initial: add all custom Claude.ai skills

README.md

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+# claude-skills
+
+Custom skills for Claude.ai (claude.ai → Settings → Skills).
+
+## Skills
+
+| Skill | Description |
+|-------|-------------|
+| **bulletproof** | 12-stage adaptive dev workflow (research → deploy). Adapted for Python/Docker/Traefik/MikroTik/embedded stacks, Gitea CI/CD, SonarQube. Based on Bulletproof v5.0 by Artemiy Miller. |
+| **embedded-firmware-engineer** | Bare-metal & RTOS firmware: ESP32/ESP-IDF, STM32 HAL/LL, Nordic nRF, FreeRTOS, Zephyr. NASA/JPL Power of Ten rules, banned functions, DMA/cache coherence, GPIO policy, watchdog strategy, brown-out testing. |
+| **my-python-senior** | Senior-level Python engineer for systems, containers, LLM workflows, networking, and file processing. |
+| **pcb-ai-engineer** | Code-driven schematic & PCB design using Circuit-Synth (Python) → KiCad → Altium. Universal STM-family abstraction with `family → package → pinmap → capabilities` data model. |
+
+## Structure
+
+```
+claude-skills/
+├── README.md
+├── bulletproof/
+│   ├── SKILL.md
+│   ├── agents/
+│   │   └── code-reviewer.md
+│   └── templates/
+│       ├── handoff.md
+│       ├── plan.md
+│       ├── research.md
+│       └── spec.md
+├── embedded-firmware-engineer/
+│   └── SKILL.md
+├── my-python-senior/
+│   ├── SKILL.md
+│   ├── ai-ml-llm.md
+│   ├── containers.md
+│   ├── files-io.md
+│   ├── networking.md
+│   └── systems.md
+└── pcb-ai-engineer/
+    ├── SKILL.md
+    ├── main.py
+    ├── mcu_core.py
+    ├── mcu_db.py
+    ├── mcu_peripherals.py
+    └── power.py
+```
+
+## Usage
+
+Each subdirectory is a standalone skill. Upload to Claude.ai via **Settings → Profile → Custom Skills**, or point Claude Code's `--skill` flag at the `SKILL.md` file.
+
+## License
+
+Private — for personal use only.