diff --git a/bin/dev-setup b/bin/dev-setup
index a5bd48275..4ae0c2ed9 100755
--- a/bin/dev-setup
+++ b/bin/dev-setup
@@ -11,7 +11,7 @@
 #        bin/dev-teardown    # clean up
 set -e
 
-REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+REPO_ROOT="$(cd "$(dirname "$0")/.." >/dev/null && pwd)"
 
 # 1. Copy .env from main worktree (if we're a worktree and don't have one)
 if [ ! -f "$REPO_ROOT/.env" ]; then
diff --git a/bin/dev-teardown b/bin/dev-teardown
index dc8f74260..6b5b64cf6 100755
--- a/bin/dev-teardown
+++ b/bin/dev-teardown
@@ -2,7 +2,7 @@
 # Remove local dev skill symlinks. Restores global gstack as the active install.
 set -e
 
-REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+REPO_ROOT="$(cd "$(dirname "$0")/.." >/dev/null && pwd)"
 
 removed=()
 
diff --git a/bin/gstack-community-dashboard b/bin/gstack-community-dashboard
index 1f469283d..870daf846 100755
--- a/bin/gstack-community-dashboard
+++ b/bin/gstack-community-dashboard
@@ -10,7 +10,7 @@
 #   GSTACK_SUPABASE_ANON_KEY      — override Supabase anon key
 set -uo pipefail
 
-GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." && pwd)}"
+GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." >/dev/null && pwd)}"
 
 # Source Supabase config if not overridden by env
 if [ -z "${GSTACK_SUPABASE_URL:-}" ] && [ -f "$GSTACK_DIR/supabase/config.sh" ]; then
diff --git a/bin/gstack-extension b/bin/gstack-extension
index 8d0a62af9..5e3a32b67 100755
--- a/bin/gstack-extension
+++ b/bin/gstack-extension
@@ -6,7 +6,7 @@
 
 set -e
 
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 
 # Find the extension directory
diff --git a/bin/gstack-learnings-log b/bin/gstack-learnings-log
index e63c14cb2..72cd94e87 100755
--- a/bin/gstack-learnings-log
+++ b/bin/gstack-learnings-log
@@ -5,7 +5,7 @@
 # Append-only storage. Duplicates (same key+type) are resolved at read time
 # by gstack-learnings-search ("latest winner" per key+type).
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 mkdir -p "$GSTACK_HOME/projects/$SLUG"
diff --git a/bin/gstack-learnings-search b/bin/gstack-learnings-search
index 4ac187ec1..e91543446 100755
--- a/bin/gstack-learnings-search
+++ b/bin/gstack-learnings-search
@@ -6,7 +6,7 @@
 # resolves duplicates (latest winner per key+type), and outputs formatted text.
 # Exit 0 silently if no learnings file exists.
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 
diff --git a/bin/gstack-platform-detect b/bin/gstack-platform-detect
index 766a585b3..c33f5e458 100755
--- a/bin/gstack-platform-detect
+++ b/bin/gstack-platform-detect
@@ -4,7 +4,7 @@ set -euo pipefail
 # gstack-platform-detect: show which AI coding agents are installed and gstack status
 # Config-driven: reads host definitions from hosts/*.ts via host-config-export.ts
 
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 GSTACK_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
 
 printf "%-16s %-10s %-40s %s\n" "Agent" "Version" "Skill Path" "gstack"
diff --git a/bin/gstack-relink b/bin/gstack-relink
index 31e6b82f0..6602cd36e 100755
--- a/bin/gstack-relink
+++ b/bin/gstack-relink
@@ -10,7 +10,7 @@
 #   GSTACK_SKILLS_DIR  — override target skills directory
 set -euo pipefail
 
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 GSTACK_CONFIG="${SCRIPT_DIR}/gstack-config"
 
 # Detect install dir
diff --git a/bin/gstack-repo-mode b/bin/gstack-repo-mode
index 0b4d6da64..d529249f0 100755
--- a/bin/gstack-repo-mode
+++ b/bin/gstack-repo-mode
@@ -11,7 +11,7 @@
 # Cache:    ~/.gstack/projects/$SLUG/repo-mode.json (7-day TTL)
 set -euo pipefail
 
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 # Compute SLUG directly (avoid eval of gstack-slug — branch names can contain shell metacharacters)
 REMOTE_URL=$(git remote get-url origin 2>/dev/null || true)
 if [ -z "$REMOTE_URL" ]; then
diff --git a/bin/gstack-review-log b/bin/gstack-review-log
index 62c9e1719..d16e0d4c2 100755
--- a/bin/gstack-review-log
+++ b/bin/gstack-review-log
@@ -2,7 +2,7 @@
 # gstack-review-log — atomically log a review result
 # Usage: gstack-review-log '{"skill":"...","timestamp":"...","status":"..."}'
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 mkdir -p "$GSTACK_HOME/projects/$SLUG"
diff --git a/bin/gstack-review-read b/bin/gstack-review-read
index ccf1d70f6..3fe0307a1 100755
--- a/bin/gstack-review-read
+++ b/bin/gstack-review-read
@@ -2,7 +2,7 @@
 # gstack-review-read — read review log and config for dashboard
 # Usage: gstack-review-read
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 cat "$GSTACK_HOME/projects/$SLUG/$BRANCH-reviews.jsonl" 2>/dev/null || echo "NO_REVIEWS"
diff --git a/bin/gstack-specialist-stats b/bin/gstack-specialist-stats
index 3349c2b71..cec5bad59 100755
--- a/bin/gstack-specialist-stats
+++ b/bin/gstack-specialist-stats
@@ -6,7 +6,7 @@
 # and outputs hit rates. Tags specialists as GATE_CANDIDATE (0 findings in 10+
 # dispatches) or NEVER_GATE (security, data-migration — insurance policy).
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 PROJECT_DIR="$GSTACK_HOME/projects/$SLUG"
diff --git a/bin/gstack-telemetry-log b/bin/gstack-telemetry-log
index 93db82077..65786a3c4 100755
--- a/bin/gstack-telemetry-log
+++ b/bin/gstack-telemetry-log
@@ -17,7 +17,7 @@
 # NOTE: Uses set -uo pipefail (no -e) — telemetry must never exit non-zero
 set -uo pipefail
 
-GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." && pwd)}"
+GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." >/dev/null && pwd)}"
 STATE_DIR="${GSTACK_STATE_DIR:-$HOME/.gstack}"
 ANALYTICS_DIR="$STATE_DIR/analytics"
 JSONL_FILE="$ANALYTICS_DIR/skill-usage.jsonl"
diff --git a/bin/gstack-telemetry-sync b/bin/gstack-telemetry-sync
index be767c23e..3fc2bdc62 100755
--- a/bin/gstack-telemetry-sync
+++ b/bin/gstack-telemetry-sync
@@ -11,7 +11,7 @@
 #   GSTACK_SUPABASE_URL        — override Supabase project URL
 set -uo pipefail
 
-GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." && pwd)}"
+GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." >/dev/null && pwd)}"
 STATE_DIR="${GSTACK_STATE_DIR:-$HOME/.gstack}"
 ANALYTICS_DIR="$STATE_DIR/analytics"
 JSONL_FILE="$ANALYTICS_DIR/skill-usage.jsonl"
diff --git a/bin/gstack-timeline-log b/bin/gstack-timeline-log
index 0167a1d00..461242d17 100755
--- a/bin/gstack-timeline-log
+++ b/bin/gstack-timeline-log
@@ -7,7 +7,7 @@
 # Optional: branch, outcome, duration_s, session, ts.
 # Validation failure → skip silently (non-blocking).
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 mkdir -p "$GSTACK_HOME/projects/$SLUG"
diff --git a/bin/gstack-timeline-read b/bin/gstack-timeline-read
index f11d5b40e..af734e6f0 100755
--- a/bin/gstack-timeline-read
+++ b/bin/gstack-timeline-read
@@ -6,7 +6,7 @@
 # Reads ~/.gstack/projects/$SLUG/timeline.jsonl, filters, formats.
 # Exit 0 silently if no timeline file exists.
 set -euo pipefail
-SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT_DIR="$(cd "$(dirname "$0")" >/dev/null && pwd)"
 eval "$("$SCRIPT_DIR/gstack-slug" 2>/dev/null)"
 GSTACK_HOME="${GSTACK_HOME:-$HOME/.gstack}"
 
diff --git a/bin/gstack-uninstall b/bin/gstack-uninstall
index 2cf3d5288..6747db63c 100755
--- a/bin/gstack-uninstall
+++ b/bin/gstack-uninstall
@@ -36,7 +36,7 @@ if [ -z "${HOME:-}" ]; then
   exit 1
 fi
 
-GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." && pwd)}"
+GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." >/dev/null && pwd)}"
 STATE_DIR="${GSTACK_STATE_DIR:-$HOME/.gstack}"
 _GIT_ROOT="$(git rev-parse --show-toplevel 2>/dev/null || true)"
 
diff --git a/bin/gstack-update-check b/bin/gstack-update-check
index 31e9fdb6f..c9c758b26 100755
--- a/bin/gstack-update-check
+++ b/bin/gstack-update-check
@@ -12,7 +12,7 @@
 #   GSTACK_STATE_DIR    — override ~/.gstack state directory
 set -euo pipefail
 
-GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." && pwd)}"
+GSTACK_DIR="${GSTACK_DIR:-$(cd "$(dirname "$0")/.." >/dev/null && pwd)}"
 STATE_DIR="${GSTACK_STATE_DIR:-$HOME/.gstack}"
 CACHE_FILE="$STATE_DIR/last-update-check"
 MARKER_FILE="$STATE_DIR/just-upgraded-from"