feat: auto-init stackmemory on wrapper launch, remove dead feature flags

- Add ensureInitialized() to claude-sm, codex-sm, opencode-sm to auto-run
  `stackmemory init` if no context.db exists in the repo
- Remove greptile and remote feature flags (unused)
- Add initialInput support to pty-wrapper with bracketed paste injection
- Fix onboard.ts init command (remove unsupported --silent flag)
- Add test:smoke-db script

Author: StackMemory Bot (CLI)

package.json

@@ -94,6 +94,7 @@
     "sync:setup": "./scripts/setup-background-sync.sh",
     "prepare": "echo 'Prepare step completed'",
     "verify:dist": "node scripts/verify-dist.cjs",
+    "test:smoke-db": "bash scripts/smoke-init-db.sh",
     "rebuild:native": "npm rebuild better-sqlite3 || true",
     "deps:reset": "rm -rf node_modules package-lock.json && npm ci"
   },

scripts/smoke-init-db.sh

@@ -0,0 +1,77 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Smoke test: verify wrappers auto-init StackMemory and create context.db
+#
+# Steps:
+#  - Create a fresh git repo
+#  - Prepend a PATH shim so "stackmemory" resolves to local dist CLI
+#  - Run each wrapper with flags to avoid external tool execution
+#  - Assert .stackmemory/context.db is created (DB enabled)
+#
+# Notes:
+#  - Requires that better-sqlite3 can load on this system.
+#  - Unsets env that disables DB in CLI (STACKMEMORY_TEST_SKIP_DB).
+
+WS_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+DIST_CLI="$WS_ROOT/dist/src/cli/index.js"
+if [[ ! -f "$DIST_CLI" ]]; then
+  echo "dist CLI not found at $DIST_CLI; run: npm run build" >&2
+  exit 1
+fi
+
+TEST_ROOT="$WS_ROOT/tmp/smoke-db-$(date +%s)"
+SM_BIN_DIR="$TEST_ROOT/bin"
+mkdir -p "$SM_BIN_DIR" "$TEST_ROOT"
+
+# PATH shim for stackmemory -> local dist CLI
+cat > "$SM_BIN_DIR/stackmemory" <<EOS
+#!/usr/bin/env bash
+exec node "$DIST_CLI" "$@"
+EOS
+chmod +x "$SM_BIN_DIR/stackmemory"
+
+# Fresh git repo
+mkdir -p "$TEST_ROOT/repo"
+cd "$TEST_ROOT/repo"
+git init -q
+echo "# Smoke Test Repo" > README.md
+git add README.md
+git -c user.email=test@example.com -c user.name=test commit -q -m "init"
+
+# PATH and env (ensure DB path is taken)
+export PATH="$SM_BIN_DIR:$PATH"
+unset STACKMEMORY_TEST_SKIP_DB || true
+unset VITEST || true
+unset NODE_ENV || true
+
+failures=0
+
+run_case() {
+  local name="$1"; shift
+  local cmd=("$@")
+  rm -rf .stackmemory
+  set +e
+  ( "${cmd[@]}" ) >/dev/null 2>&1
+  local rc=$?
+  set -e
+  if [[ -f .stackmemory/context.db ]]; then
+    echo "$name: DB_OK (rc=$rc)"
+  else
+    echo "$name: DB_MISSING (rc=$rc)"; failures=$((failures+1))
+  fi
+}
+
+# Run wrappers to trigger auto-init
+run_case codex-sm    "$WS_ROOT/bin/codex-sm"    --no-context --no-trace --codex-bin /bin/false
+run_case opencode-sm "$WS_ROOT/bin/opencode-sm" --no-context --no-trace --opencode-bin /bin/false
+run_case claude-sm   "$WS_ROOT/bin/claude-sm"   --no-context --no-trace --claude-bin /bin/false
+
+if [[ $failures -eq 0 ]]; then
+  echo "ALL_DB_OK"
+  exit 0
+else
+  echo "FAILURES=$failures"
+  exit 1
+fi
+