chore(micro): remove micro CLI package

The packages/micro CLI is no longer needed — posts can be created by
POSTing directly to the /micro endpoint with an Authorization header.
Browsing is available at /micro in the browser.

Also remove the 'micro' mise task that invoked the CLI.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: just-be-dev

bun.lock

@@ -89,7 +89,3 @@ description = "Assemble changelog fragments into CHANGELOG.md"
 run = "bun scripts/release-notes.ts"
 description = "Preview release notes for a package version"
 
-[tasks.micro]
-run = "bun packages/micro/index.ts"
-description = "Micro blog CLI (browse posts or create new ones)"
-raw = true