Add Wortschatz & Grammatik A1 Abschnitt A, switch Ergaenzung to per-section filing

Uses the book's own lettered Inhalt structure (Abschnitt A-Q) instead of
per-sub-exercise files, since sub-exercises are often half a page each.
Section A covers Person, Familie und Freunde (pp. 8-18), cross-referenced
against Menschen Lektion 1 and 3.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Ergaenzung/INDEX.md

@@ -7,8 +7,13 @@ Menschen Lektion(en)" column below to cross-reference.
 
 ## Wortschatz & Grammatik A1 (`wortschatz-grammatik-a1/`)
 
-| Einheit | Title/Topic | Relates to Menschen Lektion(en) | Status |
+Filed one section per lettered Abschnitt (matching the book's own Inhalt),
-|---|---|---|---|
+not per tiny sub-exercise (A1, A2 ...) — sub-exercises are summarized
+inside each Abschnitt file instead.
+
+| Abschnitt | Title/Topic | Pages | Relates to Menschen Lektion(en) | Status |
+|---|---|---|---|---|
+| A | [Person, Familie und Freunde](wortschatz-grammatik-a1/abschnitt-a.md) | 8–18 | L1, L3 | done |
 
 ## Hören & Sprechen A1 (`hoeren-sprechen-a1/`)
 

Ergaenzung/_template.md

@@ -1,6 +1,10 @@
-# [Book] — Einheit XX: [Title/Topic]
+# [Book] — Abschnitt X: [Title/Topic]
 
-Pages: [XX–YY]
+Pages: [XX–YY] · Sub-exercises: [e.g. A1–A17]
+
+Note: file one section per book-defined chapter/letter (matching its own
+Inhaltsverzeichnis), not per tiny sub-exercise — summarize sub-exercises
+inside this file's Exercise summary instead.
 
 ## Overview
 

Ergaenzung/wortschatz-grammatik-a1/abschnitt-a.md

@@ -0,0 +1,188 @@
+# Wortschatz & Grammatik A1 — Abschnitt A: Person, Familie und Freunde
+
+Seiten 8–18 (Teil 1 Wortschatz) · Lösungen S. 108–109 · Übungen A1–A17
+
+## Overview
+
+- Skill focus: Wortschatz (vocabulary drill — fill-in-the-blank, matching,
+  sorting exercises; no audio in this book)
+- Topic: greetings, personal/registration info, countries & nationalities,
+  du/Sie, continents, family, physical appearance
+- Relates to *Menschen* Lektion(en): **L1** (greetings, du/Sie, personal
+  info, countries), **L3** (family members — "Das ist meine Mutter").
+  Physical-appearance adjectives (A17) and the full du/Sie usage rules (A10)
+  go **beyond** what Menschen A1.1 covers explicitly — flagged below.
+
+## Vocabulary / Grammar covered
+
+### Begrüßung / Verabschiedung (A2, A3)
+| German | English | Notes |
+|---|---|---|
+| Guten Morgen. | Good morning. | until ~11 Uhr |
+| Guten Tag. | Hello/Good day. | in a shop, 11–18 Uhr |
+| Grüß Gott. | Hello. | Austria & southern Germany |
+| Grüezi. | Hello. | Switzerland |
+| Hallo./Hi. | Hi. | informal, young people |
+| Servus. | Hi. / Bye. | Austria/southern Germany, both greeting & farewell |
+| Tschau./Tschüs. | Bye. | informal |
+| (Auf) Wiedersehen. | Goodbye. | formal / in a shop |
+| Gute Nacht. | Good night. | ~22 Uhr onward |
+| Bis bald. | See you soon. | |
+
+### Anmeldeformular / persönliche Angaben (A4–A7)
+| German | English | Notes |
+|---|---|---|
+| der Familienname, -n | surname | |
+| der Vorname, -n | first name | |
+| das Geburtsdatum, -en | date of birth | |
+| die Nationalität, -en | nationality | |
+| die Straße, -n | street | |
+| die Hausnummer, -n | house number | |
+| die Postleitzahl, -en | postal code | |
+| der Wohnort, -e | place of residence | |
+| die Unterschrift, -en | signature | |
+| der Familienstand | marital status | ledig/verheiratet/geschieden |
+| ledig | single | |
+| verheiratet | married | |
+| geschieden | divorced | |
+| der Geburtsort, -e | place of birth | |
+| männlich / weiblich | male / female | Geschlecht |
+| verwandt | related | |
+| buchstabieren | to spell | Können Sie den Namen buchstabieren? |
+
+### Länder und Leute (A8, A9)
+| German | English | Notes |
+|---|---|---|
+| die Schweiz | Switzerland | takes article; der Schweizer / die Schweizerin; schweizerisch |
+| Österreich | Austria | no article; der Österreicher / die Österreicherin; österreichisch |
+| Deutschland | Germany | no article; der Deutsche / die Deutsche; deutsch |
+| die Türkei | Turkey | takes article |
+| der Iran / der Irak | Iran / Iraq | takes article |
+| die USA (Pl) | USA | plural, takes article |
+| die Niederlande (Pl) | Netherlands | plural, takes article |
+
+### Kontinente (A11)
+Amerika, Europa, Asien, Afrika, Australien.
+
+### Familie (A12–A14)
+| German | English | Notes |
+|---|---|---|
+| der Vater, -̈ | father | |
+| die Mutter, -̈ | mother | |
+| der Sohn, -̈e | son | |
+| die Tochter, -̈ | daughter | |
+| der Großvater, -̈ | grandfather | |
+| die Großmutter, -̈ | grandmother | |
+| das Baby, -s | baby | takes **das** despite being a person |
+| der Hund, -e | dog | |
+| die Eltern (Pl) | parents | plural only |
+| der Bruder, -̈ | brother | |
+| die Schwester, -n | sister | |
+
+### Personenbezeichnungen, männlich/weiblich (A13)
+| männlich | weiblich |
+|---|---|
+| der Herr | die Dame |
+| der Junge (A: der Bub) | das Mädchen |
+| der Ehemann | die Ehefrau |
+| der Freund | die Freundin |
+| der Partner | die Partnerin |
+
+### Kontakte — nützliche Verben (A16)
+| German | English | Notes |
+|---|---|---|
+| kennen | to know (a person) | Ich kenne dich seit ... |
+| sich sehen | to see each other | Wann sehen wir uns? |
+| mögen | to like | |
+| gern haben | to be fond of | |
+| gefallen | to please/appeal | Hat dir der Film gefallen? |
+| sich interessieren für | to be interested in | Was interessiert ihn? |
+| anrufen | to call (phone) | separable |
+| schicken | to send | eine SMS schicken |
+| bekommen | to receive | |
+
+### Aussehen — Adjektivpaare (A17) — *beyond Menschen A1.1*
+schön ↔ hässlich, jung ↔ alt, klein ↔ groß, dick ↔ dünn, lang ↔ kurz.
+
+## Grammar (Tipp-Boxen in diesem Abschnitt)
+
+- **Nomen schreibt man groß**, und man lernt sie am besten mit Artikel +
+  Plural: die Straße, die Straßen; die Stadt, die Städte; das Land, die
+  Länder.
+- **Länder ohne Artikel** (most countries): Österreich, Deutschland,
+  Frankreich, Italien, Brasilien, Russland, Japan ...
+  **Länder mit Artikel**: die Schweiz, die Türkei, der Iran, der Irak, die
+  USA (Pl), die Niederlande (Pl).
+- **Genus bei Personen**: weibliche Personen → **die** (die Frau, die
+  Freundin, die Tochter); männliche Personen → **der** (der Mann, der
+  Freund, der Sohn). Ausnahme: **das** Baby, **das** Mädchen (grammatical
+  neuter despite natural gender).
+- **du oder Sie?** — im Zweifel **Sie** sagen (immer höflich; man kann
+  später zum Du wechseln). Rule of thumb from A10: colleagues often use
+  du; boss↔employee often Sie; children to strangers always Sie; young
+  people (under ~25) to each other du; strangers over 25 to each other Sie;
+  friends always du; adults to children/teens (up to ~15) du; students to
+  students du. This is more explicit than anything *Menschen* A1.1 spells
+  out directly.
+
+## Exercise summary
+
+1. **A1 Guten Tag** — fill in greeting-scene dialogue vocab (Tag, Name,
+   Frau, Kollege, heißt/heiße/bin).
+2. **A2 Hallo …** — match greeting phrases to time-of-day/region.
+3. **A3 … und Tschüs** — match farewell phrases to situation.
+4. **A4 Anmeldeformular** — label the fields of a registration form.
+5. **A5 Der Name – die Namen** — give definite article + plural for 8
+   nouns from the form.
+6. **A6 Wie ist Ihr Name?** — complete a registration interview dialogue
+   (fill correct verb forms).
+7. **A7 Zur Person** — odd-one-out (which word doesn't belong).
+8. **A8 Land und Leute** — complete country/nationality/adjective triples
+   for Switzerland, Austria, Germany.
+9. **A9 Ich** — personal fact sheet to fill in about yourself (open task).
+10. **A10 Du oder Sie?** — tick du or Sie for 8 social situations.
+11. **A11 Kontinente** — label the 5 continents.
+12. **A12 Familienfoto** — label 8 family members in a photo.
+13. **A13 Herr/Dame etc.** — pair male/female personal nouns.
+14. **A14 Meine Familie** — multiple-choice sentence completion (family).
+15. **A15 Einladungskarte** — put a birthday-invitation letter's sentences
+    in the right order.
+16. **A16 Kontakte** — two fill-in dialogues about friendship/contact,
+    correct verb forms required.
+17. **A17 Wie sehen sie aus?** — label 5 opposite-adjective pairs
+    describing appearance.
+
+## Answer key highlights
+
+- A1: *Tag; Name; Frau* / *Kollege; Freut mich; guten; Tag* / *bin; heißt;
+  heiße* / *Entschuldigung; Ihr; Arbeiten*
+- A4: Familienname, Vorname, Geburtsdatum, Nationalität, Straße,
+  Hausnummer, Postleitzahl, Wohnort (Stadt), Land, Telefonnummer, E-Mail,
+  Beruf, Unterschrift.
+- A8: Schweiz/Schweizer/Schweizerin/schweizerisch;
+  Österreich/Österreicher/Österreicherin/österreichisch;
+  Deutschland/Deutscher/Deutsche/deutsch.
+- A10: du, Sie, Sie, du, Sie, du, du, du (in the order of the 8 situations
+  listed above).
+- A12: der Vater, die Tochter, das Baby, die Mutter, die Großmutter, der
+  Sohn, der Hund, der Großvater.
+- A15 order: a) → e) → d) → c) → b).
+- A17: schön–hässlich, jung–alt, klein–groß, lang–kurz, dick–dünn.
+
+Full answer text for all 17 sub-exercises is in the source PDF at pp.
+108–109 if a specific one needs checking beyond what's summarized here.
+
+## Notes / gotchas
+
+- **This book has its own built-in Lösungen** (answer key) at the back of
+  the PDF — no separate answer-key document needed for this series.
+- **A10 (du/Sie) and A17 (appearance adjectives) go beyond Menschen A1.1's
+  explicit scope** — fine to use for extra vocabulary, but don't assume
+  this level of nuance on du/Sie usage has been "taught" via Menschen
+  alone.
+- **das Baby, das Mädchen** are grammatically neuter despite referring to
+  people with natural gender — worth flagging in exercises since it
+  contradicts the die-Frau/der-Mann pattern just taught.
+- Regional variants noted throughout: A = Austria, CH = Switzerland (e.g.
+  Bub for Junge in Austria, Velo for Fahrrad in Switzerland — general
+  pattern used across the whole book, not just this section).

README.md

@@ -104,19 +104,24 @@ structure would misrepresent that, so they get their own space instead:
 
 ```
 Ergaenzung/
-  wortschatz-grammatik-a1/einheit-XX.md
+  wortschatz-grammatik-a1/abschnitt-X.md
-  hoeren-sprechen-a1/einheit-XX.md
+  hoeren-sprechen-a1/abschnitt-X.md
-  lesen-schreiben-a1/einheit-XX.md
+  lesen-schreiben-a1/abschnitt-X.md
   _template.md   ← template for these files
-  INDEX.md       ← per-book tables mapping each unit to Menschen Lektion(en)
+  INDEX.md       ← per-book tables mapping each section to Menschen Lektion(en)
 ```
 
-Each `einheit-XX.md` is scoped like a lesson file (vocab/grammar covered,
+Each `abschnitt-X.md` covers one lettered section as defined by that book's
-exercise summary, audio transcript if applicable, answer key highlights,
+own table of contents (e.g. Wortschatz & Grammatik A1's "A Person, Familie
-notes) but adds a **"Relates to Menschen Lektion(en)"** field so a tutor
+und Freunde", which itself bundles ~17 small sub-exercises) — not one file
-session can tell whether content is reinforcing what's already been covered
+per tiny sub-exercise, since those are often half a page each. It's scoped
-in *Menschen* or introducing something new/out-of-scope.
+like a lesson file (vocab/grammar covered, exercise summary, audio
+transcript if applicable, answer key highlights, notes) but adds a
+**"Relates to Menschen Lektion(en)"** field so a tutor session can tell
+whether content is reinforcing what's already been covered in *Menschen*
+or introducing something new/out-of-scope. These books also ship their own
+built-in Lösungen (answer key), so no separate answer-key source is needed.
 
-Workflow for adding a unit: same as adding a *Menschen* lesson (get the
+Workflow for adding a section: same as adding a *Menschen* lesson (get the
-pages as PDF/photo, Claude summarizes into `einheit-XX.md` using
+pages as PDF/photo, Claude summarizes into `abschnitt-X.md` using
 `Ergaenzung/_template.md`, review, update `Ergaenzung/INDEX.md`, commit).