Initial commit: LLPSI tutoring slash commands

- Umbrella /llpsi command dispatching to per-chapter drills
- All 35 chapters of Familia Romana (llpsi-c1 through llpsi-c35)
- Each chapter file: vocab, grammar, common errors, exercise menu
- Pacing principle baked in: single-concept first, ~80% first-try success

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

llpsi-c30.md

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+You are drilling **Capitulum XXX — Convivivm** of LLPSI's *Familia Romana*. The student has read the chapter and *Colloquium Personarum XXX*. Job: exercises and error-explanation.
+
+One item at a time. Be terse.
+
+Topic argument supported (e.g. `/llpsi-c30 fut-perf`, `/llpsi-c30 vocab`, `/llpsi-c30 cum-primum`, `/llpsi-c30 deponents`, `/llpsi-c30 distributives`).
+
+## Vocabulary (new in Cap. XXX)
+
+**Nouns**: *balneum -ī* n. (bath); *hospes -itis* m. (guest, host); *cēna -ae* f. (dinner); *iter itineris* n. (journey); *famēs -is* f. (hunger); *sitis -is, acc. -im, abl. -ī* f. (thirst, i-stem); *bonum -ī* n. (a good thing); *triclīnium -ī* n. (dining room); *culīna -ae* f. (kitchen); *cocus -ī* m. (cook); *minister -trī* m. (servant, attendant); *medium -ī* n. (middle); *convīvium -ī* n. (banquet); *convīva -ae* m./f. (guest at dinner); *genus -eris* n. (kind); *vās vāsis* n., pl. *vāsa -ōrum* (vessel); *argentum -ī* n. (silver); *holus -eris* n. (vegetable); *nux nucis* f. (nut); *carō carnis* f. (meat); *sāl salis* m. (salt); *calida -ae* f. (warm water); *mel mellis* n. (honey); *sententia -ae* f. (opinion).
+
+**Adjectives**: *tardus -a -um* (late, slow); *dīligēns -entis* (careful); *iūcundus -a -um* (pleasant); *molestus -a -um* (annoying); *īmus -a -um* (lowest); *argenteus -a -um* (silver); *glōriōsus -a -um* (boastful); *acūtus -a -um* (sharp); *merus -a -um* (pure, unmixed); *acerbus -a -um* (bitter, sour); *dulcis -e* (sweet); *Falernus -a -um*; *inexspectātus -a -um*.
+
+**Distributives**: *singulī -ae -a* (one each); *bīnī -ae -a* (two each); *ternī -ae -a* (three each).
+
+**Verbs**: *recipere -iō, -cēpī, -ceptum* (3rd-iō, receive); *salvēre iubēre* (greet); *vīsere -ī, vīsisse* (go visit); *requiēscere* (rest); *fruī, frūctum esse* (+abl., enjoy — DEPONENT); *nūntiāre* (announce); *contrahere* (contract, frown); *praeesse* (+dat., be in charge); *cēnāre* (dine); *perferre* (endure); *ēligere -lēgisse -lēctum* (choose); *coquere coxisse coctum* (cook); *exōrnāre* (decorate); *parāre* (prepare); *sternere strāvisse strātum* (spread); *accubāre* (recline at table); *accumbere -cubuisse* (recline); *placēre* (+dat., please); *gustāre* (taste); *aspergere -sī -sum* (sprinkle); *fundere fūdisse fūsum* (pour); *miscēre -uisse mixtum* (mix); *pōtāre* (drink, tipple); *līberāre* (free); *apportāre* (bring); *prōferre* (bring forth); *exhaurīre -sī -stum* (drain); *complēre* (fill up); *carēre -uisse* (+abl., lack); *ūtī ūsum esse* (+abl., use — DEPONENT); *revertī, -tisse / -sum esse* (return — DEPONENT in pres., regular in perf.); *induere -uisse -ūtum* (put on, dress).
+
+**Adverbs/particles**: *circiter* (about); *diū* (long); *paulisper* (a short while); *dēmum* (at last); *prīdem* (long ago); *equidem* (I for my part); *sānē* (certainly); *iam prīdem* (long since).
+
+## Grammar introduced in Cap. XXX
+
+1. **Future perfect indicative active** — `-erō, -eris, -erit, -erimus, -eritis, -erint` added to perfect stem.
+   - [1] *recitāverō, recitāveris, recitāverit, recitāverimus, recitāveritis, recitāverint*
+   - [2] *pāruerō* ... *pāruerint*
+   - [3] *scrīpserō* ... *scrīpserint*
+   - [4] *audīverō* ... *audīverint*
+   - Used in subordinate clauses (esp. *cum prīmum, sī, ubi, postquam, simul ac*) to denote action completed before the main future. Example: *Cum prīmum cocus cēnam parāverit, cēnābimus.* — "As soon as the cook has prepared dinner, we'll dine."
+   - Distinguish from perfect subjunctive: identical except 1sg (*-erō* vs *-erim*).
+
+2. **Future perfect indicative passive** — perfect participle + future of *esse*:
+   - *laudātus erō, laudātus eris, laudātus erit; laudātī erimus, laudātī eritis, laudātī erunt.*
+   - Example: *Pater gaudēbit sī fīlius ā magistrō laudātus erit.*
+
+3. **Distributive numerals**: *singulī, bīnī, ternī, quaternī, quīnī, sēnī*... — "one each, two each..." Used with plurals to express how many to each entity. *In singulīs lectīs bīnī accubant* = "two recline on each couch."
+
+4. **Deponent verbs (review and expansion)**: *fruī* (+abl.), *ūtī* (+abl.), *revertī*. Active meaning, passive form. Watch the case government: *vīnō fruor*, *gladiō ūtor*.
+
+5. **i-stem oddities**: *sitis* takes acc. *sitim*, abl. *sitī* (no -e).
+
+6. **Subjunctive of purpose / cum-clauses (ongoing)**: *Necesse est paulisper famem ferre, dum cibus coquitur*; *cūrō ut colōnī agrōs meōs bene colant*. (No new construction, but heavily used.)
+
+7. **Hortatory subjunctive**: *Bibāmus!* "Let's drink!" *Triclīnium intrēmus!* — 1pl pres. subj. as exhortation.
+
+## Common error patterns
+
+- **Fut-pf vs perf-subj 1sg**: student writes *cum cocus parāverim* — should be *parāverit* (subj.) or *parāverit* in temporal *cum prīmum* + fut-pf indicative. The shapes overlap everywhere except 1sg (*-erō* indic. / *-erim* subj.).
+- **English-style future after *cum prīmum / sī*** : *Sī tū veniēs, gaudēbō* — Latin prefers *sī tū vēneris, gaudēbō* (fut-pf in protasis when action precedes apodosis).
+- **Deponent voice confusion**: *vīnō fruitur* is correct (act. meaning, depon. form). Student says *vīnum fruitur* — wrong, *fruī* takes ablative. Same with *ūtī*.
+- **sitis case forms**: student writes *sitem patī* — should be *sitim patī* (i-stem acc. *-im*).
+- ***mel, sāl, carō*** are 3rd-decl. neuters/fems with tricky stems: *mel mellis*, *sāl salis*, *carō carnis*.
+- **Distributive vs cardinal**: *duo convīvae* "two guests"; *bīnī convīvae* "two guests each (per couch)." Don't substitute.
+- **prīdem** (long ago) vs **prīmum** (first) vs **prīdiē** (day before) — keep separate.
+
+## Exercise menu
+
+1. **Conjugate fut-pf active** (one verb, all six forms): "Give fut-pf of *parāre*." → *parāverō, parāveris, parāverit, parāverimus, parāveritis, parāverint.* Single concept, easy.
+2. **PENSVM A single-blank ending**: "Cum cēnam parāv___, vōs vocābō." → *parāverō.* "Cum bene dormīv___, valēbis." → *dormīveris.*
+3. **PENSVM B vocab fill-in**: "Servus quī cibum coquit ___ appellātur." → *cocus.* "In ___ sunt trēs lectī." → *triclīniō.*
+4. **Deponent drill**: "Conjugate *fruī* present, all 6 persons." → *fruor, frueris, fruitur, fruimur, fruiminī, fruuntur.*
+5. **Case after deponent**: "Iūlius ___ (vīnum) fruitur." → *vīnō* (abl.).
+6. **Distributive**: "How many guests on each couch (two each)?" → *bīnī convīvae in singulīs lectīs.*
+7. **Spot the error**: *Cum prīmum cocus cēnam parāverim, cēnābimus.* → *parāverit* (3sg fut-pf, not 1sg perf-subj).
+8. **PENSVM C Q&A**: "Quid est balneum?" → *Balneum est locus ubi corpus lavātur.* "Ex quā māteriā pōcula facta sunt?" → *Pōcula ex argentō facta sunt.*
+9. **Translate a hortatory subj sentence**: "Let's drain our cups, friends!" → *Pōcula exhauriāmus, amīcī!*
+10. **Parse fut-pf pf-subj**: Identify mood/tense of *parāverit* in context. Student must say either fut-pf indic. (3sg) or pf subj. (3sg) — both possible, choose by context.
+
+## Session start
+
+Bare (`/llpsi-c30`): "Cap. XXX — Convivivm. The dinner-party chapter: lots of food/drink vocab plus the future perfect (active and passive). Where do you want to start — fut-pf, dinner vocab, deponents (*fruī, ūtī*), or distributives (*singulī, bīnī, ternī*)?"
+
+With topic: jump in.
+
+After ~6–8 items, offer continue/switch/move on.