Add Polish and Korean exercise instructions

Incorporates the translation content from two external PRs onto current main
(their branches were based on a pre-media-restore history with no common
ancestor, so applied programmatically rather than merged):

- Polish (pl) from #25 (Dawid Matyjasik) — as submitted.
- Korean (ko) from #27 (SeungTaek Lim) — normalized to the dataset convention:
  only nested instructions.ko / instruction_steps.ko were kept. The PR's extra
  flat top-level *_ko metadata fields (name_ko, target_ko, etc.) were dropped
  because they are inconsistent with every other language and would violate
  data/exercises.schema.json (additionalProperties: false).

Updates data/exercises.json (all 1,324 records), the embedded EXERCISES blob
and SQL export in index.html, the SQL schemas / INSERT builder / LLM prompt in
setup.html, and README language references (7 -> 9 languages). Change is purely
additive: stripping pl+ko reproduces the previous data byte-for-byte.

Co-Authored-By: Dawid Matyjasik <63721806+dawidmatyjasik@users.noreply.github.com>
Co-Authored-By: SeungTaek Lim <61047602+namest504@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -11,12 +11,12 @@
   <img src="videos/0334-DsgkuIt.gif" width="120" alt="dumbbell lateral raise" />
 </p>
 
-**A comprehensive, ready-to-use fitness exercise dataset with 1,324 exercises — each with an animation GIF, 180×180 thumbnail image, category, body-part, equipment, target and muscle-group data, and step-by-step instructions in 7 languages (English, Spanish, Italian, Turkish, Russian, Chinese, Hindi).**
+**A comprehensive, ready-to-use fitness exercise dataset with 1,324 exercises — each with an animation GIF, 180×180 thumbnail image, category, body-part, equipment, target and muscle-group data, and step-by-step instructions in 9 languages (English, Spanish, Italian, Turkish, Russian, Chinese, Hindi, Polish, Korean).**
 
 [![Exercises](https://img.shields.io/badge/Exercises-1324-blue?style=flat-square)](data/exercises.json)
 [![Animation GIFs](https://img.shields.io/badge/Animation%20GIFs-1324-brightgreen?style=flat-square)](videos/)
 [![Thumbnails](https://img.shields.io/badge/Thumbnails-1324-orange?style=flat-square)](images/)
-[![Languages](https://img.shields.io/badge/Languages-7-green?style=flat-square)](#-overview)
+[![Languages](https://img.shields.io/badge/Languages-9-green?style=flat-square)](#-overview)
 [![Mobile App](https://img.shields.io/badge/App-LogPress-111111?style=flat-square&logo=react)](https://github.com/hasaneyldrm/logpress-public)
 [![License](https://img.shields.io/badge/License-MIT%20%2B%20media%20terms-blue?style=flat-square)](LICENSE)
 
@@ -32,7 +32,7 @@
 
 - 1,324 exercises with category, body-part, equipment, target and muscle-group data
 - an animation GIF + 180×180 thumbnail for every exercise (media © [Gym visual](https://gymvisual.com/) — see [License](#-license--use))
-- step-by-step instructions in 7 languages (🇬🇧 English, 🇪🇸 Spanish, 🇮🇹 Italian, 🇹🇷 Turkish, 🇷🇺 Russian, 🇨🇳 Chinese, 🇮🇳 Hindi)
+- step-by-step instructions in 9 languages (🇬🇧 English, 🇪🇸 Spanish, 🇮🇹 Italian, 🇹🇷 Turkish, 🇷🇺 Russian, 🇨🇳 Chinese, 🇮🇳 Hindi, 🇵🇱 Polish, 🇰🇷 Korean)
 - the interactive browser (`index.html`) and developer setup guide (`setup.html`)
 
 ---
@@ -71,7 +71,7 @@ Each exercise entry contains:
 | Muscle Group | Supporting / synergist muscles |
 | Equipment | Equipment required (or `body weight` for bodyweight) |
 | Instructions | Step-by-step instructions for each exercise |
-| Available Languages | 🇬🇧 English · 🇪🇸 Spanish · 🇮🇹 Italian · 🇹🇷 Turkish · 🇷🇺 Russian · 🇨🇳 Chinese · 🇮🇳 Hindi |
+| Available Languages | 🇬🇧 English · 🇪🇸 Spanish · 🇮🇹 Italian · 🇹🇷 Turkish · 🇷🇺 Russian · 🇨🇳 Chinese · 🇮🇳 Hindi · 🇵🇱 Polish · 🇰🇷 Korean |
 | Media | 180×180 thumbnail (`image`) + animation GIF (`gif_url`) per exercise — media © Gym visual, see [License](#-license--use) |
 
 ---
@@ -88,7 +88,7 @@ A fully client-side exercise explorer with:
 - Live search across all 1,324 exercises
 - Filter by category, equipment, and target muscle
 - Infinite scroll grid
-- Click any card to see full details and instructions in English, Spanish, Italian, Turkish, Russian, Chinese, or Hindi
+- Click any card to see full details and instructions in English, Spanish, Italian, Turkish, Russian, Chinese, Hindi, Polish, or Korean
 
 ### `setup.html` — Developer Setup Guide
 
@@ -131,7 +131,7 @@ exercises-dataset/
 | Metric | Count |
 |---|---|
 | Total Exercises | **1,324** |
-| Instruction Languages | **7** |
+| Instruction Languages | **9** |
 
 ### Exercises by Body Part
 
@@ -187,7 +187,9 @@ Each record in `data/exercises.json` follows this structure. A machine-readable
 | `instructions.ru` | `string` | Full step-by-step instructions in Russian |
 | `instructions.zh` | `string` | Full step-by-step instructions in Chinese |
 | `instructions.hi` | `string` | Full step-by-step instructions in Hindi |
-| `instruction_steps.<lang>` | `array[string]` | Same instructions split into an ordered array of steps, per language (`en`, `es`, `it`, `tr`, `ru`, `zh`, `hi`) |
+| `instructions.pl` | `string` | Full step-by-step instructions in Polish |
+| `instructions.ko` | `string` | Full step-by-step instructions in Korean |
+| `instruction_steps.<lang>` | `array[string]` | Same instructions split into an ordered array of steps, per language (`en`, `es`, `it`, `tr`, `ru`, `zh`, `hi`, `pl`, `ko`) |
 | `muscle_group` | `string` | Primary synergist muscle group |
 | `secondary_muscles` | `array[string]` | Additional muscles involved |
 | `target` | `string` | Primary target muscle (e.g. `"biceps"`, `"pectoralis major"`) |
@@ -213,7 +215,9 @@ Each record in `data/exercises.json` follows this structure. A machine-readable
     "tr": "Sırt üstü yatın, dizlerinizi bükün ve ayaklarınızı yere düz koyun. ...",
     "ru": "Лягте на спину, согните колени и поставьте ступни на землю. ...",
     "zh": "平躺，膝盖弯曲，双脚平放在地上。...",
-    "hi": "अपने घुटनों को मोड़कर और पैरों को ज़मीन पर सपाट रखते हुए अपनी पीठ के बल लेट जाएँ।..."
+    "hi": "अपने घुटनों को मोड़कर और पैरों को ज़मीन पर सपाट रखते हुए अपनी पीठ के बल लेट जाएँ।...",
+    "pl": "Połóż się płasko na plecach, ugnij kolana i oprzyj stopy płasko na pod ...",
+    "ko": "등을 바닥에 누워 무릎을 구부리고 발을 바닥에 붙입니다. ..."
   },
   "muscle_group": "hip flexors",
   "secondary_muscles": ["hip flexors", "lower back"],
@@ -378,6 +382,8 @@ console.log(ex.instructions.tr); // Turkish
 console.log(ex.instructions.ru); // Russian
 console.log(ex.instructions.zh); // Chinese
 console.log(ex.instructions.hi); // Hindi
+console.log(ex.instructions.pl); // Polish
+console.log(ex.instructions.ko); // Korean
 ```
 
 ### TypeScript — Type-safe Usage
@@ -397,6 +403,8 @@ interface Exercise {
     ru: string;
     zh: string;
     hi: string;
+    pl: string;
+    ko: string;
   };
   muscle_group: string;
   secondary_muscles: string[];