diff --git a/.githooks/pre-push b/.githooks/pre-push
new file mode 100755
index 0000000..d0f7273
--- /dev/null
+++ b/.githooks/pre-push
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+#
+# pre-push hook -- block a push that CI would reject.
+#
+# Runs the fast, no-compile gates (formatting + supply-chain audit) that have
+# historically slipped through to CI. These are cheap (no project build), so
+# they are safe to run on every push. Heavier gates (clippy, test) are NOT run
+# here to avoid rebuilding on every push; run `scripts/preflight.sh` for the
+# full local CI mirror before opening or updating a PR.
+#
+# Enable once per clone:
+#   git config core.hooksPath .githooks
+#
+# Bypass in an emergency (use sparingly, you own the CI result):
+#   git push --no-verify
+
+set -euo pipefail
+
+repo_root="$(git rev-parse --show-toplevel)"
+preflight="$repo_root/scripts/preflight.sh"
+
+if [[ ! -x "$preflight" ]]; then
+    echo "pre-push: scripts/preflight.sh missing or not executable; skipping gate" >&2
+    exit 0
+fi
+
+echo "pre-push: running fast preflight (fmt + audit) ..."
+if ! "$preflight" --fast; then
+    echo "" >&2
+    echo "pre-push: BLOCKED -- fix the above before pushing (CI would fail)." >&2
+    echo "          run 'scripts/preflight.sh' for the full check, or" >&2
+    echo "          'git push --no-verify' to bypass (you own the CI result)." >&2
+    exit 1
+fi
+
+exit 0
diff --git a/scripts/preflight.sh b/scripts/preflight.sh
new file mode 100755
index 0000000..9935bef
--- /dev/null
+++ b/scripts/preflight.sh
@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+#
+# preflight.sh -- run the same gates CI runs, locally, before you push.
+#
+# Mirrors .github/workflows/ci.yml so a green preflight means a green CI (minus
+# the Postgres-integration and mirror jobs, which need Docker / the remote and
+# are not reproduced here). Run this before opening or updating a PR.
+#
+# Usage:
+#   scripts/preflight.sh           # fmt + clippy + test + audit
+#   scripts/preflight.sh --fast    # fmt + audit only (no compile; what the
+#                                   # pre-push hook runs)
+#
+# Exits nonzero on the first failing gate.
+
+set -euo pipefail
+
+cd "$(git rev-parse --show-toplevel)"
+
+# The advisories CI ignores. Keep this in sync with the `ignore:` field in
+# .github/workflows/ci.yml (see that file for the full justification of each):
+#   RUSTSEC-2024-0370  proc-macro-error unmaintained (build-time only, age -> i18n-embed-fl)
+#   RUSTSEC-2026-0194  quick-xml < 0.41 quadratic duplicate-attribute check (object_store -> R2, trusted XML)
+#   RUSTSEC-2026-0195  quick-xml < 0.41 unbounded namespace allocation (same path)
+AUDIT_IGNORE=(RUSTSEC-2024-0370 RUSTSEC-2026-0194 RUSTSEC-2026-0195)
+
+fast_only=0
+if [[ "${1:-}" == "--fast" ]]; then
+    fast_only=1
+fi
+
+step() { printf '\n\033[1;36m== %s ==\033[0m\n' "$1"; }
+ok() { printf '\033[1;32m   ok: %s\033[0m\n' "$1"; }
+fail() { printf '\033[1;31m   FAIL: %s\033[0m\n' "$1" >&2; exit 1; }
+
+# 1. Formatting (instant, no compile). The most common CI failure.
+step "cargo fmt --all -- --check"
+cargo fmt --all -- --check || fail "rustfmt: run 'cargo fmt --all' to fix"
+ok "formatting"
+
+# 2. Supply-chain advisories (fast, reads Cargo.lock; no project compile).
+step "cargo audit"
+if command -v cargo-audit >/dev/null 2>&1; then
+    audit_args=()
+    for adv in "${AUDIT_IGNORE[@]}"; do audit_args+=(--ignore "$adv"); done
+    cargo audit "${audit_args[@]}" || fail "cargo audit found advisories"
+    ok "audit"
+else
+    printf '\033[1;33m   SKIP: cargo-audit not installed (cargo install cargo-audit)\033[0m\n'
+fi
+
+if [[ "$fast_only" == "1" ]]; then
+    step "fast preflight complete"
+    ok "fmt + audit clean -- safe to push (clippy/test not run in --fast mode)"
+    exit 0
+fi
+
+# 3. Lints (compiles; matches CI's clippy job).
+step "cargo clippy --workspace --all-targets -- -D warnings"
+cargo clippy --workspace --all-targets -- -D warnings || fail "clippy"
+ok "clippy"
+
+# 4. Tests (compiles; matches CI's plain test job, Docker-gated tests skipped).
+step "cargo test --workspace"
+cargo test --workspace || fail "tests"
+ok "tests"
+
+step "preflight complete"
+ok "all gates green -- safe to push"