chore: bump CLI version to 0.5.0 (#150)

BREAKING: The 'assemble' command has been removed. Prompt assembly
is now handled entirely by the LLM via bootstrap.md. The 'list'
command and 'interactive' command (default) are unchanged.

Changes since 0.4.0:
- Remove assemble command and assembly engine (assemble.js)
- Remove manifest resolution module (manifest.js)
- Simplify CLI to two commands: interactive (default) + list
- Add verbatim inclusion rule to bootstrap.md assembly process
- Add 24 automated tests using Node.js built-in test runner
- Update error messages (no assemble fallback, show content path)
- Validate both bootstrap.md and manifest.yaml on startup

Co-authored-by: Alan Jowett <alan.jowett@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: 3 people

cli/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@alan-jowett/promptkit",
-  "version": "0.3.0",
-  "description": "Composable prompt toolkit for software engineers. Assemble task-specific prompts from reusable personas, protocols, formats, and templates.",
+  "version": "0.5.0",
+  "description": "Composable prompt toolkit for software engineers. Launch an interactive LLM session to assemble task-specific prompts from reusable personas, protocols, formats, and templates.",
   "license": "MIT",
   "repository": {
     "type": "git",