Prep 0.1.0 release: docs, drift pins, and CI hygiene

.github/CODEOWNERS

@@ -1,3 +1,2 @@
 # Default owners for everything in the repo.
-* @ionq/sdk-team
-
+* @ionq/developer-tools

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -3,20 +3,49 @@ description: Report a bug in ionq-core
 labels: [bug]
 
 body:
+  - type: markdown
+    attributes:
+      value: |
+        Thanks for taking the time to file a bug report. Please search [existing issues](https://github.com/ionq/ionq-core-python/issues) first.
+
+  - type: dropdown
+    id: area
+    attributes:
+      label: Affected area
+      description: |
+        See [proposing changes](https://github.com/ionq/ionq-core-python/blob/main/CONTRIBUTING.md#proposing-changes) for the boundary between generated and hand-written code.
+      options:
+        - Generated client (regenerated from OpenAPI spec)
+        - Hand-written extensions (retry, pagination, polling, sessions, native gates, etc.)
+        - API surface / OpenAPI spec (originates upstream)
+        - Documentation
+        - Tests or tooling
+        - Not sure
+    validations:
+      required: true
+
   - type: textarea
-    id: description
+    id: what-happened
     attributes:
-      label: Description
-      description: What happened, and what did you expect to happen?
+      label: What happened?
+      description: A clear description of the bug, including any error message or traceback.
     validations:
       required: true
 
+  - type: textarea
+    id: expected
+    attributes:
+      label: What did you expect to happen?
+      description: Optional - skip if a traceback or error message above already shows the problem.
+
   - type: textarea
     id: reproduction
     attributes:
       label: Reproduction
       description: Minimal code or steps to reproduce the bug.
       render: Python
+    validations:
+      required: true
 
   - type: textarea
     id: version
@@ -25,8 +54,16 @@ body:
       description: |
         Paste the output of:
         ```bash
-        python -c "import ionq_core; print(ionq_core.__version__); import platform; print(platform.python_version()); print(platform.platform())"
+        python -c "import ionq_core, sys, platform; print(ionq_core.__version__, sys.version, platform.platform())"
         ```
       render: Text
     validations:
       required: true
+
+  - type: checkboxes
+    id: searched
+    attributes:
+      label: Pre-submit checks
+      options:
+        - label: I searched existing issues and didn't find a duplicate.
+          required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: Report a security vulnerability
+    url: https://github.com/ionq/ionq-core-python/security/policy
+    about: Email security@ionq.co. Do not open a public issue.
   - name: IonQ Support
     url: https://ionq.com/contact
     about: For account, billing, or platform questions, contact IonQ support directly.

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -3,10 +3,23 @@ description: Suggest a feature for ionq-core
 labels: [enhancement]
 
 body:
+  - type: markdown
+    attributes:
+      value: |
+        Please search [existing issues](https://github.com/ionq/ionq-core-python/issues) before opening a new request. For API surface changes (new endpoints, parameter names, response shapes), see [proposing changes](https://github.com/ionq/ionq-core-python/blob/main/CONTRIBUTING.md#proposing-changes).
+
   - type: textarea
     id: description
     attributes:
       label: Description
       description: What problem would this solve, and how would you like it to work?
     validations:
       required: true
+
+  - type: checkboxes
+    id: searched
+    attributes:
+      label: Pre-submit checks
+      options:
+        - label: I searched existing issues and didn't find a duplicate.
+          required: true

.github/actions/setup-uv/action.yml

@@ -0,0 +1,20 @@
+name: Set up uv with Python
+description: Install uv and Python with the project's pinned defaults.
+
+inputs:
+  python-version:
+    description: Python version to install. Defaults to the project's floor.
+    required: false
+    default: "3.12"
+  enable-cache:
+    description: Pass-through to astral-sh/setup-uv enable-cache.
+    required: false
+    default: "false"
+
+runs:
+  using: composite
+  steps:
+    - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      with:
+        python-version: ${{ inputs.python-version }}
+        enable-cache: ${{ inputs.enable-cache }}

.github/pull_request_template.md

@@ -9,6 +9,5 @@
 ---
 
 > [!IMPORTANT]
-> Most code in `ionq_core/` is auto-generated. Do not edit files under `ionq_core/api/`,
-> `ionq_core/models/`, or `ionq_core/client.py`, `errors.py`, `types.py` directly.
-> See [CONTRIBUTING.md](../CONTRIBUTING.md#code-structure) for details.
+> Most code in `ionq_core/` is auto-generated and overwritten on regeneration.
+> See [CONTRIBUTING.md](../CONTRIBUTING.md#proposing-changes) for which files are safe to edit.

.github/workflows/ci.yml

@@ -23,9 +23,8 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - uses: ./.github/actions/setup-uv
         with:
-          python-version: "3.12"
           enable-cache: ${{ github.event_name == 'push' }}
       - run: uv sync
       - run: uv run ruff check
@@ -43,7 +42,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - uses: ./.github/actions/setup-uv
         with:
           python-version: ${{ matrix.python-version }}
           enable-cache: ${{ github.event_name == 'push' }}
@@ -57,8 +56,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - uses: ./.github/actions/setup-uv
         with:
-          python-version: "3.12"
           enable-cache: ${{ github.event_name == 'push' }}
       - run: uvx pip-audit --require-hashes --strict -r <(uv pip compile pyproject.toml --generate-hashes)

.github/workflows/docs.yml

@@ -19,9 +19,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
-        with:
-          python-version: "3.12"
+      - uses: ./.github/actions/setup-uv
       - run: uv sync
       - run: uv run pdoc -o docs/ -d google ionq_core
       - uses: actions/upload-pages-artifact@fc324d3547104276b827a68afc52ff2a11cc49c9 # v5

.github/workflows/generated.yml

@@ -18,10 +18,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
-        with:
-          python-version: "3.12"
-          enable-cache: false
+      - uses: ./.github/actions/setup-uv
       - name: Prepare spec
         run: |
           set -euo pipefail

.github/workflows/integration.yml

@@ -24,9 +24,8 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+      - uses: ./.github/actions/setup-uv
         with:
-          python-version: "3.12"
           enable-cache: true
       - run: uv sync
       - name: Run integration tests

.github/workflows/release.yml

@@ -41,10 +41,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
           persist-credentials: false
-      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
-        with:
-          python-version: "3.12"
-          enable-cache: false
+      - uses: ./.github/actions/setup-uv
       - run: uv build
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
         with:

.github/workflows/zizmor.yml

@@ -3,9 +3,9 @@ name: Audit workflows
 on:
   push:
     branches: [main]
-    paths: [".github/workflows/**"]
+    paths: [".github/workflows/**", ".github/actions/**"]
   pull_request:
-    paths: [".github/workflows/**"]
+    paths: [".github/workflows/**", ".github/actions/**"]
 
 permissions:
   actions: read

.pre-commit-config.yaml

@@ -13,7 +13,7 @@ repos:
       - id: gitleaks
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.11
+    rev: v0.15.12
     hooks:
       - id: ruff-check
         args: [--fix]

CHANGELOG.md

@@ -2,22 +2,26 @@
 
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.1.0] - 2026-04-22
+## [Unreleased]
+
+## [0.1.0] - 2026-04-29
 
 ### Added
 
-- Auto-generated Python client from the IonQ OpenAPI v0.4 spec (endpoints, typed models, sync + async)
-- `IonQClient` convenience wrapper with API key handling, configurable base URL, and User-Agent
-- Retry transport with exponential backoff, idempotency-aware retry, and Retry-After support
-- Structured exception hierarchy (`IonQError` -> `APIError` -> `AuthenticationError`, `RateLimitError`, etc.)
-- Pagination helpers (`iter_jobs`, `aiter_jobs`, `iter_session_jobs`, `aiter_session_jobs`)
-- Job polling helpers (`wait_for_job`, `async_wait_for_job`) with timeout and failure detection
-- `SessionManager` for QPU session lifecycle (create, end, status, context manager)
-- `ClientExtension` API for downstream SDKs to inject hooks, headers, timeouts, and transport wrappers
-- Native gate unitary matrices (`gpi_matrix`, `gpi2_matrix`, `ms_matrix`, `zz_matrix`)
-- OpenAPI Overlay for spec workarounds (nullable schemas, missing endpoints, gate fixes)
-- 100% test coverage on hand-written code (line + branch) enforced in CI
-- CI/CD: lint, type check, tests on Python 3.12-3.14, generated code staleness check, weekly spec drift detection
+- `IonQClient` factory with `IONQ_API_KEY` auto-detection, configurable timeouts, and unified sync + async transports.
+- Sync and async variants (`sync`, `sync_detailed`, `asyncio`, `asyncio_detailed`) for every endpoint, generated from the IonQ OpenAPI spec via `openapi-python-client`.
+- Endpoint coverage: backends, characterizations, jobs (create, list, get, delete, cancel, cost, estimate, compiled file, probabilities, variant histogram/shots/probabilities), sessions (create, list, get, end, list jobs), usage, whoami.
+- Structured exception hierarchy rooted at `IonQError`, with `APIError` subclasses for 400, 401, 403, 404, 429, and 5xx responses, plus `APIConnectionError` and `APITimeoutError` for transport failures. `RateLimitError` exposes `retry_after`.
+- Automatic retry with exponential backoff and jitter on 429, 500, 502, 503, and 520-529 (default 2 retries), respecting `Retry-After` headers.
+- `ClientExtension` configuration bundle for downstream SDKs: `EventHook` / `AsyncEventHook` protocols, `HookTransport`, custom retryable status codes, header injection, transport wrappers, and `error_mapper`.
+- Pagination helpers `iter_jobs`, `aiter_jobs`, `iter_session_jobs`, and `aiter_session_jobs` that auto-follow cursor pagination.
+- Polling helpers `wait_for_job` and `async_wait_for_job` with exponential backoff, `JobTimeoutError`, and `JobFailedError`.
+- `SessionManager` with sync and async context-manager support, optional `max_jobs` / `max_time` / `max_cost` limits, and `SessionManager.from_id` for reconnecting to existing sessions.
+- Native trapped-ion gate unitaries `gpi_matrix`, `gpi2_matrix`, `ms_matrix`, and `zz_matrix` as plain Python nested tuples (no NumPy dependency).
+- Typed `attrs` request and response models with `from_dict()` / `to_dict()` and an `Unset` sentinel that distinguishes "not provided" from `None`.
+- Python 3.12 - 3.14 support, `py.typed` marker, Apache-2.0 license.
+
+[Unreleased]: https://github.com/ionq/ionq-core-python/compare/v0.1.0...HEAD
+[0.1.0]: https://github.com/ionq/ionq-core-python/releases/tag/v0.1.0

CODE_OF_CONDUCT.md

@@ -2,35 +2,82 @@
 
 ## Our Pledge
 
-We as members, contributors, and leaders pledge to make participation in our
-community a harassment-free experience for everyone, regardless of age, body
-size, visible or invisible disability, ethnicity, sex characteristics, gender
-identity and expression, level of experience, education, socio-economic status,
-nationality, personal appearance, race, caste, color, religion, or sexual
-identity and orientation.
+We as members, contributors, and leaders pledge to make participation in our community a harassment-free experience for everyone, regardless of age, body size, visible or invisible disability, ethnicity, sex characteristics, gender identity and expression, level of experience, education, socio-economic status, nationality, personal appearance, race, caste, color, religion, or sexual identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming, diverse, inclusive, and healthy community.
 
 ## Our Standards
 
-Examples of behavior that contributes to a positive environment:
+Examples of behavior that contributes to a positive environment for our community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes, and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of acceptable behavior and will take appropriate and fair corrective action in response to any behavior that they deem inappropriate, threatening, offensive, or harmful.
 
-- Using welcoming and inclusive language
-- Being respectful of differing viewpoints and experiences
-- Gracefully accepting constructive criticism
-- Focusing on what is best for the community
+Community leaders have the right and responsibility to remove, edit, or reject comments, commits, code, wiki edits, issues, and other contributions that are not aligned to this Code of Conduct, and will communicate reasons for moderation decisions when appropriate.
 
-Examples of unacceptable behavior:
+## Scope
 
-- Trolling, insulting or derogatory comments, and personal or political attacks
-- Public or private harassment
-- Publishing others' private information without explicit permission
-- Other conduct which could reasonably be considered inappropriate
+This Code of Conduct applies within all community spaces, and also applies when an individual is officially representing the community in public spaces. Examples of representing our community include using an official e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event.
 
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported to the project maintainers at support@ionq.co. All complaints will be
-reviewed and investigated.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the community leaders responsible for enforcement at <conduct@ionq.co>. All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing clarity around the nature of the violation and an explanation of why the behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No interaction with the people involved, including unsolicited interaction with those enforcing the Code of Conduct, for a specified period of time. This includes avoiding interactions in community spaces as well as external channels like social media. Violating these terms may lead to a temporary or permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public communication with the community for a specified period of time. No public or private interaction with the people involved, including unsolicited interaction with those enforcing the Code of Conduct, is allowed during this period. Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community standards, including sustained inappropriate behavior, harassment of an individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the community.
 
 ## Attribution
 
-This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org/), version 2.1.
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 2.1, available at [https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at [https://www.contributor-covenant.org/faq][FAQ]. Translations are available at [https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations