feat: add full project - backend, frontend, docker, specs and configs

.specify/extensions/git/scripts/powershell/git-common.ps1

@@ -0,0 +1,50 @@
+#!/usr/bin/env pwsh
+# Git-specific common functions for the git extension.
+# Extracted from scripts/powershell/common.ps1 — contains only git-specific
+# branch validation and detection logic.
+
+function Test-HasGit {
+    param([string]$RepoRoot = (Get-Location))
+    try {
+        if (-not (Test-Path (Join-Path $RepoRoot '.git'))) { return $false }
+        if (-not (Get-Command git -ErrorAction SilentlyContinue)) { return $false }
+        git -C $RepoRoot rev-parse --is-inside-work-tree 2>$null | Out-Null
+        return ($LASTEXITCODE -eq 0)
+    } catch {
+        return $false
+    }
+}
+
+function Test-FeatureBranch {
+    param(
+        [string]$Branch,
+        [bool]$HasGit = $true
+    )
+
+    # For non-git repos, we can't enforce branch naming but still provide output
+    if (-not $HasGit) {
+        Write-Warning "[specify] Warning: Git repository not detected; skipped branch validation"
+        return $true
+    }
+
+    # Reject malformed timestamps (7-digit date or no trailing slug)
+    $hasMalformedTimestamp = ($Branch -match '^[0-9]{7}-[0-9]{6}-') -or
+                            ($Branch -match '^(?:\d{7}|\d{8})-\d{6}$')
+    if ($hasMalformedTimestamp) {
+        Write-Output "ERROR: Not on a feature branch. Current branch: $Branch"
+        Write-Output "Feature branches should be named like: 001-feature-name or 20260319-143022-feature-name"
+        return $false
+    }
+
+    # Accept sequential (>=3 digits followed by hyphen) or timestamp (YYYYMMDD-HHMMSS-*)
+    $isSequential = ($Branch -match '^[0-9]{3,}-') -and (-not $hasMalformedTimestamp)
+    $isTimestamp = $Branch -match '^\d{8}-\d{6}-'
+
+    if ($isSequential -or $isTimestamp) {
+        return $true
+    }
+
+    Write-Output "ERROR: Not on a feature branch. Current branch: $Branch"
+    Write-Output "Feature branches should be named like: 001-feature-name or 20260319-143022-feature-name"
+    return $false
+}