chore: merge origin/main, resolve VERSION + CHANGELOG conflicts

Bump to v0.15.13.0 (above main's 0.15.12.0). Resolve preamble.ts
conflicts (keep both vendoring detection and spawned session check).
Regenerate all SKILL.md files from resolved sources.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

review/SKILL.md

@@ -93,6 +93,8 @@ if [ -d ".claude/skills/gstack" ] && [ ! -L ".claude/skills/gstack" ]; then
   fi
 fi
 echo "VENDORED_GSTACK: $_VENDORED"
+# Detect spawned session (OpenClaw or other orchestrator)
+[ -n "$OPENCLAW_SESSION" ] && echo "SPAWNED_SESSION: true" || true
 ```
 
 If `PROACTIVE` is `"false"`, do not proactively suggest gstack skills AND do not
@@ -251,6 +253,13 @@ touch ~/.gstack/.vendoring-warned-${SLUG:-unknown}
 
 This only happens once per project. If the marker file exists, skip entirely.
 
+If `SPAWNED_SESSION` is `"true"`, you are running inside a session spawned by an
+AI orchestrator (e.g., OpenClaw). In spawned sessions:
+- Do NOT use AskUserQuestion for interactive prompts. Auto-choose the recommended option.
+- Do NOT run upgrade checks, telemetry prompts, routing injection, or lake intro.
+- Focus on completing the task and reporting results via prose output.
+- End with a completion report: what shipped, decisions made, anything uncertain.
+
 ## Voice
 
 You are GStack, an open source AI builder framework shaped by Garry Tan's product, startup, and engineering judgment. Encode how he thinks, not his biography.
@@ -932,7 +941,9 @@ STACK=""
 [ -f go.mod ] && STACK="${STACK}go "
 [ -f Cargo.toml ] && STACK="${STACK}rust "
 echo "STACK: ${STACK:-unknown}"
-DIFF_LINES=$(git diff origin/<base> --stat | tail -1 | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+' || echo "0")
+DIFF_INS=$(git diff origin/<base> --stat | tail -1 | grep -oE '[0-9]+ insertion' | grep -oE '[0-9]+' || echo "0")
+DIFF_DEL=$(git diff origin/<base> --stat | tail -1 | grep -oE '[0-9]+ deletion' | grep -oE '[0-9]+' || echo "0")
+DIFF_LINES=$((DIFF_INS + DIFF_DEL))
 echo "DIFF_LINES: $DIFF_LINES"
 # Detect test framework for specialist test stub generation
 TEST_FW=""

review/SKILL.md.tmpl

@@ -103,39 +103,7 @@ Follow the output format specified in the checklist. Respect the suppressions
 
 **Every finding gets action — not just critical ones.**
 
-### Step 5.0: Cross-review finding dedup
-
-Before classifying findings, check if any were previously skipped by the user in a prior review on this branch.
-
-```bash
-~/.claude/skills/gstack/bin/gstack-review-read
-```
-
-Parse the output: only lines BEFORE `---CONFIG---` are JSONL entries (the output also contains `---CONFIG---` and `---HEAD---` footer sections that are not JSONL — ignore those).
-
-For each JSONL entry that has a `findings` array:
-1. Collect all fingerprints where `action: "skipped"`
-2. Note the `commit` field from that entry
-
-If skipped fingerprints exist, get the list of files changed since that review:
-
-```bash
-git diff --name-only <prior-review-commit> HEAD
-```
-
-For each current finding (from both Step 4 critical pass and Step 4.5-4.6 specialists), check:
-- Does its fingerprint match a previously skipped finding?
-- Is the finding's file path NOT in the changed-files set?
-
-If both conditions are true: suppress the finding. It was intentionally skipped and the relevant code hasn't changed.
-
-Print: "Suppressed N findings from prior reviews (previously skipped by user)"
-
-**Only suppress `skipped` findings — never `fixed` or `auto-fixed`** (those might regress and should be re-checked).
-
-If no prior reviews exist or none have a `findings` array, skip this step silently.
-
-Output a summary header: `Pre-Landing Review: N issues (X critical, Y informational)`
+{{CROSS_REVIEW_DEDUP}}
 
 ### Step 5a: Classify each finding