fix(security): guard brain-sync arithmetic against injected .brain-last-pull content; sanitize _GBRAIN_HOST

The generated preamble bash fed the raw file content of
~/.gstack/.brain-last-pull into $(( )) — bash arithmetic evaluates array
subscripts and command substitution, so a writable state file is an
execution vector. It also interpolated the gbrain host string into the
trusted status line unsanitized. Both are now normalized: .brain-last-pull
content is reset to 0 unless purely numeric, and the host is clamped to a
single line of hostname-safe characters.

Regenerated all host outputs + re-blessed ship goldens.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

SKILL.md

@@ -401,6 +401,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -414,7 +415,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

autoplan/SKILL.md

@@ -536,6 +536,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -549,7 +550,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

benchmark-models/SKILL.md

@@ -405,6 +405,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -418,7 +419,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

benchmark/SKILL.md

@@ -405,6 +405,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -418,7 +419,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

browse/SKILL.md

@@ -403,6 +403,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -416,7 +417,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

canary/SKILL.md

@@ -528,6 +528,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -541,7 +542,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

codex/SKILL.md

@@ -531,6 +531,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -544,7 +545,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

context-restore/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

context-save/SKILL.md

@@ -531,6 +531,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -544,7 +545,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

cso/SKILL.md

@@ -534,6 +534,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -547,7 +548,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

design-consultation/SKILL.md

@@ -554,6 +554,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -567,7 +568,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

design-html/SKILL.md

@@ -535,6 +535,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -548,7 +549,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

design-review/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

design-shotgun/SKILL.md

@@ -549,6 +549,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -562,7 +563,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

devex-review/SKILL.md

@@ -534,6 +534,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -547,7 +548,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

diagram/SKILL.md

@@ -404,6 +404,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -417,7 +418,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

document-generate/SKILL.md

@@ -534,6 +534,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -547,7 +548,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

document-release/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

health/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

investigate/SKILL.md

@@ -569,6 +569,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -582,7 +583,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ios-clean/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ios-design-review/SKILL.md

@@ -534,6 +534,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -547,7 +548,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ios-fix/SKILL.md

@@ -535,6 +535,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -548,7 +549,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ios-qa/SKILL.md

@@ -538,6 +538,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -551,7 +552,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ios-sync/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

land-and-deploy/SKILL.md

@@ -527,6 +527,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -540,7 +541,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

landing-report/SKILL.md

@@ -529,6 +529,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -542,7 +543,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

learn/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

make-pdf/SKILL.md

@@ -440,6 +440,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -453,7 +454,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

office-hours/SKILL.md

@@ -565,6 +565,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -578,7 +579,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

open-gstack-browser/SKILL.md

@@ -403,6 +403,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -416,7 +417,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

pair-agent/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

plan-ceo-review/SKILL.md

@@ -559,6 +559,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -572,7 +573,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

plan-design-review/SKILL.md

@@ -531,6 +531,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -544,7 +545,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

plan-devex-review/SKILL.md

@@ -537,6 +537,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -550,7 +551,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

plan-eng-review/SKILL.md

@@ -535,6 +535,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -548,7 +549,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

plan-tune/SKILL.md

@@ -540,6 +540,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -553,7 +554,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

qa-only/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

qa/SKILL.md

@@ -536,6 +536,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -549,7 +550,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

retro/SKILL.md

@@ -547,6 +547,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -560,7 +561,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

review/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

scrape/SKILL.md

@@ -404,6 +404,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -417,7 +418,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

scripts/resolvers/preamble/generate-brain-sync-block.ts

@@ -103,6 +103,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -116,7 +117,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server \${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

setup-browser-cookies/SKILL.md

@@ -399,6 +399,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -412,7 +413,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

setup-deploy/SKILL.md

@@ -531,6 +531,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -544,7 +545,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

setup-gbrain/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

ship/SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

skillify/SKILL.md

@@ -529,6 +529,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -542,7 +543,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

spec/SKILL.md

@@ -530,6 +530,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -543,7 +544,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

sync-gbrain/SKILL.md

@@ -531,6 +531,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -544,7 +545,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

test/fixtures/golden/claude-ship-SKILL.md

@@ -532,6 +532,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -545,7 +546,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

test/fixtures/golden/codex-ship-SKILL.md

@@ -518,6 +518,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -531,7 +532,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0

test/fixtures/golden/factory-ship-SKILL.md

@@ -520,6 +520,7 @@ if [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_DO_PULL=1
   if [ -f "$_BRAIN_LAST_PULL_FILE" ]; then
     _BRAIN_LAST=$(cat "$_BRAIN_LAST_PULL_FILE" 2>/dev/null || echo 0)
+    case "$_BRAIN_LAST" in ''|*[!0-9]*) _BRAIN_LAST=0 ;; esac
     _BRAIN_AGE=$(( _BRAIN_NOW - _BRAIN_LAST ))
     [ "$_BRAIN_AGE" -lt 86400 ] && _BRAIN_DO_PULL=0
   fi
@@ -533,7 +534,7 @@ fi
 if [ "$_GBRAIN_MCP_MODE" = "remote-http" ]; then
   # Remote-MCP mode: local artifacts sync is a no-op (brain admin's server
   # pulls from GitHub/GitLab). Show the user this is by design, not broken.
-  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|')
+  _GBRAIN_HOST=$(jq -r '.mcpServers.gbrain.url // empty' "$HOME/.claude.json" 2>/dev/null | sed -E 's|^https?://([^/:]+).*|\1|' | head -1 | tr -cd 'A-Za-z0-9._-')
   echo "ARTIFACTS_SYNC: remote-mode (managed by brain server ${_GBRAIN_HOST:-remote})"
 elif [ -d "$_GSTACK_HOME/.git" ] && [ "$_BRAIN_SYNC_MODE" != "off" ]; then
   _BRAIN_QUEUE_DEPTH=0