fix: make Forge update-context scripts handle AGENTS.md directly

- Add fallback logic to update/create AGENTS.md when shared script doesn't support forge yet
- Check if shared dispatcher knows about 'forge' before delegating
- If shared script doesn't support forge, handle AGENTS.md updates directly:
  - Add Forge section to existing AGENTS.md if not present
  - Create new AGENTS.md with Forge section if file doesn't exist
- Both bash and PowerShell scripts implement same logic
- Prevents 'Unknown agent type' errors until shared scripts add forge support
- Future-compatible: automatically delegates when shared script supports forge

Addresses reviewer feedback about update-context scripts failing without forge support.

src/specify_cli/integrations/forge/scripts/update-context.ps1

@@ -20,4 +20,31 @@ if (-not $repoRoot -or -not (Test-Path (Join-Path $repoRoot '.specify'))) {
     }
 }
 
-& "$repoRoot/.specify/scripts/powershell/update-agent-context.ps1" -AgentType forge
+$sharedScript = "$repoRoot/.specify/scripts/powershell/update-agent-context.ps1"
+# If the shared dispatcher already knows about "forge", delegate to it.
+if ((Test-Path $sharedScript) -and (Select-String -Path $sharedScript -Pattern "'forge'|`"forge`"" -Quiet)) {
+    & $sharedScript -AgentType forge
+    exit $LASTEXITCODE
+}
+
+# Forge-specific handling: update or create AGENTS.md directly until the shared
+# dispatcher script supports -AgentType forge.
+$agentsFile = Join-Path $repoRoot 'AGENTS.md'
+if (Test-Path $agentsFile) {
+    $agentsContent = Get-Content -Path $agentsFile -ErrorAction Stop
+    # Only add a Forge entry if one does not already exist.
+    if (-not ($agentsContent | Where-Object { $_ -match '\bForge\b' })) {
+        Add-Content -Path $agentsFile -Value ''
+        Add-Content -Path $agentsFile -Value '## Forge'
+        Add-Content -Path $agentsFile -Value '- Forge integration agent context'
+    }
+} else {
+    $newContent = @(
+        '# Agents'
+        ''
+        '## Forge'
+        '- Forge integration agent context'
+    )
+    $newContent | Set-Content -Path $agentsFile -Encoding UTF8
+}
+exit 0

src/specify_cli/integrations/forge/scripts/update-context.sh

@@ -25,4 +25,26 @@ if [ -z "${REPO_ROOT:-}" ]; then
   fi
 fi
 
-exec "$REPO_ROOT/.specify/scripts/bash/update-agent-context.sh" forge
+shared_script="$REPO_ROOT/.specify/scripts/bash/update-agent-context.sh"
+# If the shared dispatcher already knows about "forge", delegate to it.
+if grep -q 'forge)' "$shared_script" 2>/dev/null; then
+  exec "$shared_script" forge
+fi
+
+# Forge-specific handling: update or create AGENTS.md directly until the shared
+# dispatcher script supports "forge".
+agents_file="$REPO_ROOT/AGENTS.md"
+if [ -f "$agents_file" ]; then
+  # Only add a Forge entry if one does not already exist.
+  if ! grep -q '\bForge\b' "$agents_file"; then
+    printf '\n## Forge\n- Forge integration agent context\n' >> "$agents_file"
+  fi
+else
+  cat > "$agents_file" << 'EOF'
+# Agents
+
+## Forge
+- Forge integration agent context
+EOF
+fi
+exit 0