feat: add daily end to end testing

.github/daily-integration-test/cleanup-linux.sh

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+#!/bin/bash
+set -x
+
+sudo apt-get purge -y nodejs npm golang-go 2>&1 | tail -20 || true
+sudo apt-get autoremove -y 2>&1 | tail -20 || true
+
+# Catch anything left on PATH that wasn't apt-managed (hostedtoolcache symlinks, /usr/local, etc.)
+for bin in node npm go; do
+  path="$(command -v "$bin" || true)"
+  [ -n "$path" ] && sudo rm -f "$path"
+done
+sudo rm -rf /usr/local/go /opt/hostedtoolcache/node /opt/hostedtoolcache/go
+
+hash -r
+command -v node && exit 1
+command -v go && exit 1
+echo "node/go removed."

.github/daily-integration-test/cleanup-macos.sh

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+#!/bin/bash
+set -x
+
+brew uninstall --ignore-dependencies $(brew list | grep -E '^node(@|$)') 2>/dev/null || true
+brew uninstall --ignore-dependencies $(brew list | grep -E '^go$') 2>/dev/null || true
+
+hash -r
+command -v node && exit 1
+command -v go && exit 1
+echo "node/go removed."

.github/daily-integration-test/linux.codify.jsonc

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+[
+  { "type": "apt", "install": ["jq"], "update": true },
+  { "type": "nvm", "nodeVersions": ["20.11.1"], "global": "20.11.1" },
+  { "type": "pyenv", "pythonVersions": ["3.11.9"], "global": "3.11.9" },
+  { "type": "goenv", "goVersions": ["1.22.5"], "global": "1.22.5" }
+]

.github/daily-integration-test/macos.codify.jsonc

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+[
+  { "type": "homebrew", "formulae": ["jq"] },
+  { "type": "nvm", "nodeVersions": ["20.11.1"], "global": "20.11.1" },
+  { "type": "pyenv", "pythonVersions": ["3.11.9"], "global": "3.11.9" },
+  { "type": "goenv", "goVersions": ["1.22.5"], "global": "1.22.5" }
+]

.github/daily-integration-test/verify-destroyed.sh

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+#!/bin/bash
+set -euo pipefail
+
+if [ -d "$HOME/.nvm" ]; then
+  echo "FAIL: ~/.nvm still exists after destroy" >&2
+  exit 1
+fi
+
+if [ -d "$HOME/.goenv" ] || command -v goenv >/dev/null 2>&1; then
+  echo "FAIL: goenv still present after destroy" >&2
+  exit 1
+fi
+
+echo "nvm and goenv confirmed removed."

.github/daily-integration-test/verify.sh

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+#!/bin/bash
+set -euo pipefail
+
+if command -v brew >/dev/null 2>&1; then
+  brew list jq
+  jq --version
+fi
+
+if command -v apt-get >/dev/null 2>&1; then
+  dpkg -l jq
+  jq --version
+fi
+
+export NVM_DIR="$HOME/.nvm"
+. "$NVM_DIR/nvm.sh"
+[ "$(nvm current)" = "v20.11.1" ]
+node -v | grep -q "v20.11.1"
+
+export PYENV_ROOT="$HOME/.pyenv"
+export PATH="$PYENV_ROOT/bin:$PATH"
+eval "$(pyenv init -)"
+pyenv doctor
+[ "$(pyenv version-name)" = "3.11.9" ]
+python --version | grep -q "3.11.9"
+
+export GOENV_ROOT="$HOME/.goenv"
+export PATH="$GOENV_ROOT/bin:$GOENV_ROOT/shims:$PATH"
+eval "$(goenv init -)" 2>/dev/null || true   # macOS installs goenv via brew; init still needed
+[ "$(goenv version-name)" = "1.22.5" ]
+go version | grep -q "go1.22.5"
+
+echo "All resources verified."

.github/workflows/daily-integration-test.yaml

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+name: Daily Integration Test
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 6 * * *'   # daily, off-peak UTC
+
+jobs:
+  integration-test:
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 35
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            config: .github/daily-integration-test/macos.codify.jsonc
+          - os: ubuntu-latest
+            config: .github/daily-integration-test/linux.codify.jsonc
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Remove preinstalled Node/Python/Go
+        run: .github/daily-integration-test/cleanup-${{ runner.os == 'macOS' && 'macos' || 'linux' }}.sh
+
+      - name: Install Codify via public installer
+        run: curl -fsSL https://releases.codifycli.com/install.sh | bash
+
+      - run: codify --version
+
+      - name: Apply daily test config
+        run: codify apply ${{ matrix.config }} -y --sudoPassword ci-runner --output plain
+
+      - name: Verify installed resources
+        run: .github/daily-integration-test/verify.sh
+
+      - name: Destroy nvm and goenv
+        run: codify destroy nvm goenv -y --sudoPassword ci-runner --output plain
+
+      - name: Verify destroy removed nvm/goenv
+        run: .github/daily-integration-test/verify-destroyed.sh