Break A and E technical into subdecks

README.md

@@ -21,7 +21,12 @@ Output: seven `.apkg` files under `anki/`.
 Vorschriften get one deck each (shared across all license classes);
 Technische is split per class into three decks (N / E / A) following
 the catalog's `class` field. A class-A candidate who wants every
-Technische question imports all three Technische decks.
+Technische question imports all three Technische decks. The E (463)
+and A (716) decks are large pools, so each ships as a deck *tree* —
+one sub-deck per first-level exam topic under `Technische Kenntnisse::E`
+/ `::A` — so you can study them topic by topic instead of as one giant
+deck. Each is still a single `.apkg`; N (195) stays flat (small enough
+that sub-decks would add clutter without helping).
 
 **Two glossary decks** of radio shorthand — Q-groups and operating
 abbreviations, and technical/HAM abbreviations — built from curated
@@ -45,18 +50,23 @@ belongs to:
 
 **Technical (one deck per license class):**
 
-| Class | Section name              | ID prefix | Questions |
-|-------|---------------------------|-----------|----------:|
-| N     | Technische Kenntnisse (N) | `N*`      |       195 |
-| E     | Technische Kenntnisse (E) | `E*`      |       463 |
-| A     | Technische Kenntnisse (A) | `A*`      |       716 |
+| Class | Section name              | ID prefix | Questions | Layout |
+|-------|---------------------------|-----------|----------:|--------|
+| N     | Technische Kenntnisse (N) | `N*`      |       195 | one flat deck |
+| E     | Technische Kenntnisse (E) | `E*`      |       463 | 11 topic sub-decks |
+| A     | Technische Kenntnisse (A) | `A*`      |       716 | 11 topic sub-decks |
 
 Counts are from the current edition (3. Auflage, März 2024; ~1750
-questions total). The license tiers are cumulative for the exam:
+questions total). The class-E and class-A decks are each split into one
+sub-deck per first-level exam topic (the 11 catalog subsections —
+*Bauteile*, *Sender und Empfänger*, *Antennen …*, etc.) because those
+pools are unwieldy as a single deck; each is still one `.apkg`
+containing a deck tree. Anki sorts those sub-decks alphabetically on
+import, not in exam order. The license tiers are cumulative for the exam:
 a class-E candidate is responsible for `N*` + `E*` + `B*` + `V*`;
 a class-A candidate is responsible for everything. Filter inside
-Anki by deck, by the `klasse-N|E|A` tag, or by the `Number` field
-prefix.
+Anki by deck, by the `klasse-N|E|A` tag, or — for the topic within a
+deck — by the `pfad-*` tag, or by the `Number` field prefix.
 
 ## Glossary decks