culture(sachsen_anhalt): author Sachsen-Anhalt sub-national culture package -- Bauhaus + Reformation legacy (ADR-001)

[ChBrain]

Context

ADR-001 (#461), SH (#467) as template. Research folded into authoring. This issue applies the pattern to Sachsen-Anhalt.

Bundesland: Sachsen-Anhalt

• ISO 3166-2: DE-ST
• Capital: Magdeburg
• Population: ~2.2M
• Distinctive elements: Composed 1947 from Provinz Sachsen (Preußen) + Anhalt-Dessau. Reformation Wittenberg 1517 (Luther's 95 Theses on the Schlosskirche door is the founding moment of European Protestantism). Bauhaus Dessau 1925 (Walter Gropius moved Bauhaus from Weimar to Dessau, where it produced its most iconic work). Universität Halle-Wittenberg (1502, Luther's university). Quedlinburg (UNESCO old town, Heimat der ersten deutschen Königin Mathilde). Magdeburg as Otto's-Reich-Hauptstadt im Mittelalter. Strong post-1990 deindustrialisation; one of the demographically most challenged Bundesländer; AfD-Hochburg.

Languages / dialects

• Anhaltisch -- the dialect of the historical Anhalt-Land around Dessau/Köthen
• Thüringisch-Obersächsisch -- in the south (Halle, Magdeburg area)
• Niederdeutsch / Plattdeutsch -- in the northern parts (Altmark)
• Hochdeutsch (standard)

Suggested file set

• culture_german_st_position.md
• culture_german_st_position_language_anhaltisch.md (or merge with Thüringisch-Obersächsisch if scope is tight)
• culture_german_st_piece_history.md -- yearbook: Otto I. + Magdeburger Reich 962, Quedlinburg + Mathilde, Reformation Wittenberg 1517, Bauhaus Dessau 1925, 1945 SBZ → 1949 DDR-Bezirke Magdeburg/Halle, Wiedervereinigung 1990 → Bundesland Sachsen-Anhalt, post-1990 demographic decline
• culture_german_st_piece_<X>.md -- candidates: das Bauhaus Dessau (UNESCO -- the most architecturally consequential Bundesland-piece), Lutherstadt Wittenberg + die 95 Thesen (UNESCO), Quedlinburg (UNESCO Altstadt), die Salzgewinnung Halle
• culture_german_st_place_<X>.md -- candidates: Magdeburg (Capital), Wittenberg (Reformation), Dessau-Roßlau (Bauhaus + Anhaltische Identität), Halle (Saale-Universitätsstadt + chemische Industrie)
• culture_german_st_process_<X>.md -- candidates: das Reformations-Disput-Verfahren (Wittenberger Tradition), die Anhaltische Gelassenheit, the Strukturwandel-Versteh-Praxis
• german_st_persona_<gender>_<name>.md -- 2 minimum

Branch and lane

• Branch: culture/sachsen_anhalt
• Lane: culture (sub-national), base culture/release

Dependencies

• ADR-001 (chore(docs): split architecture/technical + 3 ADRs (sub-national, language subchapter, multi-variety) #461), governance governance: extend branch_scope for sub-national culture branches (ADR-001 step 2) #462–governance: build_zips, build_pdfs, release-gating workflow extensions for sub-cultures (ADR-001 step 5) #465, sync main→release

Acceptance criteria

• v2-strict, no Hofstede bag, L1a-L4h green, depth matches culture(schleswig_holstein): author the first sub-national culture package (ADR-001 step 7) #467

Estimated size

Medium -- ~1500-2200 lines.

Notes for the agent

• Wittenberg + Bauhaus + Quedlinburg make ST disproportionately UNESCO-dense for its size -- the cultural-historical weight is much larger than the contemporary economic weight.
• Reformation 1517 in Wittenberg is one of the world-history events that happened here. The position should connect this to contemporary Sachsen-Anhalt's protestant tradition without overclaiming.
• Bauhaus Dessau (1925-1932) produced the architectural-design language of 20th-century modernism. Worth naming as proud-but-melancholic legacy (the Bauhaus was forced to relocate to Berlin in 1932, closed by Nazis in 1933).
• The Anhaltische Gelassenheit is a real local self-description (the small Anhalt-Land between bigger powers learned a particular type of patience).
• Post-1990 demographic decline + AfD presence are part of contemporary reality -- name them honestly.

[ChBrain]

Architecture correction per ADR-001 v0.2 (PR #461): each sub-culture ships its own hofstede_bag.yaml + hofstede_decisions.md. Only Hofstede scores inherit from Germany. The bag carries Bundesland-specific voice-steering markers. The acceptance criterion "no Hofstede bag" in this issue's body is superseded by ADR-001 v0.2. Derived-test tolerance is widened (±15) or replaced by bag-presence-only variant for sub-cultures (governance issue #464).

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