v0.8.0

This release adds Grok Build as a first-class assistant.

vibe-learn already watched Claude Code, Codex, and OpenCode. v0.8.0 does the
same for Grok Build: session actions are logged, pause summaries are written,
and /learn, /digest, /quiz, and /vibe-learn work the same way they do
on the other assistants.

Grok Build

After install, Grok users get:

• Automatic observation of file writes, edits, and shell commands
• /learn, /digest, and /quiz slash commands
• A /vibe-learn skill for natural-language requests ("use vibe-learn to
  learn what happened")
• --assistant=grok on setup.sh / vibe-learn install, plus auto-detection
  via the grok binary, ~/.grok, or GROK_HOME

Global hooks live in ${GROK_HOME:-~/.grok}/hooks/vibe-learn.json and are
always trusted. Project hooks live in .grok/hooks/ and need /hooks-trust
before they run.

If Claude Code vibe-learn is also installed, Grok may run both hook sets.
Set [compat.claude] hooks = false in ~/.grok/config.toml to avoid
double-logging.

Upgrading

Rerun the installer:

curl -fsSL https://raw.githubusercontent.com/gkaria/vibe-learn/main/scripts/setup.sh | bash

Or, from a checkout: bash scripts/setup.sh --local --assistant=grok.
Existing Claude Code, Codex, and OpenCode installs are unchanged.