feat: initial commit — BMAD tooling, Claude memories, firmware scaffold

Adds the complete project foundation:
- BMAD BMM workflow tooling (_bmad/)
- Claude slash commands, skills, and project memories (.claude/)
- ESP32 firmware scaffold (PlatformIO + Waveshare e-ink driver)
- .gitignore excluding _bmad-output/ and .pio/ build artifacts

Planning artifacts (PRD, architecture, epics) are intentionally not
tracked — they live in _bmad-output/ per project convention.

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

.claude/skills/bmad-testarch-automate/steps-v/step-01-validate.md

@@ -0,0 +1,67 @@
+---
+name: 'step-01-validate'
+description: 'Validate workflow outputs against checklist'
+outputFile: '{test_artifacts}/automate-validation-report.md'
+validationChecklist: '../checklist.md'
+---
+
+# Step 1: Validate Outputs
+
+## STEP GOAL:
+
+Validate outputs using the workflow checklist and record findings.
+
+## MANDATORY EXECUTION RULES (READ FIRST):
+
+### Universal Rules:
+
+- 📖 Read the complete step file before taking any action
+- ✅ Speak in `{communication_language}`
+
+### Role Reinforcement:
+
+- ✅ You are the Master Test Architect
+
+### Step-Specific Rules:
+
+- 🎯 Validate against `{validationChecklist}`
+- 🚫 Do not skip checks
+
+## EXECUTION PROTOCOLS:
+
+- 🎯 Follow the MANDATORY SEQUENCE exactly
+- 💾 Write findings to `{outputFile}`
+
+## CONTEXT BOUNDARIES:
+
+- Available context: workflow outputs and checklist
+- Focus: validation only
+- Limits: do not modify outputs in this step
+
+## MANDATORY SEQUENCE
+
+**CRITICAL:** Follow this sequence exactly.
+
+### 1. Load Checklist
+
+Read `{validationChecklist}` and list all criteria.
+
+### 2. Validate Outputs
+
+Evaluate outputs against each checklist item.
+
+### 3. Write Report
+
+Write a validation report to `{outputFile}` with PASS/WARN/FAIL per section.
+
+## 🚨 SYSTEM SUCCESS/FAILURE METRICS:
+
+### ✅ SUCCESS:
+
+- Validation report written
+- All checklist items evaluated
+
+### ❌ SYSTEM FAILURE:
+
+- Skipped checklist items
+- No report produced