Slack credential validation, dead config cleanup, Docker digest pinning

.dockerignore

@@ -6,7 +6,8 @@ __pycache__
 *.pyc
 *.pyo
 data/
-tests/
+# tests/ must stay in the build context: Dockerfile `test` / `test-builder` targets
+# copy them for CI in-container pytest (production stages never COPY tests into the image).
 deploy/
 coverage.xml
 .coverage

.env.example

@@ -1,72 +1,75 @@
-# Slack credentials (required)
+# --- Required credentials ---
+# Slack (required for production; tests set _PAPERSCOUT_TESTING=1 to skip validation)
 SLACK_SIGNING_SECRET=your-signing-secret
 SLACK_BOT_TOKEN=xoxb-your-bot-token
 
-# Server
+# PostgreSQL (required) — shared PostgreSQL on the host.
+# When running in Docker, use host.docker.internal to reach the host:
+DATABASE_URL=postgresql://paperscout:secret@host.docker.internal:5432/paperscout
+
+# --- Server (optional) ---
 PORT=3000
 HEALTH_PORT=8080
 # Bind address for GET /health (127.0.0.1 = localhost only). Docker Compose sets HEALTH_BIND_HOST=0.0.0.0.
 HEALTH_BIND_HOST=127.0.0.1
 
-# Database (required) — shared PostgreSQL on the host.
-# When running in Docker, use host.docker.internal to reach the host:
-DATABASE_URL=postgresql://paperscout:secret@host.docker.internal:5432/paperscout
-
-# Scheduling
+# --- Scheduling (optional) ---
 POLL_INTERVAL_MINUTES=30
 # Min sleep after an overrun cycle (poll took > poll_interval_minutes).
 POLL_OVERRUN_COOLDOWN_SECONDS=300
 ENABLE_BULK_WG21=true
-ENABLE_BULK_OPENSTD=true
 ENABLE_ISO_PROBE=true
 
-# Probe prefixes / extensions (used for gap/unknown numbers)
+# --- Probe prefixes / extensions (optional) ---
 PROBE_PREFIXES=["D","P"]
 PROBE_EXTENSIONS=[".pdf",".html"]
 
-# Frontier
+# --- Frontier (optional) ---
 FRONTIER_WINDOW_ABOVE=60
 FRONTIER_WINDOW_BELOW=30
 FRONTIER_EXPLICIT_RANGES=[]
 # Max gap between consecutive P-numbers before treating a number as an outlier
 # (filters pre-assigned far-future numbers like P5000 from the frontier).
 FRONTIER_GAP_THRESHOLD=50
 
-# Hot probing (every poll cycle)
+# --- Hot probing (optional) ---
 # Papers with a date within this many months are probed every 30 min.
 HOT_LOOKBACK_MONTHS=6
 # Revisions ahead of the known latest to probe for hot papers.
 HOT_REVISION_DEPTH=2
 
-# Cold probing (distributed across cold_cycle_divisor cycles ≈ once per day)
+# --- Cold probing (optional) ---
 COLD_REVISION_DEPTH=1
 # 48 × 30 min = 24 h; every P-number gets probed once within this window.
 COLD_CYCLE_DIVISOR=48
 
 # Gap / unknown numbers (no index entry): probe R0 through this revision.
 GAP_MAX_REV=1
 
-# Timestamp-based alerting
+# --- Timestamp-based alerting (optional) ---
 # Only notify for drafts where the server's Last-Modified header is within
 # this many hours of now.  Falls back to "alert" when the header is absent.
 ALERT_MODIFIED_HOURS=24
 
-# HTTP client
+# --- HTTP client (optional) ---
 HTTP_CONCURRENCY=20
 HTTP_TIMEOUT_SECONDS=10
 HTTP_USE_HTTP2=true
 
-# Notifications
+# --- Notifications (optional) ---
+# Slack channel ID for draft notifications; empty = channel posts disabled.
 NOTIFICATION_CHANNEL=
+# Slack channel ID for ops alerts (stale poll); empty = disabled.
+OPS_ALERT_CHANNEL=
 NOTIFY_ON_FRONTIER_HIT=true
 NOTIFY_ON_ANY_DRAFT=true
 NOTIFY_ON_DP_TRANSITION=true
 
-# Storage
+# --- Storage (optional) ---
 DATA_DIR=./data
 CACHE_TTL_HOURS=1
 
-# Logging
+# --- Logging (optional) ---
 # Log level for both console and file (DEBUG|INFO|WARNING|ERROR).
 LOG_LEVEL=INFO
 LOG_RETENTION_DAYS=7

.github/workflows/ci.yml

@@ -16,7 +16,9 @@ jobs:
     name: Lockfile (uv)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -31,7 +33,9 @@ jobs:
     runs-on: ubuntu-latest
     needs: lockfile
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -61,7 +65,9 @@ jobs:
         python-version: ["3.10", "3.11", "3.12"]
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -98,7 +104,9 @@ jobs:
     runs-on: ubuntu-latest
     needs: lockfile
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7
@@ -111,3 +119,25 @@ jobs:
 
       - name: Run probe benchmark (mock HTTP)
         run: uv run pytest benchmarks/ -m benchmark -v --tb=short
+
+  docker:
+    name: Docker image (build + tests in container)
+    runs-on: ubuntu-latest
+    needs: lockfile
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
+
+      - name: Build test image
+        run: docker build --target test -t paperscout:ci .
+
+      - name: Run tests in container
+        run: |
+          docker run --rm --entrypoint python \
+            -e _PAPERSCOUT_TESTING=1 \
+            -e SLACK_BOT_TOKEN=xoxb-ci-placeholder \
+            -e SLACK_SIGNING_SECRET=ci-placeholder-secret \
+            -e COVERAGE_FILE=/tmp/.coverage \
+            paperscout:ci \
+            -m pytest tests/ -q --cov=paperscout --cov-fail-under=90

CONTRIBUTING.md

@@ -51,6 +51,41 @@ Runtime and dev dependencies are pinned in **`uv.lock`**, generated from [`pypro
 
 **To verify locally before pushing:** `uv lock --check`
 
+### Docker image rebuild
+
+Production images install from [`uv.lock`](uv.lock) via `uv sync --frozen` in the multi-stage [`Dockerfile`](Dockerfile) (not a floating `pip install .`). The base `python:3.12-slim` image is pinned by digest in the Dockerfile.
+
+**After changing dependencies** (`pyproject.toml` / `uv.lock`):
+
+1. Commit the updated lockfile.
+2. Rebuild: `docker compose build --no-cache` or `docker build --target production -t paperscout:production .`
+
+**When upgrading the Python base image:**
+
+```bash
+docker pull python:3.12-slim
+docker inspect --format='{{index .RepoDigests 0}}' python:3.12-slim
+```
+
+Update both `FROM` lines in the Dockerfile with the new digest, then rebuild.
+
+**Verify tests inside the image** (no live Postgres required):
+
+```bash
+docker build --target test -t paperscout:test .
+docker run --rm --entrypoint python \
+  -e _PAPERSCOUT_TESTING=1 \
+  -e SLACK_BOT_TOKEN=xoxb-test \
+  -e SLACK_SIGNING_SECRET=test-secret \
+  -e COVERAGE_FILE=/tmp/.coverage \
+  paperscout:test \
+  -m pytest tests/ -q --cov=paperscout --cov-fail-under=90
+```
+
+Production deploys use the default image target (runtime only, no dev dependencies).
+
+See also [deploy/SERVER_SETUP.md](deploy/SERVER_SETUP.md) for operator rebuild steps on the server.
+
 ### Tests and coverage
 
 ```bash

Dockerfile

@@ -1,5 +1,6 @@
 # Reproducible install: dependency graph from uv.lock (--frozen) with bytecode compile.
-FROM python:3.12-slim AS builder
+# Update python digest when intentionally upgrading the base image (see CONTRIBUTING.md).
+FROM python:3.12-slim@sha256:401f6e1a67dad31a1bd78e9ad22d0ee0a3b52154e6bd30e90be696bb6a3d7461 AS builder
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         gcc libpq-dev \
@@ -14,8 +15,13 @@ COPY src/ src/
 ENV UV_COMPILE_BYTECODE=1
 RUN uv sync --frozen --no-dev --no-editable
 
+# Dev deps for CI in-container pytest (target: test).
+FROM builder AS test-builder
+COPY tests/ tests/
+RUN uv sync --frozen --extra dev --no-editable
 
-FROM python:3.12-slim
+
+FROM python:3.12-slim@sha256:401f6e1a67dad31a1bd78e9ad22d0ee0a3b52154e6bd30e90be696bb6a3d7461 AS runtime
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
         libpq5 \
@@ -37,3 +43,20 @@ USER paperscout
 EXPOSE 3000 8080
 
 ENTRYPOINT ["python", "-m", "paperscout"]
+
+
+FROM runtime AS test
+
+USER root
+COPY --from=test-builder /build/.venv /app/.venv
+COPY --from=test-builder /build/tests /app/tests
+# pytest / coverage read [tool.pytest] and [tool.coverage] from pyproject.toml
+COPY --from=test-builder /build/pyproject.toml /app/pyproject.toml
+RUN chown -R paperscout:paperscout /app
+USER paperscout
+ENV COVERAGE_FILE=/tmp/.coverage
+# CI runs pytest via `docker run … python -m pytest`; do not inherit paperscout ENTRYPOINT.
+ENTRYPOINT []
+
+# Default image for production (must remain the final stage).
+FROM runtime AS production

README.md

@@ -242,7 +242,6 @@ All parameters are configurable via environment variables or a `.env` file. See
 | `POLL_INTERVAL_MINUTES`         | `30`    | Main polling cycle interval                                                                                         |
 | `POLL_OVERRUN_COOLDOWN_SECONDS` | `300`   | Minimum sleep after a poll cycle that overran the interval (avoids tight loops when work or errors stretch a cycle) |
 | `ENABLE_BULK_WG21`              | `true`  | Fetch wg21.link/index.json each cycle                                                                               |
-| `ENABLE_BULK_OPENSTD`           | `true`  | Reserved for open-std.org scraping (not yet scheduled)                                                              |
 | `ENABLE_ISO_PROBE`              | `true`  | Run isocpp.org HEAD probing each cycle                                                                              |
 
 ### Probe Prefixes / Extensions

deploy/SERVER_SETUP.md

@@ -226,6 +226,12 @@ curl -sf http://localhost:9101/health | python3 -m json.tool
 docker compose logs -f paperscout
 ```
 
+### Rebuilding after updates
+
+Production deploys typically run `git pull` followed by `docker compose up -d --build paperscout` (see CD workflow). Dependencies are frozen in `uv.lock` and installed with `uv sync --frozen` during the image build; the base Python image is digest-pinned in the Dockerfile.
+
+When upgrading dependencies or the base image locally, see **Docker image rebuild** in [CONTRIBUTING.md](../CONTRIBUTING.md).
+
 ### Example: staging-style host
 
 If you use a **separate** staging deployment (second clone path and GitHub Environment `staging`), typical placeholders are:

docker-compose.yml

@@ -1,6 +1,9 @@
+# Image built from digest-pinned Dockerfile + frozen uv.lock (see CONTRIBUTING.md).
 services:
   paperscout:
-    build: .
+    build:
+      context: .
+      target: production
     ports:
       - "127.0.0.1:9100:3000"
       - "127.0.0.1:9101:8080"

docs/handoff.md

@@ -49,7 +49,7 @@ Outbound Slack messages go through a **background queue** (see [`scout.py`](../s
 
 ## Open TODOs and deferred items
 
-- **`ENABLE_BULK_OPENSTD` / open-std.org** — Code paths exist in [`sources.py`](../src/paperscout/sources.py); bulk open-std scheduling is **not** integrated into the main poll loop yet (README notes “not yet scheduled”).
+- **open-std.org bulk fetch** — Code paths exist in [`sources.py`](../src/paperscout/sources.py); bulk open-std scheduling is **not** integrated into the main poll loop yet (no env toggle).
 - **Eval / roadmap items** — If your org keeps a separate eval or ticket backlog, link it here; this repo does not ship a frozen “eval” document.
 
 ## Related documents

docs/onboarding.md

@@ -147,7 +147,6 @@ Every key from [`.env.example`](../.env.example) is listed below. Names in `.env
 | `POLL_INTERVAL_MINUTES`         | `30`    | Target wall-clock spacing between poll cycles (see [Scheduling](#scheduling-asyncio-loop) below).                       |
 | `POLL_OVERRUN_COOLDOWN_SECONDS` | `300`   | **Minimum** sleep after any cycle that ran longer than one interval — avoids hammering the network if a cycle overruns. |
 | `ENABLE_BULK_WG21`              | `true`  | Fetch and parse wg21.link index each cycle when enabled.                                                                |
-| `ENABLE_BULK_OPENSTD`           | `true`  | Reserved for open-std.org bulk fetch (not yet wired into the scheduler).                                                |
 | `ENABLE_ISO_PROBE`              | `true`  | Run isocpp.org HEAD probing each cycle when enabled.                                                                    |
 
 ### Probe prefixes / extensions

src/paperscout/__main__.py

@@ -5,7 +5,6 @@
 import asyncio
 import logging
 import logging.handlers
-import os
 import sys
 import threading
 from datetime import datetime, timezone
@@ -94,16 +93,6 @@ async def _async_main() -> None:
         log.error("DATABASE_URL is not set — cannot start")
         sys.exit(1)
 
-    if os.environ.get("_PAPERSCOUT_TESTING") != "1" and (
-        not (settings.slack_bot_token or "").strip()
-        or not (settings.slack_signing_secret or "").strip()
-    ):
-        log.error(
-            "Slack is not configured: SLACK_BOT_TOKEN and SLACK_SIGNING_SECRET must be "
-            "non-empty — cannot start"
-        )
-        sys.exit(1)
-
     launch_time = datetime.now(timezone.utc)
 
     pool = init_pool(settings.database_url)

src/paperscout/config.py

@@ -34,7 +34,6 @@ class Settings(BaseSettings):
     # poll_interval_minutes).  Acts as a short cooldown before the next cycle.
     poll_overrun_cooldown_seconds: int = Field(default=300, ge=1)  # 5 min
     enable_bulk_wg21: bool = True
-    enable_bulk_openstd: bool = True
     enable_iso_probe: bool = True
 
     # -- Paper prefixes / extensions (globals used for gap/unknown numbers) --

src/paperscout/db.py

@@ -8,9 +8,6 @@
 
 log = logging.getLogger(__name__)
 
-# Module-level pool; set by __main__ before anything else runs.
-pool: pg_pool.ThreadedConnectionPool | None = None
-
 _DDL = """
 CREATE TABLE IF NOT EXISTS paper_cache (
     key         TEXT PRIMARY KEY,

tests/conftest.py

@@ -217,7 +217,6 @@ def make_test_settings(**overrides) -> Settings:
         poll_interval_minutes=30,
         poll_overrun_cooldown_seconds=300,
         enable_bulk_wg21=True,
-        enable_bulk_openstd=True,
         enable_iso_probe=True,
         probe_prefixes=["D", "P"],
         probe_extensions=[".pdf"],