claude-code`][claude-code-gh]) [claude-code-gh]: https://github.com/anthropics/claude-code	2026-02-27 12:53:10 -05:00
Gud Boi	13d06f72c8	Ignore `gish` locally cached issue `.md` files We may eventually want to actually track these in git itself so we can check/sync state with the corresponding git hosting service however? I'm not sure how feasible it'll be but def worth thinking about Bp	2026-02-27 12:53:09 -05:00
Gud Boi	6d35ed6057	Add `claude` settings config `.json`	2026-02-27 12:52:51 -05:00
Gud Boi	d8a9e63483	Ignore more specialized `.<subdir>` content - any `claude` commit-msg gen tmp files used for my `claude.commit` thingie. - any `nix develop --profile .nixdev` profile cache file. - an `Session.vim` state-file used by `:Obsession .`.	2026-02-27 12:52:21 -05:00
Gud Boi	9ec7423c5f	Add `.claude/CLAUDE.md`, commit-msg-gen stuffs rn Since apparently my commit-msg generator thingie stores the "training" prompt content in this file by default.. REALLY this should be put into a `SKILL.md` or similar later so that only truly global ctx content is put here.	2026-02-27 12:52:04 -05:00
Gud Boi	4efc59068c	Ignore files under `.git/` Since `telescope` uses it for file finding.	2026-02-27 12:52:01 -05:00
Gud Boi	a6212af3d5	Add `.claude/skills/*` files from gap-annotator perf sesh with ma boi	2026-02-27 12:51:20 -05:00