v1.57.9.0 feat: source-clean gbrain render (dev-setup --out-dir + machine-wide gbrain-refresh) (#1951)

* feat(gbrain-detect): add --is-ok live-detection exit-code gate

Single source of truth for 'is gbrain usable'. Runs live detection (never
reads the possibly-stale gbrain-detection.json) and exits 0 iff status is ok,
so setup, bin/dev-setup, and gstack-config can gate brain-aware rendering on
one shared check instead of re-grepping the JSON.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(gen-skill-docs): add --out-dir with surgical section-path rewrite

--out-dir <abs-dir> mirrors the Claude skill tree (SKILL.md + sections) into a
separate directory instead of writing in place, and rewrites the literal
section-base path (~/.claude/skills/gstack/<skill>/sections/) in generated
content to point at the out-dir. The rewrite is surgical: only /sections/ paths
move; bin/, browse/, docs/ references stay pointed at the global install.
Global extras (proactive-suggestions.json) are skipped in out-dir mode. Default
(no flag) behavior is unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(dev-setup): render gbrain :user variant to an untracked workspace dir

Stops the dev/Conductor workspace from dirtying tracked SKILL.md source. setup
honors GSTACK_SKIP_GBRAIN_REGEN (passed inline by dev-setup, never exported) and
skips the in-place :user regen; detection is still persisted (PID-unique tmp so
concurrent workspaces can't clobber it). dev-setup instead renders the :user
variant into .claude/gstack-rendered (gitignored, per-workspace) and repoints
the workspace SKILL.md symlinks at it, so the workspace gets brain-aware blocks
while the worktree stays canonical. dev-teardown removes the render.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(dev-skill): refresh the untracked brain-aware render on template change

After the default in-place regen (which keeps the worktree canonical and runs
validation), also re-render the :user variant into .claude/gstack-rendered when
it exists, so live template edits reflect at the workspace's runtime. Never
creates the render dir during plain template dev.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat(gstack-config): gbrain-refresh renders brain-aware blocks into the install

Extends gbrain-refresh to render the :user variant into the global install
(~/.claude/skills/gstack) so every project's Claude sessions get brain-aware
blocks, not just the gstack dev workspace. Guarded against mutating the wrong
directory: the target must exist, not be a symlink (a symlinked install points
at a dev worktree), and look like a real gstack clone (VERSION + package.json).
Idempotent and self-documenting. CLAUDE.md's deploy section now notes that
'git reset --hard' reverts the blocks and to re-run gbrain-refresh.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test: cover gstack-gbrain-detect --is-ok + dev-skill render refresh

Fills the two automated-coverage gaps from the eng review: --is-ok exit-code
gate (no-cli -> nonzero, healthy -> 0, plus an agrees-with-JSON no-skew check
reusing the deterministic fake-gbrain harness) and a static tripwire that
dev-skill re-renders the :user variant into the workspace render dir only when
it already exists.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v1.57.9.0)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs: document brain-aware dev-setup render for v1.57.9.0

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

bin/dev-setup

@@ -72,7 +72,48 @@ fi
 # 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.
-"$GSTACK_LINK/setup" --plan-tune-hooks=prompt </dev/null
+#
+# GSTACK_SKIP_GBRAIN_REGEN=1 is passed INLINE (not exported) so it scopes to
+# exactly this nested setup call and can't leak into any other setup path. It
+# tells setup NOT to regenerate the gbrain :user variant into the tracked
+# worktree (that would dirty checked-in source). We render it into an untracked
+# per-workspace dir below instead.
+GSTACK_SKIP_GBRAIN_REGEN=1 "$GSTACK_LINK/setup" --plan-tune-hooks=prompt </dev/null
+
+# 7. Brain-aware (gbrain) blocks — render into an untracked workspace dir.
+#
+# The worktree's SKILL.md files stay canonical (the guard above). If gbrain is
+# installed, render the :user variant (with GBRAIN_CONTEXT_LOAD +
+# GBRAIN_SAVE_RESULTS) into .claude/gstack-rendered (gitignored, per-workspace)
+# 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).
+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
+  echo ""
+  echo "gbrain detected — rendering brain-aware skills into .claude/gstack-rendered (workspace-only, untracked)..."
+  rm -rf "$RENDER_DIR"
+  if ( cd "$REPO_ROOT" && bun run gen:skill-docs:user --host claude --out-dir "$RENDER_DIR" >/dev/null 2>&1 ); then
+    # Repoint each project-local SKILL.md symlink whose worktree target has a
+    # rendered counterpart. The skill DIRECTORY name (basename of the symlink
+    # target's dir) maps to RENDER_DIR/<dir>/SKILL.md, which is robust to
+    # frontmatter renames and the gstack- prefix on the link name.
+    repointed=0
+    for skill_link in "$REPO_ROOT"/.claude/skills/*/SKILL.md; do
+      [ -L "$skill_link" ] || continue
+      target="$(readlink "$skill_link")"
+      skilldir="$(basename "$(dirname "$target")")"
+      rendered="$RENDER_DIR/$skilldir/SKILL.md"
+      if [ -f "$rendered" ]; then ln -snf "$rendered" "$skill_link"; repointed=$((repointed + 1)); fi
+    done
+    echo "  $repointed workspace skills now serve brain-aware blocks (worktree stays canonical)."
+  else
+    echo "  warning: brain-aware render failed — workspace uses canonical skills."
+  fi
+fi
 
 echo ""
 echo "Dev mode active. Skills resolve from this working tree."
@@ -80,4 +121,7 @@ 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 "  gstack-config gbrain-refresh"
+echo ""
 echo "To tear down: bin/dev-teardown"