Merge pull request #1231 from MemPalace/fix/hooks-convos-additive-mining

fix(hooks): always mine the active transcript as convos, additive to MEMPAL_DIR

README.md

@@ -149,6 +149,10 @@ system prompt:
 Two Claude Code hooks save periodically and before context compression:
 [mempalaceofficial.com/guide/hooks](https://mempalaceofficial.com/guide/hooks.html).
 
+For per-message recall on top of the file-level chunks the hooks produce,
+run `mempalace sweep <transcript-dir>` periodically — it stores one
+verbatim drawer per user/assistant message, idempotent and resume-safe.
+
 ---
 
 ## Requirements

hooks/README.md

@@ -67,7 +67,7 @@ Edit `mempal_save_hook.sh` to change:
 
 - **`SAVE_INTERVAL=15`** — How many human messages between saves. Lower = more frequent saves, higher = less interruption.
 - **`STATE_DIR`** — Where hook state is stored (defaults to `~/.mempalace/hook_state/`)
-- **`MEMPAL_DIR`** — Optional. Set to a conversations directory to auto-run `mempalace mine <dir>` on each save trigger. Leave blank (default) to let the AI handle saving via the block reason message.
+- **`MEMPAL_DIR`** — Optional **project directory** (code, notes, docs) to also mine on each save trigger, with `--mode projects`. The hook ALWAYS mines the active conversation transcript automatically with `--mode convos` — `MEMPAL_DIR` is purely additive, never an override. Leave blank if you don't want to ingest project files.
 - **`MEMPALACE_PYTHON`** — Optional env var. Python interpreter with mempalace + chromadb installed. Auto-detects: `MEMPALACE_PYTHON` env var → repo `venv/bin/python3` → system `python3`. Set this if your venv is in a non-standard location.
 
 ### mempalace CLI

hooks/mempal_precompact_hook.sh

@@ -41,17 +41,18 @@
 # to save everything. After the AI saves, compaction proceeds normally.
 #
 # === MEMPALACE CLI ===
-# This repo uses: mempalace mine <dir>
-# or:            mempalace mine <dir> --mode convos
-# Set MEMPAL_DIR below if you want the hook to auto-ingest before compaction.
-# Leave blank to rely on the AI's own save instructions.
+# The hook ALWAYS mines the active conversation transcript synchronously
+# before compaction (via `mempalace mine <transcript-dir> --mode convos`).
+# MEMPAL_DIR is an *additional*, optional target for project files — it
+# does not replace the conversation mine.
 
 STATE_DIR="$HOME/.mempalace/hook_state"
 mkdir -p "$STATE_DIR"
 
-# Optional: set to the directory you want auto-ingested before compaction.
-# Example: MEMPAL_DIR="$HOME/conversations"
-# Leave empty to skip auto-ingest (AI handles saving via the block reason).
+# Optional: project directory (code / notes / docs) to also mine before
+# compaction. Mined with `--mode projects`. The conversation transcript
+# is always mined regardless — this is purely additive.
+# Example: MEMPAL_DIR="$HOME/projects/my_app"
 MEMPAL_DIR=""
 
 # Resolve the Python interpreter. Same contract as mempal_save_hook.sh:
@@ -64,15 +65,57 @@ fi
 # Read JSON input from stdin
 INPUT=$(cat)
 
-SESSION_ID=$(echo "$INPUT" | "$MEMPAL_PYTHON_BIN" -c "import sys,json; print(json.load(sys.stdin).get('session_id','unknown'))" 2>/dev/null)
+# Parse session_id and transcript_path in one call. Sanitize both, then
+# read sanitized values from one-per-line stdout into shell variables —
+# avoids ``eval`` on generated code (#1231 review). Same contract as
+# mempal_save_hook.sh.
+mapfile -t _mempal_parsed < <(echo "$INPUT" | "$MEMPAL_PYTHON_BIN" -c "
+import sys, json, re
+data = json.load(sys.stdin)
+sid = data.get('session_id', 'unknown')
+tp = data.get('transcript_path', '')
+safe = lambda s: re.sub(r'[^a-zA-Z0-9_/.\-~]', '', str(s))
+print(safe(sid))
+print(safe(tp))
+" 2>/dev/null)
+SESSION_ID="${_mempal_parsed[0]:-unknown}"
+TRANSCRIPT_PATH="${_mempal_parsed[1]:-}"
+
+# Expand ~ in path
+TRANSCRIPT_PATH="${TRANSCRIPT_PATH/#\~/$HOME}"
+
+# Validate that TRANSCRIPT_PATH looks like a transcript file. Mirrors
+# mempalace.hooks_cli._validate_transcript_path so the shell hook
+# rejects the same shapes the Python hook rejects (#1231 review).
+is_valid_transcript_path() {
+    local path="$1"
+    [ -n "$path" ] || return 1
+    case "$path" in
+        *.json|*.jsonl) ;;
+        *) return 1 ;;
+    esac
+    case "/$path/" in
+        */../*) return 1 ;;
+    esac
+    return 0
+}
 
 echo "[$(date '+%H:%M:%S')] PRE-COMPACT triggered for session $SESSION_ID" >> "$STATE_DIR/hook.log"
 
-# Optional: run mempalace ingest synchronously so memories land before compaction
+# Run ingest synchronously so memories land before compaction. Two
+# independent targets — both run if both are set:
+#   1. TRANSCRIPT_PATH (from Claude Code) → parent dir, --mode convos
+#   2. MEMPAL_DIR → --mode projects
+if is_valid_transcript_path "$TRANSCRIPT_PATH" && [ -f "$TRANSCRIPT_PATH" ]; then
+    mempalace mine "$(dirname "$TRANSCRIPT_PATH")" --mode convos \
+        >> "$STATE_DIR/hook.log" 2>&1
+elif [ -n "$TRANSCRIPT_PATH" ]; then
+    echo "[$(date '+%H:%M:%S')] Skipping invalid transcript path: $TRANSCRIPT_PATH" \
+        >> "$STATE_DIR/hook.log"
+fi
 if [ -n "$MEMPAL_DIR" ] && [ -d "$MEMPAL_DIR" ]; then
-    SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-    REPO_DIR="$(dirname "$SCRIPT_DIR")"
-    mempalace mine "$MEMPAL_DIR" >> "$STATE_DIR/hook.log" 2>&1
+    mempalace mine "$MEMPAL_DIR" --mode projects \
+        >> "$STATE_DIR/hook.log" 2>&1
 fi
 
 # Silent: return empty JSON to not block. "decision": "allow" is invalid —

hooks/mempal_save_hook.sh

@@ -45,10 +45,10 @@
 # stop_hook_active=true so we let it through. No infinite loop.
 #
 # === MEMPALACE CLI ===
-# This repo uses: mempalace mine <dir>
-# or:            mempalace mine <dir> --mode convos
-# Set MEMPAL_DIR below if you want the hook to auto-ingest after blocking.
-# Leave blank to rely on the AI's own save instructions.
+# The hook ALWAYS mines the active conversation transcript automatically
+# (via `mempalace mine <transcript-dir> --mode convos`). MEMPAL_DIR is an
+# *additional*, optional target for project files — it does not replace
+# the conversation mine.
 #
 # === CONFIGURATION ===
 
@@ -56,9 +56,10 @@ SAVE_INTERVAL=15  # Save every N human messages (adjust to taste)
 STATE_DIR="$HOME/.mempalace/hook_state"
 mkdir -p "$STATE_DIR"
 
-# Optional: set to the directory you want auto-ingested on each save trigger.
-# Example: MEMPAL_DIR="$HOME/conversations"
-# Leave empty to skip auto-ingest (AI handles saving via the block reason).
+# Optional: project directory (code / notes / docs) to also mine each
+# save trigger. Mined with `--mode projects`. The conversation transcript
+# is always mined regardless — this is purely additive.
+# Example: MEMPAL_DIR="$HOME/projects/my_app"
 MEMPAL_DIR=""
 
 # Resolve the Python interpreter the hook should use.
@@ -82,9 +83,11 @@ fi
 INPUT=$(cat)
 
 # Parse all fields in a single Python call (3x faster than separate invocations)
-# SECURITY: All values are sanitized before being interpolated into shell assignments.
-# stop_hook_active is coerced to a strict True/False to prevent command injection via eval.
-eval $(echo "$INPUT" | "$MEMPAL_PYTHON_BIN" -c "
+# without invoking ``eval`` on generated code: Python prints one sanitized
+# value per line, the shell reads them via ``mapfile`` and does plain
+# variable assignment — same data, smaller blast radius if the sanitizer
+# is ever bypassed (#1231 review).
+mapfile -t _mempal_parsed < <(echo "$INPUT" | "$MEMPAL_PYTHON_BIN" -c "
 import sys, json, re
 data = json.load(sys.stdin)
 sid = data.get('session_id', 'unknown')
@@ -94,14 +97,36 @@ tp = data.get('transcript_path', '')
 safe = lambda s: re.sub(r'[^a-zA-Z0-9_/.\-~]', '', str(s))
 # Coerce stop_hook_active to strict boolean string
 sha = 'True' if sha_raw is True or str(sha_raw).lower() in ('true', '1', 'yes') else 'False'
-print(f'SESSION_ID=\"{safe(sid)}\"')
-print(f'STOP_HOOK_ACTIVE=\"{sha}\"')
-print(f'TRANSCRIPT_PATH=\"{safe(tp)}\"')
+print(safe(sid))
+print(sha)
+print(safe(tp))
 " 2>/dev/null)
+SESSION_ID="${_mempal_parsed[0]:-unknown}"
+STOP_HOOK_ACTIVE="${_mempal_parsed[1]:-False}"
+TRANSCRIPT_PATH="${_mempal_parsed[2]:-}"
 
 # Expand ~ in path
 TRANSCRIPT_PATH="${TRANSCRIPT_PATH/#\~/$HOME}"
 
+# Validate that TRANSCRIPT_PATH looks like a transcript file:
+#   - non-empty
+#   - .jsonl or .json suffix
+#   - no traversal segments (.. components)
+# Mirrors mempalace.hooks_cli._validate_transcript_path so the shell hook
+# rejects the same shapes the Python hook rejects (#1231 review).
+is_valid_transcript_path() {
+    local path="$1"
+    [ -n "$path" ] || return 1
+    case "$path" in
+        *.json|*.jsonl) ;;
+        *) return 1 ;;
+    esac
+    case "/$path/" in
+        */../*) return 1 ;;
+    esac
+    return 0
+}
+
 # If we're already in a save cycle, let the AI stop normally
 # This is the infinite-loop prevention: block once → AI saves → tries to stop again → we let it through
 if [ "$STOP_HOOK_ACTIVE" = "True" ] || [ "$STOP_HOOK_ACTIVE" = "true" ]; then
@@ -157,19 +182,23 @@ if [ "$SINCE_LAST" -ge "$SAVE_INTERVAL" ] && [ "$EXCHANGE_COUNT" -gt 0 ]; then
 
     echo "[$(date '+%H:%M:%S')] TRIGGERING SAVE at exchange $EXCHANGE_COUNT" >> "$STATE_DIR/hook.log"
 
-    # Auto-mine the transcript. Two paths:
-    # 1. TRANSCRIPT_PATH (from Claude Code) — mine the directory it lives in
-    # 2. MEMPAL_DIR (user-configured) — mine that directory
-    # At least one should work. If neither is set, nothing mines.
-    MINE_DIR=""
-    if [ -n "$TRANSCRIPT_PATH" ] && [ -f "$TRANSCRIPT_PATH" ]; then
-        MINE_DIR="$(dirname "$TRANSCRIPT_PATH")"
+    # Auto-mine. Two independent targets — both run if both are set:
+    #   1. TRANSCRIPT_PATH (from Claude Code) → parent dir, --mode convos
+    #      (Claude Code session JSONL — must use the convo miner)
+    #   2. MEMPAL_DIR (user-configured project) → --mode projects
+    #      (code, notes, docs)
+    # MEMPAL_DIR is *additive*, not an override: a user with MEMPAL_DIR
+    # pointed at their project still gets the active conversation mined.
+    if is_valid_transcript_path "$TRANSCRIPT_PATH" && [ -f "$TRANSCRIPT_PATH" ]; then
+        mempalace mine "$(dirname "$TRANSCRIPT_PATH")" --mode convos \
+            >> "$STATE_DIR/hook.log" 2>&1 &
+    elif [ -n "$TRANSCRIPT_PATH" ]; then
+        echo "[$(date '+%H:%M:%S')] Skipping invalid transcript path: $TRANSCRIPT_PATH" \
+            >> "$STATE_DIR/hook.log"
     fi
     if [ -n "$MEMPAL_DIR" ] && [ -d "$MEMPAL_DIR" ]; then
-        MINE_DIR="$MEMPAL_DIR"
-    fi
-    if [ -n "$MINE_DIR" ]; then
-        mempalace mine "$MINE_DIR" >> "$STATE_DIR/hook.log" 2>&1 &
+        mempalace mine "$MEMPAL_DIR" --mode projects \
+            >> "$STATE_DIR/hook.log" 2>&1 &
     fi
 
     # MEMPAL_VERBOSE toggle:

mempalace/hooks_cli.py

@@ -197,27 +197,23 @@ def _output(data: dict):
     sys.stdout.buffer.flush()
 
 
-def _get_mine_dir(transcript_path: str = "") -> tuple[str, str]:
-    """Determine directory to mine and the miner mode to use.
+def _get_mine_targets() -> list[tuple[str, str]]:
+    """Return the list of ``(dir, mode)`` targets for auto-ingest.
 
-    Returns ``(dir, mode)`` where ``mode`` is ``"projects"`` or ``"convos"``.
-    Empty ``dir`` means no ingest should run.
+    MEMPAL_DIR (when set and resolvable) contributes a ``"projects"``
+    target. Transcript ingestion is handled separately by
+    ``_ingest_transcript`` — emitting it here too would double-mine the
+    same JSONL into a different wing on every hook fire (#1231 review).
 
-    MEMPAL_DIR is treated as a project directory ("projects" mode). The
-    transcript-path fallback resolves to the parent of a Claude Code
-    session JSONL, which must be mined with the conversation miner —
-    running the projects miner there ingests JSONL as if it were source
-    code.
+    An empty list means no MEMPAL_DIR ingest should run.
     """
+    targets: list[tuple[str, str]] = []
     mempal_dir = os.environ.get("MEMPAL_DIR", "")
     if mempal_dir:
         resolved = Path(mempal_dir).expanduser().resolve()
         if resolved.is_dir():
-            return str(resolved), "projects"
-    path = _validate_transcript_path(transcript_path)
-    if path is not None and path.is_file():
-        return str(path.parent), "convos"
-    return "", "projects"
+            targets.append((str(resolved), "projects"))
+    return targets
 
 
 _MINE_PID_FILE = STATE_DIR / "mine.pid"
@@ -274,31 +270,52 @@ def _spawn_mine(cmd: list) -> None:
     _MINE_PID_FILE.write_text(str(proc.pid))
 
 
-def _maybe_auto_ingest(transcript_path: str = ""):
-    """Run mempalace mine in background if a mine directory is available."""
-    mine_dir, mode = _get_mine_dir(transcript_path)
-    if not mine_dir:
+def _maybe_auto_ingest():
+    """Background-mine MEMPAL_DIR (project files) if set.
+
+    Transcript convos are ingested separately via ``_ingest_transcript``
+    in the hook handlers — this function does not handle them, to avoid
+    asymmetric interpreter handling and PID-file overwrite when both
+    targets fire from a single hook call (#1231 review).
+    """
+    targets = _get_mine_targets()
+    if not targets:
         return
     if _mine_already_running():
         _log("Skipping auto-ingest: mine already running")
         return
+    for mine_dir, mode in targets:
         try:
-        _spawn_mine([sys.executable, "-m", "mempalace", "mine", mine_dir, "--mode", mode])
+            _spawn_mine([_mempalace_python(), "-m", "mempalace", "mine", mine_dir, "--mode", mode])
         except OSError:
             pass
 
 
-def _mine_sync(transcript_path: str = ""):
-    """Run mempalace mine synchronously (for precompact -- data must land first)."""
-    mine_dir, mode = _get_mine_dir(transcript_path)
-    if not mine_dir:
+def _mine_sync():
+    """Synchronously mine MEMPAL_DIR (precompact path).
+
+    Transcript convos are ingested separately via ``_ingest_transcript``
+    in ``hook_precompact`` — keeping them out of this function avoids
+    timeout stacking against the harness 30s ceiling (#1231 review).
+    """
+    targets = _get_mine_targets()
+    if not targets:
         return
-    try:
     STATE_DIR.mkdir(parents=True, exist_ok=True)
     log_path = STATE_DIR / "hook.log"
+    for mine_dir, mode in targets:
+        try:
             with open(log_path, "a") as log_f:
                 subprocess.run(
-                [sys.executable, "-m", "mempalace", "mine", mine_dir, "--mode", mode],
+                    [
+                        _mempalace_python(),
+                        "-m",
+                        "mempalace",
+                        "mine",
+                        mine_dir,
+                        "--mode",
+                        mode,
+                    ],
                     stdout=log_f,
                     stderr=log_f,
                     timeout=60,
@@ -603,7 +620,7 @@ def hook_stop(data: dict, harness: str):
                     transcript_path, session_id, wing=project_wing, toast=toast
                 )
                 _ingest_transcript(transcript_path)
-            _maybe_auto_ingest(transcript_path)
+            _maybe_auto_ingest()
             # Only advance save marker after successful save
             count = result.get("count", 0)
             if count > 0:
@@ -633,7 +650,7 @@ def hook_stop(data: dict, harness: str):
                 pass
             if transcript_path:
                 _ingest_transcript(transcript_path)
-            _maybe_auto_ingest(transcript_path)
+            _maybe_auto_ingest()
             reason = STOP_BLOCK_REASON + f" Write diary entry to wing={project_wing}."
             _output({"decision": "block", "reason": reason})
     else:
@@ -666,8 +683,10 @@ def hook_precompact(data: dict, harness: str):
     if transcript_path:
         _ingest_transcript(transcript_path)
 
-    # Mine synchronously so data lands before compaction proceeds
-    _mine_sync(transcript_path)
+    # Mine MEMPAL_DIR synchronously so project data lands before
+    # compaction proceeds. Transcript convos were already kicked off
+    # above via _ingest_transcript.
+    _mine_sync()
 
     _output({})
 

tests/test_hooks_cli.py

@@ -12,7 +12,7 @@ from mempalace.hooks_cli import (
     SAVE_INTERVAL,
     _count_human_messages,
     _extract_recent_messages,
-    _get_mine_dir,
+    _get_mine_targets,
     _log,
     _maybe_auto_ingest,
     _mempalace_python,
@@ -450,35 +450,26 @@ def test_maybe_auto_ingest_with_env(tmp_path):
                     assert cmd[cmd.index("--mode") + 1] == "projects"
 
 
-def test_maybe_auto_ingest_with_transcript(tmp_path):
-    """Transcript fallback spawns mine in convos mode against the JSONL parent."""
-    transcript = tmp_path / "t.jsonl"
-    transcript.write_text("")
-    with patch.dict("os.environ", {}, clear=True):
+def test_maybe_auto_ingest_uses_mempalace_python(tmp_path):
+    """Spawned mine command uses _mempalace_python(), not bare sys.executable.
+
+    Hook subprocesses inherit the harness PATH which on GUI-launched
+    Claude Code may resolve to a system Python without chromadb. The
+    interpreter used here must be the same one the hook itself runs
+    under (typically the venv that owns mempalace).
+    """
+    mempal_dir = tmp_path / "project"
+    mempal_dir.mkdir()
+    with patch.dict("os.environ", {"MEMPAL_DIR": str(mempal_dir)}):
         with patch("mempalace.hooks_cli.STATE_DIR", tmp_path):
             with patch("mempalace.hooks_cli._MINE_PID_FILE", tmp_path / "mine.pid"):
+                with patch(
+                    "mempalace.hooks_cli._mempalace_python", return_value="/fake/venv/python"
+                ):
                     with patch("mempalace.hooks_cli.subprocess.Popen") as mock_popen:
-                    _maybe_auto_ingest(str(transcript))
-                    mock_popen.assert_called_once()
+                        _maybe_auto_ingest()
                         cmd = mock_popen.call_args[0][0]
-                    assert "mine" in cmd
-                    assert str(tmp_path.resolve()) in cmd
-                    assert cmd[cmd.index("--mode") + 1] == "convos"
-
-
-def test_mine_sync_with_transcript_uses_convos_mode(tmp_path):
-    """Precompact sync path also picks convos mode for JSONL transcripts."""
-    transcript = tmp_path / "t.jsonl"
-    transcript.write_text("")
-    with patch.dict("os.environ", {}, clear=True):
-        with patch("mempalace.hooks_cli.STATE_DIR", tmp_path):
-            with patch("mempalace.hooks_cli.subprocess.run") as mock_run:
-                _mine_sync(str(transcript))
-                mock_run.assert_called_once()
-                cmd = mock_run.call_args[0][0]
-                assert "mine" in cmd
-                assert str(tmp_path.resolve()) in cmd
-                assert cmd[cmd.index("--mode") + 1] == "convos"
+                        assert cmd[0] == "/fake/venv/python"
 
 
 def test_mine_sync_with_env_uses_projects_mode(tmp_path):
@@ -494,6 +485,57 @@ def test_mine_sync_with_env_uses_projects_mode(tmp_path):
                 assert cmd[cmd.index("--mode") + 1] == "projects"
 
 
+def test_mine_sync_uses_mempalace_python(tmp_path):
+    """Sync mine command uses _mempalace_python(), not bare sys.executable."""
+    mempal_dir = tmp_path / "project"
+    mempal_dir.mkdir()
+    with patch.dict("os.environ", {"MEMPAL_DIR": str(mempal_dir)}):
+        with patch("mempalace.hooks_cli.STATE_DIR", tmp_path):
+            with patch("mempalace.hooks_cli._mempalace_python", return_value="/fake/venv/python"):
+                with patch("mempalace.hooks_cli.subprocess.run") as mock_run:
+                    _mine_sync()
+                    cmd = mock_run.call_args[0][0]
+                    assert cmd[0] == "/fake/venv/python"
+
+
+def test_maybe_auto_ingest_ignores_transcript_arg_path(tmp_path):
+    """_maybe_auto_ingest does NOT mine the transcript directory.
+
+    Transcript convos are handled by _ingest_transcript (called separately
+    in hook handlers). _maybe_auto_ingest only handles MEMPAL_DIR — even
+    when invoked in a context where a transcript is also being processed,
+    no second spawn for the transcript dir should appear here.
+    """
+    convo_dir = tmp_path / "convos"
+    convo_dir.mkdir()
+    transcript = convo_dir / "session.jsonl"
+    transcript.write_text("")
+    with patch.dict("os.environ", {}, clear=True):
+        with patch("mempalace.hooks_cli.STATE_DIR", tmp_path):
+            with patch("mempalace.hooks_cli._MINE_PID_FILE", tmp_path / "mine.pid"):
+                with patch("mempalace.hooks_cli.subprocess.Popen") as mock_popen:
+                    _maybe_auto_ingest()
+                    mock_popen.assert_not_called()
+
+
+def test_mine_sync_ignores_transcript(tmp_path):
+    """_mine_sync does not run a convos mine for the transcript dir.
+
+    The precompact transcript ingest is the responsibility of
+    _ingest_transcript; routing it through _mine_sync would stack a
+    second 60s timeout against the harness 30s ceiling.
+    """
+    convo_dir = tmp_path / "convos"
+    convo_dir.mkdir()
+    transcript = convo_dir / "session.jsonl"
+    transcript.write_text("")
+    with patch.dict("os.environ", {}, clear=True):
+        with patch("mempalace.hooks_cli.STATE_DIR", tmp_path):
+            with patch("mempalace.hooks_cli.subprocess.run") as mock_run:
+                _mine_sync()
+                mock_run.assert_not_called()
+
+
 def test_maybe_auto_ingest_oserror(tmp_path):
     """OSError during subprocess spawn is silenced."""
     mempal_dir = tmp_path / "project"
@@ -550,70 +592,78 @@ def test_mine_already_running_corrupt_file(tmp_path):
         assert _mine_already_running() is False
 
 
-# --- _get_mine_dir ---
+# --- _get_mine_targets ---
 
 
-def test_get_mine_dir_mempal_dir(tmp_path):
-    """MEMPAL_DIR takes priority, is expanded/resolved, and is treated as projects mode."""
+def test_get_mine_targets_mempal_dir_only(tmp_path):
+    """MEMPAL_DIR alone yields a single projects target, expanded/resolved."""
     mempal_dir = tmp_path / "project"
     mempal_dir.mkdir()
-    transcript = tmp_path / "t.jsonl"
-    transcript.write_text("")
     with patch.dict("os.environ", {"MEMPAL_DIR": str(mempal_dir)}):
-        result_dir, result_mode = _get_mine_dir(str(transcript))
-        assert Path(result_dir).resolve() == mempal_dir.resolve()
-        assert result_mode == "projects"
+        targets = _get_mine_targets()
+    assert len(targets) == 1
+    assert Path(targets[0][0]).resolve() == mempal_dir.resolve()
+    assert targets[0][1] == "projects"
 
 
-def test_get_mine_dir_mempal_dir_tilde(tmp_path):
+def test_get_mine_targets_mempal_dir_tilde(tmp_path):
     """MEMPAL_DIR with a tilde prefix is expanded correctly."""
     mempal_dir = tmp_path / "project"
     mempal_dir.mkdir()
     home = Path.home()
-    # Build a ~-relative path only if tmp_path is inside home
     try:
         rel = mempal_dir.relative_to(home)
     except ValueError:
         pytest.skip("tmp_path is not under home, cannot build ~-relative path")
     tilde_path = "~/" + str(rel)
     with patch.dict("os.environ", {"MEMPAL_DIR": tilde_path}):
-        result_dir, result_mode = _get_mine_dir("")
-        assert Path(result_dir).resolve() == mempal_dir.resolve()
-        assert result_mode == "projects"
+        targets = _get_mine_targets()
+    assert len(targets) == 1
+    assert Path(targets[0][0]).resolve() == mempal_dir.resolve()
+    assert targets[0][1] == "projects"
 
 
-def test_get_mine_dir_transcript_fallback(tmp_path):
-    """Transcript fallback resolves to its parent dir in convos mode."""
+def test_get_mine_targets_no_transcript_target(tmp_path):
+    """_get_mine_targets does not emit a convos target for the transcript path.
+
+    Transcript ingestion is owned by _ingest_transcript; emitting it
+    here too would double-mine the same JSONL into a different wing on
+    every hook fire (#1231 review).
+    """
     transcript = tmp_path / "t.jsonl"
     transcript.write_text("")
     with patch.dict("os.environ", {}, clear=True):
-        result_dir, result_mode = _get_mine_dir(str(transcript))
-        assert Path(result_dir).resolve() == tmp_path.resolve()
-        assert result_mode == "convos"
+        targets = _get_mine_targets()
+    assert targets == []
 
 
-def test_get_mine_dir_transcript_path_traversal_rejected(tmp_path):
-    """Transcript paths with '..' components are rejected and return no dir."""
+def test_get_mine_targets_only_returns_mempal_dir(tmp_path):
+    """When MEMPAL_DIR is set, exactly one projects target — never a convos target."""
+    mempal_dir = tmp_path / "project"
+    mempal_dir.mkdir()
+    with patch.dict("os.environ", {"MEMPAL_DIR": str(mempal_dir)}):
+        targets = _get_mine_targets()
+    assert len(targets) == 1
+    assert targets[0][1] == "projects"
+
+
+def test_validate_transcript_path_traversal_rejected_jsonl(tmp_path):
+    """Path traversal is rejected even when the path has a .jsonl suffix.
+
+    The pre-fix test used "../../etc/passwd" which lacks an extension and
+    so was rejected by the suffix gate before the traversal check ever
+    fired (Copilot review on #1231). Use a .jsonl path with `..`
+    segments to exercise the traversal guard specifically.
+    """
+    assert _validate_transcript_path("../t.jsonl") is None
+    assert _validate_transcript_path("a/../b.jsonl") is None
+    assert _validate_transcript_path("/tmp/../etc/t.jsonl") is None
+
+
+def test_get_mine_targets_empty():
+    """Returns empty list when MEMPAL_DIR is unset or invalid."""
     with patch.dict("os.environ", {}, clear=True):
-        result_dir, result_mode = _get_mine_dir("../../etc/passwd")
-        assert result_dir == ""
-        assert result_mode == "projects"
-
-
-def test_get_mine_dir_transcript_non_jsonl_rejected(tmp_path):
-    """Transcript paths without .jsonl/.json extension are rejected."""
-    bad = tmp_path / "notes.txt"
-    bad.write_text("content")
-    with patch.dict("os.environ", {}, clear=True):
-        result_dir, result_mode = _get_mine_dir(str(bad))
-        assert result_dir == ""
-        assert result_mode == "projects"
-
-
-def test_get_mine_dir_empty():
-    """Returns empty dir when nothing is available."""
-    with patch.dict("os.environ", {}, clear=True):
-        assert _get_mine_dir("") == ("", "projects")
+        assert _get_mine_targets() == []
 
 
 # --- _parse_harness_input ---
@@ -733,10 +783,19 @@ def test_precompact_with_timeout(tmp_path):
 
 
 def test_precompact_mines_transcript_dir(tmp_path, monkeypatch):
-    """Precompact mines transcript directory when no MEMPAL_DIR."""
+    """Precompact ingests the active transcript via _ingest_transcript.
+
+    With no MEMPAL_DIR, _mine_sync is a no-op; the transcript ingest is
+    the only mining that should fire, and it goes through Popen
+    (background) inside _ingest_transcript. Pre-#1231-review this test
+    asserted against subprocess.run, which corresponded to the
+    duplicate-mine path that has now been removed.
+    """
     transcript = tmp_path / "t.jsonl"
-    transcript.write_text("")
+    # _ingest_transcript skips files smaller than 100 bytes, so pad it.
+    transcript.write_text("x" * 200)
     monkeypatch.delenv("MEMPAL_DIR", raising=False)
+    with patch("mempalace.hooks_cli.subprocess.Popen") as mock_popen:
         with patch("mempalace.hooks_cli.subprocess.run") as mock_run:
             result = _capture_hook_output(
                 hook_precompact,
@@ -744,11 +803,13 @@ def test_precompact_mines_transcript_dir(tmp_path, monkeypatch):
                 state_dir=tmp_path,
             )
     assert result == {}
-    mock_run.assert_called_once()
-    # Mine dir is the transcript's parent (resolved) and mode is convos for JSONL.
-    call_args = mock_run.call_args[0][0]
-    assert str(tmp_path.resolve()) in call_args
-    assert call_args[call_args.index("--mode") + 1] == "convos"
+    mock_run.assert_not_called()
+    mock_popen.assert_called_once()
+    cmd = mock_popen.call_args[0][0]
+    # Mines the transcript's parent dir as convos, into wing "sessions".
+    assert str(tmp_path) in cmd
+    assert cmd[cmd.index("--mode") + 1] == "convos"
+    assert cmd[cmd.index("--wing") + 1] == "sessions"
 
 
 # --- run_hook ---

tests/test_save_hook_mines.py

@@ -9,6 +9,9 @@ Written BEFORE the fix.
 """
 
 import os
+import sys
+
+import pytest
 
 
 class TestSaveHookAutoMines:
@@ -16,7 +19,8 @@ class TestSaveHookAutoMines:
 
     def test_hook_mines_transcript_path(self):
         """The hook receives TRANSCRIPT_PATH from Claude Code.
-        It should use that to mine the conversation, not depend on MEMPAL_DIR."""
+        It should use that to mine the conversation as --mode convos,
+        independently of MEMPAL_DIR (which is for project files only)."""
         hook_path = os.path.join(
             os.path.dirname(os.path.dirname(__file__)),
             "hooks",
@@ -24,23 +28,17 @@ class TestSaveHookAutoMines:
         )
         src = open(hook_path).read()
 
-        # The hook ALREADY receives TRANSCRIPT_PATH in the JSON input.
-        # It should use this to mine the current session's transcript
-        # regardless of whether MEMPAL_DIR is set.
-        # The hook must have a path that uses TRANSCRIPT_PATH to determine
-        # what to mine, separate from the MEMPAL_DIR path.
-        uses_transcript = "TRANSCRIPT_PATH" in src
-        has_mine = "mempalace mine" in src
-        # TRANSCRIPT_PATH must appear in the mining logic, not just the parse block
-        transcript_drives_mine = "MINE_DIR" in src and "dirname" in src and "TRANSCRIPT_PATH" in src
-
-        assert uses_transcript and has_mine and transcript_drives_mine, (
-            "Save hook only mines when MEMPAL_DIR is set (defaults to empty). "
-            "The hook receives TRANSCRIPT_PATH from Claude Code — it should "
-            "mine that file automatically so conversations are saved without "
-            "the user setting an env var. Currently the hook says 'saved in "
-            "background' but nothing actually saves."
-        )
+        # The hook must drive the conversation mine off TRANSCRIPT_PATH,
+        # using `dirname` to derive the parent dir, and tagging it with
+        # `--mode convos` so the convo miner runs (not the projects miner).
+        assert "TRANSCRIPT_PATH" in src, "hook must read transcript_path"
+        assert "mempalace mine" in src, "hook must invoke `mempalace mine`"
+        assert (
+            'dirname "$TRANSCRIPT_PATH"' in src
+        ), "hook must mine the transcript's parent directory"
+        assert (
+            "--mode convos" in src
+        ), "transcript mine must use --mode convos, not the projects miner"
 
     def test_mempal_dir_default_not_empty(self):
         """If MEMPAL_DIR is still used, it should have a sensible default,
@@ -66,3 +64,69 @@ class TestSaveHookAutoMines:
                 'MEMPAL_DIR defaults to "" which silently disables mining. '
                 "Either set a default path or add transcript-based mining."
             )
+
+
+class TestShellHookTranscriptValidation:
+    """Both shell hooks must validate transcript paths before mining them.
+
+    Mirrors mempalace.hooks_cli._validate_transcript_path so unsafe paths
+    (no extension, traversal segments) are rejected at the shell layer
+    too — added in #1231 review (Copilot #7, #8).
+    """
+
+    @staticmethod
+    def _hook_src(name: str) -> str:
+        path = os.path.join(os.path.dirname(os.path.dirname(__file__)), "hooks", name)
+        return open(path).read()
+
+    @staticmethod
+    def _strip_comments(src: str) -> str:
+        return "\n".join(line for line in src.splitlines() if not line.lstrip().startswith("#"))
+
+    def test_save_hook_defines_and_uses_validator(self):
+        src = self._strip_comments(self._hook_src("mempal_save_hook.sh"))
+        assert "is_valid_transcript_path() {" in src, "validator function must be defined"
+        assert (
+            'is_valid_transcript_path "$TRANSCRIPT_PATH"' in src
+        ), "validator must be invoked against TRANSCRIPT_PATH before mining"
+
+    def test_precompact_hook_defines_and_uses_validator(self):
+        src = self._strip_comments(self._hook_src("mempal_precompact_hook.sh"))
+        assert "is_valid_transcript_path() {" in src, "validator function must be defined"
+        assert (
+            'is_valid_transcript_path "$TRANSCRIPT_PATH"' in src
+        ), "validator must be invoked against TRANSCRIPT_PATH before mining"
+
+    @pytest.mark.skipif(
+        sys.platform == "win32",
+        reason="shell hooks are POSIX-only; Windows CI bash maps to wsl.exe with no distro",
+    )
+    def test_validators_run_via_bash(self, tmp_path):
+        """Source the validator out of each hook and exercise it directly."""
+        import subprocess
+
+        for name in ("mempal_save_hook.sh", "mempal_precompact_hook.sh"):
+            src = self._hook_src(name)
+            # Extract just the function definition (first occurrence).
+            start = src.index("is_valid_transcript_path() {")
+            end = src.index("\n}\n", start) + 2
+            func_src = src[start:end]
+            script = tmp_path / "v.sh"
+            script.write_text(
+                f"{func_src}\n" 'is_valid_transcript_path "$1" && echo OK || echo NO\n'
+            )
+
+            def run(arg: str) -> str:
+                return subprocess.run(
+                    ["bash", str(script), arg],
+                    capture_output=True,
+                    text=True,
+                    check=False,
+                ).stdout.strip()
+
+            assert run("/tmp/sessions/abc.jsonl") == "OK"
+            assert run("/tmp/sessions/abc.json") == "OK"
+            assert run("") == "NO"
+            assert run("/tmp/notes.txt") == "NO"
+            assert run("../etc/passwd.jsonl") == "NO"
+            assert run("/tmp/../etc/t.jsonl") == "NO"