Add CI (build+test) and tools/check.sh (#101)

Co-authored-by: claude <claude@jpaul.io>
Co-committed-by: claude <claude@jpaul.io>

.gitea/workflows/ci.yml

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+# PR + push CI for the course. Reports a commit status the claude-deck autopilot
+# review gate reads, and runs the same build/test the gate runs on the merged tree:
+#   build = render the wiki from this tree (proves the generator works)
+#   test  = tools/check.sh (lab compile + parse + no-slop guard + structure)
+name: CI
+on:
+  pull_request: {}
+  push:
+    branches: [main]
+  workflow_dispatch: {}
+
+jobs:
+  check:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+      - name: build (render wiki) + test (check.sh)
+        shell: bash
+        run: |
+          set -euo pipefail
+          command -v python3 >/dev/null || { apt-get update && apt-get install -y --no-install-recommends python3 python3-pip; }
+          python3 -c "import yaml" 2>/dev/null || python3 -m pip install --quiet pyyaml 2>/dev/null || true
+          python3 tools/build_wiki.py --repo-root . --out /tmp/awc-wiki-build \
+            --web-base https://git.jpaul.io/justin/ai-workflow-course --branch main --host gitea
+          bash tools/check.sh

.github/workflows/ci.yml

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+# PR + push CI for the GitHub mirror. Mirrors .gitea/workflows/ci.yml:
+#   build = render the wiki from this tree; test = tools/check.sh.
+name: CI
+on:
+  pull_request: {}
+  push:
+    branches: [main]
+  workflow_dispatch: {}
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+      - name: build (render wiki) + test (check.sh)
+        shell: bash
+        run: |
+          set -euo pipefail
+          python3 -m pip install --quiet pyyaml || true
+          python3 tools/build_wiki.py --repo-root . --out /tmp/awc-wiki-build \
+            --web-base https://github.com/justin/ai-workflow-course --branch main --host github
+          bash tools/check.sh

tools/check.sh

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+#!/usr/bin/env bash
+# Test suite for ai-workflow-course. Exits non-zero on any failure.
+#
+# Used two ways:
+#   1. CI (.gitea/workflows/ci.yml, .github/workflows/ci.yml) on every PR + push.
+#   2. The claude-deck autopilot review gate's `test` command (runs on the
+#      merged-throwaway tree before an auto-merge).
+#
+# Dependency-light: python3 + grep + bash. The YAML check is skipped (not failed)
+# if PyYAML is unavailable, so the suite still runs on a bare runner.
+set -uo pipefail
+cd "$(dirname "$0")/.." || exit 2
+fail=0
+note() { printf '%s\n' "$*"; }
+
+# 1) Lab Python compiles (skip the intentional paste-in fragment in Module 12).
+while IFS= read -r f; do
+  python3 -m py_compile "$f" 2>/dev/null || { note "FAIL py-compile: $f"; fail=1; }
+done < <(find modules capstone -name '*.py' ! -name 'bad-clear-snippet.py')
+
+# 2) Shell scripts parse.
+while IFS= read -r f; do
+  bash -n "$f" 2>/dev/null || { note "FAIL sh-parse: $f"; fail=1; }
+done < <(find modules capstone tools -name '*.sh')
+
+# 3) JSON parses.
+while IFS= read -r f; do
+  python3 -c "import json,sys; json.load(open(sys.argv[1]))" "$f" 2>/dev/null || { note "FAIL json: $f"; fail=1; }
+done < <(find modules capstone -name '*.json')
+
+# 4) YAML parses (only if PyYAML is present; otherwise skipped, not failed).
+if python3 -c "import yaml" 2>/dev/null; then
+  while IFS= read -r f; do
+    python3 -c "import yaml,sys; list(yaml.safe_load_all(open(sys.argv[1])))" "$f" 2>/dev/null || { note "FAIL yaml: $f"; fail=1; }
+  done < <(find modules capstone .gitea .github -name '*.yml' -o -name '*.yaml' 2>/dev/null)
+else
+  note "skip yaml (PyYAML not installed)"
+fi
+
+# 5) No-slop guard: no em-dash in prose. The character is built from its codepoint
+#    so this script holds no literal em-dash. Binaries and __pycache__ are skipped;
+#    the only allowed em-dash is the regex character class in tools/build_wiki.py.
+emd=$(printf '\u2014')
+emdash=$(grep -rlI --exclude-dir=__pycache__ --exclude='*.pyc' "$emd" \
+  README.md AGENTS.md _TEMPLATE.md handoff.md the-workflow-syllabus.md \
+  modules capstone blog tools 2>/dev/null | grep -v 'tools/build_wiki.py' || true)
+if [ -n "$emdash" ]; then
+  note "FAIL em-dash present in:"; printf '  %s\n' $emdash; fail=1
+fi
+
+# 6) Structure: every module + capstone README has the core template sections.
+for d in modules/*/ capstone/; do
+  f="${d}README.md"
+  [ -f "$f" ] || { note "FAIL missing README: $d"; fail=1; continue; }
+  for h in "## Prerequisites" "## Hands-on lab" "## Where it breaks"; do
+    grep -qF "$h" "$f" || { note "FAIL missing section '$h': $f"; fail=1; }
+  done
+done
+
+if [ "$fail" = 0 ]; then note "check.sh: PASS"; else note "check.sh: FAIL"; fi
+exit "$fail"