Fill coverage gaps in chapters 1-11

Audited each chapter file against actual LLPSI Familia Romana content
using parallel reviewers (Claude general-purpose subagents, codex, gemini).
Each chapter gained missing vocabulary, grammar points, common-error
patterns, and exercise types. ~190 lines added across 11 files.

Highlights per chapter:
- c1: geography proper nouns, -us fem. exceptions, num-question answer pattern
- c2: -er paradigm contrast (puer/vir/liber), -que rewrite drill
- c3: interrog. vs. relative quem, neque rewrite
- c4: nullus/UNUS NAUTA, -ius vocative, eius/suus contrast
- c5: relative pron. (nom.), suus agreement, -ae ambiguity
- c6: passus 4th-decl preview, mille/milia, autem postpositive
- c7: cui drill, plenus + gen., quod (because/relative/interrog.) trap
- c8: hic/ille discourse force, UNUS NAUTA class, quantus/quot trap
- c9: stem recovery from gen., ipse emphasis target, sub + abl. for location
- c10: fera vs. ferus, abesse/adesse/ire infinitives, quia/quod synonymy
- c11: full posse paradigm, dat. of reference (mihi dolet), gaudere syntax

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

llpsi-c1.md

@@ -11,6 +11,14 @@ If invoked with a topic argument (e.g. `/llpsi-c1 nominative`), focus on that. O
 - *īnsula -ae* f. (island); *prōvincia -ae* f.; *littera -ae* f. (letter of alphabet); *grammatica -ae* f.; *syllaba -ae* f.
 - *oppidum -ī* n. (town); *imperium -ī* n.; *vocābulum -ī* n. (word); *capitulum -ī* n. (chapter); *exemplum -ī* n.; *pēnsum -ī* n.
 
+**Geography proper nouns**:
+- Continents: *Eurōpa -ae* f.; *Asia -ae* f.; *Āfrica -ae* f.
+- Countries/regions: *Hispānia, Gallia, Germānia, Graecia, Italia, Syria, Arabia* (all -ae f.)
+- Islands/provinces: *Crēta -ae* f.; *Rhodus -ī* f. (-us but **fem.**); *Sicilia, Sardinia, Britannia* (-ae f.)
+- Oppida: *Brundisium -ī* n.; *Tūsculum -ī* n.; *Sparta -ae* f.
+- Fluviī: *Nīlus, Rhēnus, Dānuvius* (all -ī m.); *Tiberis* — 3rd-decl., recognition only
+- *Aegyptus -ī* **f.** (cities/islands convention — -us but feminine)
+
 **Adjectives** (1st/2nd decl. -us -a -um):
 - *magnus, parvus, multī (pl. only sense), paucī, Graecus, Rōmānus, Latīnus, prīmus, secundus, tertius*
 
@@ -18,7 +26,7 @@ If invoked with a topic argument (e.g. `/llpsi-c1 nominative`), focus on that. O
 
 **Verbs**: *est, sunt* only.
 
-**Particles & function words**: *in* (+ abl.), *et, sed, nōn, quoque, -ne?, num...?, ubi?, quid?*
+**Particles & function words**: *in* (+ abl.), *et, sed, aut, nōn, quoque, -ne?, num...?, ubi?, quid?*
 
 **Other**: *singulāris, plūrālis*
 
@@ -45,6 +53,14 @@ If invoked with a topic argument (e.g. `/llpsi-c1 nominative`), focus on that. O
 
 6. **Word order**: subject + complement + *est/sunt* is most common, but Ørberg shuffles for emphasis. Don't penalize a different (grammatical) order.
 
+7. ***-us* gender exceptions**: *Aegyptus, Rhodus, Corinthus* are **feminine** (cities/islands convention). Adj. must be fem.: *Aegyptus magna est*, not *\*magnus*.
+
+8. **3rd-decl. proper nouns** (*Tiberis, Carthāgō*): recognition only — full declension comes in Cap. IX.
+
+9. ***-ne* placement**: appended to the **focused** word (often the verb), not always literally first. *Estne...?* is common but *Italiāne...?* etc. are valid.
+
+10. ***num*-question answer pattern**: expects a **negative** answer. *Num Italia in Āfricā est? — Nōn est.* (not *Ita*).
+
 ## Common error patterns to call out
 
 - **Wrong gender ending on adjective**: e.g. student writes *īnsula magnus* — explain that *īnsula* is feminine, so the adj. must be *magna*; the *-us* form is masculine.
@@ -52,6 +68,9 @@ If invoked with a topic argument (e.g. `/llpsi-c1 nominative`), focus on that. O
 - ***-a* ambiguity**: *-a* could be 1st-decl. fem. nom. sg. OR 2nd-decl. neut. nom. pl. Use context (singular vs. plural verb, accompanying adjective form) to disambiguate.
 - **in + nominative**: if student writes *in Italia* (without macron) intending the place, accept it but note that the abl. *Italiā* has a long *ā* and the macron matters in writing.
 - **Macrons**: accept answers without macrons; mention the correct macron once per session, not every time.
+- **Treating *Aegyptus* as masculine**: produces *\*Aegyptus magnus*; correct is *Aegyptus magna* (cities/islands fem.).
+- **Mis-answering *num*-questions affirmatively**: saying *Ita* instead of *Nōn* — *num* primes a negative answer.
+- **Confusing *quid?* (what) with *ubi?* (where)**: *Quid est Nīlus?* → *fluvius*; *Ubi est Nīlus?* → *in Āfricā*.
 
 ## Exercise menu (rotate)
 
@@ -61,6 +80,9 @@ If invoked with a topic argument (e.g. `/llpsi-c1 nominative`), focus on that. O
 4. **Inflect**: "Give the plural of *oppidum magnum*." → *oppida magna.*
 5. **Spot the error**: "Crēta et Rhodus īnsulae magnus sunt." → *magnae* (must agree pl. fem.).
 6. **English → Latin (limited, since student is in natural-method mode)**: "How do you say 'Italy is in Europe' in Latin?" — only use sparingly.
+7. **Map/geography Q&A**: "Quid est Nīlus?" → *fluvius*; "Ubi est Nīlus?" → *in Āfricā*. Mix *quid?* and *ubi?*.
+8. ***num*-answer-shape drill**: pose a *num*-question; student must produce a negative answer (*Nōn est* / *... nōn est*).
+9. **Singular ↔ plural transformation**: *fluvius magnus est → fluviī magnī sunt*; *oppidum parvum est → oppida parva sunt*.
 
 ## Session start