chore: import local project into Gitea

README.md

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+# p4 Gemini chat (ESP-IDF)
+
+Parent tree for Gemini-enabled UI on Espressif’s **ESP32-P4-class** toolchain.
+
+Main firmware: **`p4_gemini_chat/`**
+
+| Path | Notes |
+|------|-------|
+| `p4_gemini_chat/` | CMake + `main/` sources, `sdkconfig`, `managed_components` |
+| `components/` | Shared component libraries |
+| `ai brains/` | Prompt / persona assets |
+| `build/` | Local IDF artifacts (keep untracked) |
+
+## Build flow
+
+Install **ESP-IDF** matching Espressif P4 toolchain requirements, activate environment, then:
+
+```bash
+cd p4_gemini_chat
+idf.py set-target esp32p4   # confirm precise target alias with Espressif release notes
+idf.py fullclean build flash monitor
+```
+
+Export `GEMINI_API_KEY` (or whichever env var main sources expect) securely—never bake keys into firmware images.