Release v3.5.0 — promote develop to main

.claude-plugin/README.md

@@ -1,6 +1,6 @@
 # MemPalace Claude Code Plugin
 
-A Claude Code plugin that gives your AI a persistent memory system. Mine projects and conversations into a searchable palace backed by ChromaDB, with 33 MCP tools, auto-save hooks, and 5 guided skills.
+A Claude Code plugin that gives your AI a persistent memory system. Mine projects and conversations into a searchable palace backed by ChromaDB, with 35 MCP tools, auto-save hooks, and 5 guided skills.
 
 ## Prerequisites
 
@@ -41,16 +41,17 @@ After installing the plugin, run the init command to complete setup (installs th
 
 ## Hooks
 
-MemPalace registers two hooks that run automatically:
+MemPalace registers three hooks that run automatically:
 
 - **Stop** -- Saves conversation context every 15 messages.
+- **SessionEnd** -- Runs one final save in the background on a clean exit, so short sessions that never hit the Stop interval or a compaction are still captured.
 - **PreCompact** -- Preserves important memories before context compaction.
 
 Set the `MEMPAL_DIR` environment variable to a directory path to automatically run `mempalace mine` on that directory during each save trigger.
 
 ## MCP Server
 
-The plugin automatically configures a local MCP server with 33 tools for storing, searching, and managing memories. No manual MCP setup is required -- `/mempalace:init` handles everything.
+The plugin automatically configures a local MCP server with 34 tools for storing, searching, and managing memories. No manual MCP setup is required -- `/mempalace:init` handles everything.
 
 ## Full Documentation
 

.claude-plugin/hooks/hooks.json

@@ -12,6 +12,17 @@
         ]
       }
     ],
+    "SessionEnd": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "bash \"${CLAUDE_PLUGIN_ROOT}/hooks/mempal-session-end-hook.sh\"",
+            "timeout": 10
+          }
+        ]
+      }
+    ],
     "PreCompact": [
       {
         "hooks": [

.claude-plugin/hooks/mempal-session-end-hook.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# MemPalace SessionEnd Hook — thin wrapper calling the Python CLI.
+#
+# Claude Code documents a default SessionEnd hook timeout of 1.5s, and
+# "timeouts set on plugin-provided hooks do not raise the budget"
+# (https://code.claude.com/docs/en/hooks). A cold `mempalace` start alone
+# exceeds 1.5s, so the final mine must NOT run in the foreground — it would be
+# killed before it saved anything. Unlike the foreground Stop/PreCompact plugin
+# wrappers, this one backgrounds the hook and returns immediately; the detached
+# child finishes the save after the session has exited. All logic lives in
+# mempalace.hooks_cli for cross-harness extensibility.
+run_mempalace_hook() {
+  if command -v mempalace >/dev/null 2>&1; then
+    exec mempalace hook run "$@"
+  fi
+
+  MEMPAL_PYTHON_BIN="${MEMPAL_PYTHON:-}"
+  if [ -z "$MEMPAL_PYTHON_BIN" ] || [ ! -x "$MEMPAL_PYTHON_BIN" ]; then
+    MEMPAL_PYTHON_BIN="$(command -v python3 2>/dev/null || echo python3)"
+  fi
+  if "$MEMPAL_PYTHON_BIN" -c "import mempalace" >/dev/null 2>&1; then
+    exec "$MEMPAL_PYTHON_BIN" -m mempalace hook run "$@"
+  fi
+
+  if command -v python >/dev/null 2>&1 && python -c "import mempalace" >/dev/null 2>&1; then
+    exec python -m mempalace hook run "$@"
+  fi
+
+  echo "MemPalace hook error: could not find a runnable mempalace command or module" >&2
+  exit 1
+}
+
+# Capture stdin (the SessionEnd JSON) before backgrounding — the parent's
+# stdin is gone once we return. Forward it to the detached worker, which runs
+# the final mine on its own time and outlives this process.
+payload="$(cat)"
+(
+  printf '%s' "$payload" | run_mempalace_hook --hook session-end --harness "${MEMPALACE_HOOK_HARNESS:-claude-code}"
+) >/dev/null 2>&1 </dev/null &
+disown 2>/dev/null || true
+
+# Return immediately so the harness never blocks on session exit.
+printf '{}'

.claude-plugin/marketplace.json

@@ -8,8 +8,8 @@
     {
       "name": "mempalace",
       "source": "./.claude-plugin",
-      "description": "AI memory system — mine projects and conversations into a searchable palace. 33 MCP tools, auto-save hooks, guided setup.",
-      "version": "3.4.1",
+      "description": "AI memory system — mine projects and conversations into a searchable palace. 35 MCP tools, auto-save hooks, guided setup.",
+      "version": "3.5.0",
       "author": {
         "name": "milla-jovovich"
       }

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "mempalace",
-  "version": "3.4.1",
-  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 33 MCP tools, auto-save hooks, and guided setup.",
+  "version": "3.5.0",
+  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 35 MCP tools, auto-save hooks, and guided setup.",
   "author": {
     "name": "milla-jovovich"
   },

.claude-plugin/skills/mempalace-recall/SKILL.md

@@ -53,6 +53,13 @@ a variable, fixing a typo). Recall is question-driven, not reflexive.
   an answer. Offer to widen the search or file the new information.
 - **MCP error / server down** — surface the error, suggest `mempalace
   status` or re-running `/init`; never fall back to guessing.
+- **Palace index corrupt / compactor error** — if the server reports an
+  HNSW segment-writer error, a ChromaDB compaction failure, or stays
+  "Not connected" after a write, the index is out of sync with
+  `chroma.sqlite3` but the rows are intact. Tell the user to stop the
+  server and rebuild from SQLite (`mempalace repair --mode from-sqlite
+  --archive-existing --yes`), not re-mine, which drops MCP-added drawers
+  and diary entries (#1843). Do not repair in-process.
 - **Conflicting facts** — trust the knowledge graph's time-valid answer;
   invalidate-then-add rather than overwriting silently.
 

.codex-plugin/README.md

@@ -1,6 +1,6 @@
 # MemPalace - Codex CLI Plugin
 
-Give your AI a persistent memory -- mine projects and conversations into a searchable palace backed by ChromaDB, with 33 MCP tools, auto-save hooks, and guided skills.
+Give your AI a persistent memory -- mine projects and conversations into a searchable palace backed by ChromaDB, with 35 MCP tools, auto-save hooks, and guided skills.
 
 ## Prerequisites
 

.codex-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "mempalace",
-  "version": "3.4.1",
-  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 33 MCP tools, auto-save hooks, and guided setup.",
+  "version": "3.5.0",
+  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 35 MCP tools, auto-save hooks, and guided setup.",
   "author": {
     "name": "milla-jovovich"
   },
@@ -27,7 +27,7 @@
   "interface": {
     "displayName": "MemPalace",
     "shortDescription": "AI memory system for Codex",
-    "longDescription": "Give your AI a persistent memory — mine projects and conversations into a searchable palace backed by ChromaDB, with 33 MCP tools, auto-save hooks, and guided skills.",
+    "longDescription": "Give your AI a persistent memory — mine projects and conversations into a searchable palace backed by ChromaDB, with 35 MCP tools, auto-save hooks, and guided skills.",
     "developerName": "milla-jovovich",
     "category": "Coding",
     "capabilities": [

.cursor-plugin/README.md

@@ -1,6 +1,6 @@
 # MemPalace Cursor Plugin
 
-A Cursor IDE plugin that gives your agent a persistent memory system. Auto-registers the `mempalace-mcp` server (33 MCP tools), ships 5 slash commands, two model-invocable skills (setup/mining/search and a recall protocol), and an optional recall rule.
+A Cursor IDE plugin that gives your agent a persistent memory system. Auto-registers the `mempalace-mcp` server (35 MCP tools), ships 5 slash commands, two model-invocable skills (setup/mining/search and a recall protocol), and an optional recall rule.
 
 > Hooks (auto-save + session-start memory recall) are shipped separately under `hooks/cursor/` so the plugin is safe to install in any Cursor workspace without touching the agent loop. See [Hooks](#hooks-optional) below.
 
@@ -87,7 +87,7 @@ This plugin ships `mcp.json` at the plugin root, so Cursor auto-loads the `mempa
 }
 ```
 
-All 33 MemPalace MCP tools (`mempalace_search`, `mempalace_add_drawer`, `mempalace_diary_write`, `mempalace_check_duplicate`, `mempalace_diary_read`, …) become available to the agent immediately. No manual `~/.cursor/mcp.json` edit required.
+All 34 MemPalace MCP tools (`mempalace_search`, `mempalace_add_drawer`, `mempalace_diary_write`, `mempalace_check_duplicate`, `mempalace_diary_read`, …) become available to the agent immediately. No manual `~/.cursor/mcp.json` edit required.
 
 If the server doesn't appear, confirm `mempalace-mcp` is on the user `$PATH`:
 

.cursor-plugin/marketplace.json

@@ -8,7 +8,7 @@
     {
       "name": "mempalace",
       "source": ".",
-      "description": "AI memory system — mine projects and conversations into a searchable palace. 33 MCP tools, slash commands, and a guided skill for Cursor.",
+      "description": "AI memory system — mine projects and conversations into a searchable palace. 35 MCP tools, slash commands, and a guided skill for Cursor.",
       "author": {
         "name": "milla-jovovich"
       }

.cursor-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "mempalace",
-  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 33 MCP tools, slash commands, and a guided skill for Cursor.",
+  "description": "Give your AI a memory — mine projects and conversations into a searchable palace. 35 MCP tools, slash commands, and a guided skill for Cursor.",
   "author": {
     "name": "milla-jovovich"
   },

.github/workflows/ci.yml

@@ -30,7 +30,13 @@ jobs:
           python-version: "3.13"
           cache: 'pip'
       - run: pip install -e ".[dev]"
-      - run: python -m pytest tests/ -v --ignore=tests/benchmarks --cov=mempalace --cov-report=term-missing --cov-fail-under=80 --durations=10
+      # ChromaDB's rust HNSW core intermittently fails compaction on Windows
+      # ("Failed to apply logs to the hnsw segment writer") regardless of our
+      # code — a long-standing, non-reproducible-on-Linux/macOS flake. Retry
+      # ONLY that specific transient error (via --only-rerun) so real,
+      # deterministic failures still fail on the first run. Linux/macOS jobs
+      # deliberately run with no reruns so genuine regressions surface there.
+      - run: python -m pytest tests/ -v --ignore=tests/benchmarks --cov=mempalace --cov-report=term-missing --cov-fail-under=80 --durations=10 --reruns 2 --reruns-delay 5 --only-rerun "Failed to apply logs to the hnsw segment writer"
 
   test-macos:
     runs-on: macos-latest

.github/workflows/docker-publish.yml

@@ -36,15 +36,15 @@ jobs:
       # do not push.
       - name: Log in to GHCR
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Extract metadata
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@v6
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           # latest -> main (the latest release); semver tags -> released versions.
@@ -56,7 +56,7 @@ jobs:
             type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
 
       - name: Build and push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile
@@ -85,7 +85,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Build GPU image (validation only — not published)
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           context: .
           file: ./Dockerfile.gpu

CHANGELOG.md

@@ -10,6 +10,58 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 ---
 
+## [3.5.0] — 2026-06-22
+
+### Features
+
+- **Opt-in local daemon for queued writes.** A new `mempalace daemon` queues MemPalace writes through a single local process so background mines, diary saves, and hook-driven ingests serialize against one palace handle instead of racing for it. Opt-in and local-only — nothing binds to a public interface. (#1826)
+
+- **Opt-in HTTP transport for the MCP server.** `mempalace-mcp --transport http` serves JSON-RPC at `POST /mcp` (with a `GET /healthz` liveness probe) for operators running MemPalace behind a long-lived HTTP MCP client/proxy, avoiding the long-lived-stdio framing failures of #1801. stdio remains the default and is unchanged. The transport reuses the exact stdio request dispatcher (no separate write/search path), binds `127.0.0.1` by default, and is hardened against the two ways a local HTTP server leaks to the network: it pins the `Host` header to loopback on a loopback bind and rejects any non-loopback browser `Origin` (DNS-rebinding/SSRF guard), and supports an optional bearer token via `MEMPALACE_MCP_HTTP_TOKEN` (required on `/mcp`, never on `/healthz`). A 16 MiB request cap and a loud warning when bound to a non-loopback host round it out. (#1801, #1806)
+
+- **`mempalace_checkpoint` batch-save MCP tool.** Collapses multiple `add_drawer` calls plus an optional diary entry into a single MCP round-trip for agents that want to file a whole session at once. Stores content verbatim and reuses the existing idempotent add/dedup path. (#1851)
+
+- **`mempalace_delete_by_source` bulk-cleanup MCP tool.** Exact-match, dry-run-by-default deletion of every drawer (and its matching closet/AAAK index entries) for a given `source_file` — the recourse for benchmark/eval files mined into the same wing as real data and drowning out search. The dry run reports the drawer and closet blast radius before anything is removed, and the commit writes a WAL audit entry. (#1722, #1729)
+
+- **Optional `source_file` filter for `mempalace_search`.** Scope a search to an exact stored source path. The filter is threaded through every search path (vector, BM25/SQLite fallback, lexical union, and index-mismatch fallback) so it never silently drops a matching drawer, and results now expose the full `source_path` as a round-trippable key. (#1815, #1817)
+
+- **New transcript parsers / importers.** Continue.dev session parser (#731), Gemini CLI / AI Studio JSON session import (#204), and a Pi agent JSONL session normalizer (#169).
+
+- **Wider miner language coverage.** C# / .NET, PHP (#1819), Swift / Kotlin (#1368), and Java project detection including rootless subprojects (#1720).
+
+- **Final mine on Claude plugin `SessionEnd`.** The Claude Code plugin now runs a closing mine when a session ends so the last exchanges are captured without waiting for the next save nudge. (#1814, #1820)
+
+### Performance
+
+- **Overview/status MCP tools answer from the SQLite aggregate.** Large palaces no longer time out building wing/room/status overviews — the counts come from a single SQLite aggregate instead of a client-side fetch-and-tally. (#1748, #1379)
+
+- **`graph_stats` SQLite fast path.** Knowledge-graph stats are computed in SQLite rather than walking the collection, fixing large-palace timeouts. (#1379)
+
+- **Embedder caps ONNX-runtime intra-op threads** so a background mine no longer pins every core. (#1068)
+
+- **Backend pagination pushed into the query.** `sqlite_exact` (#1841, #1842) and `pgvector` (#1830, #1840) now apply `get(limit, offset)` in SQL, and Qdrant fetches bulk metadata in a single scroll with a larger page size (#1796, #1832).
+
+### Bug Fixes
+
+- **pgvector tolerates hostile transcript bytes.** A lone Unicode surrogate (#1833) or a NUL byte (#1829) in a transcript no longer aborts the whole mine — both are sanitized before the row is written.
+
+- **SQLite read-only URIs are percent-encoded** so palace paths with spaces or special characters open correctly, and `_sqlite_graph_stats` is routed through the same `sqlite_read_uri` helper.
+
+- **Stale ChromaDB HNSW divergence routes to the SQLite fallback** instead of failing the read outright. (#1816, #1822)
+
+- **Diverged-index recovery now points at `repair --mode from-sqlite`, not a re-mine.** A failed ChromaDB HNSW compaction leaves the index out of sync while the rows stay intact in `chroma.sqlite3`; the old "re-mine from source" advice silently dropped MCP-added drawers and diary entries (which have no source file). Both the legacy `repair`/`rebuild_index` error messages and the `repair-status` recommendation, plus the recall skill docs, now guide users to rebuild from SQLite. (#1843, #1847, #1849)
+
+- **The MCP server refuses a second writer for the same palace** rather than letting two processes race the same HNSW handle. (#1818, #1823)
+
+- **Windows hook miner spawns with `CREATE_NO_WINDOW`** so background mines no longer flash a console window. (#1783, #1848)
+
+- **`fact_checker` `__main__` no longer emits a runpy warning** under the test runner. (#1798)
+
+### Internal
+
+- Live-substrate conformance test module for pgvector (#1769); dependabot bumps for `docker/login-action` (3→4), `docker/build-push-action` (6→7), and `docker/metadata-action` (5→6) (#1788, #1787, #1786); ruff dev dependency bumped to 0.15.18.
+
+---
+
 ## [3.4.1] — 2026-06-14
 
 ### Features

README.md

@@ -225,7 +225,7 @@ Usage and tool reference:
 
 ## MCP server
 
-33 MCP tools cover palace reads/writes, knowledge-graph operations,
+35 MCP tools cover palace reads/writes, knowledge-graph operations,
 cross-wing navigation, drawer management, and agent diaries. Installation
 and the full tool list:
 [mempalaceofficial.com/reference/mcp-tools](https://mempalaceofficial.com/reference/mcp-tools.html).
@@ -285,7 +285,7 @@ PRs welcome. See [CONTRIBUTING.md](CONTRIBUTING.md).
 MIT — see [LICENSE](LICENSE).
 
 <!-- Link Definitions -->
-[version-shield]: https://img.shields.io/badge/version-3.4.1-4dc9f6?style=flat-square&labelColor=0a0e14
+[version-shield]: https://img.shields.io/badge/version-3.5.0-4dc9f6?style=flat-square&labelColor=0a0e14
 [release-link]: https://github.com/MemPalace/mempalace/releases
 [python-shield]: https://img.shields.io/badge/python-3.9+-7dd8f8?style=flat-square&labelColor=0a0e14&logo=python&logoColor=7dd8f8
 [python-link]: https://www.python.org/