feat: introduce GitHub Copilot Chat adapter using official BMAD prompt artifacts

bmad-copilot/.gitignore

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+node_modules/
+dist/
+out/
+releases/
+*.vsix
+*.tgz
+.DS_Store
+Thumbs.db

bmad-copilot/.npmignore

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+# Source
+src/
+*.ts
+!dist/**/*.d.ts
+
+# Development
+.vscode/
+.github/
+out/
+node_modules/
+
+# Testing
+TESTING.md
+*.vsix
+
+# Config
+tsconfig.json
+.vscodeignore
+.eslintrc*
+.prettierrc*
+.editorconfig

bmad-copilot/.vscode/launch.json

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+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Run Extension",
+      "type": "extensionHost",
+      "request": "launch",
+      "args": [
+        "--extensionDevelopmentPath=${workspaceFolder}"
+      ],
+      "outFiles": [
+        "${workspaceFolder}/dist/**/*.js"
+      ],
+      "preLaunchTask": "npm: compile"
+    },
+    {
+      "name": "Run Extension (Watch)",
+      "type": "extensionHost",
+      "request": "launch",
+      "args": [
+        "--extensionDevelopmentPath=${workspaceFolder}"
+      ],
+      "outFiles": [
+        "${workspaceFolder}/dist/**/*.js"
+      ],
+      "preLaunchTask": "npm: watch"
+    }
+  ]
+}

bmad-copilot/.vscode/tasks.json

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+{
+  "version": "2.0.0",
+  "tasks": [
+    {
+      "type": "npm",
+      "script": "compile",
+      "group": {
+        "kind": "build",
+        "isDefault": true
+      },
+      "problemMatcher": "$tsc",
+      "label": "npm: compile"
+    },
+    {
+      "type": "npm",
+      "script": "watch",
+      "group": "build",
+      "problemMatcher": "$tsc-watch",
+      "isBackground": true,
+      "label": "npm: watch"
+    }
+  ]
+}

bmad-copilot/.vscodeignore

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+.vscode/**
+.github/**
+src/**
+out/**
+releases/**
+scripts/**
+node_modules/**
+tsconfig.json
+.gitignore
+.npmignore
+TESTING.md
+*.vsix

bmad-copilot/CHANGELOG.md

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+# Changelog
+
+## [0.2.0] — 2026-02-11
+
+### Added
+
+- **CLI Bootstrap Layer** (`bin/bmad-copilot-adapter.js`)
+  - `npx bmad-copilot-adapter bootstrap` — Full setup: check Node ≥18, verify prompts, detect VS Code, install extension, validate registration
+  - `npx bmad-copilot-adapter update` — Rescan `.github/prompts`, count manifests, write sentinel, trigger extension refresh
+  - `npx bmad-copilot-adapter status` — Show full BMAD installation diagnostics
+
+- **`/update` Copilot Chat command**
+  - Invalidates cached command registry
+  - Triggers full rescan of prompt files
+  - Available via `@bmad /update` in Copilot Chat
+
+- **`bmad-copilot.update` VS Code command**
+  - Available from Command Palette: "BMAD Copilot: Update (Invalidate + Rescan)"
+  - Equivalent to CLI `npx bmad-copilot-adapter update`
+
+- **`CommandRegistry.invalidate()` and `CommandRegistry.rescan()`**
+  - `invalidate()` clears cached state immediately
+  - `rescan()` combines invalidate + scan in one call
+
+- **Prompt integrity auto-check on activation**
+  - Detects `_bmad/` present but `.github/prompts/` missing
+  - Shows actionable notification with "Run Update" button
+
+- **UTF-8 BOM stripping** in CSV parsing
+  - `loadCsv()` now strips BOM before parsing (fixes Windows-generated CSV headers)
+
+### Changed
+
+- **Pure adapter architecture** — all mirror/transform/conversion logic removed
+  - `chatBridge.ts` no longer imports `BmadRuntime` or `hasClaudeCodeSource`
+  - `executeCommand()` shows clear error with install guidance when prompt file is missing (no fallback)
+  - `handleStatus()` no longer reports claude-code mirror status
+  - `MISSING_COPILOT_FILES_MESSAGE` updated to point to official BMAD installer only
+- `promptMirror.ts` — marked as `@deprecated` (no active imports)
+- `bmadRuntime.ts` — marked as `@deprecated` (no active imports)
+- Version bumped to 0.2.0 (minor)
+- `package.json` now declares `bin` field for CLI entry
+- `files` array includes `bin/bmad-copilot-adapter.js`
+- Chat participant commands now include `/update`
+- Installation guard allows `/update` to run even when state is null
+- ARCHITECTURE.md and README.md fully rewritten for pure adapter model
+- Removed GitHub Actions CI/CD workflow (`release.yml`)
+- Removed all global install (`-g`) references from documentation
+- README now recommends project-level installation only
+- Added troubleshooting section for 0-command scenario
+- Release process is now manual (`npm publish`) only
+
+## [0.1.2] — Initial release
+
+- Core Chat Participant (`@bmad`)
+- Prompt File Executor
+- Command Registry with CSV manifest parsing
+- CLI Bridge for terminal operations

bmad-copilot/LICENSE

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+MIT License
+
+Copyright (c) 2026 BMAD Code Organization
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.