diff --git a/AGENTS.md b/AGENTS.md
index 2f1122cb..2bcb1d07 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -1,6 +1,6 @@
 # Tina4 Python — Agent Instructions
 
-v3.13.147. 140 cataloged features, zero dependencies. Python 3.12+.
+v3.13.148. 140 cataloged features, zero dependencies. Python 3.12+.
 
 ## AI Skills
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7058e7c2..e3515a42 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@ https://tina4.com/python/36-releases
 This file records framework-specific changes. The release notes above remain the
 authority for shipped versions.
 
+## 3.13.148 — 2026-10-05
+### Sessions
+- An anonymous request no longer stores a session or sets a session cookie when nothing was ever put in it. A request that only marked the session changed without leaving data in it (deleting a key it never had, `clear()`, `regenerate()` on an empty session) is treated the same — a record with no data is not a session. Requests that store a value, or that arrive with a cookie for an already-stored session, behave as before, so session storage no longer grows with anonymous traffic (static files, 404s, health checks). Fixed across all four frameworks.
+
 ## 3.13.147 — 2026-10-05
 ### Dev MCP tools (fixes tina4-php#271)
 - `database_columns` reads schema metadata, so an empty table returns its columns; a missing table returns a clear `table not found` error.
diff --git a/CLAUDE.md b/CLAUDE.md
index 37bc88c4..25a64d13 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -15,7 +15,7 @@ The full discipline lives in `.claude/skills/tina4-maintainer/SKILL.md`; this bl
 
 # Tina4 Python
 
-Version 3.13.147 - Lightweight Python web framework. See https://tina4.com for full documentation.
+Version 3.13.148 - Lightweight Python web framework. See https://tina4.com for full documentation.
 
 ## Build & Test
 
@@ -939,7 +939,7 @@ uv run tina4python test   # Discovers @tests in src/**/*.py
 - SSE/Streaming via `response.stream()` — Server-Sent Events support for real-time data push. Pass an async generator; framework handles chunked transfer encoding, `text/event-stream` content type, and connection keep-alive
 - MCP server (`tina4_python.mcp`): built-in dev tools auto-start when MCP is a capability of the deployment. Developer API: `McpServer`, `@mcp_tool`, `@mcp_resource`. JSON-RPC 2.0 over SSE. **Security is a two-layer gate (v3.13.40):** `is_enabled()` is a pure capability gate (explicit `TINA4_MCP` wins, else `TINA4_DEBUG`; host-independent), and `is_request_allowed(remote_ip, has_valid_token)` authorises each request on the RAW socket peer (`request.remote_ip`, never X-Forwarded-For): loopback always; a remote caller needs `TINA4_MCP_REMOTE=true` AND a token matching `TINA4_MCP_TOKEN` (never `TINA4_API_KEY`, ADR-0078; sent as Authorization Bearer / X-MCP-Token; no configured token means remote is always denied). Every `/__dev` request (reads too), the MCP endpoints and the `/__dev_reload` socket also require a loopback Host (`localhost`, `127.0.0.1`, `[::1]` or `TINA4_HOST`) and refuse `Sec-Fetch-Site: same-site`/`cross-site` (ADR-0078). `/health` omits `version` outside debug. All MCP surfaces (REST shim, JSON-RPC, SSE) 404 a disallowed caller. `database_query` is SELECT/WITH-only and rejects stacked statements; the file tools are sandboxed to the project root. `is_localhost()` is informational only, not the gate
 - Tests: 6,088 passing, 0 failures, **0 skipped** — measured 2026-09-17 on the lab (Ubuntu 24.04.4 LTS x86_64, Python 3.13.13, live services, `TINA4_REQUIRE_SERVICES=1`, 604s, run as root). **Firebird is NOT excluded.** The lab provisions a live Firebird 5 (`firebirdsql/firebird:5` on :3050, `TINA4_TEST_FIREBIRD_URL`) and those tests run. What IS deliberate is Firebird's absence from the `TINA4_REQUIRE_SERVICES` keyword gate in `tests/conftest.py`: GitHub CI does not provision Firebird, so a Firebird skip has to stay green *there*. Those are two different things and this line used to conflate them into "excluded by design", which read as "the Firebird tests do not run" — they do. **Nothing skips any more.** Reaching 0 skips now also needs the graph engines (Neo4j, Memgraph, ArangoDB, Ultipa, wired via `TINA4_TEST_NEO4J_URL`/`_MEMGRAPH_URL`/`_ARANGO_URL`/`_ULTIPA_URL` + the `graph` extra) and the lab Keycloak OIDC realm (`TINA4_REQUIRE_OIDC=1`), both added after the August baseline; without them `test_graph.py` (Feature 139) and the real OIDC contract test skip. The last skip was `tests/test_session_backend_failure.py` `[needs:no-dac-override]`: the suite runs as root, root holds `CAP_DAC_OVERRIDE`, so a write went straight through a 0400 file and no real `EACCES` was reachable — and as root the second `save()` returned `True`, so that skip was hiding a FAILING assertion, not merely an unrunnable one. The test now stops being root for the length of the failing write (`os.seteuid` to `nobody`; the saved uid stays 0, so a `finally` always restores it) and the kernel raises the genuine errno-13 the test asserts. Two parts of that are load-bearing: the log directory is handed to the same uid, because dropping the uid otherwise denies `Log.error` as well and the EACCES under test goes unrecorded (`_LogWriter.write` swallows `OSError` unless `TINA4_LOG_STRICT`); and the fixture root is its own 0755 `mkdtemp` rather than `tmp_path`, whose 0700 root-owned parents make every denial a directory traversal, which would pass for the wrong reason. Re-measure with `.venv/bin/python -m pytest tests/ -q` and quote the summary line, never the exit code
-- Version: 3.13.147
+- Version: 3.13.148
 
 ## Links
 
diff --git a/pyproject.toml b/pyproject.toml
index 3bafe3e3..2df34ce9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "tina4-python"
-version = "3.13.147"
+version = "3.13.148"
 description = "Tina4 Python v3 — Zero-dependency, lightweight web framework"
 authors = [
     {name = "Andre van Zuydam", email = "andrevanzuydam@gmail.com"}
diff --git a/tina4_python/__init__.py b/tina4_python/__init__.py
index 972875d4..92e1e7ef 100644
--- a/tina4_python/__init__.py
+++ b/tina4_python/__init__.py
@@ -57,7 +57,7 @@ def _resolve_version() -> str:
     #
     # test_version_constant.py now asserts this literal equals the pyproject
     # version, so the release bump cannot leave it behind again.
-    return "3.13.147"
+    return "3.13.148"
 
 
 __version__ = _resolve_version()
diff --git a/uv.lock b/uv.lock
index 53e1c730..b8b10de9 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1648,7 +1648,7 @@ wheels = [
 
 [[package]]
 name = "tina4-python"
-version = "3.13.147"
+version = "3.13.148"
 source = { editable = "." }
 
 [package.optional-dependencies]