Devstack: auto-fetch GITHUB_TOKEN from gh CLI

lpb.conf.env now uses $(gh auth token 2>/dev/null || true) to
dynamically fetch the GitHub token if gh CLI is installed and
the user is logged in. Falls back to empty (MCP server won't start
without a token).

Author: localpibox

lpb.conf.env

@@ -58,6 +58,12 @@ LPB_AGENT_BROWSER_IDLE_TIMEOUT_MS=300000
 # ─── API Keys ───────────────────────────────────────────────────────────
 # Exa MCP search API key
 LPB_EXA_API_KEY=
+# Context7 MCP server API key (optional — improves rate limits)
+LPB_CONTEXT7_API_KEY=
+# ─── GitHub MCP Server Token ──────────────────────────────────────────────
+# Dynamic: fetched from `gh auth token` if gh CLI is installed & logged in.
+# Fallback: set LPB_GITHUB_TOKEN manually or via shell env (highest priority).
+LPB_GITHUB_TOKEN=$(gh auth token 2>/dev/null || true)
 
 # ─── Misc ───────────────────────────────────────────────────────────────
 # Persist gh CLI auth to ~/.config/gh inside container