From 6da874b2e664fef9af2a490ec7c5f87234eb808f Mon Sep 17 00:00:00 2001
From: "m2 (AI Agent)" <m2@machinemachine.ai>
Date: Thu, 14 May 2026 16:36:00 +0200
Subject: [PATCH] =?UTF-8?q?Initial=20commit=20=E2=80=94=20phase=201=20+=20?=
 =?UTF-8?q?2=20of=20artenschutz-digest=20concept?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Phase 1: router skeleton + Qdrant read path
- FastAPI app with /health, /search/generic, /ingest endpoints
- Qdrant reader (hybrid dense+sparse w/ RRF, plus payload scroll)
- BGE-M3 TEI client for query-side embedding
- memory-api client proxying writes to /memory/store (m2-memory untouched)
- Pydantic Fact + Exemplar payloads, discriminated by `kind`
- Dockerfile + docker-compose joining the coolify Docker network

Phase 2: authoritative-source ingest pipeline
- PDF text extraction + paragraph-aware (§ N) and size chunkers
- Loaders for bnatschg, mhbasp, biotopwertliste, state-<slug>
- CLI: artenschutz-ingest --source <name> [--states ...] [--dry-run]
- Helper script to fetch BNatSchG from gesetze-im-internet.de
- End-to-end smoke script (scripts/smoke.sh) for Coolify validation

22/22 unit tests pass. Real-world dry-runs verified against mhbasp Anhang 4,
biotopwertlisteNEU and Berlin Kartierstandards PDFs from GST-DATA.

See COOLIFY-DEPLOY.md for staging deploy + smoke procedure.
---
 .env.example                                  |  22 +++
 .gitignore                                    |  19 +++
 COOLIFY-DEPLOY.md                             | 128 ++++++++++++++++
 Dockerfile                                    |  25 +++
 README.md                                     |  67 +++++++++
 docker-compose.yml                            |  24 +++
 pyproject.toml                                |  42 ++++++
 scripts/fetch_bnatschg.py                     | 112 ++++++++++++++
 scripts/smoke.sh                              |  72 +++++++++
 sources/README.md                             |  22 +++
 sources/biotopwertliste/.gitkeep              |   0
 sources/bnatschg/.gitkeep                     |   0
 sources/mhbasp/.gitkeep                       |   0
 sources/states/baden_wuerttemberg/.gitkeep    |   0
 sources/states/bayern/.gitkeep                |   0
 sources/states/berlin/.gitkeep                |   0
 sources/states/brandenburg/.gitkeep           |   0
 sources/states/sachsen/.gitkeep               |   0
 src/artenschutz_router/__init__.py            |   3 +
 src/artenschutz_router/clients/__init__.py    |   1 +
 src/artenschutz_router/clients/bge.py         |  74 +++++++++
 src/artenschutz_router/clients/memory_api.py  |  57 +++++++
 src/artenschutz_router/clients/qdrant.py      | 112 ++++++++++++++
 src/artenschutz_router/config.py              |  29 ++++
 src/artenschutz_router/ingest/__init__.py     |   1 +
 .../ingest/authoritative/__init__.py          |  10 ++
 .../ingest/authoritative/base.py              |  30 ++++
 .../ingest/authoritative/biotopwertliste.py   |  53 +++++++
 .../ingest/authoritative/bnatschg.py          |  58 +++++++
 .../ingest/authoritative/mhbasp.py            |  49 ++++++
 .../ingest/authoritative/state_docs.py        |  54 +++++++
 src/artenschutz_router/ingest/chunker.py      |  93 ++++++++++++
 src/artenschutz_router/ingest/cli.py          | 136 +++++++++++++++++
 src/artenschutz_router/ingest/pdf_text.py     |  27 ++++
 src/artenschutz_router/main.py                |  93 ++++++++++++
 src/artenschutz_router/models.py              | 142 ++++++++++++++++++
 src/artenschutz_router/routes/__init__.py     |   1 +
 src/artenschutz_router/routes/ingest.py       |  43 ++++++
 src/artenschutz_router/routes/search.py       |  62 ++++++++
 tests/__init__.py                             |   0
 tests/test_app.py                             |  30 ++++
 tests/test_bnatschg_loader.py                 |  58 +++++++
 tests/test_chunker.py                         |  50 ++++++
 tests/test_cli.py                             |  49 ++++++
 tests/test_filter_builder.py                  |  30 ++++
 tests/test_models.py                          |  91 +++++++++++
 46 files changed, 1969 insertions(+)
 create mode 100644 .env.example
 create mode 100644 .gitignore
 create mode 100644 COOLIFY-DEPLOY.md
 create mode 100644 Dockerfile
 create mode 100644 README.md
 create mode 100644 docker-compose.yml
 create mode 100644 pyproject.toml
 create mode 100755 scripts/fetch_bnatschg.py
 create mode 100755 scripts/smoke.sh
 create mode 100644 sources/README.md
 create mode 100644 sources/biotopwertliste/.gitkeep
 create mode 100644 sources/bnatschg/.gitkeep
 create mode 100644 sources/mhbasp/.gitkeep
 create mode 100644 sources/states/baden_wuerttemberg/.gitkeep
 create mode 100644 sources/states/bayern/.gitkeep
 create mode 100644 sources/states/berlin/.gitkeep
 create mode 100644 sources/states/brandenburg/.gitkeep
 create mode 100644 sources/states/sachsen/.gitkeep
 create mode 100644 src/artenschutz_router/__init__.py
 create mode 100644 src/artenschutz_router/clients/__init__.py
 create mode 100644 src/artenschutz_router/clients/bge.py
 create mode 100644 src/artenschutz_router/clients/memory_api.py
 create mode 100644 src/artenschutz_router/clients/qdrant.py
 create mode 100644 src/artenschutz_router/config.py
 create mode 100644 src/artenschutz_router/ingest/__init__.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/__init__.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/base.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/biotopwertliste.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/bnatschg.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/mhbasp.py
 create mode 100644 src/artenschutz_router/ingest/authoritative/state_docs.py
 create mode 100644 src/artenschutz_router/ingest/chunker.py
 create mode 100644 src/artenschutz_router/ingest/cli.py
 create mode 100644 src/artenschutz_router/ingest/pdf_text.py
 create mode 100644 src/artenschutz_router/main.py
 create mode 100644 src/artenschutz_router/models.py
 create mode 100644 src/artenschutz_router/routes/__init__.py
 create mode 100644 src/artenschutz_router/routes/ingest.py
 create mode 100644 src/artenschutz_router/routes/search.py
 create mode 100644 tests/__init__.py
 create mode 100644 tests/test_app.py
 create mode 100644 tests/test_bnatschg_loader.py
 create mode 100644 tests/test_chunker.py
 create mode 100644 tests/test_cli.py
 create mode 100644 tests/test_filter_builder.py
 create mode 100644 tests/test_models.py

diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..ffaa928
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,22 @@
+# Qdrant + BGE-M3 — same services agent.memory.system uses.
+# In the Coolify Docker network these resolve by container name.
+# For local dev pointed at a remote stack, use container IPs from
+#   docker inspect or memory-api's resolved endpoints.
+QDRANT_URL=http://memory-qdrant:6333
+QDRANT_COLLECTION=agent_memory
+BGE_TEI_URL=http://memory-embeddings:8000
+
+# memory-api is only used for the WRITE path (/ingest → /memory/store).
+# Reads go directly to Qdrant.
+MEMORY_API_URL=http://memory-api:8000
+
+# agent_id partition in Qdrant. Default scopes by client; override per deploy.
+# Examples:
+#   gruenstifter        — production client
+#   gruenstifter_staging — same client, staging env (cleanly deletable)
+ARTENSCHUTZ_AGENT_ID=gruenstifter
+
+# Service binding
+ROUTER_HOST=0.0.0.0
+ROUTER_PORT=8080
+LOG_LEVEL=INFO
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..640efa8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,19 @@
+__pycache__/
+*.pyc
+*.pyo
+.pytest_cache/
+.ruff_cache/
+.venv/
+venv/
+.env
+*.egg-info/
+build/
+dist/
+
+# Local source dumps (real authoritative sources are large; keep .gitkeep markers)
+sources/**/*.pdf
+sources/**/*.docx
+sources/**/*.txt
+sources/**/*.html
+!sources/**/.gitkeep
+!sources/**/README.md
diff --git a/COOLIFY-DEPLOY.md b/COOLIFY-DEPLOY.md
new file mode 100644
index 0000000..5217cd0
--- /dev/null
+++ b/COOLIFY-DEPLOY.md
@@ -0,0 +1,128 @@
+# Coolify staging deploy — artenschutz-router
+
+Goal: stand up the router on Coolify staging, in the same Docker network as
+`agent.memory.system`, so it can reach `memory-qdrant`, `memory-embeddings`,
+and `memory-api` by container name. Then run an end-to-end smoke ingest +
+search against real data.
+
+## Pre-flight
+
+You should already have on staging Coolify:
+
+- A running `agent.memory.system` (memory-api + memory-qdrant + memory-embeddings)
+- The Docker network name those services live on (probably `coolify` — check
+  `docker network ls` on the staging host)
+
+Note down:
+
+| Setting | Value (example) |
+|---|---|
+| Coolify project | `gruenstifter-staging` |
+| Docker network | `coolify` |
+| memory-api container name | `memory-api-<id>` |
+| memory-qdrant container name | `memory-qdrant-<id>` |
+| memory-embeddings container name | `memory-embeddings-<id>` |
+
+> The *full* container names include Coolify's stack hash suffix. The
+> compose file uses the short service names (`memory-api`, etc.) which work
+> when the router is on the same Coolify-managed network — Coolify creates
+> service-name aliases. If they don't resolve, fall back to container IPs
+> via `docker inspect`.
+
+## Path A — Push to forgejo, let Coolify auto-deploy (preferred)
+
+```bash
+cd /home/m2/artenschutz-router
+git init -b main
+git add .
+git commit -m "Initial commit — phase 1 + 2"
+git remote add origin <forgejo-url>:gruenstifter/artenschutz-router.git
+git push -u origin main
+```
+
+In Coolify staging:
+
+1. New Resource → **Application** → **Public Git Repository** (or Private,
+   add the SSH key)
+2. Source: the forgejo URL above
+3. Build Pack: **Dockerfile**
+4. Set environment variables:
+   ```
+   QDRANT_URL=http://memory-qdrant:6333
+   QDRANT_COLLECTION=agent_memory
+   BGE_TEI_URL=http://memory-embeddings:8000
+   MEMORY_API_URL=http://memory-api:8000
+   ARTENSCHUTZ_AGENT_ID=gruenstifter_staging
+   ROUTER_PORT=8080
+   LOG_LEVEL=INFO
+   ```
+   `gruenstifter_staging` keeps smoke data cleanly separable from any future
+   production write.
+5. Network: join the same network as `agent.memory.system` (usually `coolify`).
+6. Port: 8080 (no public exposure needed for smoke — internal-only is fine).
+7. Deploy.
+
+## Path B — Docker Compose on the Coolify host
+
+If you'd rather not push to forgejo yet:
+
+```bash
+# On the Coolify host (or via SSH):
+scp -r /home/m2/artenschutz-router  coolify-host:/opt/coolify-apps/
+ssh coolify-host
+cd /opt/coolify-apps/artenschutz-router
+cp .env.example .env
+# Edit .env to set ARTENSCHUTZ_AGENT_ID=gruenstifter_staging
+docker compose build
+docker compose up -d
+docker compose logs -f artenschutz-router
+```
+
+This bypasses Coolify's UI but uses the same `coolify` external network the
+memory stack joins.
+
+## Verify it's up
+
+From any shell on the Coolify host:
+
+```bash
+docker exec artenschutz-router curl -sS http://localhost:8080/health
+# expect: {"status":"ok","qdrant":true,"bge":true,"memory_api":true}
+```
+
+`status: "degraded"` with one of the three `false` means that service isn't
+reachable from inside the router's network namespace — fix container names /
+network attachment before continuing.
+
+## End-to-end smoke (uses the test data already symlinked in `sources/`)
+
+```bash
+# 1. Fetch BNatSchG into the container's sources/bnatschg/ if not already.
+docker exec artenschutz-router python scripts/fetch_bnatschg.py
+
+# 2. Run the smoke (ingests small batches + queries them back).
+docker exec artenschutz-router bash scripts/smoke.sh
+```
+
+The smoke script ingests ~5 records per source, then runs three searches:
+
+- Hybrid query `"Fledermäuse Kartierung"` filtered to `fact_type=method`
+- Hybrid query `"besonders geschützte Arten"` filtered to `fact_type=legal`
+- Payload-only scroll on `scope.states=BE` to verify state filtering
+
+Expected: each search returns ≥1 hit. If hybrid returns 0 hits but scroll
+works, BGE-M3 embedding is failing — check the logs.
+
+## Cleanup (after smoke)
+
+Drop the staging agent_id from Qdrant:
+
+```bash
+docker exec memory-qdrant-<id> curl -X POST \
+  http://localhost:6333/collections/agent_memory/points/delete \
+  -H 'Content-Type: application/json' \
+  -d '{"filter":{"must":[{"key":"agent_id","match":{"value":"gruenstifter_staging"}}]}}'
+```
+
+This wipes every point we wrote under the staging agent_id. Nothing else is
+affected because partition isolation is by `agent_id`.
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..971c5e3
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,25 @@
+FROM python:3.11-slim
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PIP_NO_CACHE_DIR=1
+
+# curl: for smoke.sh + /health probes.
+RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+
+COPY pyproject.toml ./
+COPY src ./src
+COPY scripts ./scripts
+COPY sources ./sources
+
+RUN pip install --upgrade pip && pip install .
+
+# sources/ is bind-mountable so an operator can drop files (esp. bnatschg.txt)
+# without a rebuild.
+VOLUME ["/app/sources"]
+
+EXPOSE 8080
+
+CMD ["uvicorn", "artenschutz_router.main:app", "--host", "0.0.0.0", "--port", "8080"]
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..dd1cb07
--- /dev/null
+++ b/README.md
@@ -0,0 +1,67 @@
+# artenschutz-router
+
+Sidecar service for Artenschutzgutachten domain queries against
+`agent.memory.system`. **m2-memory stays untouched.**
+
+- **Writes** proxy memory-api `/memory/store` — the existing endpoint accepts
+  arbitrary `metadata: dict`, so our Fact / Exemplar payloads slot in.
+- **Reads** go directly to Qdrant for rich payload-filtered hybrid queries
+  (dense + sparse via the existing BGE-M3 TEI service).
+
+See `.planning/notes/artenschutz-digest-concept.md` in `GST-DATA` for the
+draft concept that birthed this.
+
+## Endpoints
+
+| Method | Path | Purpose |
+|---|---|---|
+| `GET`  | `/health` | Live-probe Qdrant, BGE-M3, memory-api |
+| `POST` | `/search/generic` | Hybrid search (or scroll if no `query`); arbitrary payload filters |
+| `POST` | `/ingest` | Push a Fact or Exemplar record |
+
+Domain-specific endpoints (`/facts/search`, `/exemplar/search`,
+`/mitigation/search`) are deferred to a later phase — they will be thin
+wrappers over `/search/generic`.
+
+## Quick start (local dev)
+
+```bash
+cp .env.example .env
+# Edit .env to point QDRANT_URL / BGE_TEI_URL / MEMORY_API_URL at your stack
+docker compose up --build
+curl http://localhost:8080/health
+```
+
+If you're targeting the production Coolify memory stack, leave the default
+container-name URLs and ensure the `coolify` Docker network is joined.
+
+## Running ingest
+
+```bash
+# After you've placed authoritative source files into sources/...
+artenschutz-ingest --source bnatschg --router-url http://localhost:8080
+artenschutz-ingest --source mhbasp --router-url http://localhost:8080
+artenschutz-ingest --source biotopwertliste --router-url http://localhost:8080
+artenschutz-ingest --source state-berlin --router-url http://localhost:8080
+```
+
+See `sources/README.md` for which files each source expects.
+
+## Tests
+
+```bash
+pip install -e .[dev]
+pytest
+```
+
+## Architecture
+
+```
+m2-gpt agents
+   ↓
+artenschutz-router (this repo)
+   ├─ /ingest        ─→ memory-api /memory/store (unchanged)
+   └─ /search/generic ─→ Qdrant /points/query + BGE-M3 TEI /embed[_sparse]
+                            ↓
+                       agent_memory collection (Qdrant)
+```
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..fc50ea4
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,24 @@
+# Local dev compose. Joins the existing Coolify "coolify" network so it can
+# resolve memory-qdrant / memory-embeddings / memory-api by container name.
+# If those services aren't reachable, override the *_URL env vars in .env.
+
+services:
+  artenschutz-router:
+    build: .
+    container_name: artenschutz-router
+    env_file:
+      - .env
+    ports:
+      - "8080:8080"
+    networks:
+      - coolify
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; urllib.request.urlopen('http://localhost:8080/health')"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+
+networks:
+  coolify:
+    external: true
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b8e0409
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,42 @@
+[project]
+name = "artenschutz-router"
+version = "0.1.0"
+description = "Sidecar router for Artenschutz domain queries against agent.memory.system"
+requires-python = ">=3.11"
+readme = "README.md"
+
+dependencies = [
+    "fastapi>=0.110",
+    "uvicorn[standard]>=0.27",
+    "pydantic>=2.6",
+    "pydantic-settings>=2.2",
+    "httpx>=0.27",
+    "qdrant-client>=1.9",
+    "pypdf>=4.0",
+    "python-dateutil>=2.9",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0",
+    "pytest-asyncio>=0.23",
+    "ruff>=0.4",
+]
+
+[project.scripts]
+artenschutz-ingest = "artenschutz_router.ingest.cli:main"
+
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py311"
diff --git a/scripts/fetch_bnatschg.py b/scripts/fetch_bnatschg.py
new file mode 100755
index 0000000..4aeca7b
--- /dev/null
+++ b/scripts/fetch_bnatschg.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+"""Fetch the consolidated text of BNatSchG §44 and §45b from
+gesetze-im-internet.de and emit a plain-text file suitable for the
+bnatschg ingest loader.
+
+Usage:
+    python scripts/fetch_bnatschg.py [--out sources/bnatschg/bnatschg.txt]
+
+The output uses one heading line per section ("§ N ..." or "Anlage N ...")
+exactly as the bnatschg loader's paragraph splitter expects.
+
+Best-effort HTML scrape. If gesetze-im-internet.de changes layout, paste
+text manually instead (see sources/README.md).
+"""
+from __future__ import annotations
+
+import argparse
+import re
+import sys
+from html.parser import HTMLParser
+from pathlib import Path
+from urllib.request import Request, urlopen
+
+# §s most relevant for Artenschutzgutachten. Add more as needed.
+SECTIONS = [
+    ("§ 44 Vorschriften für besonders geschützte und bestimmte andere Tier- und Pflanzenarten",
+     "https://www.gesetze-im-internet.de/bnatschg_2009/__44.html"),
+    ("§ 45 Ausnahmen; Ermächtigung zum Erlass von Rechtsverordnungen",
+     "https://www.gesetze-im-internet.de/bnatschg_2009/__45.html"),
+    ("§ 45b Schutz wild lebender Vogelarten bei der Errichtung und dem Betrieb von Windenergieanlagen an Land",
+     "https://www.gesetze-im-internet.de/bnatschg_2009/__45b.html"),
+    ("Anlage 1 (zu § 45b Absatz 1 bis 5) Liste der bei der Errichtung und dem Betrieb von Windenergieanlagen an Land kollisionsgefährdeten Brutvogelarten",
+     "https://www.gesetze-im-internet.de/bnatschg_2009/anlage_1.html"),
+]
+
+
+class TextExtractor(HTMLParser):
+    def __init__(self) -> None:
+        super().__init__()
+        self._buf: list[str] = []
+        self._skip = 0  # depth of <script>/<style>
+
+    def handle_starttag(self, tag: str, attrs: list[tuple[str, str | None]]) -> None:
+        if tag in {"script", "style"}:
+            self._skip += 1
+        elif tag in {"br", "p", "div", "li", "tr"}:
+            self._buf.append("\n")
+
+    def handle_endtag(self, tag: str) -> None:
+        if tag in {"script", "style"} and self._skip:
+            self._skip -= 1
+        elif tag in {"p", "div", "li", "tr"}:
+            self._buf.append("\n")
+
+    def handle_data(self, data: str) -> None:
+        if not self._skip:
+            self._buf.append(data)
+
+    def value(self) -> str:
+        raw = "".join(self._buf)
+        # Collapse excess blank lines while preserving paragraph breaks.
+        raw = re.sub(r"[ \t]+", " ", raw)
+        raw = re.sub(r"\n{3,}", "\n\n", raw)
+        return raw.strip()
+
+
+def fetch(url: str, timeout: float = 30.0) -> str:
+    req = Request(url, headers={"User-Agent": "artenschutz-router/0.1 (+fetch_bnatschg)"})
+    with urlopen(req, timeout=timeout) as resp:
+        raw_bytes = resp.read()
+    # gesetze-im-internet.de serves ISO-8859-1; sniff from header if present.
+    charset = resp.headers.get_content_charset() or "iso-8859-1"
+    return raw_bytes.decode(charset, errors="replace")
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(prog="fetch_bnatschg")
+    parser.add_argument(
+        "--out",
+        type=Path,
+        default=Path("sources/bnatschg/bnatschg.txt"),
+        help="Output path (default: %(default)s)",
+    )
+    args = parser.parse_args(argv)
+    args.out.parent.mkdir(parents=True, exist_ok=True)
+
+    chunks: list[str] = []
+    for heading, url in SECTIONS:
+        print(f"  fetching {heading.split('(')[0].strip()} ...", file=sys.stderr)
+        try:
+            html = fetch(url)
+        except Exception as exc:  # noqa: BLE001
+            print(f"    FAILED ({exc}) — skipping", file=sys.stderr)
+            continue
+        extractor = TextExtractor()
+        extractor.feed(html)
+        body = extractor.value()
+        # Anchor each section with the expected heading on its own line so the
+        # paragraph chunker recognises it.
+        chunks.append(f"{heading}\n\n{body}\n")
+
+    if not chunks:
+        print("No sections fetched — refusing to write empty output", file=sys.stderr)
+        return 2
+
+    args.out.write_text("\n\n".join(chunks), encoding="utf-8")
+    print(f"Wrote {args.out} ({sum(len(c) for c in chunks):,} chars)", file=sys.stderr)
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/scripts/smoke.sh b/scripts/smoke.sh
new file mode 100755
index 0000000..7ddd11e
--- /dev/null
+++ b/scripts/smoke.sh
@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+# End-to-end smoke for artenschutz-router against the live memory stack.
+# Runs from inside the container; ROUTER_URL defaults to localhost:8080.
+set -euo pipefail
+
+ROUTER_URL="${ROUTER_URL:-http://localhost:8080}"
+
+step() { printf '\n\033[1;36m== %s ==\033[0m\n' "$*"; }
+pass() { printf '\033[1;32m  ✓ %s\033[0m\n' "$*"; }
+fail() { printf '\033[1;31m  ✗ %s\033[0m\n' "$*"; exit 1; }
+
+step "1/5  health"
+health=$(curl -sS "$ROUTER_URL/health")
+echo "  $health"
+echo "$health" | grep -q '"status":"ok"' || fail "health is not ok — fix services first"
+pass "router can reach Qdrant + BGE-M3 + memory-api"
+
+ingest_source() {
+    local source="$1" ; shift
+    local limit="${1:-5}"
+    step "ingest --source $source --limit $limit"
+    python -m artenschutz_router.ingest.cli \
+        --source "$source" \
+        --router-url "$ROUTER_URL" \
+        --limit "$limit" "$@" \
+        2>&1 | tail -5
+}
+
+step "2/5  fetch BNatSchG if missing"
+if [ ! -s sources/bnatschg/bnatschg.txt ]; then
+    python scripts/fetch_bnatschg.py
+fi
+
+step "3/5  ingest small batches"
+ingest_source bnatschg 5
+ingest_source mhbasp 5
+ingest_source biotopwertliste 3 --states BY
+ingest_source state-berlin 5
+
+step "4/5  search — hybrid, fact_type=method"
+result=$(curl -sS -X POST "$ROUTER_URL/search/generic" \
+    -H 'Content-Type: application/json' \
+    -d '{"query":"Fledermäuse Kartierung","metadata_filter":{"fact_type":"method"},"limit":3}')
+hits=$(echo "$result" | python -c "import sys,json; print(len(json.load(sys.stdin)['hits']))")
+echo "  hits: $hits"
+[ "$hits" -ge 1 ] || fail "hybrid search returned 0 hits — check BGE-M3"
+pass "hybrid retrieval works"
+
+step "4b/5  search — hybrid, fact_type=legal"
+result=$(curl -sS -X POST "$ROUTER_URL/search/generic" \
+    -H 'Content-Type: application/json' \
+    -d '{"query":"besonders geschützte Arten","metadata_filter":{"fact_type":"legal"},"limit":3}')
+hits=$(echo "$result" | python -c "import sys,json; print(len(json.load(sys.stdin)['hits']))")
+echo "  hits: $hits"
+[ "$hits" -ge 1 ] || fail "legal hybrid search returned 0 hits"
+pass "BNatSchG indexed and queryable"
+
+step "5/5  scroll — scope.states contains BE"
+result=$(curl -sS -X POST "$ROUTER_URL/search/generic" \
+    -H 'Content-Type: application/json' \
+    -d '{"metadata_filter":{"scope.states":["BE"]},"limit":3}')
+hits=$(echo "$result" | python -c "import sys,json; print(len(json.load(sys.stdin)['hits']))")
+echo "  hits: $hits"
+[ "$hits" -ge 1 ] || fail "scope.states=BE scroll returned 0 hits — Berlin ingest missed?"
+pass "payload filtering on nested keys works"
+
+printf '\n\033[1;32mALL SMOKE STEPS PASSED\033[0m\n'
+echo
+echo "To clean up the staging data later:"
+echo "  curl -X POST <qdrant>:6333/collections/agent_memory/points/delete \\"
+echo "    -H 'Content-Type: application/json' \\"
+echo "    -d '{\"filter\":{\"must\":[{\"key\":\"agent_id\",\"match\":{\"value\":\"gruenstifter_staging\"}}]}}'"
diff --git a/sources/README.md b/sources/README.md
new file mode 100644
index 0000000..c3c329f
--- /dev/null
+++ b/sources/README.md
@@ -0,0 +1,22 @@
+# Authoritative source files
+
+The ingest pipeline reads from this tree. Files are git-ignored (large + may
+have licensing constraints) — keep originals here on each operator's machine.
+
+| Subdir | Expected files | Notes |
+|---|---|---|
+| `bnatschg/` | `bnatschg.txt` (current consolidated text of §44, §45b, Anlagen) | Fetch from <https://www.gesetze-im-internet.de/bnatschg_2009/> — paste as UTF-8 plain text. One `§ N ...` per heading line. Cross-reference: a `.webloc` link to <https://www.buzer.de/Anlage_1_BNatSchG.htm> already lives in `GST-DATA/xx_GS_VORLAGEN_FachGA/`. |
+| `mhbasp/` | `mhbasp_anhang4.pdf` | "Methodische Hinweise und Behandlungsempfehlungen ASP" Anhang 4 — species × method matrix |
+| `biotopwertliste/` | `biotopwertliste.pdf` | A biotope value list — **always state-specific**. Pass `--states BE` (or BB, BY, …) when ingesting. State-specific lists are also welcome under `states/<slug>/`; the generic slot here is for one-off cases. |
+| `states/berlin/` | One or more state-specific PDFs (Kartierstandards, methodische Hinweise) | First state implemented as proof-of-concept |
+| `states/brandenburg/`<br>`states/bayern/`<br>`states/baden_wuerttemberg/`<br>`states/sachsen/` | TODO | Add as ingest support is implemented per state |
+
+A copy of `mhbasp_anhang4_artspezifisch geeignete kartiermethoden.pdf` already
+lives under `GST-DATA/xx_GS_VORLAGEN_FachGA/`. Symlinking is fine:
+
+```bash
+ln -s "/home/m2/clients/SDJS/GST-DATA/xx_GS_VORLAGEN_FachGA/mhbasp_anhang4_artspezifisch geeignete kartiermethoden.pdf" \
+       sources/mhbasp/mhbasp_anhang4.pdf
+ln -s "/home/m2/clients/SDJS/GST-DATA/xx_GS_VORLAGEN_FachGA/biotopwertlisteNEU.pdf" \
+       sources/biotopwertliste/biotopwertliste.pdf
+```
diff --git a/sources/biotopwertliste/.gitkeep b/sources/biotopwertliste/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/bnatschg/.gitkeep b/sources/bnatschg/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/mhbasp/.gitkeep b/sources/mhbasp/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/states/baden_wuerttemberg/.gitkeep b/sources/states/baden_wuerttemberg/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/states/bayern/.gitkeep b/sources/states/bayern/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/states/berlin/.gitkeep b/sources/states/berlin/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/states/brandenburg/.gitkeep b/sources/states/brandenburg/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/sources/states/sachsen/.gitkeep b/sources/states/sachsen/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/artenschutz_router/__init__.py b/src/artenschutz_router/__init__.py
new file mode 100644
index 0000000..0ac8e84
--- /dev/null
+++ b/src/artenschutz_router/__init__.py
@@ -0,0 +1,3 @@
+"""Artenschutz-Router — sidecar service for Artenschutz domain queries."""
+
+__version__ = "0.1.0"
diff --git a/src/artenschutz_router/clients/__init__.py b/src/artenschutz_router/clients/__init__.py
new file mode 100644
index 0000000..3b166d4
--- /dev/null
+++ b/src/artenschutz_router/clients/__init__.py
@@ -0,0 +1 @@
+"""External service clients: Qdrant (direct), BGE-M3 TEI, memory-api."""
diff --git a/src/artenschutz_router/clients/bge.py b/src/artenschutz_router/clients/bge.py
new file mode 100644
index 0000000..e04e3d5
--- /dev/null
+++ b/src/artenschutz_router/clients/bge.py
@@ -0,0 +1,74 @@
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+import httpx
+
+logger = logging.getLogger(__name__)
+
+
+class BGEClient:
+    """Thin async client for the BGE-M3 TEI server.
+
+    Only exposes what the router needs for query-side embedding: dense vector
+    and sparse vector. ColBERT is left to memory-api's own pipeline if ever
+    required.
+    """
+
+    def __init__(self, base_url: str, timeout_s: float = 30.0) -> None:
+        self._base_url = base_url.rstrip("/")
+        self._client = httpx.AsyncClient(base_url=self._base_url, timeout=timeout_s)
+
+    async def close(self) -> None:
+        await self._client.aclose()
+
+    async def embed_dense(self, text: str) -> list[float]:
+        resp = await self._client.post("/embed", json={"inputs": text})
+        resp.raise_for_status()
+        data = resp.json()
+        # TEI returns list[list[float]] for batched, list[float] for single.
+        if isinstance(data, list) and data and isinstance(data[0], list):
+            return data[0]
+        return data  # type: ignore[return-value]
+
+    async def embed_sparse(self, text: str) -> dict[int, float]:
+        resp = await self._client.post("/embed_sparse", json={"inputs": text})
+        resp.raise_for_status()
+        data = resp.json()
+        # TEI returns either {"sparse": [{"index": int, "value": float}, ...]}
+        # or directly a list of those, depending on version.
+        sparse_list = data[0] if isinstance(data, list) and data and isinstance(data[0], list) else data
+        out: dict[int, float] = {}
+        for item in sparse_list:
+            if isinstance(item, dict) and "index" in item and "value" in item:
+                out[int(item["index"])] = float(item["value"])
+        return out
+
+    async def embed_hybrid(self, text: str) -> tuple[list[float], dict[int, float]]:
+        dense = await self.embed_dense(text)
+        sparse = await self.embed_sparse(text)
+        return dense, sparse
+
+
+def build_qdrant_filter(metadata_filter: dict[str, Any] | None) -> dict[str, Any] | None:
+    """Translate a flat `{key: value | [values]}` dict into a Qdrant `must` filter.
+
+    None values are skipped. List values become `match: {any: [...]}` clauses.
+    Scalar values become `match: {value: x}` clauses.
+    Supports nested keys via dotted form, e.g. `scope.states`.
+    """
+    if not metadata_filter:
+        return None
+
+    must: list[dict[str, Any]] = []
+    for key, value in metadata_filter.items():
+        if value is None:
+            continue
+        if isinstance(value, list):
+            must.append({"key": key, "match": {"any": value}})
+        else:
+            must.append({"key": key, "match": {"value": value}})
+    if not must:
+        return None
+    return {"must": must}
diff --git a/src/artenschutz_router/clients/memory_api.py b/src/artenschutz_router/clients/memory_api.py
new file mode 100644
index 0000000..1a694f5
--- /dev/null
+++ b/src/artenschutz_router/clients/memory_api.py
@@ -0,0 +1,57 @@
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+import httpx
+
+logger = logging.getLogger(__name__)
+
+
+class MemoryApiClient:
+    """Write-path proxy to agent.memory.system's /memory/store endpoint.
+
+    The router does NOT touch m2-memory source code. The fact/exemplar
+    payload travels as the free-form `metadata` dict that /memory/store
+    already accepts.
+    """
+
+    def __init__(self, base_url: str, timeout_s: float = 30.0) -> None:
+        self._base_url = base_url.rstrip("/")
+        self._client = httpx.AsyncClient(base_url=self._base_url, timeout=timeout_s)
+
+    async def close(self) -> None:
+        await self._client.aclose()
+
+    async def store(
+        self,
+        *,
+        content: str,
+        agent_id: str,
+        memory_type: str = "fact",
+        importance: float = 0.5,
+        source: str = "document",
+        entities: list[str] | None = None,
+        language: str = "de",
+        metadata: dict[str, Any] | None = None,
+    ) -> str:
+        body = {
+            "content": content,
+            "agent_id": agent_id,
+            "memory_type": memory_type,
+            "importance": importance,
+            "source": source,
+            "entities": entities or [],
+            "language": language,
+            "metadata": metadata or {},
+        }
+        resp = await self._client.post("/memory/store", json=body)
+        resp.raise_for_status()
+        return resp.json()["id"]
+
+    async def health(self) -> bool:
+        try:
+            resp = await self._client.get("/health")
+            return resp.status_code == 200
+        except httpx.HTTPError:
+            return False
diff --git a/src/artenschutz_router/clients/qdrant.py b/src/artenschutz_router/clients/qdrant.py
new file mode 100644
index 0000000..7ded094
--- /dev/null
+++ b/src/artenschutz_router/clients/qdrant.py
@@ -0,0 +1,112 @@
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from qdrant_client import AsyncQdrantClient
+from qdrant_client.http import models as qm
+
+logger = logging.getLogger(__name__)
+
+
+class QdrantReader:
+    """Read-only Qdrant wrapper for hybrid + payload-filter queries.
+
+    Writes are NOT exposed here on purpose — they go through memory-api
+    so we stay aligned with whatever ingest pipeline / dedup / vector
+    schema the canonical memory service enforces.
+    """
+
+    def __init__(self, url: str, collection: str) -> None:
+        self._client = AsyncQdrantClient(url=url, check_compatibility=False)
+        self._collection = collection
+
+    async def close(self) -> None:
+        await self._client.close()
+
+    def _to_filter(self, raw: dict[str, Any] | None) -> qm.Filter | None:
+        if not raw:
+            return None
+        must = raw.get("must", [])
+        if not must:
+            return None
+        conditions: list[qm.FieldCondition] = []
+        for clause in must:
+            key = clause["key"]
+            match = clause["match"]
+            if "any" in match:
+                conditions.append(
+                    qm.FieldCondition(key=key, match=qm.MatchAny(any=match["any"]))
+                )
+            else:
+                conditions.append(
+                    qm.FieldCondition(key=key, match=qm.MatchValue(value=match["value"]))
+                )
+        return qm.Filter(must=conditions)
+
+    async def hybrid_query(
+        self,
+        *,
+        agent_id: str,
+        dense: list[float],
+        sparse: dict[int, float],
+        metadata_filter: dict[str, Any] | None,
+        limit: int = 10,
+        prefetch_limit: int = 50,
+    ) -> list[dict[str, Any]]:
+        """Dense + sparse hybrid with RRF fusion, scoped to agent_id."""
+
+        combined: dict[str, Any] = {"must": [{"key": "agent_id", "match": {"value": agent_id}}]}
+        if metadata_filter and "must" in metadata_filter:
+            combined["must"].extend(metadata_filter["must"])
+        qfilter = self._to_filter(combined)
+
+        sparse_vec = qm.SparseVector(
+            indices=list(sparse.keys()),
+            values=list(sparse.values()),
+        )
+
+        result = await self._client.query_points(
+            collection_name=self._collection,
+            prefetch=[
+                qm.Prefetch(query=dense, using="dense", limit=prefetch_limit, filter=qfilter),
+                qm.Prefetch(query=sparse_vec, using="sparse", limit=prefetch_limit, filter=qfilter),
+            ],
+            query=qm.FusionQuery(fusion=qm.Fusion.RRF),
+            query_filter=qfilter,
+            limit=limit,
+            with_payload=True,
+            with_vectors=False,
+        )
+        return [self._format_point(p) for p in result.points]
+
+    async def scroll(
+        self,
+        *,
+        agent_id: str,
+        metadata_filter: dict[str, Any] | None,
+        limit: int = 100,
+    ) -> list[dict[str, Any]]:
+        """Pure payload-filter retrieval (no vector ranking)."""
+
+        combined: dict[str, Any] = {"must": [{"key": "agent_id", "match": {"value": agent_id}}]}
+        if metadata_filter and "must" in metadata_filter:
+            combined["must"].extend(metadata_filter["must"])
+        qfilter = self._to_filter(combined)
+
+        points, _next = await self._client.scroll(
+            collection_name=self._collection,
+            scroll_filter=qfilter,
+            limit=limit,
+            with_payload=True,
+            with_vectors=False,
+        )
+        return [self._format_point(p) for p in points]
+
+    @staticmethod
+    def _format_point(p: Any) -> dict[str, Any]:
+        return {
+            "id": str(p.id),
+            "score": getattr(p, "score", None),
+            "payload": p.payload or {},
+        }
diff --git a/src/artenschutz_router/config.py b/src/artenschutz_router/config.py
new file mode 100644
index 0000000..d3c9715
--- /dev/null
+++ b/src/artenschutz_router/config.py
@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from functools import lru_cache
+
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    qdrant_url: str = "http://memory-qdrant:6333"
+    qdrant_collection: str = "agent_memory"
+    bge_tei_url: str = "http://memory-embeddings:8000"
+    memory_api_url: str = "http://memory-api:8000"
+
+    # Default agent_id is the client name — keeps the partition tenant-scoped
+    # rather than domain-scoped. Multi-client deployments override per-instance.
+    artenschutz_agent_id: str = "gruenstifter"
+
+    router_host: str = "0.0.0.0"
+    router_port: int = 8080
+    log_level: str = "INFO"
+
+    request_timeout_s: float = 30.0
+
+
+@lru_cache(maxsize=1)
+def get_settings() -> Settings:
+    return Settings()
diff --git a/src/artenschutz_router/ingest/__init__.py b/src/artenschutz_router/ingest/__init__.py
new file mode 100644
index 0000000..ac6caa2
--- /dev/null
+++ b/src/artenschutz_router/ingest/__init__.py
@@ -0,0 +1 @@
+"""Ingest pipelines for authoritative sources and (later) past Gutachten."""
diff --git a/src/artenschutz_router/ingest/authoritative/__init__.py b/src/artenschutz_router/ingest/authoritative/__init__.py
new file mode 100644
index 0000000..fc29317
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/__init__.py
@@ -0,0 +1,10 @@
+"""Loaders for authoritative legal/methodological sources.
+
+Each loader takes a Path to its source file(s) and yields `IngestRecord`
+instances. The CLI consumes those records and POSTs them to the router's
+`/ingest` endpoint.
+"""
+
+from .base import IngestRecord
+
+__all__ = ["IngestRecord"]
diff --git a/src/artenschutz_router/ingest/authoritative/base.py b/src/artenschutz_router/ingest/authoritative/base.py
new file mode 100644
index 0000000..1f96516
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/base.py
@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+from ...models import FactPayload
+
+
+@dataclass(frozen=True)
+class IngestRecord:
+    """One record ready to be POSTed to /ingest.
+
+    `content` is the embedded text. `payload` carries the structured
+    metadata that lands in Qdrant payload.
+    """
+
+    content: str
+    payload: FactPayload
+    importance: float = 0.5
+    language: str = "de"
+
+    def to_request_body(self, agent_id: str | None = None) -> dict:
+        body = {
+            "content": self.content,
+            "payload": self.payload.model_dump(mode="json"),
+            "importance": self.importance,
+            "language": self.language,
+        }
+        if agent_id is not None:
+            body["agent_id"] = agent_id
+        return body
diff --git a/src/artenschutz_router/ingest/authoritative/biotopwertliste.py b/src/artenschutz_router/ingest/authoritative/biotopwertliste.py
new file mode 100644
index 0000000..a5df082
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/biotopwertliste.py
@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+import logging
+from collections.abc import Iterator
+from pathlib import Path
+
+from ...models import FactPayload, FactScope, SourceInfo
+from ..chunker import chunk_by_size
+from ..pdf_text import extract_pdf_pages
+from .base import IngestRecord
+
+logger = logging.getLogger(__name__)
+
+DEFAULT_PATH = Path("sources/biotopwertliste/biotopwertliste.pdf")
+
+# NO default states — every Bundesland publishes its own Biotopwertliste
+# with different codes (Berlin's, BayKompV in Bayern, etc.). Operator must
+# tag the file with the right state(s) via the --states CLI flag, or place
+# state-specific lists under sources/states/<slug>/ for the state_docs loader.
+DEFAULT_STATES: list[str] = []
+
+
+def load(path: Path = DEFAULT_PATH, *, states: list[str] | None = None) -> Iterator[IngestRecord]:
+    """Yield biotope-code records from a Biotopwertliste PDF.
+
+    `states` should be set when the file is state-specific. Leave empty only
+    when the document is genuinely federal/cross-state — most Biotopwertlisten
+    are NOT.
+    """
+    if not path.exists():
+        raise FileNotFoundError(
+            f"Biotopwertliste source not found at {path}. "
+            "See sources/README.md."
+        )
+
+    pages = extract_pdf_pages(path)
+    if not any(pages):
+        logger.warning("No text extracted from %s", path)
+        return
+
+    scope_states = states if states is not None else DEFAULT_STATES
+
+    for page_idx, page_text in enumerate(pages):
+        if not page_text.strip():
+            continue
+        for chunk in chunk_by_size(page_text, target_chars=1800, overlap_chars=100):
+            payload = FactPayload(
+                fact_type="biotope",
+                source=SourceInfo(type="authoritative", doc="biotopwertliste"),
+                scope=FactScope(states=list(scope_states)),
+                citation_anchor=f"Biotopwertliste · Seite {page_idx + 1}",
+            )
+            yield IngestRecord(content=chunk.text, payload=payload, importance=0.75)
diff --git a/src/artenschutz_router/ingest/authoritative/bnatschg.py b/src/artenschutz_router/ingest/authoritative/bnatschg.py
new file mode 100644
index 0000000..b23f2d5
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/bnatschg.py
@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+import logging
+import re
+from collections.abc import Iterator
+from datetime import date
+from pathlib import Path
+
+from ...models import FactPayload, FactScope, SourceInfo
+from ..chunker import chunk_by_paragraph_marker
+from .base import IngestRecord
+
+logger = logging.getLogger(__name__)
+
+DEFAULT_PATH = Path("sources/bnatschg/bnatschg.txt")
+
+
+def load(path: Path = DEFAULT_PATH, *, valid_from: date | None = None) -> Iterator[IngestRecord]:
+    """Yield FactPayload records from a plain-text BNatSchG dump.
+
+    Expected format: UTF-8 text with `§ N ...` headings (and optionally
+    `Anlage N ...`). Sections in between become the chunk body.
+    Citations are anchored to the heading line.
+
+    BNatSchG is **federal** legislation — `scope.states` stays empty so
+    every state's query matches.
+    """
+    if not path.exists():
+        raise FileNotFoundError(
+            f"BNatSchG source not found at {path}. "
+            "See sources/README.md for how to populate it."
+        )
+
+    text = path.read_text(encoding="utf-8")
+    chunks = chunk_by_paragraph_marker(text)
+    if not chunks:
+        logger.warning("No § markers detected in %s — emitting nothing", path)
+        return
+
+    for chunk in chunks:
+        anchor = _normalise_anchor(chunk.anchor) if chunk.anchor else None
+        payload = FactPayload(
+            fact_type="legal",
+            source=SourceInfo(type="authoritative", doc="BNatSchG"),
+            scope=FactScope(),
+            valid_from=valid_from,
+            citation_anchor=anchor,
+        )
+        yield IngestRecord(content=chunk.text, payload=payload, importance=0.9)
+
+
+_ANCHOR_NORMALISE_RE = re.compile(r"\s+")
+
+
+def _normalise_anchor(raw: str) -> str:
+    """Trim and collapse whitespace; keep just the heading line."""
+    line = raw.splitlines()[0] if raw else ""
+    return _ANCHOR_NORMALISE_RE.sub(" ", line).strip()
diff --git a/src/artenschutz_router/ingest/authoritative/mhbasp.py b/src/artenschutz_router/ingest/authoritative/mhbasp.py
new file mode 100644
index 0000000..eb8812b
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/mhbasp.py
@@ -0,0 +1,49 @@
+from __future__ import annotations
+
+import logging
+from collections.abc import Iterator
+from pathlib import Path
+
+from ...models import FactPayload, FactScope, SourceInfo
+from ..chunker import chunk_by_size
+from ..pdf_text import extract_pdf_pages
+from .base import IngestRecord
+
+logger = logging.getLogger(__name__)
+
+DEFAULT_PATH = Path("sources/mhbasp/mhbasp_anhang4.pdf")
+
+
+def load(path: Path = DEFAULT_PATH) -> Iterator[IngestRecord]:
+    """Yield method-fact records from mhbasp Anhang 4.
+
+    Anhang 4 documents species-specific survey methods ("artspezifisch
+    geeignete Kartiermethoden"). PDF text extraction is noisy and the
+    document is table-heavy; v1 ingests page-level chunks with size-bound
+    splits inside long pages. A later phase can replace this with a
+    proper table parser.
+
+    Like BNatSchG, mhbasp is federal — `scope.states` stays empty.
+    """
+    if not path.exists():
+        raise FileNotFoundError(
+            f"mhbasp source not found at {path}. "
+            "See sources/README.md (a symlink into GST-DATA is the quickest path)."
+        )
+
+    pages = extract_pdf_pages(path)
+    if not any(pages):
+        logger.warning("No text extracted from %s", path)
+        return
+
+    for page_idx, page_text in enumerate(pages):
+        if not page_text.strip():
+            continue
+        for chunk in chunk_by_size(page_text, target_chars=1500, overlap_chars=150):
+            payload = FactPayload(
+                fact_type="method",
+                source=SourceInfo(type="authoritative", doc="mhbasp_anhang4"),
+                scope=FactScope(),
+                citation_anchor=f"mhbasp Anhang 4 · Seite {page_idx + 1}",
+            )
+            yield IngestRecord(content=chunk.text, payload=payload, importance=0.85)
diff --git a/src/artenschutz_router/ingest/authoritative/state_docs.py b/src/artenschutz_router/ingest/authoritative/state_docs.py
new file mode 100644
index 0000000..ffd7c2c
--- /dev/null
+++ b/src/artenschutz_router/ingest/authoritative/state_docs.py
@@ -0,0 +1,54 @@
+from __future__ import annotations
+
+import logging
+from collections.abc import Iterator
+from pathlib import Path
+
+from ...models import FactPayload, FactScope, SourceInfo
+from ..chunker import chunk_by_size
+from ..pdf_text import extract_pdf_pages
+from .base import IngestRecord
+
+logger = logging.getLogger(__name__)
+
+
+# Map of state slug → (Bundesland code, source-dir name).
+STATES: dict[str, tuple[str, str]] = {
+    "berlin": ("BE", "berlin"),
+    "brandenburg": ("BB", "brandenburg"),
+    "bayern": ("BY", "bayern"),
+    "baden_wuerttemberg": ("BW", "baden_wuerttemberg"),
+    "sachsen": ("SN", "sachsen"),
+}
+
+
+def load(state_slug: str, sources_root: Path = Path("sources/states")) -> Iterator[IngestRecord]:
+    """Yield method-fact records from all PDFs under sources/states/<slug>/."""
+    if state_slug not in STATES:
+        raise ValueError(
+            f"Unknown state '{state_slug}'. Known: {', '.join(sorted(STATES))}"
+        )
+    state_code, dirname = STATES[state_slug]
+    state_dir = sources_root / dirname
+    if not state_dir.exists():
+        raise FileNotFoundError(f"State source dir not found: {state_dir}")
+
+    pdfs = sorted(state_dir.glob("*.pdf"))
+    if not pdfs:
+        logger.warning("No PDFs under %s — nothing to ingest for state %s", state_dir, state_slug)
+        return
+
+    for pdf in pdfs:
+        logger.info("Ingesting %s for state %s", pdf.name, state_code)
+        pages = extract_pdf_pages(pdf)
+        for page_idx, page_text in enumerate(pages):
+            if not page_text.strip():
+                continue
+            for chunk in chunk_by_size(page_text, target_chars=1500, overlap_chars=150):
+                payload = FactPayload(
+                    fact_type="method",
+                    source=SourceInfo(type="authoritative", doc=pdf.stem),
+                    scope=FactScope(states=[state_code]),
+                    citation_anchor=f"{pdf.name} · Seite {page_idx + 1}",
+                )
+                yield IngestRecord(content=chunk.text, payload=payload, importance=0.8)
diff --git a/src/artenschutz_router/ingest/chunker.py b/src/artenschutz_router/ingest/chunker.py
new file mode 100644
index 0000000..f7a59b5
--- /dev/null
+++ b/src/artenschutz_router/ingest/chunker.py
@@ -0,0 +1,93 @@
+from __future__ import annotations
+
+import re
+from collections.abc import Iterator
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class Chunk:
+    """A chunk of text plus a heading anchor (e.g. '§ 44' or section title)."""
+
+    anchor: str | None
+    text: str
+
+
+_PARAGRAPH_RE = re.compile(r"^[ \t]*§[ \t]*\d+\w*", re.MULTILINE)
+_ANLAGE_RE = re.compile(r"^[ \t]*Anlage[ \t]+\d+", re.MULTILINE)
+_HEADING_RE = re.compile(r"^(\d+(\.\d+)*\s+\S.*|[A-ZÄÖÜ][^\n]{0,80})$", re.MULTILINE)
+
+
+def chunk_by_paragraph_marker(text: str) -> list[Chunk]:
+    """Split a legal text by `§ N` (and `Anlage N`) markers.
+
+    Each chunk starts at a marker line and runs until the next marker.
+    The marker line itself becomes the chunk anchor.
+    """
+    # Find all marker positions (paragraph + anlage).
+    starts: list[tuple[int, str]] = []
+    for m in _PARAGRAPH_RE.finditer(text):
+        starts.append((m.start(), _first_line(text, m.start())))
+    for m in _ANLAGE_RE.finditer(text):
+        starts.append((m.start(), _first_line(text, m.start())))
+    starts.sort()
+
+    if not starts:
+        return [Chunk(anchor=None, text=text.strip())] if text.strip() else []
+
+    chunks: list[Chunk] = []
+    for idx, (pos, anchor) in enumerate(starts):
+        end = starts[idx + 1][0] if idx + 1 < len(starts) else len(text)
+        body = text[pos:end].strip()
+        if body:
+            chunks.append(Chunk(anchor=anchor.strip(), text=body))
+    return chunks
+
+
+def chunk_by_size(text: str, *, target_chars: int = 1500, overlap_chars: int = 200) -> list[Chunk]:
+    """Sliding-window chunker for noisy text (PDF extracts). Breaks on
+    paragraph boundaries when possible."""
+    text = text.strip()
+    if not text:
+        return []
+
+    paragraphs = re.split(r"\n\s*\n", text)
+    chunks: list[Chunk] = []
+    buf: list[str] = []
+    buf_len = 0
+
+    def flush():
+        if buf:
+            chunks.append(Chunk(anchor=None, text="\n\n".join(buf).strip()))
+
+    for para in paragraphs:
+        para = para.strip()
+        if not para:
+            continue
+        if buf_len + len(para) + 2 > target_chars and buf:
+            flush()
+            # carry overlap
+            if overlap_chars > 0 and buf:
+                tail = buf[-1][-overlap_chars:]
+                buf = [tail]
+                buf_len = len(tail)
+            else:
+                buf = []
+                buf_len = 0
+        buf.append(para)
+        buf_len += len(para) + 2
+
+    flush()
+    return chunks
+
+
+def iter_section_chunks(text: str, *, target_chars: int = 1500) -> Iterator[Chunk]:
+    """Generator wrapper for size-based chunking."""
+    yield from chunk_by_size(text, target_chars=target_chars)
+
+
+def _first_line(text: str, pos: int) -> str:
+    end = text.find("\n", pos)
+    if end == -1:
+        end = min(len(text), pos + 120)
+    return text[pos:end]
diff --git a/src/artenschutz_router/ingest/cli.py b/src/artenschutz_router/ingest/cli.py
new file mode 100644
index 0000000..4a19c6d
--- /dev/null
+++ b/src/artenschutz_router/ingest/cli.py
@@ -0,0 +1,136 @@
+from __future__ import annotations
+
+import argparse
+import json
+import logging
+import sys
+from collections.abc import Iterator
+from pathlib import Path
+
+import httpx
+
+from .authoritative import IngestRecord
+from .authoritative import bnatschg as bnatschg_loader
+from .authoritative import biotopwertliste as biotop_loader
+from .authoritative import mhbasp as mhbasp_loader
+from .authoritative import state_docs as state_loader
+
+logger = logging.getLogger(__name__)
+
+
+_SOURCE_HELP = (
+    "Source slug. One of: bnatschg, mhbasp, biotopwertliste, state-<slug> "
+    f"(states: {', '.join(sorted(state_loader.STATES))})."
+)
+
+
+def _load_records(
+    source: str, sources_root: Path, *, states: list[str] | None = None
+) -> Iterator[IngestRecord]:
+    if source == "bnatschg":
+        yield from bnatschg_loader.load(sources_root / "bnatschg" / "bnatschg.txt")
+        return
+    if source == "mhbasp":
+        yield from mhbasp_loader.load(sources_root / "mhbasp" / "mhbasp_anhang4.pdf")
+        return
+    if source == "biotopwertliste":
+        yield from biotop_loader.load(
+            sources_root / "biotopwertliste" / "biotopwertliste.pdf", states=states
+        )
+        return
+    if source.startswith("state-"):
+        slug = source[len("state-") :]
+        yield from state_loader.load(slug, sources_root=sources_root / "states")
+        return
+    raise SystemExit(f"Unknown --source '{source}'. {_SOURCE_HELP}")
+
+
+def _post_record(client: httpx.Client, router_url: str, record: IngestRecord) -> str:
+    resp = client.post(
+        f"{router_url.rstrip('/')}/ingest",
+        json=record.to_request_body(),
+    )
+    resp.raise_for_status()
+    return resp.json()["id"]
+
+
+def main(argv: list[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(
+        prog="artenschutz-ingest",
+        description="Ingest authoritative Artenschutz sources via the router /ingest endpoint.",
+    )
+    parser.add_argument("--source", required=True, help=_SOURCE_HELP)
+    parser.add_argument(
+        "--router-url",
+        default="http://localhost:8080",
+        help="Base URL of the running artenschutz-router (default: %(default)s)",
+    )
+    parser.add_argument(
+        "--sources-root",
+        default="sources",
+        type=Path,
+        help="Root dir holding source files (default: %(default)s)",
+    )
+    parser.add_argument(
+        "--dry-run",
+        action="store_true",
+        help="Print records as JSON, don't POST to the router.",
+    )
+    parser.add_argument(
+        "--limit", type=int, default=0, help="Stop after N records (0 = no limit)."
+    )
+    parser.add_argument(
+        "--states",
+        nargs="*",
+        default=None,
+        help="Override `scope.states` for sources that need a state tag (currently: biotopwertliste).",
+    )
+    parser.add_argument(
+        "--log-level", default="INFO", help="Logging level (default: %(default)s)"
+    )
+    args = parser.parse_args(argv)
+
+    logging.basicConfig(
+        level=getattr(logging, args.log_level.upper(), logging.INFO),
+        format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    )
+
+    records = _load_records(args.source, args.sources_root, states=args.states)
+    if args.limit > 0:
+        records = _take(records, args.limit)
+
+    if args.dry_run:
+        count = 0
+        for r in records:
+            print(json.dumps(r.to_request_body(), ensure_ascii=False))
+            count += 1
+        logger.info("Dry-run produced %d records", count)
+        return 0
+
+    posted = 0
+    errors = 0
+    with httpx.Client(timeout=60.0) as client:
+        for record in records:
+            try:
+                memory_id = _post_record(client, args.router_url, record)
+                logger.debug("Stored %s (anchor=%s)", memory_id, record.payload.citation_anchor)
+                posted += 1
+            except httpx.HTTPError as exc:
+                logger.error("POST failed for record: %s", exc)
+                errors += 1
+                if errors > 5 and posted == 0:
+                    logger.error("Aborting after %d consecutive failures with no successes", errors)
+                    return 2
+    logger.info("Posted %d records (errors: %d)", posted, errors)
+    return 0 if errors == 0 else 1
+
+
+def _take(iterable, n: int):
+    for i, x in enumerate(iterable):
+        if i >= n:
+            return
+        yield x
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/src/artenschutz_router/ingest/pdf_text.py b/src/artenschutz_router/ingest/pdf_text.py
new file mode 100644
index 0000000..6ad4d04
--- /dev/null
+++ b/src/artenschutz_router/ingest/pdf_text.py
@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+
+from pypdf import PdfReader
+
+logger = logging.getLogger(__name__)
+
+
+def extract_pdf_pages(path: Path) -> list[str]:
+    """Return page texts. Empty strings for pages where extraction failed."""
+    reader = PdfReader(str(path))
+    pages: list[str] = []
+    for i, page in enumerate(reader.pages):
+        try:
+            text = page.extract_text() or ""
+        except Exception as exc:  # noqa: BLE001
+            logger.warning("Page %d of %s failed text extraction: %s", i + 1, path.name, exc)
+            text = ""
+        pages.append(text.strip())
+    return pages
+
+
+def extract_pdf_text(path: Path) -> str:
+    """Concatenated page text with double-newline separators."""
+    return "\n\n".join(p for p in extract_pdf_pages(path) if p)
diff --git a/src/artenschutz_router/main.py b/src/artenschutz_router/main.py
new file mode 100644
index 0000000..c8c130a
--- /dev/null
+++ b/src/artenschutz_router/main.py
@@ -0,0 +1,93 @@
+from __future__ import annotations
+
+import logging
+from contextlib import asynccontextmanager
+
+from fastapi import FastAPI
+
+from .clients.bge import BGEClient
+from .clients.memory_api import MemoryApiClient
+from .clients.qdrant import QdrantReader
+from .config import get_settings
+from .models import HealthResponse
+from .routes import ingest as ingest_routes
+from .routes import search as search_routes
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    settings = get_settings()
+    logging.basicConfig(
+        level=getattr(logging, settings.log_level.upper(), logging.INFO),
+        format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
+    )
+    logger = logging.getLogger(__name__)
+    logger.info("Starting artenschutz-router")
+    logger.info("  Qdrant:     %s (collection: %s)", settings.qdrant_url, settings.qdrant_collection)
+    logger.info("  BGE TEI:    %s", settings.bge_tei_url)
+    logger.info("  memory-api: %s", settings.memory_api_url)
+    logger.info("  agent_id:   %s", settings.artenschutz_agent_id)
+
+    qdrant = QdrantReader(url=settings.qdrant_url, collection=settings.qdrant_collection)
+    bge = BGEClient(base_url=settings.bge_tei_url, timeout_s=settings.request_timeout_s)
+    memory_api = MemoryApiClient(base_url=settings.memory_api_url, timeout_s=settings.request_timeout_s)
+
+    app.state.settings = settings
+    app.state.qdrant = qdrant
+    app.state.bge = bge
+    app.state.memory_api = memory_api
+
+    try:
+        yield
+    finally:
+        await qdrant.close()
+        await bge.close()
+        await memory_api.close()
+
+
+app = FastAPI(
+    title="artenschutz-router",
+    description=(
+        "Sidecar router for Artenschutz domain queries against agent.memory.system. "
+        "Writes proxy memory-api /memory/store; reads go directly to Qdrant."
+    ),
+    version="0.1.0",
+    lifespan=lifespan,
+)
+
+
+app.include_router(search_routes.router)
+app.include_router(ingest_routes.router)
+
+
+@app.get("/health", response_model=HealthResponse, tags=["health"])
+async def health() -> HealthResponse:
+    """Live-probes Qdrant, BGE-M3 TEI, memory-api. `degraded` if any fail."""
+    qdrant_ok = True
+    bge_ok = True
+    memory_api_ok = False
+
+    try:
+        await app.state.qdrant._client.get_collections()  # noqa: SLF001
+    except Exception:
+        qdrant_ok = False
+
+    try:
+        # TEI exposes /health; falling back to /info on older versions.
+        resp = await app.state.bge._client.get("/health")  # noqa: SLF001
+        bge_ok = resp.status_code == 200
+    except Exception:
+        bge_ok = False
+
+    try:
+        memory_api_ok = await app.state.memory_api.health()
+    except Exception:
+        memory_api_ok = False
+
+    overall = "ok" if all([qdrant_ok, bge_ok, memory_api_ok]) else "degraded"
+    return HealthResponse(
+        status=overall,
+        qdrant=qdrant_ok,
+        bge=bge_ok,
+        memory_api=memory_api_ok,
+    )
diff --git a/src/artenschutz_router/models.py b/src/artenschutz_router/models.py
new file mode 100644
index 0000000..6c5e95f
--- /dev/null
+++ b/src/artenschutz_router/models.py
@@ -0,0 +1,142 @@
+from __future__ import annotations
+
+from datetime import date
+from typing import Annotated, Any, Literal
+
+from pydantic import BaseModel, ConfigDict, Field
+
+# ---------------------------------------------------------------------------
+# Payload schemas — what travels in Qdrant payload via the `metadata` field
+# on memory-api /memory/store.
+# ---------------------------------------------------------------------------
+
+
+class SourceInfo(BaseModel):
+    """Where a memory came from."""
+
+    type: Literal["authoritative", "extracted"]
+    doc: str = Field(..., description="Short slug — e.g. 'BNatSchG', 'mhbasp_anhang4', or project_slug")
+    year: int | None = None
+    tier: Literal["A", "B", "C"] | None = None
+
+
+class FactScope(BaseModel):
+    """Filterable scope dimensions for facts."""
+
+    states: list[str] = Field(default_factory=list, description="DE Bundesland codes, e.g. ['BE', 'BB']")
+    anlagen_typ: list[str] = Field(default_factory=list, description="['WEA', 'PV', 'Neubau', 'Eingriff', ...]")
+    species: list[str] = Field(default_factory=list, description="GBIF/Faunistik IDs or scientific names")
+    impact_types: list[str] = Field(default_factory=list, description="['lichtemission', 'rotor', 'bauzeit', ...]")
+
+
+FactType = Literal["legal", "method", "biotope", "mitigation", "verdict"]
+
+
+class FactPayload(BaseModel):
+    """Structured fact record (lives in Qdrant payload)."""
+
+    model_config = ConfigDict(extra="forbid")
+
+    kind: Literal["fact"] = "fact"
+    fact_type: FactType
+    source: SourceInfo
+    scope: FactScope = Field(default_factory=FactScope)
+    valid_from: date | None = None
+    valid_until: date | None = None
+    accepted_by_behoerde: bool | None = None
+    supersedes: str | None = None
+    citation_anchor: str | None = Field(
+        default=None, description="Human-readable anchor, e.g. 'BNatSchG §44(1) Nr. 1'"
+    )
+
+
+ReportType = Literal["AFB", "FachGA", "MBKS", "ASB", "LBP", "KONZ", "Other"]
+
+
+class ExemplarPayload(BaseModel):
+    """Prose chunk from a past Gutachten (lives in Qdrant payload)."""
+
+    model_config = ConfigDict(extra="forbid")
+
+    kind: Literal["exemplar"] = "exemplar"
+    project_slug: str
+    report_type: ReportType
+    state: str | None = None
+    anlagen_typ: str | None = None
+    year: int | None = None
+    tier: Literal["A", "B", "C"]
+    section: str | None = Field(default=None, description="Canonical section name from template")
+    species_mentioned: list[str] = Field(default_factory=list)
+    source_path: str | None = None
+    is_draft: bool = False
+
+
+Payload = Annotated[FactPayload | ExemplarPayload, Field(discriminator="kind")]
+
+
+# ---------------------------------------------------------------------------
+# API request / response models
+# ---------------------------------------------------------------------------
+
+
+class SearchRequest(BaseModel):
+    """Generic search — hybrid (dense+sparse) when `query` provided,
+    payload-filter scroll otherwise."""
+
+    query: str | None = None
+    metadata_filter: dict[str, Any] | None = Field(
+        default=None,
+        description=(
+            "Flat dict of payload key → value or [values]. "
+            "Dotted keys reach into nested payload (e.g. 'scope.states')."
+        ),
+    )
+    memory_types: list[str] | None = None
+    limit: int = 10
+    prefetch_limit: int = 50
+    agent_id: str | None = Field(
+        default=None,
+        description="Overrides the configured default — leave unset to use the router's agent_id.",
+    )
+
+
+class SearchHit(BaseModel):
+    id: str
+    score: float | None
+    payload: dict[str, Any]
+
+
+class SearchResponse(BaseModel):
+    strategy: Literal["hybrid", "scroll"]
+    hits: list[SearchHit]
+
+
+class IngestRequest(BaseModel):
+    """Push a single fact or exemplar into the memory store.
+
+    The router rewrites the body to memory-api's /memory/store contract:
+      - `content` becomes the embedded text
+      - `payload` becomes the `metadata` dict
+      - `agent_id` defaults to the router's configured value
+    """
+
+    content: str
+    payload: Payload
+    importance: float = 0.5
+    entities: list[str] = Field(default_factory=list)
+    language: str = "de"
+    agent_id: str | None = None
+    # MemoryType in m2-memory: working|episodic|semantic|fact|research|other.
+    # Facts → 'fact'; exemplars → 'semantic'.
+    memory_type: str | None = None
+
+
+class IngestResponse(BaseModel):
+    id: str
+
+
+class HealthResponse(BaseModel):
+    status: Literal["ok", "degraded"]
+    qdrant: bool
+    bge: bool
+    memory_api: bool
diff --git a/src/artenschutz_router/routes/__init__.py b/src/artenschutz_router/routes/__init__.py
new file mode 100644
index 0000000..efd524c
--- /dev/null
+++ b/src/artenschutz_router/routes/__init__.py
@@ -0,0 +1 @@
+"""HTTP routes."""
diff --git a/src/artenschutz_router/routes/ingest.py b/src/artenschutz_router/routes/ingest.py
new file mode 100644
index 0000000..6fbaa39
--- /dev/null
+++ b/src/artenschutz_router/routes/ingest.py
@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter, HTTPException, Request
+
+from ..models import FactPayload, IngestRequest, IngestResponse
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/ingest", tags=["ingest"])
+
+
+@router.post("", response_model=IngestResponse)
+async def ingest(req: IngestRequest, request: Request) -> IngestResponse:
+    """Push a single Fact or Exemplar record into agent.memory.system.
+
+    Translates to memory-api's /memory/store contract — see clients/memory_api.py.
+    """
+    settings = request.app.state.settings
+    memory_api = request.app.state.memory_api
+
+    agent_id = req.agent_id or settings.artenschutz_agent_id
+    memory_type = req.memory_type or ("fact" if isinstance(req.payload, FactPayload) else "semantic")
+
+    payload_dict = req.payload.model_dump(mode="json")
+
+    try:
+        memory_id = await memory_api.store(
+            content=req.content,
+            agent_id=agent_id,
+            memory_type=memory_type,
+            importance=req.importance,
+            source="document",
+            entities=req.entities,
+            language=req.language,
+            metadata=payload_dict,
+        )
+    except Exception as exc:  # noqa: BLE001
+        logger.exception("memory-api /store failed")
+        raise HTTPException(502, f"memory-api store failed: {exc}") from exc
+
+    return IngestResponse(id=memory_id)
diff --git a/src/artenschutz_router/routes/search.py b/src/artenschutz_router/routes/search.py
new file mode 100644
index 0000000..59d10d1
--- /dev/null
+++ b/src/artenschutz_router/routes/search.py
@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter, HTTPException, Request
+
+from ..clients.bge import build_qdrant_filter
+from ..models import SearchHit, SearchRequest, SearchResponse
+
+logger = logging.getLogger(__name__)
+
+router = APIRouter(prefix="/search", tags=["search"])
+
+
+@router.post("/generic", response_model=SearchResponse)
+async def search_generic(req: SearchRequest, request: Request) -> SearchResponse:
+    """Hybrid retrieval when `query` is provided; payload-filter scroll otherwise.
+
+    The router scopes every query to its configured `agent_id` (overridable per
+    request). Memory-type filtering is applied as an additional payload `must`
+    clause when supplied.
+    """
+    settings = request.app.state.settings
+    qdrant = request.app.state.qdrant
+    bge = request.app.state.bge
+
+    agent_id = req.agent_id or settings.artenschutz_agent_id
+
+    raw_filter = build_qdrant_filter(req.metadata_filter)
+    if req.memory_types:
+        extra = {"key": "memory_type", "match": {"any": req.memory_types}}
+        raw_filter = {"must": (raw_filter or {}).get("must", []) + [extra]}
+
+    if req.query:
+        try:
+            dense, sparse = await bge.embed_hybrid(req.query)
+        except Exception as exc:  # noqa: BLE001
+            logger.exception("BGE embedding failed")
+            raise HTTPException(502, f"BGE embedding failed: {exc}") from exc
+
+        hits = await qdrant.hybrid_query(
+            agent_id=agent_id,
+            dense=dense,
+            sparse=sparse,
+            metadata_filter=raw_filter,
+            limit=req.limit,
+            prefetch_limit=req.prefetch_limit,
+        )
+        return SearchResponse(
+            strategy="hybrid",
+            hits=[SearchHit(**h) for h in hits],
+        )
+
+    hits = await qdrant.scroll(
+        agent_id=agent_id,
+        metadata_filter=raw_filter,
+        limit=req.limit,
+    )
+    return SearchResponse(
+        strategy="scroll",
+        hits=[SearchHit(**h) for h in hits],
+    )
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_app.py b/tests/test_app.py
new file mode 100644
index 0000000..498db71
--- /dev/null
+++ b/tests/test_app.py
@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from fastapi.testclient import TestClient
+
+from artenschutz_router.main import app
+
+
+def test_app_constructs():
+    """Smoke test: app object exists, routes registered."""
+    paths = {route.path for route in app.routes}
+    assert "/health" in paths
+    assert "/search/generic" in paths
+    assert "/ingest" in paths
+
+
+def test_openapi_schema_renders():
+    # Force lifespan to skip (we don't have Qdrant/BGE running in unit tests).
+    # We can still call openapi.json which doesn't touch the lifespan-managed
+    # clients.
+    with TestClient(app, raise_server_exceptions=False) as client:
+        # Disable lifespan by short-circuiting via app.state — not strictly
+        # necessary for openapi but keeps the test fast.
+        resp = client.get("/openapi.json")
+        # If lifespan failed connecting to deps, app may still serve openapi.
+        assert resp.status_code == 200
+        spec = resp.json()
+        assert spec["info"]["title"] == "artenschutz-router"
+        assert "/search/generic" in spec["paths"]
+        assert "/ingest" in spec["paths"]
+        assert "/health" in spec["paths"]
diff --git a/tests/test_bnatschg_loader.py b/tests/test_bnatschg_loader.py
new file mode 100644
index 0000000..bf8ff68
--- /dev/null
+++ b/tests/test_bnatschg_loader.py
@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+from datetime import date
+from pathlib import Path
+
+import pytest
+
+from artenschutz_router.ingest.authoritative import bnatschg as loader
+
+
+SAMPLE_BNATSCHG = """§ 44 Vorschriften für besonders geschützte und bestimmte andere Tier- und Pflanzenarten
+
+(1) Es ist verboten,
+1. wild lebenden Tieren der besonders geschützten Arten nachzustellen,
+   sie zu fangen, zu verletzen oder zu töten oder ihre Entwicklungsformen aus
+   der Natur zu entnehmen, zu beschädigen oder zu zerstören.
+
+(5) Für nach § 15 Absatz 1 unvermeidbare Beeinträchtigungen …
+
+§ 45b Schutz wild lebender Vögel
+
+(1) Beim Betrieb von Windenergieanlagen sind die in Anlage 1 …
+"""
+
+
+def test_loads_records_from_synthetic_text(tmp_path: Path):
+    path = tmp_path / "bnatschg.txt"
+    path.write_text(SAMPLE_BNATSCHG, encoding="utf-8")
+
+    records = list(loader.load(path, valid_from=date(2024, 1, 1)))
+    assert len(records) == 2
+    anchors = [r.payload.citation_anchor for r in records]
+    assert any(a and a.startswith("§ 44") for a in anchors)
+    assert any(a and a.startswith("§ 45b") for a in anchors)
+    for r in records:
+        assert r.payload.fact_type == "legal"
+        assert r.payload.source.doc == "BNatSchG"
+        assert r.payload.source.type == "authoritative"
+        assert r.payload.scope.states == []
+        assert r.payload.valid_from == date(2024, 1, 1)
+        assert r.importance > 0
+
+
+def test_missing_file_raises(tmp_path: Path):
+    path = tmp_path / "nope.txt"
+    with pytest.raises(FileNotFoundError):
+        list(loader.load(path))
+
+
+def test_request_body_shape(tmp_path: Path):
+    path = tmp_path / "bnatschg.txt"
+    path.write_text(SAMPLE_BNATSCHG, encoding="utf-8")
+    record = next(loader.load(path))
+    body = record.to_request_body()
+    assert body["content"]
+    assert body["payload"]["kind"] == "fact"
+    assert body["payload"]["fact_type"] == "legal"
+    assert "agent_id" not in body  # left to the router unless overridden
diff --git a/tests/test_chunker.py b/tests/test_chunker.py
new file mode 100644
index 0000000..f6ceb64
--- /dev/null
+++ b/tests/test_chunker.py
@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+from artenschutz_router.ingest.chunker import chunk_by_paragraph_marker, chunk_by_size
+
+
+def test_paragraph_chunker_splits_at_section_markers():
+    text = """Vor § 44.
+
+§ 44 Vorschriften für besonders geschützte und bestimmte andere Tier- und Pflanzenarten
+
+(1) Es ist verboten,
+1. wild lebenden Tieren der besonders geschützten Arten nachzustellen, sie zu fangen, …
+
+§ 45b Schutz wild lebender Vögel
+
+(1) Beim Betrieb von Windenergieanlagen …
+
+Anlage 1 (zu § 54 Absatz 4)
+
+Bestimmte besonders geschützte Arten …
+"""
+    chunks = chunk_by_paragraph_marker(text)
+    anchors = [c.anchor for c in chunks]
+    assert any(a and a.startswith("§ 44") for a in anchors)
+    assert any(a and a.startswith("§ 45b") for a in anchors)
+    assert any(a and a.startswith("Anlage 1") for a in anchors)
+    # Pre-§44 prefix should NOT become its own chunk (we anchor on markers).
+    assert "Vor § 44" not in chunks[0].text
+
+
+def test_paragraph_chunker_returns_single_when_no_markers():
+    text = "Plain prose without any paragraph markers, just regular text."
+    chunks = chunk_by_paragraph_marker(text)
+    assert len(chunks) == 1
+    assert chunks[0].anchor is None
+
+
+def test_size_chunker_respects_target_size():
+    paragraphs = ["abc def ghi jkl"] * 200
+    text = "\n\n".join(paragraphs)
+    chunks = chunk_by_size(text, target_chars=200, overlap_chars=20)
+    assert len(chunks) > 1
+    for c in chunks:
+        # Overlap may push slightly over; tolerate 2x.
+        assert len(c.text) < 600
+
+
+def test_size_chunker_handles_empty():
+    assert chunk_by_size("") == []
+    assert chunk_by_size("   \n   ") == []
diff --git a/tests/test_cli.py b/tests/test_cli.py
new file mode 100644
index 0000000..2d2393c
--- /dev/null
+++ b/tests/test_cli.py
@@ -0,0 +1,49 @@
+from __future__ import annotations
+
+import json
+from io import StringIO
+from pathlib import Path
+
+import pytest
+
+from artenschutz_router.ingest import cli
+
+
+SAMPLE_BNATSCHG = """§ 44 Vorschriften
+
+(1) Es ist verboten …
+
+§ 45b Schutz wild lebender Vögel
+
+(1) Beim Betrieb von WEA …
+"""
+
+
+def test_cli_dry_run_emits_json(tmp_path: Path, capsys: pytest.CaptureFixture):
+    sources_root = tmp_path / "sources"
+    bn_dir = sources_root / "bnatschg"
+    bn_dir.mkdir(parents=True)
+    (bn_dir / "bnatschg.txt").write_text(SAMPLE_BNATSCHG, encoding="utf-8")
+
+    rc = cli.main(
+        [
+            "--source",
+            "bnatschg",
+            "--sources-root",
+            str(sources_root),
+            "--dry-run",
+        ]
+    )
+    assert rc == 0
+    out = capsys.readouterr().out.strip().splitlines()
+    assert len(out) == 2
+    for line in out:
+        record = json.loads(line)
+        assert record["payload"]["kind"] == "fact"
+        assert record["payload"]["fact_type"] == "legal"
+        assert record["content"]
+
+
+def test_cli_rejects_unknown_source(tmp_path: Path):
+    with pytest.raises(SystemExit):
+        cli.main(["--source", "nonsense", "--sources-root", str(tmp_path), "--dry-run"])
diff --git a/tests/test_filter_builder.py b/tests/test_filter_builder.py
new file mode 100644
index 0000000..82f8614
--- /dev/null
+++ b/tests/test_filter_builder.py
@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from artenschutz_router.clients.bge import build_qdrant_filter
+
+
+def test_returns_none_for_empty():
+    assert build_qdrant_filter(None) is None
+    assert build_qdrant_filter({}) is None
+
+
+def test_scalar_match_value():
+    f = build_qdrant_filter({"kind": "fact"})
+    assert f == {"must": [{"key": "kind", "match": {"value": "fact"}}]}
+
+
+def test_list_match_any():
+    f = build_qdrant_filter({"fact_type": ["legal", "mitigation"]})
+    assert f == {"must": [{"key": "fact_type", "match": {"any": ["legal", "mitigation"]}}]}
+
+
+def test_drops_none_values():
+    f = build_qdrant_filter({"a": "x", "b": None, "c": [1, 2]})
+    must = f["must"]
+    keys = {clause["key"] for clause in must}
+    assert keys == {"a", "c"}
+
+
+def test_nested_dotted_keys_pass_through():
+    f = build_qdrant_filter({"scope.states": ["BE", "BB"]})
+    assert f["must"][0]["key"] == "scope.states"
diff --git a/tests/test_models.py b/tests/test_models.py
new file mode 100644
index 0000000..5022afb
--- /dev/null
+++ b/tests/test_models.py
@@ -0,0 +1,91 @@
+from __future__ import annotations
+
+from datetime import date
+
+import pytest
+from pydantic import ValidationError
+
+from artenschutz_router.models import (
+    ExemplarPayload,
+    FactPayload,
+    FactScope,
+    IngestRequest,
+    SearchRequest,
+    SourceInfo,
+)
+
+
+def test_fact_payload_minimal():
+    p = FactPayload(
+        fact_type="legal",
+        source=SourceInfo(type="authoritative", doc="BNatSchG"),
+    )
+    assert p.kind == "fact"
+    assert p.scope.states == []
+    assert p.valid_until is None
+
+
+def test_fact_payload_rich():
+    p = FactPayload(
+        fact_type="mitigation",
+        source=SourceInfo(type="extracted", doc="GS_GA_BER_Foo_FachGA", year=2024, tier="A"),
+        scope=FactScope(
+            states=["BE"],
+            anlagen_typ=["Neubau"],
+            species=["passer_domesticus"],
+            impact_types=["bauzeit"],
+        ),
+        valid_from=date(2023, 4, 1),
+        accepted_by_behoerde=True,
+        citation_anchor="§44(1) Nr. 1",
+    )
+    dumped = p.model_dump(mode="json")
+    assert dumped["valid_from"] == "2023-04-01"
+    assert dumped["accepted_by_behoerde"] is True
+
+
+def test_fact_payload_rejects_unknown_fact_type():
+    with pytest.raises(ValidationError):
+        FactPayload(fact_type="bogus", source=SourceInfo(type="authoritative", doc="x"))
+
+
+def test_exemplar_payload_minimal():
+    p = ExemplarPayload(
+        project_slug="GS_GA_BER_Covivio_Hasenheide_94_FachGA",
+        report_type="FachGA",
+        tier="A",
+    )
+    assert p.kind == "exemplar"
+    assert p.is_draft is False
+    assert p.species_mentioned == []
+
+
+def test_ingest_request_discriminates_payload():
+    fact_req = IngestRequest(
+        content="§44 (1) BNatSchG …",
+        payload={
+            "kind": "fact",
+            "fact_type": "legal",
+            "source": {"type": "authoritative", "doc": "BNatSchG"},
+        },
+    )
+    assert isinstance(fact_req.payload, FactPayload)
+
+    exemplar_req = IngestRequest(
+        content="Im Untersuchungsraum wurden …",
+        payload={
+            "kind": "exemplar",
+            "project_slug": "GS_GA_BER_Foo",
+            "report_type": "FachGA",
+            "tier": "A",
+        },
+    )
+    assert isinstance(exemplar_req.payload, ExemplarPayload)
+
+
+def test_search_request_defaults():
+    s = SearchRequest()
+    assert s.query is None
+    assert s.limit == 10
+    assert s.prefetch_limit == 50
+    assert s.metadata_filter is None