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-c8.md

@@ -6,7 +6,7 @@ Topic argument supported (e.g. `/llpsi-c8 hic`, `/llpsi-c8 ille`, `/llpsi-c8 qui
 
 ## Vocabulary (new in Cap. VIII)
 
-**Nouns**: *taberna -ae* f. (shop); *gemma -ae* f. (gem); *margarīta -ae* f. (pearl); *tabernārius -ī* m. (shopkeeper); *ōrnāmentum -ī* n. (ornament); *ānulus -ī* m. (ring); *līnea -ae* f. (string, line); *digitus -ī* m. (finger); *collum -ī* n. (neck); *pretium -ī* n. (price); *sēstertius -ī* m. (sesterce, a coin).
+**Nouns**: *taberna -ae* f. (shop); *gemma -ae* f. (gem); *margarīta -ae* f. (pearl); *tabernārius -ī* m. (shopkeeper); *ōrnāmentum -ī* n. (ornament); *ānulus -ī* m. (ring); *līnea -ae* f. (string, line); *digitus -ī* m. (finger); *collum -ī* n. (neck); *monīle, monīlis* n. (necklace); *pretium -ī* n. (price); *sēstertius -ī* m. (sesterce, a coin).
 
 **Adjectives**: *pecūniōsus -a -um* (wealthy); *gemmātus -a -um* (set with a gem); *medius -a -um* (middle); *quārtus -a -um* (fourth); *tantus -a -um* (so big) ↔ *quantus -a -um* (how big); *alius alia aliud* (other — note neut. sg. nom./acc. **-ud**, not -um!).
 
@@ -64,6 +64,10 @@ Topic argument supported (e.g. `/llpsi-c8 hic`, `/llpsi-c8 ille`, `/llpsi-c8 qui
 
 7. ***tantus...quantus*** correlation: "as big as." *Pretium illīus ānulī tantum est quantum huius.* "The price of that ring is as big as (that) of this one."
 
+8. **Speaker-perspective demonstratives**: *hic* = near the speaker ("this one here"); *ille* = far from speaker / "that one over there." Not just bland this/that — track who is pointing and from where. *Hic ānulus* (the one I'm holding) vs. *ille ānulus* (the one on the far shelf).
+
+9. **Pronominal-adjective class (UNUS NAUTA group)**: *ūnus, sōlus, tōtus, alius, alter, ūllus, neuter, nūllus, uter* — plus demonstratives *ipse, iste, ille, hic* — all share gen. sg. **-īus** and dat. sg. **-ī** for every gender. *ūnīus, sōlīus, tōtīus, alterīus, illīus, ipsīus*; dat. *ūnī, sōlī, illī, ipsī*.
+
 ## Common error patterns
 
 - ***hoc* spelled as *huc* or confused with *hunc***: *hunc* = acc. m. sg.; *hoc* = nom./acc. n. sg. *aspice hunc ānulum* (m. acc.) but *hoc ōrnāmentum* (n. acc.).
@@ -75,6 +79,10 @@ Topic argument supported (e.g. `/llpsi-c8 hic`, `/llpsi-c8 ille`, `/llpsi-c8 qui
 - ***alia* (n. pl.) vs. *aliae* (f. pl. nom.)**: *alia ōrnāmenta* (n. pl. — correct); *aliae feminae* (f. pl. — correct). Watch the gender of the noun.
 - ***hic/ille* agreement with neut. *ōrnāmentum***: *hic ōrnāmentum* — wrong; *hoc ōrnāmentum*. *ille ōrnāmentum* — wrong; *illud ōrnāmentum*.
 - **Forgetting *aut* (or) vs. *et* (and)**: *centum sēstertiōs et nūllōs* — wrong context; should be *aut nūllōs* ("or none").
+- ***quantus* vs. *quot***: *quantus* = "how great/big" (adj., agrees); *quot* = "how many" (indecl., counts). *Quantum pretium?* "How big a price?" vs. *Quot sēstertiī?* "How many sesterces?"
+- ***cuius* vs. *cui***: *cuius* = gen. ("whose"); *cui* = dat. ("to/for whom"). *Cuius est ānulus?* (whose ring is it?) vs. *Cui Iūlius ānulum dat?* (to whom does Julius give the ring?).
+- **Treating *hīs* / *illīs* as only dative OR only ablative**: they are **both** dat. and abl. pl. *hīs servīs dat* (dat.) vs. *cum hīs servīs* (abl.) — same form, different job.
+- **Bland "this/that" for *hic* / *ille***: losing the speaker-perspective. *Hic* points to what's near the speaker; *ille* to what's away. Translate with that contrast in mind.
 
 ## Exercise menu
 
@@ -88,6 +96,10 @@ Topic argument supported (e.g. `/llpsi-c8 hic`, `/llpsi-c8 ille`, `/llpsi-c8 qui
 8. **PENSVM B fill**: "Ānulus convenit ad digitum ___ (4th), quī nōn ___ est ___ digitus medius." → *quārtum, tantus, quantus.*
 9. **PENSVM C Q&A**: "Quot sēstertiīs cōnstat ānulus gemmātus?" → *Centum sēstertiīs (cōnstat).* "Cūr Lydia nūllum ānulum habet?" → *Quia (Lydia / amīcus eius) pecūniōsa nōn est.*
 10. **Translate**: "Julius is the master of these slaves." → *Iūlius dominus hōrum servōrum est.* "I show this gem to that woman." (use 3sg) — better: "Albinus shows this gem to that woman." → *Albīnus huic fēminae hanc gemmam ostendit.*
+11. **Contextual pointing drill**: same frame, switch speaker position. "Albīnus tenet ānulum: '___ ānulus pulcher est!'" → *Hic.* "Albīnus dē ānulō in mēnsā longē: '___ ānulus pulcher est!'" → *Ille.* Force the student to read perspective.
+12. **Oblique-case Q&A**: "*Cuius est hoc monīle?*" → *(Monīle) Lydiae est.* "*Cui Mēdus pecūniam dat?*" → *Tabernāriō / Albīnō dat.* "*Quō cōnstat ānulus?*" → *Centum sēstertiīs (cōnstat).*
+13. **Bargaining mini-dialogue**: combine price + demonstrative + buy/sell. "Lydia: '*Quantum cōnstat hoc monīle?*' Albīnus: '*Centum sēstertiīs.*' Lydia: '*Nimis! Illud emō, nōn hoc.*'" — have student supply the next line or swap roles.
+14. **Rapid-discrimination drill**: flash pairs and ask which fits. *Quis / Quī* + *vir venit?* → *Quī.* *Quid / Quod* + *ōrnāmentum?* → *Quod.* *Cuius / Cui* + *dās mālum?* → *Cui.* *Quantus / Quot* + *sēstertiī?* → *Quot.*
 
 ## Session start