ci: add publish + CI workflows to all packages

- Each submodule gets publish.yml (auto-publish on v*.*.* tags via OIDC)
- Each submodule gets ci.yml (build + import check on PR/push)
- Parent repo gets ci.yml that checks out with submodules recursive

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: pr1m8

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout with submodules
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install Poetry
+        run: |
+          curl -sSL https://install.python-poetry.org | python3 -
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Install dependencies
+        run: poetry install --no-interaction --no-root
+
+      - name: Verify imports
+        run: |
+          poetry run python -c "from haive.core import *; print('core OK')" || true
+          poetry run python -c "from haive.agents.simple.agent import SimpleAgent; print('agents OK')" || true