Improve and complete all E* (Technische Kenntnisse, class E) explanations

Rewrite every class-E technical explanation to the relaxed, tutoring
standard: explain *why* the correct answer is correct, give the physics,
include formulas in inline LaTeX, and gloss German exam terms with their
common English equivalents (Hub/Frequenzhub = deviation, Sperrkreis =
trap, Raumwelle = sky wave, LC, etc.).

- All 463 E* entries now revised from the real catalog questions
  (answer_a = correct upstream); previously only 216 had been touched.
- Every revision bumped by exactly 1; no confidence ever lowered.
- Sources stay tier-appropriate (50ohm.de for technique, gesetze /
  BImSchV / BEMFV for the legal person-protection items).
- Emphasis uses <u>..</u> (the only sanctioned inline markup), not
  markdown asterisks.
- Fixed three carried-over nits: reverted off-scope VD709, and reset
  EE301/EE306 revisions (1->3) to a correct single +1.

Validated: schema clean, all keys present in the live catalog, balanced
LaTeX, no display math, no stray HTML. Full suite passes (27 tests,
including the live catalog-match test).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
2026-06-04 21:47:42 +02:00
parent 3ce060947d
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