diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..24cb1b2
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,39 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to a four-digit MAJOR.MINOR.PATCH.MICRO version scheme.
+
+## [0.1.0.0] - 2026-05-09
+
+### Added
+
+- **Multiple stores per user.** Run `secrets push` and `secrets pull` against any encrypted store directory you choose, not just `~/.secrets/`. Use cases: keep work secrets isolated from personal, run a separate store per client, or onboard a teammate to one project without giving them every other project's keys.
+- **`.secrets-store` file** for per-project bindings. Drop a one-line file at the project root (e.g. `echo work > .secrets-store && git add .secrets-store && git commit`) and every machine that clones the project automatically uses `~/.secrets-work/` for that repo. No env var to remember, no per-machine setup.
+- **`--store <dir>` flag** for one-shot overrides on any subcommand. `secrets --store ~/.secrets-clientA pull myapp` works without touching files. Bare names like `--store work` expand to `$HOME/.secrets-work`. `--store default` is sugar for `~/.secrets`.
+- **`secrets which`** prints the active store path and which rule chose it (flag, `.secrets-store` file, env var, or default). Aliases: `secrets where`, `secrets status`.
+- **Directed errors for teammate onboarding.** When `.secrets-store` resolves to an uninitialized store or one missing `key.txt`, the error message names both recovery paths: `git clone <remote>` to join an existing store, or `secrets --store <name> init` to start fresh.
+- **Active-store echo.** `secrets push` and `secrets pull` print `==> Store: <path> (from <source>)` whenever a non-default store is active, so wrong-store mistakes surface immediately.
+
+### Changed
+
+- `secrets list` now hints at `secrets which` when a non-default store is active.
+- `cmd_help` documents the four-rule resolution order (`--store` > `.secrets-store` file > `SECRETS_DIR` > default).
+- Error messages for missing init / missing key file are now context-aware: they distinguish between "default store on a fresh machine" and "non-default store referenced by `.secrets-store`."
+
+### Security
+
+- **Path expansion in `.secrets-store` is literal-only.** No `eval`, no `$VAR` interpolation, no `$(...)` execution. A committed `.secrets-store` containing `$(rm -rf ~)` reads as plain text, not as a command.
+- **Walk-up bounded by `$HOME`.** `secrets` never reads `$HOME/.secrets-store`, never walks past `$HOME` to `/`, and never follows symlinked `.secrets-store` files. Symlinks (potential supply-chain attack via committed link to `~/.aws/credentials` or similar) are ignored.
+- **`KEY_FILE` re-derives after `--store` switches stores.** Previously, calling `secrets pull --store other` would have decrypted ciphertext from the new store using the default store's key. Now `secrets` updates both `SECRETS_DIR` and `KEY_FILE` together inside `resolve_store()`.
+- **`secrets run` cleanup survives paths with apostrophes.** The EXIT trap is now a named function rather than a string-interpolated command, so projects at e.g. `/Users/you/Mom's Mac/code` still get plaintext cleared after the wrapped command exits.
+- **Test isolation:** the bats suite now sets `HOME=$TEST_TMPDIR` so `.secrets-store` walk-up cannot wander into the developer's real home directory.
+- **`--store` flag value validation.** Empty values (`--store=`) and flag-shaped values (`--store --workspaces`) are rejected with directed errors instead of silently mapping to `~/.secrets-`-something.
+- **Unset `HOME` is detected** with a directed error before the script tries to expand it. Helps cron, sudo without `-H`, and minimal CI runners.
+
+### Tests
+
+- 37 → 66 tests. New coverage: store resolution rules and precedence, walk-up boundaries, command-injection prevention, key-file re-derivation across stores, teammate-onboarding error path, monorepo workspace binding, F1–F5 adversarial regressions.
+
+[0.1.0.0]: https://github.com/bmajewski/secrets/releases/tag/v0.1.0.0
diff --git a/CLAUDE.md b/CLAUDE.md
index 461b633..86440b3 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -45,6 +45,19 @@ CLAUDE.md            # This file
 
 `~/.secrets/key.txt` is the age identity (private key). It is gitignored and must be copied manually to each machine once.
 
+## Multi-store resolution
+
+The active store directory is picked by `resolve_store()` using these rules, highest precedence first:
+
+1. `--store <dir>` flag (parsed in the main pre-pass into `STORE_OVERRIDE`).
+2. `.secrets-store` file in cwd or any ancestor, walk-up bounded by `$HOME` (never reads `$HOME/.secrets-store` itself or anything above).
+3. `SECRETS_DIR` env var (legacy escape hatch).
+4. `~/.secrets` default.
+
+`resolve_store` mutates BOTH `SECRETS_DIR` and `KEY_FILE` so the existing single-store code paths just work. `STORE_SOURCE` reports which rule won. `_LAST_FOUND_AT` (when rule 2 fires) holds the path of the file that was read.
+
+`.secrets-store` parsing is deliberately conservative: first non-empty non-comment line wins, no shell expansion (no `$VAR`, `$()`, backticks). Bare names map via `_expand_store_path`: `work` → `$HOME/.secrets-work`, `default` → `$HOME/.secrets`.
+
 ## Environment variable
 
-`SECRETS_DIR` overrides the default `~/.secrets` location (useful for testing).
+`SECRETS_DIR` overrides the default `~/.secrets` location (useful for testing). Per-project bindings via `.secrets-store` file beat this env var; use `--store <dir>` for one-shot overrides that beat everything.
diff --git a/README.md b/README.md
index 318ad2b..ef3a226 100644
--- a/README.md
+++ b/README.md
@@ -223,6 +223,95 @@ Stopping the dev server (or any failing command) ends the process; the `EXIT` tr
 
 If you prefer to keep decrypted files on disk for a long editing session, use `secrets pull` and `secrets clear` manually instead.
 
+### Multiple stores
+
+By default, all your encrypted secrets live in one store at `~/.secrets/`. That works great if you have one set of secrets shared across machines. If you want **separate stores** — for example, work secrets isolated from personal projects, or one store per client — `secrets` supports that without any special setup.
+
+A "store" is just a directory with its own `.git` repo, age key, and remote. You can have as many as you want.
+
+#### How a store gets picked
+
+When you run `secrets push` or `secrets pull`, the tool resolves the active store using the first matching rule (highest precedence first):
+
+```
+1. --store <dir>          flag passed on the command line
+2. .secrets-store         file in the current directory or any ancestor up to $HOME
+3. SECRETS_DIR            environment variable (legacy escape hatch)
+4. ~/.secrets             default
+```
+
+Run `secrets which` from any project directory to see which rule won and which store is active. Aliases `secrets where` and `secrets status` do the same thing.
+
+#### Set up a second store on this machine
+
+```bash
+# Create a fresh store at ~/.secrets-work with its own age key
+secrets --store work init
+
+# Connect it to a separate private GitHub repo
+cd ~/.secrets-work
+git remote add origin git@github.com:<you>/work-secrets.git
+git push -u origin main
+```
+
+The bare name `work` expands to `$HOME/.secrets-work`. Use `secrets --store /any/abs/path init` if you want a custom location.
+
+#### Bind a project to a non-default store
+
+In any project directory, write a `.secrets-store` file with the store's name (or path) and commit it:
+
+```bash
+cd ~/myapp
+echo work > .secrets-store
+git add .secrets-store
+git commit -m "use work secrets store"
+```
+
+After that, every `secrets push` / `secrets pull` from this project (or any subdirectory) automatically uses `~/.secrets-work`. Teammates who clone the project get the same binding for free — the file is in the repo.
+
+When you push or pull from a non-default store, `secrets` echoes which one is active so you can spot mistakes immediately:
+
+```
+==> Pushing secrets for project: myapp
+==> Store: /Users/you/.secrets-work (from .secrets-store file (~/myapp/.secrets-store))
+```
+
+#### Joining a teammate's bound project
+
+If you clone a project that has a committed `.secrets-store: work` file but you don't have `~/.secrets-work` set up locally, `secrets pull` will tell you exactly what to do:
+
+```
+ERROR: Store not initialized: /Users/you/.secrets-work
+  Resolved from: .secrets-store file (~/myapp/.secrets-store)
+  This path doesn't exist on this machine yet.
+
+  If you're joining a teammate's existing store:
+    git clone <their-store-remote> /Users/you/.secrets-work
+    # then copy their key.txt to /Users/you/.secrets-work/key.txt
+
+  If you want a fresh new store at this path:
+    secrets --store /Users/you/.secrets-work init
+```
+
+You'll need two things from the teammate who set it up:
+
+1. **The git remote URL** of the work-secrets repo — clone it to `~/.secrets-work` (or wherever the `.secrets-store` file resolves to on your machine).
+2. **The age key file** (`key.txt`) — same as standing up any new machine. AirDrop, scp, or USB.
+
+Once both are in place, `secrets pull` works.
+
+#### Undo or change a binding
+
+```bash
+# Stop using a non-default store for this project
+rm .secrets-store
+git commit -am "go back to default secrets store"
+
+# Or change which store the project is bound to
+echo personal > .secrets-store
+git commit -am "switch to personal secrets"
+```
+
 ### Monorepo support
 
 For projects with multiple packages (monorepos using `package.json` workspaces), add the `-w` flag to operate on all workspaces at once:
@@ -273,7 +362,7 @@ For complete rotation with no historical exposure, create a fresh `~/.secrets/`
 
 | Variable | Default | Purpose |
 |----------|---------|---------|
-| `SECRETS_DIR` | `~/.secrets` | Override the secrets store location |
+| `SECRETS_DIR` | `~/.secrets` | Override the secrets store location (legacy; prefer `--store` or a `.secrets-store` file — see "Multiple stores" above) |
 
 ## Troubleshooting
 
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..482e997
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.1.0.0
diff --git a/secrets b/secrets
index a1d92c8..82d0262 100755
--- a/secrets
+++ b/secrets
@@ -6,10 +6,27 @@ set -euo pipefail
 # secrets — encrypted env file sync between machines
 # Uses age key-file encryption + a private git repo.
 
+# F5: explicit HOME check. `set -u` would already error if HOME were unset,
+# but the message would be cryptic ("HOME: unbound variable" pointing at
+# the SECRETS_DIR default-init line). Check up front with a directed message
+# so cron/sudo/CI users know what to fix.
+: "${HOME:?HOME is not set; secrets needs a home directory to find or create the store}"
+
+# Capture the user-provided SECRETS_DIR (if any) before defaulting.
+# resolve_store() uses this to honor SECRETS_DIR as the legacy escape hatch
+# while letting .secrets-store files take precedence per project.
+_USER_SECRETS_DIR="${SECRETS_DIR:-}"
 SECRETS_DIR="${SECRETS_DIR:-$HOME/.secrets}"
 KEY_FILE="$SECRETS_DIR/key.txt"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
+# Set by resolve_store(). Reports which rule chose SECRETS_DIR.
+STORE_SOURCE="default"
+# Path to the .secrets-store file that won resolution, if any.
+_LAST_FOUND_AT=""
+# --store flag value, captured by the pre-pass.
+STORE_OVERRIDE=""
+
 # ─── Helpers ───────────────────────────────────────────────────────────
 
 die() { echo "ERROR: $*" >&2; exit 1; }
@@ -20,11 +37,37 @@ check_cmd() {
 }
 
 check_initialized() {
-  [ -d "$SECRETS_DIR/.git" ] || die "Not initialized. Run: secrets init"
+  if [ -d "$SECRETS_DIR/.git" ]; then
+    return
+  fi
+  if [ "$STORE_SOURCE" != "default" ]; then
+    die "Store not initialized: $SECRETS_DIR
+  Resolved from: $STORE_SOURCE
+  This path doesn't exist on this machine yet.
+
+  If you're joining a teammate's existing store:
+    git clone <their-store-remote> $SECRETS_DIR
+    # then copy their key.txt to $SECRETS_DIR/key.txt
+
+  If you want a fresh new store at this path:
+    secrets --store $SECRETS_DIR init"
+  fi
+  die "Not initialized. Run: secrets init"
 }
 
 check_key() {
-  [ -f "$KEY_FILE" ] || die "Key file not found at $KEY_FILE. Run: secrets init"
+  if [ -f "$KEY_FILE" ]; then
+    return
+  fi
+  if [ "$STORE_SOURCE" != "default" ]; then
+    die "Key file not found at $KEY_FILE
+  The store at $SECRETS_DIR exists but has no key.txt.
+  Resolved from: $STORE_SOURCE
+
+  If joining a teammate's store: copy their key.txt to $KEY_FILE.
+  If this is your own new store: re-run init for this store path."
+  fi
+  die "Key file not found at $KEY_FILE. Run: secrets init"
 }
 
 get_pubkey() {
@@ -48,6 +91,146 @@ derive_project_name() {
   basename "$PWD"
 }
 
+# ─── Store resolution ──────────────────────────────────────────────────
+#
+# Resolution order (highest precedence first):
+#   1. --store <dir>  flag (captured by main pre-pass into STORE_OVERRIDE)
+#   2. .secrets-store file in cwd or any ancestor up to but NOT including $HOME
+#   3. SECRETS_DIR    env var (legacy escape hatch)
+#   4. $HOME/.secrets default
+#
+# .secrets-store file format: first non-empty non-comment line is the store
+# spec. Spec is one of:
+#   - absolute path (/Users/you/.secrets-work)
+#   - ~/path        (expanded to $HOME/path)
+#   - bare name     (e.g. "work" → $HOME/.secrets-work; "default" → $HOME/.secrets)
+# Comments (#) and CRLF line endings are tolerated. NO shell expansion is
+# applied to the file content — `$VAR`, `$(...)`, and backticks are read as
+# literal characters to prevent code injection from a committed file.
+
+# Take a store spec (path or bare name) and return an absolute directory.
+_expand_store_path() {
+  local path="$1"
+  case "$path" in
+    /*)
+      echo "$path"
+      ;;
+    '~')
+      echo "$HOME"
+      ;;
+    '~/'*)
+      echo "$HOME/${path#\~/}"
+      ;;
+    .*|*/*)
+      # Relative path or path containing /. Treat as path relative to cwd.
+      echo "$path"
+      ;;
+    default)
+      # Sugar: --store default → the canonical default store
+      echo "$HOME/.secrets"
+      ;;
+    *)
+      # Bare name like "work" → $HOME/.secrets-work
+      echo "$HOME/.secrets-$path"
+      ;;
+  esac
+}
+
+# Read a .secrets-store file. Print the first non-empty non-comment line,
+# trimmed. Return 1 if no usable line is found.
+_parse_secrets_store_file() {
+  local file="$1"
+  local line
+  while IFS= read -r line || [ -n "$line" ]; do
+    # Strip CRLF
+    line="${line%$'\r'}"
+    # Trim leading whitespace
+    line="${line#"${line%%[![:space:]]*}"}"
+    # Trim trailing whitespace
+    line="${line%"${line##*[![:space:]]}"}"
+    [ -z "$line" ] && continue
+    case "$line" in '#'*) continue ;; esac
+    printf '%s\n' "$line"
+    return 0
+  done < "$file"
+  return 1
+}
+
+# Walk up from cwd looking for .secrets-store. Bounded by $HOME — never
+# walks INTO or PAST $HOME. If cwd is outside $HOME entirely (e.g. /tmp),
+# the walk does not run. Symlinks are resolved with `cd -P`.
+# On success: prints expanded store dir, sets _LAST_FOUND_AT, returns 0.
+_find_secrets_store_file() {
+  local dir
+  dir=$(pwd -P 2>/dev/null) || dir="$PWD"
+  local home_resolved
+  home_resolved=$(cd -P "$HOME" 2>/dev/null && pwd -P) || home_resolved="$HOME"
+
+  while [ -n "$dir" ] && [ "$dir" != "/" ] && [ "$dir" != "$home_resolved" ]; do
+    # Bound: only walk while we're strictly below $HOME.
+    case "$dir" in
+      "$home_resolved"/*) ;;
+      *) return 1 ;;
+    esac
+
+    # F2: never follow a symlinked .secrets-store. A committed symlink
+    # could point at any user-readable file (~/.aws/credentials, /etc/passwd)
+    # and trick the resolver into reading attacker-chosen content.
+    if [ -L "$dir/.secrets-store" ]; then
+      :
+    elif [ -f "$dir/.secrets-store" ]; then
+      local content
+      if content=$(_parse_secrets_store_file "$dir/.secrets-store"); then
+        local expanded
+        expanded=$(_expand_store_path "$content")
+        _LAST_FOUND_AT="$dir/.secrets-store"
+        printf '%s\n' "$expanded"
+        return 0
+      fi
+    fi
+    dir=$(dirname "$dir")
+  done
+  return 1
+}
+
+# Resolve the active store directory and update SECRETS_DIR + KEY_FILE.
+# Sets STORE_SOURCE to one of:
+#   "--store flag" | ".secrets-store file (<path>)" | "SECRETS_DIR env var" | "default"
+resolve_store() {
+  local resolved=""
+  local source=""
+
+  if [ -n "${STORE_OVERRIDE:-}" ]; then
+    resolved=$(_expand_store_path "$STORE_OVERRIDE")
+    source="--store flag"
+    _LAST_FOUND_AT=""
+  elif resolved=$(_find_secrets_store_file); then
+    source=".secrets-store file ($_LAST_FOUND_AT)"
+  elif [ -n "${_USER_SECRETS_DIR:-}" ]; then
+    resolved="$_USER_SECRETS_DIR"
+    source="SECRETS_DIR env var"
+    _LAST_FOUND_AT=""
+  else
+    resolved="$HOME/.secrets"
+    source="default"
+    _LAST_FOUND_AT=""
+  fi
+
+  SECRETS_DIR="$resolved"
+  KEY_FILE="$SECRETS_DIR/key.txt"
+  STORE_SOURCE="$source"
+}
+
+# Echo "==> Store: ..." when SECRETS_DIR is not the canonical default.
+# Called from cmd_push/cmd_pull (and their workspace variants) after resolution.
+echo_store_if_non_default() {
+  if [ "$SECRETS_DIR" != "$HOME/.secrets" ]; then
+    info "Store: $SECRETS_DIR (from $STORE_SOURCE)"
+  fi
+}
+
+# ─── End store resolution ──────────────────────────────────────────────
+
 # Collect secret files from a directory:
 #   .env, .env.*, .dev.vars (excluding .envrc, .environment-*)
 # Sets the COLLECTED_FILES array. Returns 1 if no files found.
@@ -117,6 +300,7 @@ HOOKEOF
 cmd_init() {
   check_cmd age
   check_cmd git
+  resolve_store
 
   if [ -d "$SECRETS_DIR/.git" ]; then
     die "Already initialized at $SECRETS_DIR. Key file preserved."
@@ -214,12 +398,14 @@ commit_and_push_secrets() {
 cmd_push() {
   check_cmd age
   check_cmd git
+  resolve_store
   check_initialized
   check_key
 
   local project
   project=$(derive_project_name "${1:-}")
   info "Pushing secrets for project: $project"
+  echo_store_if_non_default
 
   local pubkey
   pubkey=$(get_pubkey)
@@ -235,6 +421,7 @@ cmd_push_workspaces() {
   check_cmd age
   check_cmd git
   check_cmd jq
+  resolve_store
   check_initialized
   check_key
 
@@ -242,6 +429,7 @@ cmd_push_workspaces() {
   local monorepo_name
   monorepo_name=$(derive_project_name "")
   info "Pushing workspaces for monorepo: $monorepo_name"
+  echo_store_if_non_default
 
   local pubkey
   pubkey=$(get_pubkey)
@@ -274,6 +462,7 @@ cmd_push_workspaces() {
 cmd_pull() {
   check_cmd age
   check_cmd git
+  resolve_store
   check_initialized
   check_key
 
@@ -281,6 +470,7 @@ cmd_pull() {
   project=$(derive_project_name "${1:-}")
   local target_dir="$PWD"
   info "Pulling secrets for project: $project"
+  echo_store_if_non_default
 
   # Pull latest
   if git -C "$SECRETS_DIR" remote get-url origin >/dev/null 2>&1; then
@@ -344,6 +534,7 @@ cmd_pull_workspaces() {
   check_cmd age
   check_cmd git
   check_cmd jq
+  resolve_store
   check_initialized
   check_key
 
@@ -351,6 +542,7 @@ cmd_pull_workspaces() {
   local monorepo_name
   monorepo_name=$(derive_project_name "")
   info "Pulling workspaces for monorepo: $monorepo_name"
+  echo_store_if_non_default
 
   # Pull latest from remote
   if git -C "$SECRETS_DIR" remote get-url origin >/dev/null 2>&1; then
@@ -396,6 +588,7 @@ cmd_pull_workspaces() {
 }
 
 cmd_list() {
+  resolve_store
   check_initialized
 
   local found=0
@@ -416,10 +609,17 @@ cmd_list() {
   if [ "$found" -eq 0 ]; then
     echo "No projects found. Run 'secrets push <project>' to add one."
   fi
+
+  # DX-7 hint: when a non-default store is active, point users at `secrets which`.
+  if [ "$SECRETS_DIR" != "$HOME/.secrets" ]; then
+    echo ""
+    info "Showing projects in $SECRETS_DIR. Run 'secrets which' for details."
+  fi
 }
 
 cmd_rm() {
   check_cmd git
+  resolve_store
   check_initialized
 
   local project="${1:-}"
@@ -443,6 +643,7 @@ cmd_rm() {
 cmd_rekey() {
   check_cmd age
   check_cmd git
+  resolve_store
   check_initialized
   check_key
 
@@ -564,6 +765,16 @@ cmd_clear_workspaces() {
   info "Cleared $total secret file(s) from workspace"
 }
 
+# EXIT-trap helpers for cmd_run. Defined as functions (not inline string
+# traps) so $_RUN_PWD is dereferenced safely regardless of special chars
+# in the path. F1: trap "cd '$X'" breaks when X contains a single quote.
+_run_cleanup() {
+  cd -- "${_RUN_PWD:-.}" 2>/dev/null && cmd_clear
+}
+_run_cleanup_workspaces() {
+  cd -- "${_RUN_PWD:-.}" 2>/dev/null && cmd_clear_workspaces
+}
+
 cmd_run() {
   local workspace_mode=false
   local project=""
@@ -580,18 +791,26 @@ cmd_run() {
 
   [ $# -gt 0 ] || die "Usage: secrets run [-w] [--] <command...>"
 
-  # Pull secrets
+  # F8: pin the project directory now so the EXIT trap clears the right
+  # plaintext files even if the user's command does `cd` into another dir.
+  # Use a global + named function (NOT string-interpolated trap) so paths
+  # with special characters — apostrophes, dollar signs, spaces — work.
+  # Single-quoting `$_RUN_PWD` into a string trap would break on any path
+  # with a single quote (e.g. /Users/bri/it's-app), and the trap would
+  # silently fail to clean up plaintext secrets. EGB-281 F1.
+  _RUN_PWD="$PWD"
+
+  # Pull secrets (cmd_pull/cmd_pull_workspaces call resolve_store internally)
   if [ "$workspace_mode" = true ]; then
     cmd_pull_workspaces
   else
     cmd_pull "$project"
   fi
 
-  # Set trap to clear secrets on exit (normal, error, interrupt, terminate)
   if [ "$workspace_mode" = true ]; then
-    trap 'cmd_clear_workspaces' EXIT
+    trap _run_cleanup_workspaces EXIT
   else
-    trap 'cmd_clear' EXIT
+    trap _run_cleanup EXIT
   fi
 
   # Execute the command, capturing exit code (don't let set -e kill us)
@@ -600,6 +819,12 @@ cmd_run() {
   exit "$rc"
 }
 
+cmd_which() {
+  resolve_store
+  echo "store:  $SECRETS_DIR"
+  echo "source: $STORE_SOURCE"
+}
+
 cmd_help() {
   cat << 'EOF'
 secrets — encrypted secret file sync between machines
@@ -616,12 +841,28 @@ Usage:
   secrets list                  List all projects and their secret files
   secrets rm <project>          Remove a project's secrets from the repo
   secrets rekey                 Re-encrypt all secrets with a new key
+  secrets which                 Show the active store path and which rule chose it
+  secrets where                 Alias for `which`
+  secrets status                Alias for `which`
 
 Tracked files: .env, .env.*, .dev.vars
 
 If [project] is omitted, it is derived from the current directory's
 git remote (if available) or the directory name.
 
+Stores:
+  Most users have one ~/.secrets/ store. To use a separate store (e.g.
+  for work secrets vs personal), use any of these resolution rules
+  (highest precedence first):
+
+    1. --store <dir>  flag             secrets --store ~/.secrets-work pull
+    2. .secrets-store file in project  echo work > .secrets-store && git add ...
+    3. SECRETS_DIR env var (legacy)    SECRETS_DIR=~/.secrets-work secrets pull
+    4. ~/.secrets default
+
+  Bare names ("work") expand to ~/.secrets-work. The name "default"
+  resolves to ~/.secrets. Run `secrets which` to inspect the active store.
+
 Workspaces:
   With -w/--workspaces, reads package.json "workspaces" field to find
   workspace directories. Each workspace's secret files are stored under
@@ -629,12 +870,58 @@ Workspaces:
   are stored under <monorepo>/ directly. Requires jq.
 
 Environment:
-  SECRETS_DIR    Path to secrets repo (default: ~/.secrets)
+  SECRETS_DIR    Path to secrets repo (default: ~/.secrets). See also
+                 the .secrets-store file and --store flag above.
 EOF
 }
 
 # ─── Main ──────────────────────────────────────────────────────────────
 
+# Pre-pass: extract --store flag from anywhere in the args (before `--` only).
+# Lets `secrets --store work push`, `secrets push --store work`, and
+# `secrets run --store work cmd ...` all work consistently. After `--`,
+# args belong to the user's command and are passed through untouched.
+ARGS=()
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --)
+      # Stop pre-pass; pass `--` and everything after through untouched
+      # so the user's command (e.g. `secrets run -- cmd --store foo`) is
+      # not mangled.
+      ARGS+=("$@")
+      break
+      ;;
+    --store)
+      [ $# -ge 2 ] || die "--store requires a directory or store name"
+      # F3: reject values that look like another flag — almost always a typo
+      # (`secrets --store push` → user dropped the value, would silently use
+      # ~/.secrets-push and surface a confusing "not initialized" error).
+      case "$2" in
+        --|-*) die "--store value looks like a flag: $2 (did you forget the value?)" ;;
+      esac
+      STORE_OVERRIDE="$2"
+      shift 2
+      ;;
+    --store=*)
+      # F4: --store= with empty value used to silently fall through to the
+      # next rule. Treat it as a typo too.
+      [ -n "${1#--store=}" ] || die "--store= requires a value"
+      STORE_OVERRIDE="${1#--store=}"
+      shift
+      ;;
+    *)
+      ARGS+=("$1")
+      shift
+      ;;
+  esac
+done
+# Re-set positional params. Bulletproof against empty array under `set -u`.
+if [ ${#ARGS[@]} -gt 0 ]; then
+  set -- "${ARGS[@]}"
+else
+  set --
+fi
+
 case "${1:-help}" in
   init)   cmd_init ;;
   push)
@@ -665,6 +952,7 @@ case "${1:-help}" in
   list)   cmd_list ;;
   rm)     cmd_rm "${2:-}" ;;
   rekey)  cmd_rekey ;;
+  which|where|status) cmd_which ;;
   help|--help|-h) cmd_help ;;
   *)      die "Unknown command: $1. Run 'secrets help' for usage." ;;
 esac
diff --git a/test/secrets.bats b/test/secrets.bats
index 504c374..79aafef 100644
--- a/test/secrets.bats
+++ b/test/secrets.bats
@@ -519,3 +519,356 @@ EOF
   [ "$status" -eq 1 ]
   [[ "$output" == *"No secret files"* ]]
 }
+
+# ─── EGB-281: multi-store resolution ──────────────────────────────────
+
+@test "which reports default store when no overrides" {
+  unset SECRETS_DIR
+  cd "$HOME"
+  mkdir -p subdir
+  cd subdir
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets"* ]]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "which uses .secrets-store file in cwd" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-work"
+  create_bound_project_dir myapp "~/.secrets-work"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-work"* ]]
+  [[ "$output" == *".secrets-store file"* ]]
+}
+
+@test "--store flag overrides .secrets-store file and SECRETS_DIR env" {
+  export SECRETS_DIR="$HOME/.secrets-from-env"
+  create_bound_project_dir myapp "~/.secrets-from-file"
+  run "$SECRETS_BIN" --store "$HOME/.secrets-from-flag" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-from-flag"* ]]
+  [[ "$output" == *"--store flag"* ]]
+}
+
+@test "which walks up to find .secrets-store in ancestor" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-work"
+  mkdir -p "$WORK_DIR/repo/sub/deep"
+  echo "~/.secrets-work" > "$WORK_DIR/repo/.secrets-store"
+  cd "$WORK_DIR/repo/sub/deep"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-work"* ]]
+}
+
+@test "which walk-up stops at HOME boundary, does not read \$HOME/.secrets-store" {
+  unset SECRETS_DIR
+  echo "should-not-be-used" > "$HOME/.secrets-store"
+  mkdir -p "$WORK_DIR/repo"
+  cd "$WORK_DIR/repo"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" != *"should-not-be-used"* ]]
+  [[ "$output" == *"$HOME/.secrets"* ]]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "which from outside HOME falls through to default" {
+  unset SECRETS_DIR
+  cd /tmp
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets"* ]]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "empty .secrets-store falls through to next rule" {
+  unset SECRETS_DIR
+  mkdir -p "$WORK_DIR/repo"
+  cd "$WORK_DIR/repo"
+  : > .secrets-store
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "comment-only .secrets-store falls through" {
+  unset SECRETS_DIR
+  mkdir -p "$WORK_DIR/repo"
+  cd "$WORK_DIR/repo"
+  printf '# this is a comment\n   \n# another\n' > .secrets-store
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "bare name 'work' resolves to ~/.secrets-work" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-work/.git"
+  mkdir -p "$WORK_DIR/repo"
+  echo "work" > "$WORK_DIR/repo/.secrets-store"
+  cd "$WORK_DIR/repo"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-work"* ]]
+}
+
+@test "~/-prefix in .secrets-store expands to HOME" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-x"
+  mkdir -p "$WORK_DIR/repo"
+  echo "~/.secrets-x" > "$WORK_DIR/repo/.secrets-store"
+  cd "$WORK_DIR/repo"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-x"* ]]
+}
+
+@test ".secrets-store with command injection content does not execute" {
+  unset SECRETS_DIR
+  mkdir -p "$WORK_DIR/repo"
+  cd "$WORK_DIR/repo"
+  local pwn_marker="/tmp/secrets-pwn-$$"
+  rm -f "$pwn_marker"
+  echo "\$(touch $pwn_marker)" > .secrets-store
+  run "$SECRETS_BIN" which
+  [ ! -f "$pwn_marker" ]
+}
+
+@test "pull --store uses the target store's key, not the default key" {
+  unset SECRETS_DIR
+  # Set up store A (default) with its own key
+  "$SECRETS_BIN" init >/dev/null 2>&1
+  cd "$HOME/.secrets" && git remote add origin "$REMOTE_DIR" && cd -
+
+  # Set up store B at a different path, with its OWN key
+  local STORE_B="$HOME/.secrets-b"
+  "$SECRETS_BIN" --store "$STORE_B" init >/dev/null 2>&1
+
+  # Push secrets to STORE B using B's key
+  create_project_dir testproj
+  "$SECRETS_BIN" --store "$STORE_B" push testproj >/dev/null 2>&1
+
+  # Pull to a new dir using --store B (must use B's key.txt, not the default)
+  local pull_dir="$WORK_DIR/pull-target"
+  mkdir -p "$pull_dir"
+  cd "$pull_dir"
+  run "$SECRETS_BIN" --store "$STORE_B" pull testproj
+  [ "$status" -eq 0 ]
+  [ -f "$pull_dir/.env" ]
+  grep -q "SECRET_KEY=abc123" "$pull_dir/.env"
+}
+
+@test "run accepts --store flag" {
+  init_with_remote
+  create_project_dir testproj
+  "$SECRETS_BIN" push testproj >/dev/null 2>&1
+  rm "$WORK_DIR/testproj/.env" "$WORK_DIR/testproj/.env.staging"
+
+  run "$SECRETS_BIN" --store "$SECRETS_DIR" run -- cat .env
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"SECRET_KEY=abc123"* ]]
+}
+
+@test "uninitialized store referenced by .secrets-store gives directed error" {
+  unset SECRETS_DIR
+  "$SECRETS_BIN" init >/dev/null 2>&1
+  mkdir -p "$WORK_DIR/repo"
+  echo "missing-store" > "$WORK_DIR/repo/.secrets-store"
+  cd "$WORK_DIR/repo"
+
+  run "$SECRETS_BIN" pull
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"git clone"* ]]
+  [[ "$output" == *"--store"* ]]
+}
+
+@test "push -w ignores per-workspace .secrets-store, uses monorepo root binding" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-monorepo"
+  "$SECRETS_BIN" --store "$HOME/.secrets-monorepo" init >/dev/null 2>&1
+  cd "$HOME/.secrets-monorepo" && git remote add origin "$REMOTE_DIR" && \
+    git commit --allow-empty -m "init" >/dev/null 2>&1 && \
+    (git push -u origin main >/dev/null 2>&1 || git push -u origin master >/dev/null 2>&1) && \
+    cd -
+
+  local mono="$WORK_DIR/myapp"
+  mkdir -p "$mono/apps/web"
+  cat > "$mono/package.json" << 'PKG'
+{"workspaces": ["apps/*"]}
+PKG
+  echo "ROOT=top" > "$mono/.env"
+  echo "WEB=val" > "$mono/apps/web/.env"
+  echo "monorepo" > "$mono/.secrets-store"
+  echo "other-store" > "$mono/apps/web/.secrets-store"
+  git init "$mono" >/dev/null 2>&1
+  cd "$mono"
+
+  run "$SECRETS_BIN" push -w
+  [ "$status" -eq 0 ]
+  [ -f "$HOME/.secrets-monorepo/myapp/.env.age" ]
+  [ -f "$HOME/.secrets-monorepo/myapp/apps/web/.env.age" ]
+  [ ! -d "$HOME/.secrets-other-store" ]
+}
+
+@test "push echoes Store info when non-default store is active" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-work"
+  "$SECRETS_BIN" --store "$HOME/.secrets-work" init >/dev/null 2>&1
+  cd "$HOME/.secrets-work" && git remote add origin "$REMOTE_DIR" && \
+    git commit --allow-empty -m "init" >/dev/null 2>&1 && \
+    (git push -u origin main >/dev/null 2>&1 || git push -u origin master >/dev/null 2>&1) && \
+    cd -
+
+  create_project_dir myapp
+  run "$SECRETS_BIN" --store "$HOME/.secrets-work" push myapp
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"Store: $HOME/.secrets-work"* ]]
+}
+
+# ─── EGB-281: gap-filler tests (auto-decided during /ship coverage audit) ─
+
+@test "--store with missing argument errors out" {
+  run "$SECRETS_BIN" --store
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"--store requires"* ]]
+}
+
+@test "--store=value (equals form) is accepted" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-equals"
+  cd "$HOME"
+  run "$SECRETS_BIN" --store="$HOME/.secrets-equals" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-equals"* ]]
+}
+
+@test "where and status are aliases of which" {
+  unset SECRETS_DIR
+  cd "$HOME"
+  mkdir -p subdir
+  cd subdir
+  run "$SECRETS_BIN" where
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"source:"* ]]
+
+  run "$SECRETS_BIN" status
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"source:"* ]]
+}
+
+@test "--store default sugar resolves to ~/.secrets" {
+  unset SECRETS_DIR
+  cd "$HOME"
+  run "$SECRETS_BIN" --store default which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets"* ]]
+}
+
+@test "missing key.txt in non-default store gives directed error" {
+  unset SECRETS_DIR
+  # Make a "store" directory with .git but no key.txt — simulates a teammate
+  # who cloned the remote but hasn't received the key yet.
+  local STORE_NOKEY="$HOME/.secrets-nokey"
+  mkdir -p "$STORE_NOKEY"
+  git init "$STORE_NOKEY" >/dev/null 2>&1
+  mkdir -p "$WORK_DIR/proj"
+  echo "nokey" > "$WORK_DIR/proj/.secrets-store"
+  echo "VAL=x" > "$WORK_DIR/proj/.env"
+  cd "$WORK_DIR/proj"
+
+  run "$SECRETS_BIN" push myapp
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"key.txt"* ]]
+  [[ "$output" == *"teammate"* ]]
+}
+
+@test "CRLF line endings in .secrets-store are tolerated" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-crlf"
+  mkdir -p "$WORK_DIR/proj"
+  printf '~/.secrets-crlf\r\n' > "$WORK_DIR/proj/.secrets-store"
+  cd "$WORK_DIR/proj"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"$HOME/.secrets-crlf"* ]]
+}
+
+@test "list hints at 'secrets which' when non-default store is active" {
+  unset SECRETS_DIR
+  mkdir -p "$HOME/.secrets-x"
+  "$SECRETS_BIN" --store "$HOME/.secrets-x" init >/dev/null 2>&1
+
+  run "$SECRETS_BIN" --store "$HOME/.secrets-x" list
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"secrets which"* ]]
+}
+
+# ─── EGB-281: adversarial-review regression tests (F1-F5) ─────────────
+
+@test "F1: cmd_run cleans up plaintext when project path contains apostrophe" {
+  init_with_remote
+  # Project dir whose name contains a single quote — string-interpolated trap
+  # form would close its quoting early on this path and silently fail to clean up.
+  local QUOTED_DIR="$WORK_DIR/dont-leak'apostrophe-test"
+  mkdir -p "$QUOTED_DIR"
+  echo "SECRET_KEY=should-not-leak" > "$QUOTED_DIR/.env"
+  cd "$QUOTED_DIR"
+  # Push with the auto-derived project name (matches the dir name, including the ')
+  "$SECRETS_BIN" push >/dev/null 2>&1
+  rm "$QUOTED_DIR/.env"
+
+  # Run a command, then verify .env is cleared by the EXIT trap
+  run "$SECRETS_BIN" run -- cat .env
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"should-not-leak"* ]]
+  # CRITICAL: the trap must have cleaned up — .env must NOT exist on disk.
+  # If F1 regressed (string-interpolated trap), the file would still be here.
+  [ ! -f "$QUOTED_DIR/.env" ]
+}
+
+@test "F2: symlinked .secrets-store is skipped, not followed" {
+  unset SECRETS_DIR
+  # Create a sensitive-looking target outside the project
+  local TARGET="$HOME/.secret-target"
+  echo "/etc/passwd" > "$TARGET"
+  mkdir -p "$WORK_DIR/proj"
+  ln -s "$TARGET" "$WORK_DIR/proj/.secrets-store"
+  cd "$WORK_DIR/proj"
+  run "$SECRETS_BIN" which
+  [ "$status" -eq 0 ]
+  # The symlink should be ignored, falling through to default
+  [[ "$output" != *"/etc/passwd"* ]]
+  [[ "$output" == *"$HOME/.secrets"* ]]
+  [[ "$output" == *"source: default"* ]]
+}
+
+@test "F3: --store rejects flag-shaped value" {
+  run "$SECRETS_BIN" --store --workspaces which
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"looks like a flag"* ]]
+}
+
+@test "F3: --store rejects literal --" {
+  run "$SECRETS_BIN" --store -- which
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"looks like a flag"* ]]
+}
+
+@test "F4: --store= empty value is rejected" {
+  run "$SECRETS_BIN" --store= which
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"requires a value"* ]]
+}
+
+@test "F5: HOME unset gives directed error" {
+  # Capture current HOME so we can restore for teardown
+  local SAVED_HOME="$HOME"
+  unset HOME
+  run "$SECRETS_BIN" which
+  export HOME="$SAVED_HOME"   # restore before assertions in case bats relies on it
+  [ "$status" -ne 0 ]
+  [[ "$output" == *"HOME"* ]]
+}
diff --git a/test/test_helper.bash b/test/test_helper.bash
index 4da4265..1470caf 100644
--- a/test/test_helper.bash
+++ b/test/test_helper.bash
@@ -14,11 +14,18 @@ setup() {
   export TEST_TMPDIR
   TEST_TMPDIR=$(mktemp -d)
 
+  # Isolate HOME so .secrets-store walk-up cannot stray into the real
+  # developer's home directory (or pick up files in / if HOME happens to
+  # not be a real ancestor of /tmp). EGB-281 F9.
+  export HOME="$TEST_TMPDIR"
+
   # Secrets repo lives in temp
   export SECRETS_DIR="$TEST_TMPDIR/secrets-repo"
 
-  # Working directory for simulating project dirs
-  export WORK_DIR="$TEST_TMPDIR/work"
+  # Working directory for simulating project dirs (kept under $HOME so
+  # the .secrets-store walk-up logic, which is bounded by $HOME, can find
+  # files placed in test fixtures).
+  export WORK_DIR="$HOME/work"
   mkdir -p "$WORK_DIR"
 
   # Create a bare "remote" repo for push/pull testing
@@ -50,3 +57,14 @@ create_project_dir() {
   echo "DB_HOST=staging.db.example.com" > "$dir/.env.staging"
   cd "$dir"
 }
+
+# Helper: create a project dir bound to a store via .secrets-store file
+create_bound_project_dir() {
+  local name="$1"
+  local store_value="$2"
+  local dir="$WORK_DIR/$name"
+  mkdir -p "$dir"
+  echo "SECRET_KEY=abc123" > "$dir/.env"
+  echo "$store_value" > "$dir/.secrets-store"
+  cd "$dir"
+}