Update CHANGELOG.md with v0.1.0 to v0.1.2 release notes

- Document new features, improvements, and changes for v0.1.0 initial release
- Add v0.1.1 changes including config refactoring and README updates
- Include v0.1.2 fix for VS Marketplace badge URLs
- Maintain chronological order of release notes

Author: atman-33

CHANGELOG.md

@@ -29,3 +29,59 @@ All notable changes to this project will be documented in this file.
 - add version bump workflow
 - release/v0.1.2
 
+## v0.1.2 2025-09-08
+
+### 📝 Documentation
+
+- Fix VS Marketplace badge URLs in README to use the correct `atman-dev` namespace. No functional code changes.
+
+## v0.1.1 2025-09-08
+
+### 🔧 Improvements
+
+- Refactor configuration handling:
+  - Move runtime settings to VS Code settings under the `kfc.*` namespace.
+  - Simplify project configuration to only manage paths via `.codex/settings/kfc-settings.json`.
+  - Remove unused configuration interfaces/methods in `src/utils/config-manager.ts` and update related unit tests.
+
+### 📝 Documentation
+
+- Update README to clarify configuration structure and fixed settings file location.
+
+## v0.1.0 2025-09-07
+
+Initial public release.
+
+### ✨ New Features
+
+- SPEC management:
+  - Create specs (requirements → design → tasks) via Codex CLI (`kfc.spec.create`).
+  - Navigate to requirements/design/tasks from the SPEC explorer.
+  - CodeLens for tasks in `tasks.md`: execute a single task via Codex and auto‑check it off (`kfc.spec.implTask`).
+- STEERING management:
+  - Generate initial project steering docs (product/tech/structure) (`kfc.steering.generateInitial`).
+  - Create custom steering documents (`kfc.steering.create`).
+  - Refine and delete steering docs with Codex updating related docs (`kfc.steering.refine`, `kfc.steering.delete`).
+- PROMPTS view:
+  - Create Markdown prompts under `.codex/prompts` (`kfc.prompts.create`).
+  - Run prompts in a split terminal with Codex (`kfc.prompts.run`).
+  - Refresh prompts list (`kfc.prompts.refresh`).
+- Overview/Settings:
+  - Optional settings view and quick links (`kfc.settings.open`, `kfc.help.open`).
+  - Toggle view visibility from a command (`kfc.menu.open`).
+- Codex integration:
+  - Availability/version check and setup guidance (`kfc.codex.checkAvailability`).
+  - Headless execution and split‑terminal invocation with retry/error handling.
+- Update checker:
+  - Manual update check command (`kfc.checkForUpdates`).
+
+### 🔧 Improvements
+
+- Default settings include prompts path (`paths.prompts`) and visibility (`views.prompts`).
+- File system watchers auto‑refresh SPEC/STEERING/PROMPTS on `.codex/` changes.
+- Windows enhancements: WSL path conversion when detected; PowerShell recommended.
+
+### 🚫 Temporarily Disabled / Limitations
+
+- Agents, Hooks, and MCP views are disabled in this build.
+- "New Spec with Agents" flow is disabled.