Add test suite and development infrastructure

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run unit tests
+        run: npm test
+
+      - name: Check app script syntax
+        run: node --check src/app/main.js
+
+      - name: Verify static entrypoint
+        run: test -f index.html && grep -q 'type="module" src="src/app/main.js"' index.html

.github/workflows/deploy.yml

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+name: CD
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+concurrency:
+  group: pages-production
+  cancel-in-progress: false
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run unit tests
+        run: npm test
+
+      - name: Check app script syntax
+        run: node --check src/app/main.js
+
+  deploy:
+    name: Deploy to GitHub Pages
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Prepare static site
+        run: |
+          mkdir -p _site
+          cp index.html _site/
+          cp -r src _site/
+          touch _site/.nojekyll
+
+      - name: Deploy to gh-pages
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: _site
+          branch: gh-pages
+          clean: false
+          clean-exclude: pr-preview/
+          force: false
+          commit-message: Deploy production site from ${{ github.sha }}

.github/workflows/preview.yml

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+name: PR Preview
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - closed
+
+permissions:
+  contents: write
+  pull-requests: write
+
+concurrency:
+  group: preview-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  preview:
+    name: Deploy PR preview
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        if: github.event.action != 'closed'
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+          cache: npm
+
+      - name: Install dependencies
+        if: github.event.action != 'closed'
+        run: npm ci
+
+      - name: Run unit tests
+        if: github.event.action != 'closed'
+        run: npm test
+
+      - name: Prepare static site
+        if: github.event.action != 'closed'
+        run: |
+          mkdir -p _site
+          cp index.html _site/
+          cp -r src _site/
+          touch _site/.nojekyll
+
+      - name: Deploy preview
+        uses: rossjrw/pr-preview-action@v1
+        with:
+          source-dir: ./_site
+          preview-branch: gh-pages
+          qr-code: true
+          wait-for-pages-deployment: false

.gitignore

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+node_modules/
+coverage/

CHANGELOG.md

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+# Changelog
+
+## Testing infrastructure (2026-06-15)
+
+### Added
+- Extracted pure logic into `src/data/constants.js` and `src/lib/*` modules (domain, tree, dates, capture).
+- Moved the app script to `src/app/main.js` and wired `index.html` as an ES module entry point.
+- Vitest unit tests under `tests/` for domain inference, task tree math, gantt dates, and capture parsing.
+- `package.json` with `npm test` / `npm run test:watch`.
+- GitHub Actions workflow (`.github/workflows/ci.yml`) to run tests on push and PR.
+- GitHub Actions CD workflow (`.github/workflows/deploy.yml`) to deploy the static app to GitHub Pages after tests pass on `main`.
+
+### Public repo / Pages (2026-06-15)
+
+### Changed
+- Restored GitHub Pages PR previews (`pr-preview/pr-<n>/`) and automatic production deploy on `main`.
+- Removed private-repo artifact-only preview and `ENABLE_GITHUB_PAGES` gate.
+
+### Setup
+- Pages source: **Deploy from branch → gh-pages → / (root)**
+- Actions: **Read and write permissions**
+
+- The prototype was a single 1700+ line inline script with no automated checks.
+- Pulling testable logic into modules gives a stable base for refactors and new features without changing UI behavior.
+- ES modules keep the zero-build-step workflow (open `index.html` or serve statically) while enabling Node-based unit tests.

README.md

@@ -1 +1,76 @@
 # Task Management Tool
+
+TaskBoard prototype: a single-page task planner with gantt timeline, balance-scale dashboard, voice capture, and transcript extraction.
+
+AI-perc:47%
+
+## Run locally
+
+Open `index.html` in a browser, or serve the repo root:
+
+```bash
+npx --yes serve .
+```
+
+## Development
+
+Install dependencies and run tests:
+
+```bash
+npm install
+npm test
+```
+
+Watch mode:
+
+```bash
+npm run test:watch
+```
+
+## Project layout
+
+| Path | Purpose |
+|------|---------|
+| `index.html` | UI markup and styles |
+| `src/app/main.js` | Application logic (DOM, rendering, interactions) |
+| `src/data/constants.js` | Team roster, clients, sizes, colors |
+| `src/lib/` | Testable pure functions (domain, tree, dates, capture) |
+| `tests/` | Vitest unit tests |
+
+## Before opening a PR
+
+1. Run `npm run ci` and confirm all checks pass.
+2. Smoke-check the UI in a browser (filter, gantt, task detail sheet).
+3. Update `CHANGELOG.md` if you change behavior.
+
+## CI/CD
+
+| Workflow | Trigger | What it does |
+|----------|---------|--------------|
+| [CI](.github/workflows/ci.yml) | PR + push to `main` | `npm test`, syntax check, entrypoint verification |
+| [PR Preview](.github/workflows/preview.yml) | Pull requests | Tests, deploys preview to Pages, comments URL on the PR |
+| [CD](.github/workflows/deploy.yml) | Push to `main` | Tests, deploys production site to `gh-pages` |
+
+### One-time setup (after making the repo public)
+
+1. **Settings → Pages → Build and deployment → Source:** `Deploy from a branch`
+2. **Branch:** `gh-pages` / `/ (root)`
+3. **Settings → Actions → General → Workflow permissions:** `Read and write permissions`
+
+### See the UI on a pull request
+
+After checks pass, a bot comment on the PR includes a link like:
+
+`https://summon-rnd.github.io/task-manager/pr-preview/pr-<number>/`
+
+### Production URL (after merge to `main`)
+
+`https://summon-rnd.github.io/task-manager/`
+
+### Local preview
+
+```bash
+gh pr checkout <PR_NUMBER>
+npm install
+npx --yes serve .
+```