feat: add DE Lobbyregister as data source DS-00011

Lobbyregistergesetz (2022) mandatory register for Bundestag/Bundesregierung lobbying.
Connected to PR-00002 (Illegitimate Domination) and PR-00005 (Epistemic Power).
Includes quality assessment, API access notes, potential future metrics,
and cross-links to OR-00004 (Mehr Demokratie) and OR-00005 (netzpolitik.org).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Data/DE-Democracy-Metrics/DE-Democracy-Metrics.md

@@ -121,6 +121,17 @@ Germany's democratic institutions remain functional, but key indicators signal s
 
 ---
 
+## Connection to Lobbyregister (DS-00011)
+
+The Lobbyregister is a complementary transparency source. Potential future metrics for this dataset:
+- Total registered lobbying expenditure (annual aggregate)
+- Top sectors by spending (Finance, Pharma, Energy)
+- Expenditure per policy area
+
+See `Data/sources/DS-00011—DE_Lobbyregister_Bundestag/source.md` for API access and quality notes.
+
+---
+
 ## Connection to DE-Plan
 
 These metrics directly support `Plans/de-plan1-sven.md`:

Data/sources/DS-00011—DE_Lobbyregister_Bundestag/source.md

@@ -0,0 +1,106 @@
+# Lobbyregister des Deutschen Bundestags
+
+**Source ID:** DS-00011
+**Record Created:** 2026-04-18
+**Last Updated:** 2026-04-18
+**Cataloger:** Sven / PAI
+**Review Status:** Initial
+
+---
+
+## Bibliographic Information
+
+### Title Statement
+- **Main Title:** Lobbyregister für die Interessenvertretung gegenüber dem Deutschen Bundestag und der Bundesregierung
+- **Abbreviated Title:** Lobbyregister Bundestag
+- **URL:** https://www.lobbyregister.bundestag.de/startseite
+
+### Responsibility Statement
+- **Publisher/Issuing Body:** Deutscher Bundestag
+- **Legal Basis:** Lobbyregistergesetz (LobbyRG) — in Kraft seit 1. Januar 2022
+- **Contact:** lobbyregister@bundestag.de
+
+### Publication Information
+- **Date of First Publication:** 1. Januar 2022 (gesetzliche Pflicht)
+- **Publication Frequency:** Continuous (Registrierungen laufend aktualisiert)
+- **Current Status:** Active
+
+---
+
+## Content Description
+
+### What it contains
+
+The Lobbyregister is the official mandatory register for all organizations and individuals engaged in lobbying activities directed at the German Bundestag or the Federal Government. Registration is legally required under the LobbyRG.
+
+**Key data fields per registrant:**
+- Organization name, legal form, address
+- Contact persons and authorized representatives
+- **Annual lobbying expenditure** (Aufwendungen für Interessenvertretung)
+- **Number of employees** working on lobbying
+- **Policy areas** of lobbying activity (Themenfelder)
+- **Clients** (if lobbying on behalf of third parties)
+- **Donations and memberships** above threshold amounts
+- **Financial connections** to public bodies
+
+### Coverage
+- ~5,000+ registered entities (as of 2024)
+- Covers: corporations, industry associations (Verbände), NGOs, law firms, PR agencies, think tanks, trade unions, churches, foreign governments
+- **Mandatory since 2022** — prior voluntary registration was far less complete
+
+---
+
+## Substrate Relevance
+
+### Problems Addressed
+- **PR-00002 (Illegitimate Domination):** The register makes visible who is actively attempting to shape political decisions and at what cost. Lobbying is a mechanism by which organized interests translate economic power into political power — often without public knowledge. Transparency is the precondition for democratic contestation.
+- **PR-00005 (Epistemic Power Concentration):** Think tanks, PR agencies, and industry groups lobby not just for policy but for *frames* — what counts as a problem, what counts as evidence, which solutions are considered legitimate. The register exposes this epistemic lobbying.
+
+### Connection to DE-Plan
+- **de-plan1-sven.md CHALLENGE 1** (epistemic fragmentation) — corporate and lobby influence on media narratives and political discourse is an underexplored dimension of epistemic fragmentation
+- **STRATEGY 2** (epistemic competence) — citizens who understand lobbying structures are better equipped to evaluate political claims
+
+### Potential Dataset: DE-Lobby-Transparency
+Future dataset possibility — extractable metrics from the register:
+| Metric | Description |
+|--------|-------------|
+| Total registered lobbying expenditure | Annual aggregate (€) |
+| Top 10 spenders by sector | Finance, Pharma, Energy, etc. |
+| Expenditure per policy area | Where money concentrates |
+| Growth in registrations YoY | Uptake of transparency regime |
+| Share of foreign vs. domestic registrants | International lobbying flows |
+
+---
+
+## API / Access
+
+- **Search interface:** https://www.lobbyregister.bundestag.de/suche
+- **Download:** Bulk CSV/JSON export available via search export function
+- **API:** No public REST API documented; data accessible via web interface + export
+- **Auth:** None required for public data
+- **Rate limit:** Not documented; scraping-sensitive
+
+---
+
+## Quality Assessment
+
+| Dimension | Rating | Notes |
+|-----------|--------|-------|
+| **Completeness** | Medium | Mandatory since 2022, but enforcement and threshold definitions leave gaps |
+| **Accuracy** | Medium-High | Self-reported; no independent audit mechanism as of 2024 |
+| **Timeliness** | High | Continuous updates required by law |
+| **Comparability** | Low | No equivalent standardized data for pre-2022 period |
+| **Access** | High | Publicly searchable, bulk export available |
+
+**Key limitation:** Expenditure figures are self-reported ranges (not exact amounts), and the definition of "lobbying activity" has been contested, leading to strategic under-reporting by some large actors.
+
+---
+
+## Connections to Other Sources
+
+| Source | Relationship |
+|--------|-------------|
+| DE-Democracy-Metrics (DE-Democracy-Metrics.md) | Lobbying transparency as democracy indicator |
+| PR-00002—Illegitimate_Domination.md | Evidence base for structural power analysis |
+| OR-00004—Mehr_Demokratie_eV.md | Mehr Demokratie advocates for strengthening the LobbyRG |
+| OR-00005—netzpolitik_org.md | netzpolitik.org has reported on lobbyregister gaps and enforcement failures |

KNOWLEDGE-GRAPH.md

@@ -16,6 +16,7 @@
 | Organizations | 5 | OR-00001–OR-00005 |
 | Plans | 2 | us-plan1-miessler, de-plan1-sven |
 | Data | 8 | DE-Common-Metrics, US-Common-Metrics, DE-Democracy-Metrics, US-GDP, US-Inflation, US-Presidential-Approval, Bay-Area-COVID-Wastewater, Knowledge-Worker-Global-Salaries |
+| Data Sources | 11 | DS-00001–DS-00010 (US/Global), DS-00011 (DE Lobbyregister) |
 
 ---
 
@@ -35,6 +36,7 @@
 - **Arguments:** —
 - **Organizations:** OR-00004 (Mehr Demokratie), OR-00005 (netzpolitik)
 - **Plans:** de-plan1-sven (CHALLENGE 1, 2)
+- **Data Sources:** DS-00011 (DE Lobbyregister — makes visible who translates money into political power)
 - **Related Problems:** PR-00004 (Fascization — crisis mode), PR-00005 (Epistemic Power)
 
 ### PR-00003 — Performance Society Exhaustion