chore: add settings.local.json to .gitignore

fix: sanitize session IDs to slug format for Copilot CLI compatibility, bump to 1.1.2

chore: bump version to 1.1.1

fix: remove copilot auth check, assume CLI is authenticated

docs: fix plugin install command syntax

chore: update install instructions to wagnersza org and add lockfile

fix: add SDK dependency, fix stale codex refs in prompt, add runtime tests

docs: add README for copilot-plugin-cc

test: add integration smoke tests for CLI subcommands

feat: add copilot-companion.mjs main CLI entrypoint

feat: add hooks and session lifecycle scripts

feat: add skills, agent, and prompting references

feat: add all slash commands

feat: add prompt templates and review output schema

feat: add copilot-client SDK wrapper and fake fixture