feat: add pnpm run link:dev for local development

- scripts/link-dev.sh: one-command setup to switch ~/.uncaged-nerve
  to use monorepo packages instead of npm registry versions
- Builds all packages, links CLI globally, links all @uncaged/*
  packages into the nerve workspace, and restarts daemon
- Prevents version mismatch between CLI and daemon during development

package.json

@@ -8,7 +8,8 @@
     "prepare": "husky",
     "build": "pnpm -r run build",
     "check": "biome check .",
-    "format": "biome format --write ."
+    "format": "biome format --write .",
+    "link:dev": "bash scripts/link-dev.sh"
   },
   "devDependencies": {
     "@biomejs/biome": "^1.9.0",

scripts/link-dev.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+#
+# link-dev.sh — Switch ~/.uncaged-nerve to use the local monorepo packages.
+#
+# What it does:
+#   1. Build all packages (pnpm -r build)
+#   2. Link the CLI globally (nerve command → local build)
+#   3. Link all @uncaged/* packages into ~/.uncaged-nerve/
+#   4. Restart the daemon if it was running
+#
+# Usage:
+#   pnpm run link:dev            # from monorepo root
+#   bash scripts/link-dev.sh     # or directly
+
+set -euo pipefail
+
+NERVE_ROOT="${NERVE_ROOT:-$HOME/.uncaged-nerve}"
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+# ── Colors ──
+bold="\033[1m"
+green="\033[32m"
+yellow="\033[33m"
+reset="\033[0m"
+
+info()  { printf "${bold}${green}✓${reset} %s\n" "$1"; }
+warn()  { printf "${bold}${yellow}⚠${reset} %s\n" "$1"; }
+
+# ── 1. Build ──
+printf "\n${bold}Building all packages…${reset}\n"
+cd "$REPO_ROOT"
+pnpm -r run build
+
+# ── 2. Global link (CLI → nerve command) ──
+printf "\n${bold}Linking CLI globally…${reset}\n"
+cd "$REPO_ROOT/packages/cli"
+pnpm link --global
+info "nerve CLI linked globally"
+
+# ── 3. Link all @uncaged/* packages into workspace ──
+if [ ! -d "$NERVE_ROOT" ]; then
+  warn "$NERVE_ROOT does not exist. Run 'nerve init' first, then re-run this script."
+  exit 1
+fi
+
+printf "\n${bold}Linking packages into ${NERVE_ROOT}…${reset}\n"
+cd "$NERVE_ROOT"
+for pkg_dir in "$REPO_ROOT"/packages/*/; do
+  pkg_name=$(node -e "console.log(require('${pkg_dir}package.json').name)" 2>/dev/null) || continue
+  # Only link @uncaged/* packages
+  if [[ "$pkg_name" == @uncaged/* ]]; then
+    pnpm link "$pkg_dir"
+    info "$pkg_name → $(basename "$pkg_dir")"
+  fi
+done
+
+# ── 4. Restart daemon if running ──
+printf "\n${bold}Restarting daemon…${reset}\n"
+if nerve daemon status >/dev/null 2>&1; then
+  nerve daemon restart
+  info "Daemon restarted with local packages"
+else
+  warn "Daemon not running — skipping restart. Use 'nerve daemon start' when ready."
+fi
+
+printf "\n${bold}${green}Done!${reset} All packages linked to local monorepo build.\n"