Update with support for /implement

scripts/bash/check-implementation-prerequisites.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -e
+JSON_MODE=false
+for arg in "$@"; do case "$arg" in --json) JSON_MODE=true ;; --help|-h) echo "Usage: $0 [--json]"; exit 0 ;; esac; done
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/common.sh"
+eval $(get_feature_paths)
+check_feature_branch "$CURRENT_BRANCH" || exit 1
+if [[ ! -d "$FEATURE_DIR" ]]; then echo "ERROR: Feature directory not found: $FEATURE_DIR"; echo "Run /specify first."; exit 1; fi
+if [[ ! -f "$IMPL_PLAN" ]]; then echo "ERROR: plan.md not found in $FEATURE_DIR"; echo "Run /plan first."; exit 1; fi
+if [[ ! -f "$TASKS" ]]; then echo "ERROR: tasks.md not found in $FEATURE_DIR"; echo "Run /tasks first."; exit 1; fi
+if $JSON_MODE; then
+  docs=(); [[ -f "$RESEARCH" ]] && docs+=("research.md"); [[ -f "$DATA_MODEL" ]] && docs+=("data-model.md"); ([[ -d "$CONTRACTS_DIR" ]] && [[ -n "$(ls -A "$CONTRACTS_DIR" 2>/dev/null)" ]]) && docs+=("contracts/"); [[ -f "$QUICKSTART" ]] && docs+=("quickstart.md"); [[ -f "$TASKS" ]] && docs+=("tasks.md");
+  json_docs=$(printf '"%s",' "${docs[@]}"); json_docs="[${json_docs%,}]"; printf '{"FEATURE_DIR":"%s","AVAILABLE_DOCS":%s}\n' "$FEATURE_DIR" "$json_docs"
+else
+  echo "FEATURE_DIR:$FEATURE_DIR"; echo "AVAILABLE_DOCS:"; check_file "$RESEARCH" "research.md"; check_file "$DATA_MODEL" "data-model.md"; check_dir "$CONTRACTS_DIR" "contracts/"; check_file "$QUICKSTART" "quickstart.md"; check_file "$TASKS" "tasks.md"; fi

scripts/powershell/check-implementation-prerequisites.ps1

@@ -0,0 +1,42 @@
+#!/usr/bin/env pwsh
+[CmdletBinding()]
+param([switch]$Json)
+$ErrorActionPreference = 'Stop'
+. "$PSScriptRoot/common.ps1"
+
+$paths = Get-FeaturePathsEnv
+if (-not (Test-FeatureBranch -Branch $paths.CURRENT_BRANCH)) { exit 1 }
+
+if (-not (Test-Path $paths.FEATURE_DIR -PathType Container)) {
+    Write-Output "ERROR: Feature directory not found: $($paths.FEATURE_DIR)"
+    Write-Output "Run /specify first to create the feature structure."
+    exit 1
+}
+if (-not (Test-Path $paths.IMPL_PLAN -PathType Leaf)) {
+    Write-Output "ERROR: plan.md not found in $($paths.FEATURE_DIR)"
+    Write-Output "Run /plan first to create the plan."
+    exit 1
+}
+if (-not (Test-Path $paths.TASKS -PathType Leaf)) {
+    Write-Output "ERROR: tasks.md not found in $($paths.FEATURE_DIR)"
+    Write-Output "Run /tasks first to create the task list."
+    exit 1
+}
+
+if ($Json) {
+    $docs = @()
+    if (Test-Path $paths.RESEARCH) { $docs += 'research.md' }
+    if (Test-Path $paths.DATA_MODEL) { $docs += 'data-model.md' }
+    if ((Test-Path $paths.CONTRACTS_DIR) -and (Get-ChildItem -Path $paths.CONTRACTS_DIR -ErrorAction SilentlyContinue | Select-Object -First 1)) { $docs += 'contracts/' }
+    if (Test-Path $paths.QUICKSTART) { $docs += 'quickstart.md' }
+    if (Test-Path $paths.TASKS) { $docs += 'tasks.md' }
+    [PSCustomObject]@{ FEATURE_DIR=$paths.FEATURE_DIR; AVAILABLE_DOCS=$docs } | ConvertTo-Json -Compress
+} else {
+    Write-Output "FEATURE_DIR:$($paths.FEATURE_DIR)"
+    Write-Output "AVAILABLE_DOCS:"
+    Test-FileExists -Path $paths.RESEARCH -Description 'research.md' | Out-Null
+    Test-FileExists -Path $paths.DATA_MODEL -Description 'data-model.md' | Out-Null
+    Test-DirHasFiles -Path $paths.CONTRACTS_DIR -Description 'contracts/' | Out-Null
+    Test-FileExists -Path $paths.QUICKSTART -Description 'quickstart.md' | Out-Null
+    Test-FileExists -Path $paths.TASKS -Description 'tasks.md' | Out-Null
+}