Consolidate duplicate build workflows and add workflow documentation (#7989)

## Problem

Two workflows (`build-test-package.yml` and
`build-test-package-parallel.yml`) performed identical
build/test/package operations with different execution strategies. No
central documentation explained workflow purposes or dependencies.

## Changes

### Workflow Consolidation

- **Deleted** `build-test-package.yml` (sequential execution, 298 lines)
- **Renamed** `build-test-package-parallel.yml` →
`build-test-package.yml` (parallel execution, 384 lines)
- **Updated** workflow name: removed "(Parallel)" suffix since it's now
canonical

The consolidated workflow uses a 3-job structure:
1. `build` - compile, validate PHP syntax, create artifacts
2. `test-root` - test root path installation (`/`)
3. `test-subdir` - test subdirectory installation (`/churchcrm`)

Jobs 2-3 run in parallel using shared build artifacts from job 1.

### Documentation Added

**`.github/workflows/README.md` (11KB)** - Reference guide:
- Purpose and triggers for all 8 workflows
- Step-by-step functionality breakdown
- Workflow dependency diagram (Mermaid)
- Best practices and troubleshooting
- Required secrets (POEDITOR_TOKEN)

**`.github/WORKFLOW_ANALYSIS.md` (16KB)** - Technical analysis:
- Complete workflow audit findings
- Security assessment (DevSkim only - intentional, no duplicates)
- Performance metrics (15-20min avg, well-optimized)
- Prioritized recommendations (Dependabot, test coverage)
- Maintenance guidelines

## Analysis Summary

All 8 workflows serve distinct purposes:

| Category | Count | Workflows |
|----------|-------|-----------|
| Build & Test | 1 | `build-test-package.yml` (consolidated) |
| Code Quality | 1 | `ci.yml` (TypeScript/ESLint) |
| Localization | 2 | `locale-poeditor-download.yml`, `locale-update.yml`
|
| Security | 1 | `security-devskim.yml` (SARIF upload) |
| Automation | 3 | `issue-comment.yml`, `stale.yml`, `start-release.yml`
|

No further consolidation opportunities identified. Security scanning
intentionally uses single tool (DevSkim) - adding CodeQL would be
supplementary, not duplicate.

## Stats

- Workflows: 9 → 8 (11% reduction)
- Net changes: +1000 lines (mostly documentation), -492 lines (removed
duplicate)
- CI/CD performance: unchanged (parallel strategy already in use)

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.github/workflows/README.md

@@ -0,0 +1,312 @@
+# GitHub Actions Workflows
+
+This directory contains all automated workflows for the ChurchCRM project. This document provides an overview of each workflow, its purpose, and when it runs.
+
+## Build & Test Workflows
+
+### build-test-package.yml
+**Purpose:** Main CI/CD pipeline for building, testing, and packaging ChurchCRM
+
+**Triggers:**
+- Pull requests to `master`, `develop`, or `hotfix/**` branches
+- Pushes to `master`, `develop`, or `hotfix/**` branches
+- Ignores changes to documentation, markdown files, and LICENSE
+
+**What it does:**
+1. **Build Job:** Compiles the application, validates PHP syntax, and creates build artifacts
+2. **Test Jobs (Parallel):**
+   - `test-root`: Tests installation at root path (`/`)
+   - `test-subdir`: Tests installation in subdirectory (`/churchcrm`)
+3. **Package Job:** Creates release artifacts with version-based naming
+
+**Key Features:**
+- Runs tests in parallel for faster CI feedback
+- Tests both root and subdirectory installation scenarios
+- Uploads build artifacts for releases
+- Comprehensive logging and Docker container logs on failure
+
+**Artifacts:**
+- `ChurchCRM-{version}.zip` for master branch
+- `ChurchCRM-{version}-PR{number}.zip` for pull requests
+- `cypress-artifacts-*` on test failures (logs, screenshots, videos)
+
+---
+
+## Code Quality Workflows
+
+### ci.yml
+**Purpose:** Quick code quality checks for TypeScript and linting
+
+**Triggers:**
+- Pushes to `master` branch
+- Pull requests to `master` branch
+
+**What it does:**
+1. Runs TypeScript type checking (`tsc --noEmit`)
+2. Runs ESLint on React components
+
+**Key Features:**
+- Fast feedback on code quality issues
+- Runs independently from main build/test pipeline
+- Uses Node.js 22.x
+
+---
+
+## Localization Workflows
+
+### locale-poeditor-download.yml
+**Purpose:** Download and sync translations from POEditor translation platform
+
+**Triggers:**
+- **Scheduled:** Daily at midnight UTC
+- **Manual:** Via workflow_dispatch with options:
+  - `operation_mode`: Choose between `download-and-audit` or `audit-only`
+  - `skip_audit`: Skip audit step for faster execution
+
+**What it does:**
+1. Downloads latest translations from POEditor (requires `POEDITOR_TOKEN` secret)
+2. Validates download integrity (checks for empty files, regressions)
+3. Generates base term updates for locale variants (e.g., Portuguese variants)
+4. Generates missing terms reports for incomplete locales
+5. Runs locale audit to check translation completeness
+6. Creates a PR with all changes to `locale/{version}` branch
+
+**Key Features:**
+- Comprehensive validation prevents translation data loss
+- Detects and fails on locale regressions
+- Generates reports to help translators identify missing terms
+- Automatic PR creation with detailed changelog
+
+**Artifacts:**
+- Translation JSON files in `src/locale/i18n/`
+- Base term updates in `locale/base-term-updates/`
+- Missing terms reports in `locale/missing-terms/poeditor-*.json`
+
+### locale-update.yml
+**Purpose:** Generate translation terms from application source code
+
+**Triggers:**
+- Pushes to `master` branch that modify files in `src/**`
+- Manual trigger via workflow_dispatch
+
+**What it does:**
+1. Starts Docker containers for locale extraction
+2. Runs `npm run locale:build` to extract gettext strings from PHP/JS code
+3. Updates `locale/terms/messages.po` with new translatable strings
+4. Creates a PR if meaningful changes are detected (ignores header-only changes)
+
+**Key Features:**
+- Automatically detects new strings that need translation
+- Skips PR creation for trivial changes (header updates only)
+- Runs inside Docker to match production environment
+- Integrated with POEditor workflow for complete translation pipeline
+
+**Workflow Integration:**
+1. Developer adds `gettext()` or `i18next.t()` calls in code
+2. This workflow extracts new terms to `messages.po`
+3. Terms are uploaded to POEditor for translation
+4. `locale-poeditor-download.yml` brings translations back
+
+---
+
+## Security Workflows
+
+### security-devskim.yml
+**Purpose:** Automated security vulnerability scanning using Microsoft DevSkim
+
+**Triggers:**
+- **Pushes:** To `master` or `develop` branches (when code files change)
+- **Pull Requests:** To `master` branch (when code files change)
+- **Scheduled:** Weekly on Mondays at 6:00 AM UTC
+- **Manual:** Via workflow_dispatch with options:
+  - `scan_severity`: Minimum severity level (`low`, `medium`, `high`, `critical`)
+  - `fail_on_error`: Whether to fail the workflow on security issues
+
+**What it does:**
+1. Installs Microsoft DevSkim CLI
+2. Scans all code files for security vulnerabilities
+3. Generates SARIF report with findings
+4. Uploads results to GitHub Security tab
+5. Creates step summary with issue counts and details
+
+**Key Features:**
+- Detects common security patterns (XSS, SQL injection, crypto issues, etc.)
+- Configurable severity threshold
+- Integrates with GitHub Security tab for issue tracking
+- Can be configured to fail builds on security issues
+- Archives SARIF results for 30 days
+
+**Scanned File Types:**
+- PHP, JavaScript, TypeScript
+- JSON, YAML, SQL
+
+### issue-comment.yml
+**Purpose:** Automated issue triage and security CVE handling
+
+**Triggers:**
+- When new issues are opened
+
+**What it does:**
+1. Detects issue type based on content:
+   - **Security CVE/GHSA disclosures** (highest priority)
+   - **System info reports** (in-app bug reporter)
+   - **Bug reports**
+   - **Questions**
+   - **Generic** (fallback)
+2. Posts appropriate template comment from `.github/issue-comments/`
+3. **For security issues:** Automatically closes, labels, and directs to private disclosure
+
+**Key Features:**
+- Prevents public disclosure of security vulnerabilities
+- Automatically labels security issues with `security` and `security-delete-required`
+- Provides helpful guidance based on issue type
+- Thanks users who use the in-app bug reporter
+
+**Security Protection:**
+- Detects CVE-YYYY-NNNN and GHSA-xxxx-xxxx-xxxx patterns
+- Closes security issues immediately to prevent exploitation
+- Directs reporters to GitHub Security Advisories for private disclosure
+- Flags issues for manual deletion by repository admins
+
+---
+
+## Automation Workflows
+
+### stale.yml
+**Purpose:** Automatically manage stale issues and pull requests
+
+**Triggers:**
+- **Scheduled:** Daily at 1:30 AM UTC
+- **Manual:** Via workflow_dispatch with options:
+  - `dry_run`: Preview actions without making changes
+  - `debug_only`: Enable debug logging
+
+**What it does:**
+1. Marks issues stale after 30 days of inactivity
+2. Marks PRs stale after 45 days of inactivity
+3. Closes stale items after 15 additional days
+4. Posts helpful messages explaining how to keep issues/PRs active
+
+**Key Features:**
+- Exempts security issues (labels: `security`, `vulnerability`, `cve`, `security-fix`)
+- Exempts pinned and high-priority items
+- Removes stale label when activity resumes
+- Friendly, helpful messages for contributors
+- Rate-limited to prevent API exhaustion (100 operations per run)
+
+**Exempt Labels:**
+- **Issues:** `pinned`, `security`, `vulnerability`, `cve`, `bug`, `enhancement`, `feature`, `good first issue`, `help wanted`, `priority:high`, `priority:critical`, `security-fix`
+- **PRs:** `pinned`, `security`, `vulnerability`, `security-fix`, `work-in-progress`, `do-not-merge`, `priority:high`, `priority:critical`
+
+### start-release.yml
+**Purpose:** Initiate a new release by updating version numbers
+
+**Triggers:**
+- **Manual only:** Via workflow_dispatch
+- **Required input:** `version` (e.g., "6.1.0")
+
+**What it does:**
+1. Runs `./scripts/startNewRelease.js` with the specified version
+2. Updates version in:
+   - `package.json` and `package-lock.json`
+   - `src/composer.json` and `src/composer.lock`
+   - `src/mysql/upgrade.json`
+   - `demo/ChurchCRM-Database.sql`
+3. Creates a new branch `build/{version}`
+4. Commits all version changes
+5. Creates a pull request to `master` branch
+
+**Key Features:**
+- Automated version bumping across all package files
+- Consistent version numbering
+- Creates clean release PRs
+- Integrates with main build pipeline when merged
+
+**Release Workflow:**
+1. Maintainer triggers this workflow with new version number
+2. Workflow creates PR with version updates
+3. PR is reviewed and merged to `master`
+4. `build-test-package.yml` creates release artifacts
+5. Artifacts are used to create GitHub release
+
+---
+
+## Workflow Dependencies
+
+```mermaid
+graph LR
+    A[Code Change] --> B[ci.yml]
+    A --> C[build-test-package.yml]
+    A --> D[locale-update.yml]
+    A --> E[security-devskim.yml]
+    D --> F[locale-poeditor-download.yml]
+    F --> A
+    G[New Issue] --> H[issue-comment.yml]
+    I[Schedule] --> F
+    I --> J[stale.yml]
+    I --> E
+    K[Manual] --> L[start-release.yml]
+    L --> C
+```
+
+---
+
+## Best Practices
+
+### For Maintainers
+
+1. **Always review security-devskim.yml results** in the Security tab
+2. **Don't skip locale workflows** - translations are important for users
+3. **Use start-release.yml** instead of manually updating version numbers
+4. **Monitor stale.yml** to ensure important issues aren't auto-closed
+
+### For Contributors
+
+1. **Expect build-test-package.yml to run** on all PRs (takes ~15-20 minutes)
+2. **Fix ci.yml failures** before requesting review (TypeScript/lint errors)
+3. **Add gettext() wrapping** for new UI strings so locale-update.yml can extract them
+4. **Use GitHub Security Advisories** for security issues, not public issues
+
+---
+
+## Secrets Required
+
+The following GitHub secrets must be configured for workflows to function:
+
+- `GITHUB_TOKEN` - Automatically provided by GitHub Actions (no configuration needed)
+- `POEDITOR_TOKEN` - API token for POEditor translation platform (required for locale-poeditor-download.yml)
+
+---
+
+## Troubleshooting
+
+### Build Failures
+
+1. Check `build-test-package.yml` logs for specific error
+2. Download `cypress-artifacts-*` to see screenshots/videos of test failures
+3. Review Docker container logs in the artifact
+4. Check `src/logs/` in artifacts for PHP errors
+
+### Security Scan False Positives
+
+1. Review the finding in GitHub Security tab
+2. Add exception to `.devskim.json` if it's a false positive
+3. Document why it's a false positive in the configuration
+
+### Locale Issues
+
+1. Check POEditor for missing translations
+2. Review `locale/missing-terms/` for reports on incomplete locales
+3. Use `locale-poeditor-download.yml` manual trigger with `audit-only` mode
+
+---
+
+## Maintenance Notes
+
+- **Last reviewed:** February 2026
+- **Next review recommended:** August 2026 or when major GitHub Actions updates are released
+
+### Recent Changes
+
+- **February 2026:** Consolidated duplicate build workflows (removed old sequential version, kept parallel version)
+- **February 2026:** Added comprehensive workflow documentation