implement six-skill gstack 2 runtime

bin/dev-setup

@@ -56,31 +56,14 @@ if [ ! -e "$AGENTS_LINK" ]; then
   ln -s "$REPO_ROOT" "$AGENTS_LINK"
 fi
 
-# 6. Run setup via the symlink so it detects .claude/skills/ as its parent.
+# 6. Do not call the user runtime installer from a development worktree.
 #
-# Workspace/dev setup MUST be non-interactive: Conductor runs this under a
-# forwarded pty, so any `read` in setup (skill-prefix prompt, plan-tune hook
-# consent) would hang the workspace forever. Detaching stdin makes every setup
-# prompt take its smart non-interactive default (flat skill names, etc.).
+# GStack 2 delegates skill placement to the standard Agent Skills installer,
+# and root ./setup installs only the optional per-user runtime. Development can
+# execute the checked-out binaries directly, so invoking ./setup here would
+# mutate user state without adding any workspace capability.
 #
-# `--plan-tune-hooks=prompt` is load-bearing, not redundant: stdin alone only
-# suppresses the *prompt* branch. A saved `plan_tune_hooks: yes` or an exported
-# GSTACK_PLAN_TUNE_HOOKS=yes would still resolve to "install" and rewrite the
-# user's global ~/.claude/settings.json to point at THIS ephemeral worktree —
-# which breaks once the workspace is deleted. The flag has highest precedence,
-# so it pins resolution to "prompt", and closed stdin then makes prompt-mode a
-# no-op skip (no install, no decline marker). A dev workspace must never mutate
-# global settings.json. To install the hooks, run `./setup --plan-tune-hooks`
-# directly (outside dev-setup). Saved prefix/other config preferences still apply.
-#
-# GSTACK_SKIP_GBRAIN_REGEN=1 is passed INLINE (not exported) so it scopes to
-# exactly this nested setup call and can't leak into any other setup path. It
-# tells setup NOT to regenerate the gbrain :user variant into the tracked
-# worktree (that would dirty checked-in source). We render it into an untracked
-# per-workspace dir below instead.
-GSTACK_SKIP_GBRAIN_REGEN=1 "$GSTACK_LINK/setup" --plan-tune-hooks=prompt </dev/null
-
-# 7. Brain-aware (gbrain) blocks — render into an untracked workspace dir.
+# Brain-aware (gbrain) blocks render into an untracked workspace dir.
 #
 # The worktree's SKILL.md files stay canonical (the guard above). If gbrain is
 # installed, render the :user variant (with GBRAIN_CONTEXT_LOAD +
@@ -88,8 +71,8 @@ GSTACK_SKIP_GBRAIN_REGEN=1 "$GSTACK_LINK/setup" --plan-tune-hooks=prompt </dev/n
 # and repoint the workspace's SKILL.md symlinks at it. gen-skill-docs --out-dir
 # also rewrites the section-base path so section reads resolve to the render, not
 # the global install. Result: this workspace gets the full gbrain experience
-# while git stays clean. Other projects pick up blocks via `gstack-config
-# gbrain-refresh` (printed below).
+# while git stays clean. Production skill placement and updates remain owned by
+# the standard Agent Skills installer.
 GBRAIN_DETECT="$REPO_ROOT/bin/gstack-gbrain-detect"
 RENDER_DIR="$REPO_ROOT/.claude/gstack-rendered"
 if [ -x "$GBRAIN_DETECT" ] && "$GBRAIN_DETECT" --is-ok 2>/dev/null; then
@@ -121,7 +104,8 @@ echo "  .claude/skills/gstack → $REPO_ROOT"
 echo "  .agents/skills/gstack → $REPO_ROOT"
 echo "Edit any SKILL.md and test immediately — no copy/deploy needed."
 echo ""
-echo "To make brain-aware blocks live across your OTHER projects too, run:"
+echo "To refresh managed gbrain detection state, run:"
 echo "  gstack-config gbrain-refresh"
+echo "Then use the standard Agent Skills installer for production skill updates."
 echo ""
 echo "To tear down: bin/dev-teardown"