Coordinated bump of all public packages (packages-js/* and packages/*) to
0.9.0 to accompany the introduction of @arqel-dev/mcp-server in the
ecosystem (post-MVP MCP-001..008).

Inter-package requires unchanged: Composer uses self.version (resolved by
splitsh-lite at split time); npm uses workspace:* (resolved by pnpm
publish). The release workflow's per-package version-vs-tag check will
pass uniformly at v0.9.0.

The arqel-dev/framework meta-package lives in a separate repo and must
be updated independently after this tag.

Refs: PLANNING/13-pos-mvp-mcp-server.md
Signed-off-by: Diogo C. Coutinho <diogo.coutinho.ads@gmail.com>