fix(capabilities): check shell and tool requirements

scripts/check-capabilities.sh

@@ -1,15 +1,6 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-skip_external=false
-while [ $# -gt 0 ]; do
-  case "$1" in
-    --skip-external) skip_external=true; shift ;;
-    *) printf 'Unknown argument: %s\n' "$1" >&2; exit 2 ;;
-  esac
-done
-
-root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)
 failed=false
 pass() { printf 'PASS %s\n' "$1"; }
 fail() { printf 'FAIL %s\n' "$1" >&2; failed=true; }
@@ -25,7 +16,7 @@ check_version() {
 }
 
 check_version Bash "${BASH_VERSINFO[0]}.${BASH_VERSINFO[1]}" 4.3
-require_command awk; require_command sed; require_command sha256sum; require_command git; require_command jq
+require_command awk; require_command sed; require_command sha256sum; require_command jq
 require_command python3
 if command -v python3 >/dev/null 2>&1 && python3 -c 'import sys; raise SystemExit(sys.version_info < (3, 11))' >/dev/null 2>&1; then
   pass "Python $(python3 --version 2>&1 | awk '{print $2}') (minimum 3.11)"
@@ -33,23 +24,5 @@ else
   fail 'Python 3.11 or newer is required'
 fi
 
-for path in AI-Instructions.md shared/rules shared/skills shared/agents adapters scripts/build.sh scripts/build.ps1 scripts/install.sh scripts/install.ps1 scripts/update.sh scripts/update.ps1 scripts/validate-config.py; do
-  [ -e "$root/$path" ] && pass "repository path $path" || fail "repository path is missing: $path"
-done
-
-if [ "$skip_external" = false ]; then
-  for client in codex claude; do
-    if command -v "$client" >/dev/null 2>&1 && "$client" --version >/dev/null 2>&1; then pass "$client CLI available"; else fail "$client CLI is required for the default setup"; fi
-  done
-  remote=$(git -C "$root" config --get remote.origin.url 2>/dev/null || true)
-  if [ -z "$remote" ]; then
-    fail 'Git origin remote is required for network capability checks'
-  elif git -c http.lowSpeedLimit=1 -c http.lowSpeedTime=10 -C "$root" ls-remote --heads "$remote" >/dev/null 2>&1; then
-    pass 'network access to the Git origin'
-  else
-    fail 'network access to Git origin failed'
-  fi
-fi
-
 if [ "$failed" = true ]; then printf 'Capability check: FAIL\n' >&2; exit 1; fi
 printf 'Capability check: PASS\n'