Add PyPI release workflow and prepare 0.1.0 release

Add release workflow triggered by GitHub releases that builds
distributions, publishes to PyPI via trusted publishing (OIDC),
and uploads assets to the release. Move changelog to repo root
with docs inclusion via MyST directive.

Author: jezdez

.github/workflows/release.yml

@@ -0,0 +1,74 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build distribution
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+        with:
+          python-version: "3.13"
+
+      - name: Build sdist and wheel
+        run: pipx run build
+
+      - name: Upload distributions
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: dist
+          path: dist/
+
+  publish-pypi:
+    name: Publish to PyPI
+    runs-on: ubuntu-latest
+    needs: [build]
+    environment: pypi
+
+    permissions:
+      id-token: write
+
+    steps:
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        with:
+          name: dist
+          path: dist/
+
+      - uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
+        with:
+          packages-dir: dist/
+
+  upload-release-assets:
+    name: Upload release assets
+    runs-on: ubuntu-latest
+    needs: [publish-pypi]
+
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4.3.0
+        with:
+          name: dist
+          path: dist/
+
+      - name: Upload assets to GitHub Release
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          TAG_NAME: ${{ github.event.release.tag_name }}
+        run: gh release upload "$TAG_NAME" dist/* --repo "$GH_REPO"

CHANGELOG.md

@@ -0,0 +1,16 @@
+# Changelog
+
+## Unreleased
+
+## 0.1.0 — 2026-03-05
+
+- Initial implementation of `conda task` subcommand
+- Support for `pixi.toml`, `conda.toml`, `pyproject.toml`, and `.condarc`
+- Task dependency graphs with topological sorting
+- Jinja2 template rendering with `conda.*` context variables
+- Task argument system with defaults
+- File-based caching with inputs/outputs fingerprinting
+- Platform-specific task overrides
+- Conda environment activation for task execution
+- `conda task run`, `list`, `add`, `remove` subcommands
+- PyPI release workflow with trusted publishing

docs/changelog.md

@@ -1,13 +1,2 @@
-# Changelog
-
-## Unreleased
-
-- Initial implementation of `conda task` subcommand
-- Support for `pixi.toml`, `conda.toml`, `pyproject.toml`, and `.condarc`
-- Task dependency graphs with topological sorting
-- Jinja2 template rendering with `conda.*` context variables
-- Task argument system with defaults
-- File-based caching with inputs/outputs fingerprinting
-- Platform-specific task overrides
-- Conda environment activation for task execution
-- `conda task run`, `list`, `add`, `remove` subcommands
+```{include} ../CHANGELOG.md
+```