ci: Add GitHub Actions (test, lint, release) and issue templates

.github/ISSUE_TEMPLATE/bug_report.yml

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+name: Bug Report
+
+about: Report something that is not working as expected.
+
+---
+
+**Describe the bug**
+A clear description of what went wrong.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Run '...'
+3. See error
+
+**Expected behavior**
+What you expected to happen.
+
+**Environment:**
+- OS: [e.g. Debian 12, macOS 14]
+- SBCL version: [e.g. 2.4.0]
+- OpenCortex version: [e.g. v0.1.0]
+
+**Additional context**
+Any other relevant information (logs, stack traces, etc.)

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: Feature Request
+
+about: Suggest a new feature or enhancement.
+
+---
+
+**Describe the problem**
+What problem does this feature solve?
+
+**Describe the ideal solution**
+A clear description of what you want to happen.
+
+**Describe alternatives considered**
+Any alternative solutions you've considered.
+
+**Additional context**
+Any other relevant context (mockups, related issues, etc.)
+
+**Implementation suggestion**
+(Optional) If you have thoughts on how to implement this in pure Common Lisp + Org-mode:
+- Which skill should own this?
+- Should it be a =def-cognitive-tool=, a new skill, or an enhancement to an existing one?

.github/workflows/lint.yml

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+name: Lint
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    container:
+      image: ubuntu:latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          apt-get update && apt-get install -y --no-install-recommends \
+            git emacs-nox
+
+      - name: Check for forbidden patterns
+        run: |
+          grep -r "json\." --include="*.lisp" . && \
+            echo "ERROR: Found JSON usage in Lisp files" && exit 1 || \
+            echo "OK: No JSON in Lisp files"
+
+      - name: Check literate granularity
+        run: |
+          find . -name "*.org" -path "./skills/*" -exec grep -L "#+begin_src lisp" {} \; | \
+            grep -v "CLA\|CONTRIBUTING\|CHANGELOG" && \
+            echo "WARNING: Some skills lack lisp blocks" || \
+            echo "OK: All skills have lisp blocks"
+
+      - name: Verify .lisp files are generated
+        run: |
+          for f in library/gen/*.lisp; do
+            org="${f%.lisp}.org"
+            if [ -f "$org" ]; then
+              : # generated, OK
+            else
+              echo "WARNING: $f has no corresponding .org source"
+            fi
+          done

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Create tarball
+        run: |
+          git archive --format=tar.gz --prefix=opencortex-$(git describe --tags) HEAD -o opencortex.tar.gz
+
+      - name: Create zipball
+        run: |
+          git archive --format=zip --prefix=opencortex-$(git describe --tags) HEAD -o opencortex.zip
+
+      - name: Upload to GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            opencortex.tar.gz
+            opencortex.zip
+          generate_release_notes: true

.github/workflows/test.yml

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+name: Tests
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    container:
+      image: statusoftech/sbcl:2.4.0
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          apt-get update && apt-get install -y --no-install-recommends \
+            git curl openssl make automake autoconf gcc clisp python3 python3-pip
+
+      - name: Install Quicklisp
+        run: |
+          curl -L https://beta.quicklisp.org/quicklisp.lisp -o /tmp/quicklisp.lisp
+          sbcl --non-interactive \
+            --load /tmp/quicklisp.lisp \
+            --eval '(quicklisp-quickstart:install :path "~/quicklisp/")' \
+            --eval '(ql:add-to-init-file)'
+
+      - name: Install ASDF systems
+        run: |
+          sbcl --non-interactive \
+            --eval '(ql:quickload :opencortex)'
+        env:
+          HOME: /root
+
+      - name: Run tests
+        run: |
+          sbcl --non-interactive \
+            --eval '(ql:quickload :opencortex/tests)' \
+            --eval '(uiop:quit 0)'
+        env:
+          HOME: /root