Add persian-tutor: Gradio-based GCSE Persian language learning app

Vocabulary study with FSRS spaced repetition, AI tutoring (Ollama/Claude),
essay marking, idioms browser, Anki export, and dashboard. 918 vocabulary
entries across 39 categories. 41 tests passing.

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

python/persian-tutor/README.md

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+# Persian Language Tutor
+
+A Gradio-based Persian (Farsi) language learning app for English speakers, built around GCSE Persian vocabulary (Pearson specification).
+
+## Features
+
+- **Vocabulary Study** — Search, browse, and study 918 GCSE Persian words across 39 categories
+- **Flashcards with FSRS** — Spaced repetition scheduling (same algorithm as Anki)
+- **Idioms & Expressions** — 25 Persian social conventions with cultural context
+- **AI Tutor** — Conversational Persian lessons by GCSE theme (via Ollama)
+- **Essay Marking** — Write Persian essays, get AI feedback and grading (via Claude)
+- **Dashboard** — Track progress, streaks, and mastery
+- **Anki Export** — Generate .apkg decks for offline study
+- **Voice Input** — Speak Persian via microphone (Whisper STT) in the Tutor tab
+
+## Prerequisites
+
+- `whisper-ollama` conda environment with Python 3.10+
+- Ollama running locally with `qwen2.5:7b` (or another model)
+- Claude CLI installed (for essay marking / smart mode)
+
+## Setup
+
+```bash
+/home/ys/miniforge3/envs/whisper-ollama/bin/pip install gradio genanki fsrs
+```
+
+## Running the app
+
+```bash
+cd /home/ys/family-repo/Code/python/persian-tutor
+/home/ys/miniforge3/envs/whisper-ollama/bin/python app.py
+```
+
+Then open http://localhost:7860 in your browser.
+
+## Running tests
+
+```bash
+cd /home/ys/family-repo/Code/python/persian-tutor
+/home/ys/miniforge3/envs/whisper-ollama/bin/python -m pytest tests/ -v
+```
+
+41 tests covering db, vocab, ai, and anki_export modules.
+
+## Expanding vocabulary
+
+The vocabulary can be expanded by editing `data/vocabulary.json` directly or by updating `scripts/build_vocab.py` and re-running it:
+
+```bash
+/home/ys/miniforge3/envs/whisper-ollama/bin/python scripts/build_vocab.py
+```
+
+## TODO
+
+- [ ] Voice-based vocabulary testing — answer flashcard prompts by speaking Persian
+- [ ] Improved UI theme and layout polish