apply answerability-audit repair queue: ACCEPT variants, derivability fixes, rubric rewrites (46 masters)

- MISSING_ALTERNATIVES (63/64 applied): uncontracted/contracted forms, digit
  variants (05|5), synonyms and full-sentence variants, via ACCEPT lines and
  inline gap alternatives; skipped 'better/fine' for the Opposites drill (not
  opposites of "sick").
- NOT_DERIVABLE (16 fixed, 10 false alarms, 1 skipped): item-level fixes
  (visible word hints, missing premise, speaker clarifications "Joe (to Jim):",
  emphasis/cue corrections, un-gapped unguessable words, rounded-number
  accepts); converted the two book-10 paragraph clozes (Mary / The Mall) from
  CHECK: exact to CHECK: llm with logical-completion rubrics; cross-book
  recycled vocab (pilot, teller, barber, variety store, ...) left alone.
- UNCLEAR_TARGET (10): instruction/intro corrections (Food "Type the word for
  the food.", Explain-with-Too intro), cue/emphasis fixes.
- Rubric rewrites (57): applied audit-suggested grader rubrics (now effective
  with the pre-item RUBRIC parser fix); moved the two per-item rubrics of
  book-11 "Write the Main Idea" inside their items.

No clip-bearing line changed; all masters validate (0 errors, 0 new warnings)
and pass stage-master clip-identity checks. Full decision log:
reactor-module-tools module-convert/answerability-audit/APPLIED.md

Co-authored-by: Cursor <cursoragent@cursor.com>

book-5-lesson-1.module

@@ -1514,7 +1514,7 @@ ACCEPT: December 3rd | December 3
 TEMPLATE: Linda's visit is on ____
 PROMPT: "Linda's visit is in June." What's the date? {bk05-l1d-f4-02-q.mp3}
 RESPONSE: Linda's visit is on June 2nd. {bk05-l1d-f4-02-a.mp3}
-ACCEPT: June 2nd | June 2
+ACCEPT: June 2nd | June 2 | June the 2nd
 
 TEMPLATE: Sam's visit is on ____
 PROMPT: "Sam's visit is in March." What's the date? {bk05-l1d-f4-03-q.mp3}
@@ -1524,12 +1524,12 @@ ACCEPT: March 11th | March 11
 TEMPLATE: Kathy's visit is on ____
 PROMPT: "Kathy's visit is in May." What's the date? {bk05-l1d-f4-04-q.mp3}
 RESPONSE: Kathy's visit is on May 7th. {bk05-l1d-f4-04-a.mp3}
-ACCEPT: May 7th | May 7
+ACCEPT: May 7th | May 7 | May the 7th
 
 TEMPLATE: Ted's visit is on ____
 PROMPT: "Ted's visit is in September." What's the date? {bk05-l1d-f4-05-q.mp3}
 RESPONSE: Ted's visit is on September the 1st. {bk05-l1d-f4-05-a.mp3}
-ACCEPT: September 1st | September 1
+ACCEPT: September 1st | September 1 | September the 1st | 1st September | 1 September | 1st of September
 
 # Source: ST §About Order
 $DIALOGUE About Order