Bump `xonsh` to 0.24.2

Use the current xonsh release in the Nix-managed REPL environment.

Deats,
- require xonsh 0.24.2 for Python 3.13 and Nix fixes;
- refresh only xonsh's source and wheel lock metadata;
- retain dotrc compatibility for shells outside this project;
- record Prompt-IO provenance for the dependency update.

Prompt-IO: ai/prompt-io/opencode/20260828T200352Z_dd676857_prompt_io.md

(this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`))

ai/prompt-io/opencode/20260828T200352Z_dd676857_prompt_io.md

@@ -0,0 +1,37 @@
+---
+model: openai/gpt-5.6-sol
+service: opencode
+session: 3e2eb8c9-6cfb-49a5-bf1a-1c0c2c2a4ddd
+timestamp: 2026-08-28T20:03:52Z
+git_ref: dd676857
+scope: config
+substantive: true
+raw_file: 20260828T200352Z_dd676857_prompt_io.raw.md
+---
+
+## Prompt
+
+Update the xonsh version used by the repository dev shell before stacking
+the Binance work, while retaining the dotrc compatibility shim as an
+immediate workaround for older shells.
+
+## Response summary
+
+Raises the xonsh dependency floor to `0.24.2` and refreshes its lock entry.
+The new release supports Python 3.13, handles Git alias completion natively,
+and works in the updated Nix development shell.
+
+## Files changed
+
+- `pyproject.toml` - require xonsh `0.24.2` or newer.
+- `uv.lock` - lock xonsh `0.24.2` wheels and source metadata.
+- `ai/prompt-io/opencode/20260828T200352Z_dd676857_prompt_io.raw.md` - retain
+  the triggering prompt, generated configuration summary, and checks.
+- `ai/prompt-io/opencode/20260828T200352Z_dd676857_prompt_io.md` - record
+  structured provenance for the dependency update.
+
+## Human edits
+
+The user identified old xonsh behavior as the root cause, reported the
+separate dotrc compatibility shim, and directed that the repository update
+remain a distinct flake-layer change before the Binance stack continues.

ai/prompt-io/opencode/20260828T200352Z_dd676857_prompt_io.raw.md

@@ -0,0 +1,36 @@
+---
+model: openai/gpt-5.6-sol
+service: opencode
+timestamp: 2026-08-28T20:03:52Z
+git_ref: dd676857
+diff_cmd: git diff HEAD~1..HEAD
+---
+
+## Prompt
+
+The user traced broken multiline conflict-resolution pastes to the old
+xonsh release installed by the repository dev shell. A separate dotrc
+agent added a compatibility shim, and the user directed that xonsh still
+be updated alongside the flake work before continuing the Binance stack.
+
+## Generated configuration
+
+> `git diff HEAD~1..HEAD -- pyproject.toml uv.lock`
+
+Raises the repository's xonsh requirement from `0.22.2` to `0.24.2` and
+refreshes only xonsh's locked distribution metadata. The selected release
+supports Python 3.13, includes native Git-config alias completion, and fixes
+Nix metadata checks.
+
+## Verification output
+
+- `uv lock --upgrade-package xonsh` resolves 111 packages and updates only
+  xonsh from `0.22.4` to `0.24.2`.
+- Fresh `nix develop` replaces the worktree-local xonsh installation.
+- `xonsh --version` reports `0.24.2`.
+- A multi-command xonsh invocation executes Git commands successfully.
+- `nix flake check --no-build` passes for `x86_64-linux`.
+- `git diff --check` passes.
+
+The existing Polars `1.36.0` lock remains unchanged despite uv reporting
+that its distributions are yanked for an `unpivot` regression.

pyproject.toml

@@ -132,7 +132,7 @@ repl = [
     "greenback >=1.1.1, <2.0.0",
 
   # @goodboy's preferred console toolz
-  "xonsh>=0.22.2",
+  "xonsh>=0.24.2",
     "prompt-toolkit ==3.0.40",
     "pyperclip>=1.9.0",
 

uv.lock

@@ -1059,7 +1059,7 @@ dev = [
     { name = "pytest" },
     { name = "qdarkstyle", specifier = ">=3.0.2,<4.0.0" },
     { name = "rapidfuzz", specifier = ">=3.2.0,<4.0.0" },
-    { name = "xonsh", specifier = ">=0.22.2" },
+    { name = "xonsh", specifier = ">=0.24.2" },
 ]
 lint = [{ name = "ruff", specifier = ">=0.9.6" }]
 repl = [
@@ -1068,7 +1068,7 @@ repl = [
     { name = "pexpect", specifier = ">=4.9.0" },
     { name = "prompt-toolkit", specifier = "==3.0.40" },
     { name = "pyperclip", specifier = ">=1.9.0" },
-    { name = "xonsh", specifier = ">=0.22.2" },
+    { name = "xonsh", specifier = ">=0.24.2" },
 ]
 testing = [{ name = "pytest" }]
 uis = [
@@ -1896,13 +1896,13 @@ wheels = [
 
 [[package]]
 name = "xonsh"
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+version = "0.24.2"
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 ]
 
 [[package]]