Merge remote-tracking branch 'origin/main' into garrytan/upgrade-gstack-gbrain-v1

scripts/resolvers/preamble/generate-preamble-bash.ts

@@ -90,6 +90,19 @@ _CHECKPOINT_MODE=$(${ctx.paths.binDir}/gstack-config get checkpoint_mode 2>/dev/
 _CHECKPOINT_PUSH=$(${ctx.paths.binDir}/gstack-config get checkpoint_push 2>/dev/null || echo "false")
 echo "CHECKPOINT_MODE: $_CHECKPOINT_MODE"
 echo "CHECKPOINT_PUSH: $_CHECKPOINT_PUSH"
+# Plan-mode hint for skills like /spec that branch behavior on plan-mode state.
+# Claude Code exposes plan mode via system reminders; we detect best-effort
+# from CLAUDE_PLAN_FILE (set by the harness when plan mode is active) and
+# fall back to "inactive". Codex hosts and Claude execution mode both end up
+# inactive, which is the safe default (defaults to file+execute pipeline).
+if [ -n "\${CLAUDE_PLAN_FILE:-}\${GSTACK_PLAN_MODE_FORCE:-}" ]; then
+  export GSTACK_PLAN_MODE="active"
+elif [ "\${GSTACK_PLAN_MODE:-}" = "active" ]; then
+  export GSTACK_PLAN_MODE="active"
+else
+  export GSTACK_PLAN_MODE="inactive"
+fi
+echo "GSTACK_PLAN_MODE: $GSTACK_PLAN_MODE"
 [ -n "$OPENCLAW_SESSION" ] && echo "SPAWNED_SESSION: true" || true${ctx.host === 'gbrain' || ctx.host === 'hermes' ? `
 if command -v gbrain &>/dev/null; then
   _BRAIN_JSON=$(gbrain doctor --fast --json 2>/dev/null || echo '{}')

scripts/resolvers/preamble/generate-routing-injection.ts

@@ -33,6 +33,7 @@ Key routing rules:
 - Ship/deploy/PR → invoke /ship or /land-and-deploy
 - Save progress → invoke /context-save
 - Resume context → invoke /context-restore
+- Author a backlog-ready spec/issue → invoke /spec
 \`\`\`
 
 Then commit the change: \`git add CLAUDE.md && git commit -m "chore: add gstack skill routing rules to CLAUDE.md"\`