chore: bump version to 0.5.0

* Create DEVELOPMENT.md outline

* AI-generated DEVELOPMENT.md draft

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Create Untitled 2.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Compact DEVELOPMENT.md

* Create DEVELOPMENT.md outline

* AI-generated DEVELOPMENT.md draft

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Create Untitled 2.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Update DEVELOPMENT.md

* Compact DEVELOPMENT.md

* Update DEVELOPMENT.md

CHANGELOG.md

@@ -2,6 +2,33 @@
 
 <!-- insert new changelog below this comment -->
 
+## [0.5.0] - 2026-04-02
+
+### Changed
+
+- Introduces DEVELOPMENT.md (#2069)
+- Update cc-sdd reference to cc-spex in Community Friends (#2007)
+- chore: release 0.4.5, begin 0.4.6.dev0 development (#2064)
+
+## [0.4.5] - 2026-04-02
+
+### Changed
+
+- Stage 6: Complete migration — remove legacy scaffold path (#1924) (#2063)
+- Install Claude Code as native skills and align preset/integration flows (#2051)
+- Add repoindex 0402 (#2062)
+- Stage 5: Skills, Generic & Option-Driven Integrations (#1924) (#2052)
+- feat(scripts): add --dry-run flag to create-new-feature (#1998)
+- fix: support feature branch numbers with 4+ digits (#2040)
+- Add community content disclaimers (#2058)
+- docs: add community extensions website link to README and extensions docs (#2014)
+- docs: remove dead Cognitive Squad and Understanding extension links and from extensions/catalog.community.json (#2057)
+- Add fix-findings extension to community catalog (#2039)
+- Stage 4: TOML integrations — gemini and tabnine migrated to plugin architecture (#2050)
+- feat: add 5 lifecycle extensions to community catalog (#2049)
+- Stage 3: Standard markdown integrations — 19 agents migrated to plugin architecture (#2038)
+- chore: release 0.4.4, begin 0.4.5.dev0 development (#2048)
+
 ## [0.4.4] - 2026-04-01
 
 ### Changed

DEVELOPMENT.md

@@ -0,0 +1,25 @@
+# Development Notes
+
+Spec Kit is a toolkit for spec-driven development. At its core, it is a coordinated set of prompts, templates, scripts, and CLI/integration assets that define and deliver a spec-driven workflow for AI coding agents. This document is a starting point for people modifying Spec Kit itself, with a compact orientation to the key project documents and repository organization.
+
+**Essential project documents:**
+
+| Document                                                   | Role                                                                                  |
+| ---------------------------------------------------------- | ------------------------------------------------------------------------------------- |
+| [README.md](README.md)                                     | Primary user-facing overview of Spec Kit and its workflow.                            |
+| [DEVELOPMENT.md](DEVELOPMENT.md)                           | This document.                                                                        |
+| [spec-driven.md](spec-driven.md)                           | End-to-end explanation of the Spec-Driven Development workflow supported by Spec Kit. |
+| [RELEASE-PROCESS.md](.github/workflows/RELEASE-PROCESS.md) | Release workflow, versioning rules, and changelog generation process.                 |
+| [docs/index.md](docs/index.md)                             | Entry point to the `docs/` documentation set.                                         |
+| [CONTRIBUTING.md](CONTRIBUTING.md)                         | Contribution process, review expectations, and required development practices.        |
+| [TESTING.md](TESTING.md)                                   | Validation strategy and testing procedures.                                           |
+
+**Main repository components:**
+
+| Directory          | Role                                                                                        |
+| ------------------ | ------------------------------------------------------------------------------------------- |
+| `templates/`       | Prompt assets and templates that define the core workflow behavior and generated artifacts. |
+| `scripts/`         | Supporting scripts used by the workflow, setup, and repository tooling.                     |
+| `src/specify_cli/` | Python source for the `specify` CLI, including agent-specific assets.                       |
+| `extensions/`      | Extension-related docs, catalogs, and supporting assets.                                    |
+| `presets/`         | Preset-related docs, catalogs, and supporting assets.                                       |

README.md

@@ -269,7 +269,7 @@ See Spec-Driven Development in action across different scenarios with these comm
 
 Community projects that extend, visualize, or build on Spec Kit:
 
-- **[cc-sdd](https://github.com/rhuss/cc-sdd)** - A Claude Code plugin that adds composable traits on top of Spec Kit with [Superpowers](https://github.com/obra/superpowers)-based quality gates, spec/code review, git worktree isolation, and parallel implementation via agent teams.
+- **[cc-spex](https://github.com/rhuss/cc-spex)** - A Claude Code plugin that adds composable traits on top of Spec Kit with [Superpowers](https://github.com/obra/superpowers)-based quality gates, spec/code review, git worktree isolation, and parallel implementation via agent teams.
 
 - **[Spec Kit Assistant](https://marketplace.visualstudio.com/items?itemName=rfsales.speckit-assistant)** — A VS Code extension that provides a visual orchestrator for the full SDD workflow (constitution → specification → planning → tasks → implementation) with phase status visualization, an interactive task checklist, DAG visualization, and support for Claude, Gemini, GitHub Copilot, and OpenAI backends. Requires the `specify` CLI in your PATH.
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "specify-cli"
-version = "0.4.5.dev0"
+version = "0.5.0"
 description = "Specify CLI, part of GitHub Spec Kit. A tool to bootstrap your projects for Spec-Driven Development (SDD)."
 requires-python = ">=3.11"
 dependencies = [